MagickCore 6.9.13-49
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/license/ %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44␌
45/*
46 Include declarations.
47*/
48#include "magick/studio.h"
49#include "magick/annotate.h"
50#include "magick/artifact.h"
51#include "magick/blob.h"
52#include "magick/cache.h"
53#include "magick/cache-private.h"
54#include "magick/cache-view.h"
55#include "magick/channel.h"
56#include "magick/color.h"
57#include "magick/color-private.h"
58#include "magick/colorspace.h"
59#include "magick/colorspace-private.h"
60#include "magick/composite.h"
61#include "magick/composite-private.h"
62#include "magick/constitute.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/enhance.h"
66#include "magick/exception.h"
67#include "magick/exception-private.h"
68#include "magick/gem.h"
69#include "magick/geometry.h"
70#include "magick/image-private.h"
71#include "magick/list.h"
72#include "magick/log.h"
73#include "magick/magick.h"
74#include "magick/memory-private.h"
75#include "magick/monitor.h"
76#include "magick/monitor-private.h"
77#include "magick/option.h"
78#include "magick/paint.h"
79#include "magick/pixel-accessor.h"
80#include "magick/pixel-private.h"
81#include "magick/property.h"
82#include "magick/resample.h"
83#include "magick/resample-private.h"
84#include "magick/resource_.h"
85#include "magick/splay-tree.h"
86#include "magick/string_.h"
87#include "magick/string-private.h"
88#include "magick/thread-private.h"
89#include "magick/token.h"
90#include "magick/transform.h"
91#include "magick/utility.h"
92␌
93/*
94 Define declarations.
95*/
96#define AntialiasThreshold (1.0/3.0)
97#define BezierQuantum 200
98#define PrimitiveExtentPad 4296.0
99#define MaxBezierCoordinates 67108864
100#define ThrowPointExpectedException(image,token) \
101{ \
102 (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104 status=MagickFalse; \
105 break; \
106}
107␌
108/*
109 Typedef declarations.
110*/
111typedef struct _EdgeInfo
112{
113 SegmentInfo
114 bounds;
115
116 double
117 scanline;
118
119 PointInfo
120 *points;
121
122 size_t
123 number_points;
124
125 ssize_t
126 direction;
127
128 MagickBooleanType
129 ghostline;
130
131 size_t
132 highwater;
133} EdgeInfo;
134
135typedef struct _ElementInfo
136{
137 double
138 cx,
139 cy,
140 major,
141 minor,
142 angle;
143} ElementInfo;
144
145typedef struct _MVGInfo
146{
147 PrimitiveInfo
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
156 PointInfo
157 point;
158
159 ExceptionInfo
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
165 EdgeInfo
166 *edges;
167
168 size_t
169 number_edges;
170} PolygonInfo;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
183 PointInfo
184 point;
185
186 PathInfoCode
187 code;
188} PathInfo;
189␌
190/*
191 Forward declarations.
192*/
193static Image
194 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195 ExceptionInfo *);
196
197static MagickBooleanType
198 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199 RenderMVGContent(Image *,const DrawInfo *,const size_t),
200 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202 const double,const MagickBooleanType,const MagickBooleanType),
203 TraceBezier(MVGInfo *,const size_t),
204 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210
211static PrimitiveInfo
212 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213
214static ssize_t
215 TracePath(Image *,MVGInfo *,const char *);
216␌
217/*
218%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219% %
220% %
221% %
222% A c q u i r e D r a w I n f o %
223% %
224% %
225% %
226%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227%
228% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229%
230% The format of the AcquireDrawInfo method is:
231%
232% DrawInfo *AcquireDrawInfo(void)
233%
234*/
235MagickExport DrawInfo *AcquireDrawInfo(void)
236{
237 DrawInfo
238 *draw_info;
239
240 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241 GetDrawInfo((ImageInfo *) NULL,draw_info);
242 return(draw_info);
243}
244␌
245/*
246%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247% %
248% %
249% %
250% C l o n e D r a w I n f o %
251% %
252% %
253% %
254%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255%
256% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257% is specified, a new DrawInfo structure is created initialized to default
258% values.
259%
260% The format of the CloneDrawInfo method is:
261%
262% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263% const DrawInfo *draw_info)
264%
265% A description of each parameter follows:
266%
267% o image_info: the image info.
268%
269% o draw_info: the draw info.
270%
271*/
272MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273 const DrawInfo *draw_info)
274{
275 DrawInfo
276 *clone_info;
277
278 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279 GetDrawInfo(image_info,clone_info);
280 if (draw_info == (DrawInfo *) NULL)
281 return(clone_info);
282 if (draw_info->id != (char *) NULL)
283 (void) CloneString(&clone_info->id,draw_info->id);
284 if (draw_info->primitive != (char *) NULL)
285 (void) CloneString(&clone_info->primitive,draw_info->primitive);
286 if (draw_info->geometry != (char *) NULL)
287 (void) CloneString(&clone_info->geometry,draw_info->geometry);
288 clone_info->compliance=draw_info->compliance;
289 clone_info->viewbox=draw_info->viewbox;
290 clone_info->affine=draw_info->affine;
291 clone_info->gravity=draw_info->gravity;
292 clone_info->fill=draw_info->fill;
293 clone_info->stroke=draw_info->stroke;
294 clone_info->stroke_width=draw_info->stroke_width;
295 if (draw_info->fill_pattern != (Image *) NULL)
296 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297 &draw_info->fill_pattern->exception);
298 else
299 if (draw_info->tile != (Image *) NULL)
300 clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301 &draw_info->tile->exception);
302 clone_info->tile=NewImageList(); /* tile is deprecated */
303 if (draw_info->stroke_pattern != (Image *) NULL)
304 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305 MagickTrue,&draw_info->stroke_pattern->exception);
306 clone_info->stroke_antialias=draw_info->stroke_antialias;
307 clone_info->text_antialias=draw_info->text_antialias;
308 clone_info->fill_rule=draw_info->fill_rule;
309 clone_info->linecap=draw_info->linecap;
310 clone_info->linejoin=draw_info->linejoin;
311 clone_info->miterlimit=draw_info->miterlimit;
312 clone_info->dash_offset=draw_info->dash_offset;
313 clone_info->decorate=draw_info->decorate;
314 clone_info->compose=draw_info->compose;
315 if (draw_info->text != (char *) NULL)
316 (void) CloneString(&clone_info->text,draw_info->text);
317 if (draw_info->font != (char *) NULL)
318 (void) CloneString(&clone_info->font,draw_info->font);
319 if (draw_info->metrics != (char *) NULL)
320 (void) CloneString(&clone_info->metrics,draw_info->metrics);
321 if (draw_info->family != (char *) NULL)
322 (void) CloneString(&clone_info->family,draw_info->family);
323 clone_info->style=draw_info->style;
324 clone_info->stretch=draw_info->stretch;
325 clone_info->weight=draw_info->weight;
326 if (draw_info->encoding != (char *) NULL)
327 (void) CloneString(&clone_info->encoding,draw_info->encoding);
328 clone_info->pointsize=draw_info->pointsize;
329 clone_info->kerning=draw_info->kerning;
330 clone_info->interline_spacing=draw_info->interline_spacing;
331 clone_info->interword_spacing=draw_info->interword_spacing;
332 clone_info->direction=draw_info->direction;
333 if (draw_info->density != (char *) NULL)
334 (void) CloneString(&clone_info->density,draw_info->density);
335 clone_info->align=draw_info->align;
336 clone_info->undercolor=draw_info->undercolor;
337 clone_info->border_color=draw_info->border_color;
338 if (draw_info->server_name != (char *) NULL)
339 (void) CloneString(&clone_info->server_name,draw_info->server_name);
340 if (draw_info->dash_pattern != (double *) NULL)
341 {
342 ssize_t
343 x;
344
345 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347 sizeof(*clone_info->dash_pattern));
348 if (clone_info->dash_pattern == (double *) NULL)
349 ThrowFatalException(ResourceLimitFatalError,
350 "UnableToAllocateDashPattern");
351 (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352 sizeof(*clone_info->dash_pattern));
353 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354 (x+1)*sizeof(*clone_info->dash_pattern));
355 }
356 clone_info->gradient=draw_info->gradient;
357 if (draw_info->gradient.stops != (StopInfo *) NULL)
358 {
359 size_t
360 number_stops;
361
362 number_stops=clone_info->gradient.number_stops;
363 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364 number_stops,sizeof(*clone_info->gradient.stops));
365 if (clone_info->gradient.stops == (StopInfo *) NULL)
366 ThrowFatalException(ResourceLimitFatalError,
367 "UnableToAllocateDashPattern");
368 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370 }
371 clone_info->bounds=draw_info->bounds;
372 clone_info->fill_opacity=draw_info->fill_opacity;
373 clone_info->stroke_opacity=draw_info->stroke_opacity;
374 clone_info->element_reference=draw_info->element_reference;
375 clone_info->clip_path=draw_info->clip_path;
376 clone_info->clip_units=draw_info->clip_units;
377 if (draw_info->clip_mask != (char *) NULL)
378 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379 if (draw_info->clipping_mask != (Image *) NULL)
380 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381 MagickTrue,&draw_info->clipping_mask->exception);
382 if (draw_info->composite_mask != (Image *) NULL)
383 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384 MagickTrue,&draw_info->composite_mask->exception);
385 clone_info->render=draw_info->render;
386 clone_info->debug=draw_info->debug;
387 return(clone_info);
388}
389␌
390/*
391%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392% %
393% %
394% %
395+ C o n v e r t P a t h T o P o l y g o n %
396% %
397% %
398% %
399%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400%
401% ConvertPathToPolygon() converts a path to the more efficient sorted
402% rendering form.
403%
404% The format of the ConvertPathToPolygon method is:
405%
406% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407% ExceptionInfo *exception)
408%
409% A description of each parameter follows:
410%
411% o ConvertPathToPolygon() returns the path in a more efficient sorted
412% rendering form of type PolygonInfo.
413%
414% o draw_info: Specifies a pointer to an DrawInfo structure.
415%
416% o path_info: Specifies a pointer to an PathInfo structure.
417%
418% o exception: return any errors or warnings in this structure.
419%
420*/
421
422static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423{
424 ssize_t
425 i;
426
427 if (polygon_info->edges != (EdgeInfo *) NULL)
428 {
429 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430 if (polygon_info->edges[i].points != (PointInfo *) NULL)
431 polygon_info->edges[i].points=(PointInfo *)
432 RelinquishMagickMemory(polygon_info->edges[i].points);
433 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434 polygon_info->edges);
435 }
436 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437}
438
439#if defined(__cplusplus) || defined(c_plusplus)
440extern "C" {
441#endif
442
443static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444{
445#define DrawCompareEdge(p,q) \
446{ \
447 if (((p)-(q)) < 0.0) \
448 return(-1); \
449 if (((p)-(q)) > 0.0) \
450 return(1); \
451}
452
453 const PointInfo
454 *p,
455 *q;
456
457 /*
458 Edge sorting for right-handed coordinate system.
459 */
460 p=((const EdgeInfo *) p_edge)->points;
461 q=((const EdgeInfo *) q_edge)->points;
462 DrawCompareEdge(p[0].y,q[0].y);
463 DrawCompareEdge(p[0].x,q[0].x);
464 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465 (q[1].x-q[0].x));
466 DrawCompareEdge(p[1].y,q[1].y);
467 DrawCompareEdge(p[1].x,q[1].x);
468 return(0);
469}
470
471#if defined(__cplusplus) || defined(c_plusplus)
472}
473#endif
474
475static void LogPolygonInfo(const PolygonInfo *polygon_info)
476{
477 EdgeInfo
478 *p;
479
480 ssize_t
481 i,
482 j;
483
484 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485 p=polygon_info->edges;
486 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487 {
488 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489 (double) i);
490 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491 p->direction != MagickFalse ? "down" : "up");
492 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493 p->ghostline != MagickFalse ? "transparent" : "opaque");
494 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496 p->bounds.x2,p->bounds.y2);
497 for (j=0; j < (ssize_t) p->number_points; j++)
498 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499 p->points[j].x,p->points[j].y);
500 p++;
501 }
502 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503}
504
505static void ReversePoints(PointInfo *points,const size_t number_points)
506{
507 PointInfo
508 point;
509
510 ssize_t
511 i;
512
513 for (i=0; i < (ssize_t) (number_points >> 1); i++)
514 {
515 point=points[i];
516 points[i]=points[number_points-(i+1)];
517 points[number_points-(i+1)]=point;
518 }
519}
520
521static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522 ExceptionInfo *exception)
523{
524 long
525 direction,
526 next_direction;
527
528 PointInfo
529 point,
530 *points;
531
532 PolygonInfo
533 *polygon_info;
534
535 SegmentInfo
536 bounds;
537
538 ssize_t
539 i,
540 n;
541
542 MagickBooleanType
543 ghostline;
544
545 size_t
546 edge,
547 number_edges,
548 number_points;
549
550 /*
551 Convert a path to the more efficient sorted rendering form.
552 */
553 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554 if (polygon_info == (PolygonInfo *) NULL)
555 {
556 (void) ThrowMagickException(exception,GetMagickModule(),
557 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558 return((PolygonInfo *) NULL);
559 }
560 number_edges=16;
561 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562 sizeof(*polygon_info->edges));
563 if (polygon_info->edges == (EdgeInfo *) NULL)
564 {
565 (void) ThrowMagickException(exception,GetMagickModule(),
566 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567 return(DestroyPolygonInfo(polygon_info));
568 }
569 (void) memset(polygon_info->edges,0,number_edges*
570 sizeof(*polygon_info->edges));
571 direction=0;
572 edge=0;
573 ghostline=MagickFalse;
574 n=0;
575 number_points=0;
576 points=(PointInfo *) NULL;
577 (void) memset(&point,0,sizeof(point));
578 (void) memset(&bounds,0,sizeof(bounds));
579 polygon_info->edges[edge].number_points=(size_t) n;
580 polygon_info->edges[edge].scanline=0.0;
581 polygon_info->edges[edge].highwater=0;
582 polygon_info->edges[edge].ghostline=ghostline;
583 polygon_info->edges[edge].direction=(ssize_t) direction;
584 polygon_info->edges[edge].points=points;
585 polygon_info->edges[edge].bounds=bounds;
586 polygon_info->number_edges=0;
587 for (i=0; path_info[i].code != EndCode; i++)
588 {
589 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590 (path_info[i].code == GhostlineCode))
591 {
592 /*
593 Move to.
594 */
595 if ((points != (PointInfo *) NULL) && (n >= 2))
596 {
597 if (edge == number_edges)
598 {
599 number_edges<<=1;
600 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601 polygon_info->edges,(size_t) number_edges,
602 sizeof(*polygon_info->edges));
603 if (polygon_info->edges == (EdgeInfo *) NULL)
604 {
605 (void) ThrowMagickException(exception,GetMagickModule(),
606 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607 points=(PointInfo *) RelinquishMagickMemory(points);
608 return(DestroyPolygonInfo(polygon_info));
609 }
610 }
611 polygon_info->edges[edge].number_points=(size_t) n;
612 polygon_info->edges[edge].scanline=(-1.0);
613 polygon_info->edges[edge].highwater=0;
614 polygon_info->edges[edge].ghostline=ghostline;
615 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616 if (direction < 0)
617 ReversePoints(points,(size_t) n);
618 polygon_info->edges[edge].points=points;
619 polygon_info->edges[edge].bounds=bounds;
620 polygon_info->edges[edge].bounds.y1=points[0].y;
621 polygon_info->edges[edge].bounds.y2=points[n-1].y;
622 points=(PointInfo *) NULL;
623 ghostline=MagickFalse;
624 edge++;
625 polygon_info->number_edges=edge;
626 }
627 if (points == (PointInfo *) NULL)
628 {
629 number_points=16;
630 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631 sizeof(*points));
632 if (points == (PointInfo *) NULL)
633 {
634 (void) ThrowMagickException(exception,GetMagickModule(),
635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636 return(DestroyPolygonInfo(polygon_info));
637 }
638 }
639 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640 point=path_info[i].point;
641 points[0]=point;
642 bounds.x1=point.x;
643 bounds.x2=point.x;
644 direction=0;
645 n=1;
646 continue;
647 }
648 /*
649 Line to.
650 */
651 next_direction=((path_info[i].point.y > point.y) ||
652 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653 (path_info[i].point.x > point.x))) ? 1 : -1;
654 if ((points != (PointInfo *) NULL) && (direction != 0) &&
655 (direction != next_direction))
656 {
657 /*
658 New edge.
659 */
660 point=points[n-1];
661 if (edge == number_edges)
662 {
663 number_edges<<=1;
664 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665 polygon_info->edges,(size_t) number_edges,
666 sizeof(*polygon_info->edges));
667 if (polygon_info->edges == (EdgeInfo *) NULL)
668 {
669 (void) ThrowMagickException(exception,GetMagickModule(),
670 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671 points=(PointInfo *) RelinquishMagickMemory(points);
672 return(DestroyPolygonInfo(polygon_info));
673 }
674 }
675 polygon_info->edges[edge].number_points=(size_t) n;
676 polygon_info->edges[edge].scanline=(-1.0);
677 polygon_info->edges[edge].highwater=0;
678 polygon_info->edges[edge].ghostline=ghostline;
679 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680 if (direction < 0)
681 ReversePoints(points,(size_t) n);
682 polygon_info->edges[edge].points=points;
683 polygon_info->edges[edge].bounds=bounds;
684 polygon_info->edges[edge].bounds.y1=points[0].y;
685 polygon_info->edges[edge].bounds.y2=points[n-1].y;
686 polygon_info->number_edges=edge+1;
687 points=(PointInfo *) NULL;
688 number_points=16;
689 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690 sizeof(*points));
691 if (points == (PointInfo *) NULL)
692 {
693 (void) ThrowMagickException(exception,GetMagickModule(),
694 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695 return(DestroyPolygonInfo(polygon_info));
696 }
697 n=1;
698 ghostline=MagickFalse;
699 points[0]=point;
700 bounds.x1=point.x;
701 bounds.x2=point.x;
702 edge++;
703 }
704 direction=next_direction;
705 if (points == (PointInfo *) NULL)
706 continue;
707 if (n == (ssize_t) number_points)
708 {
709 number_points<<=1;
710 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711 sizeof(*points));
712 if (points == (PointInfo *) NULL)
713 {
714 (void) ThrowMagickException(exception,GetMagickModule(),
715 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716 return(DestroyPolygonInfo(polygon_info));
717 }
718 }
719 point=path_info[i].point;
720 points[n]=point;
721 if (point.x < bounds.x1)
722 bounds.x1=point.x;
723 if (point.x > bounds.x2)
724 bounds.x2=point.x;
725 n++;
726 }
727 if (points != (PointInfo *) NULL)
728 {
729 if (n < 2)
730 points=(PointInfo *) RelinquishMagickMemory(points);
731 else
732 {
733 if (edge == number_edges)
734 {
735 number_edges<<=1;
736 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737 polygon_info->edges,(size_t) number_edges,
738 sizeof(*polygon_info->edges));
739 if (polygon_info->edges == (EdgeInfo *) NULL)
740 {
741 (void) ThrowMagickException(exception,GetMagickModule(),
742 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743 return(DestroyPolygonInfo(polygon_info));
744 }
745 }
746 polygon_info->edges[edge].number_points=(size_t) n;
747 polygon_info->edges[edge].scanline=(-1.0);
748 polygon_info->edges[edge].highwater=0;
749 polygon_info->edges[edge].ghostline=ghostline;
750 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751 if (direction < 0)
752 ReversePoints(points,(size_t) n);
753 polygon_info->edges[edge].points=points;
754 polygon_info->edges[edge].bounds=bounds;
755 polygon_info->edges[edge].bounds.y1=points[0].y;
756 polygon_info->edges[edge].bounds.y2=points[n-1].y;
757 points=(PointInfo *) NULL;
758 ghostline=MagickFalse;
759 edge++;
760 polygon_info->number_edges=edge;
761 }
762 }
763 polygon_info->number_edges=edge;
764 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
765 polygon_info->number_edges,sizeof(*polygon_info->edges));
766 if (polygon_info->edges == (EdgeInfo *) NULL)
767 {
768 (void) ThrowMagickException(exception,GetMagickModule(),
769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
770 return(DestroyPolygonInfo(polygon_info));
771 }
772 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
773 {
774 EdgeInfo
775 *edge_info;
776
777 edge_info=polygon_info->edges+i;
778 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
779 edge_info->number_points,sizeof(*edge_info->points));
780 if (edge_info->points == (PointInfo *) NULL)
781 {
782 (void) ThrowMagickException(exception,GetMagickModule(),
783 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
784 return(DestroyPolygonInfo(polygon_info));
785 }
786 }
787 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
788 sizeof(*polygon_info->edges),DrawCompareEdges);
789 if ((GetLogEventMask() & DrawEvent) != 0)
790 LogPolygonInfo(polygon_info);
791 return(polygon_info);
792}
793␌
794/*
795%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
796% %
797% %
798% %
799+ C o n v e r t P r i m i t i v e T o P a t h %
800% %
801% %
802% %
803%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
804%
805% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
806% path structure.
807%
808% The format of the ConvertPrimitiveToPath method is:
809%
810% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
811% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
812%
813% A description of each parameter follows:
814%
815% o ConvertPrimitiveToPath() returns a vector path structure of type
816% PathInfo.
817%
818% o draw_info: a structure of type DrawInfo.
819%
820% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
821%
822%
823*/
824
825static void LogPathInfo(const PathInfo *path_info)
826{
827 const PathInfo
828 *p;
829
830 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
831 for (p=path_info; p->code != EndCode; p++)
832 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
833 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
834 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
835 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
836 "?");
837 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
838}
839
840static PathInfo *ConvertPrimitiveToPath(
841 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
842 ExceptionInfo *exception)
843{
844 MagickBooleanType
845 closed_subpath;
846
847 PathInfo
848 *path_info;
849
850 PathInfoCode
851 code;
852
853 PointInfo
854 p,
855 q;
856
857 ssize_t
858 i,
859 n;
860
861 ssize_t
862 coordinates,
863 start;
864
865 magick_unreferenced(draw_info);
866
867 /*
868 Converts a PrimitiveInfo structure into a vector path structure.
869 */
870 switch (primitive_info->primitive)
871 {
872 case PointPrimitive:
873 case ColorPrimitive:
874 case MattePrimitive:
875 case TextPrimitive:
876 case ImagePrimitive:
877 return((PathInfo *) NULL);
878 default:
879 break;
880 }
881 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
882 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
883 sizeof(*path_info));
884 if (path_info == (PathInfo *) NULL)
885 {
886 (void) ThrowMagickException(exception,GetMagickModule(),
887 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
888 return((PathInfo *) NULL);
889 }
890 coordinates=0;
891 closed_subpath=MagickFalse;
892 n=0;
893 p.x=(-1.0);
894 p.y=(-1.0);
895 q.x=(-1.0);
896 q.y=(-1.0);
897 start=0;
898 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
899 {
900 code=LineToCode;
901 if (coordinates <= 0)
902 {
903 /*
904 New subpath.
905 */
906 coordinates=(ssize_t) primitive_info[i].coordinates;
907 p=primitive_info[i].point;
908 start=n;
909 code=MoveToCode;
910 closed_subpath=primitive_info[i].closed_subpath;
911 }
912 coordinates--;
913 if ((code == MoveToCode) || (coordinates <= 0) ||
914 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
915 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
916 {
917 /*
918 Eliminate duplicate points.
919 */
920 path_info[n].code=code;
921 path_info[n].point=primitive_info[i].point;
922 q=primitive_info[i].point;
923 n++;
924 }
925 if (coordinates > 0)
926 continue; /* next point in current subpath */
927 if (closed_subpath != MagickFalse)
928 {
929 closed_subpath=MagickFalse;
930 continue;
931 }
932 /*
933 Mark the p point as open if the subpath is not closed.
934 */
935 path_info[start].code=OpenCode;
936 path_info[n].code=GhostlineCode;
937 path_info[n].point=primitive_info[i].point;
938 n++;
939 path_info[n].code=LineToCode;
940 path_info[n].point=p;
941 n++;
942 }
943 path_info[n].code=EndCode;
944 path_info[n].point.x=0.0;
945 path_info[n].point.y=0.0;
946 if (IsEventLogging() != MagickFalse)
947 LogPathInfo(path_info);
948 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
949 sizeof(*path_info));
950 return(path_info);
951}
952␌
953/*
954%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
955% %
956% %
957% %
958% D e s t r o y D r a w I n f o %
959% %
960% %
961% %
962%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
963%
964% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
965%
966% The format of the DestroyDrawInfo method is:
967%
968% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969%
970% A description of each parameter follows:
971%
972% o draw_info: the draw info.
973%
974*/
975MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
976{
977 assert(draw_info != (DrawInfo *) NULL);
978 assert(draw_info->signature == MagickCoreSignature);
979 if (IsEventLogging() != MagickFalse)
980 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
981 if (draw_info->id != (char *) NULL)
982 draw_info->id=DestroyString(draw_info->id);
983 if (draw_info->primitive != (char *) NULL)
984 draw_info->primitive=DestroyString(draw_info->primitive);
985 if (draw_info->text != (char *) NULL)
986 draw_info->text=DestroyString(draw_info->text);
987 if (draw_info->geometry != (char *) NULL)
988 draw_info->geometry=DestroyString(draw_info->geometry);
989 if (draw_info->tile != (Image *) NULL)
990 draw_info->tile=DestroyImage(draw_info->tile);
991 if (draw_info->fill_pattern != (Image *) NULL)
992 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
993 if (draw_info->stroke_pattern != (Image *) NULL)
994 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
995 if (draw_info->font != (char *) NULL)
996 draw_info->font=DestroyString(draw_info->font);
997 if (draw_info->metrics != (char *) NULL)
998 draw_info->metrics=DestroyString(draw_info->metrics);
999 if (draw_info->family != (char *) NULL)
1000 draw_info->family=DestroyString(draw_info->family);
1001 if (draw_info->encoding != (char *) NULL)
1002 draw_info->encoding=DestroyString(draw_info->encoding);
1003 if (draw_info->density != (char *) NULL)
1004 draw_info->density=DestroyString(draw_info->density);
1005 if (draw_info->server_name != (char *) NULL)
1006 draw_info->server_name=(char *)
1007 RelinquishMagickMemory(draw_info->server_name);
1008 if (draw_info->dash_pattern != (double *) NULL)
1009 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1010 draw_info->dash_pattern);
1011 if (draw_info->gradient.stops != (StopInfo *) NULL)
1012 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1013 draw_info->gradient.stops);
1014 if (draw_info->clip_mask != (char *) NULL)
1015 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1016 if (draw_info->clipping_mask != (Image *) NULL)
1017 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1018 if (draw_info->composite_mask != (Image *) NULL)
1019 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1020 if (draw_info->image_info != (ImageInfo *) NULL)
1021 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1022 draw_info->signature=(~MagickCoreSignature);
1023 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1024 return(draw_info);
1025}
1026␌
1027/*
1028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1029% %
1030% %
1031% %
1032% D r a w A f f i n e I m a g e %
1033% %
1034% %
1035% %
1036%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037%
1038% DrawAffineImage() composites the source over the destination image as
1039% dictated by the affine transform.
1040%
1041% The format of the DrawAffineImage method is:
1042%
1043% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1044% const AffineMatrix *affine)
1045%
1046% A description of each parameter follows:
1047%
1048% o image: the image.
1049%
1050% o source: the source image.
1051%
1052% o affine: the affine transform.
1053%
1054*/
1055
1056static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1057 const double y,const SegmentInfo *edge)
1058{
1059 double
1060 intercept,
1061 z;
1062
1063 double
1064 x;
1065
1066 SegmentInfo
1067 inverse_edge;
1068
1069 /*
1070 Determine left and right edges.
1071 */
1072 inverse_edge.x1=edge->x1;
1073 inverse_edge.y1=edge->y1;
1074 inverse_edge.x2=edge->x2;
1075 inverse_edge.y2=edge->y2;
1076 z=affine->ry*y+affine->tx;
1077 if (affine->sx >= MagickEpsilon)
1078 {
1079 intercept=(-z/affine->sx);
1080 x=intercept;
1081 if (x > inverse_edge.x1)
1082 inverse_edge.x1=x;
1083 intercept=(-z+(double) image->columns)/affine->sx;
1084 x=intercept;
1085 if (x < inverse_edge.x2)
1086 inverse_edge.x2=x;
1087 }
1088 else
1089 if (affine->sx < -MagickEpsilon)
1090 {
1091 intercept=(-z+(double) image->columns)/affine->sx;
1092 x=intercept;
1093 if (x > inverse_edge.x1)
1094 inverse_edge.x1=x;
1095 intercept=(-z/affine->sx);
1096 x=intercept;
1097 if (x < inverse_edge.x2)
1098 inverse_edge.x2=x;
1099 }
1100 else
1101 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1102 {
1103 inverse_edge.x2=edge->x1;
1104 return(inverse_edge);
1105 }
1106 /*
1107 Determine top and bottom edges.
1108 */
1109 z=affine->sy*y+affine->ty;
1110 if (affine->rx >= MagickEpsilon)
1111 {
1112 intercept=(-z/affine->rx);
1113 x=intercept;
1114 if (x > inverse_edge.x1)
1115 inverse_edge.x1=x;
1116 intercept=(-z+(double) image->rows)/affine->rx;
1117 x=intercept;
1118 if (x < inverse_edge.x2)
1119 inverse_edge.x2=x;
1120 }
1121 else
1122 if (affine->rx < -MagickEpsilon)
1123 {
1124 intercept=(-z+(double) image->rows)/affine->rx;
1125 x=intercept;
1126 if (x > inverse_edge.x1)
1127 inverse_edge.x1=x;
1128 intercept=(-z/affine->rx);
1129 x=intercept;
1130 if (x < inverse_edge.x2)
1131 inverse_edge.x2=x;
1132 }
1133 else
1134 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1135 {
1136 inverse_edge.x2=edge->x2;
1137 return(inverse_edge);
1138 }
1139 return(inverse_edge);
1140}
1141
1142static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1143{
1144 AffineMatrix
1145 inverse_affine;
1146
1147 double
1148 determinant;
1149
1150 determinant=MagickSafeReciprocal(affine->sx*affine->sy-affine->rx*
1151 affine->ry);
1152 inverse_affine.sx=determinant*affine->sy;
1153 inverse_affine.rx=determinant*(-affine->rx);
1154 inverse_affine.ry=determinant*(-affine->ry);
1155 inverse_affine.sy=determinant*affine->sx;
1156 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1157 inverse_affine.ry;
1158 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1159 inverse_affine.sy;
1160 return(inverse_affine);
1161}
1162
1163MagickExport MagickBooleanType DrawAffineImage(Image *image,
1164 const Image *source,const AffineMatrix *affine)
1165{
1166 AffineMatrix
1167 inverse_affine;
1168
1169 CacheView
1170 *image_view,
1171 *source_view;
1172
1173 ExceptionInfo
1174 *exception;
1175
1176 MagickBooleanType
1177 status;
1178
1179 MagickPixelPacket
1180 zero;
1181
1182 PointInfo
1183 extent[4],
1184 min,
1185 max,
1186 point;
1187
1188 ssize_t
1189 i;
1190
1191 SegmentInfo
1192 edge;
1193
1194 ssize_t
1195 start,
1196 stop,
1197 y;
1198
1199 /*
1200 Determine bounding box.
1201 */
1202 assert(image != (Image *) NULL);
1203 assert(image->signature == MagickCoreSignature);
1204 assert(source != (const Image *) NULL);
1205 assert(source->signature == MagickCoreSignature);
1206 if (IsEventLogging() != MagickFalse)
1207 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1208 assert(affine != (AffineMatrix *) NULL);
1209 extent[0].x=0.0;
1210 extent[0].y=0.0;
1211 extent[1].x=(double) source->columns;
1212 extent[1].y=0.0;
1213 extent[2].x=(double) source->columns;
1214 extent[2].y=(double) source->rows;
1215 extent[3].x=0.0;
1216 extent[3].y=(double) source->rows;
1217 for (i=0; i < 4; i++)
1218 {
1219 point=extent[i];
1220 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1221 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1222 }
1223 min=extent[0];
1224 max=extent[0];
1225 for (i=1; i < 4; i++)
1226 {
1227 if (min.x > extent[i].x)
1228 min.x=extent[i].x;
1229 if (min.y > extent[i].y)
1230 min.y=extent[i].y;
1231 if (max.x < extent[i].x)
1232 max.x=extent[i].x;
1233 if (max.y < extent[i].y)
1234 max.y=extent[i].y;
1235 }
1236 /*
1237 Affine transform image.
1238 */
1239 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1240 return(MagickFalse);
1241 status=MagickTrue;
1242 edge.x1=min.x;
1243 edge.y1=min.y;
1244 edge.x2=max.x;
1245 edge.y2=max.y;
1246 inverse_affine=InverseAffineMatrix(affine);
1247 if (edge.y1 < 0.0)
1248 edge.y1=0.0;
1249 if (edge.y2 > (image->rows-1.0))
1250 edge.y2=image->rows-1.0;
1251 GetMagickPixelPacket(image,&zero);
1252 exception=(&image->exception);
1253 start=CastDoubleToLong(ceil(edge.y1-0.5));
1254 stop=CastDoubleToLong(floor(edge.y2+0.5));
1255 source_view=AcquireVirtualCacheView(source,exception);
1256 image_view=AcquireAuthenticCacheView(image,exception);
1257#if defined(MAGICKCORE_OPENMP_SUPPORT)
1258 #pragma omp parallel for schedule(static) shared(status) \
1259 magick_number_threads(source,image,stop-start,1)
1260#endif
1261 for (y=start; y <= stop; y++)
1262 {
1263 IndexPacket
1264 *magick_restrict indexes;
1265
1266 MagickPixelPacket
1267 composite,
1268 pixel;
1269
1270 PointInfo
1271 point;
1272
1273 PixelPacket
1274 *magick_restrict q;
1275
1276 SegmentInfo
1277 inverse_edge;
1278
1279 ssize_t
1280 x,
1281 x_offset;
1282
1283 if (status == MagickFalse)
1284 continue;
1285 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1286 if (inverse_edge.x2 < inverse_edge.x1)
1287 continue;
1288 if (inverse_edge.x1 < 0.0)
1289 inverse_edge.x1=0.0;
1290 if (inverse_edge.x2 > image->columns-1.0)
1291 inverse_edge.x2=image->columns-1.0;
1292 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1293 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1294 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1295 if (q == (PixelPacket *) NULL)
1296 continue;
1297 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1298 pixel=zero;
1299 composite=zero;
1300 x_offset=0;
1301 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1302 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1303 {
1304 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1305 inverse_affine.tx;
1306 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1307 inverse_affine.ty;
1308 status=InterpolateMagickPixelPacket(source,source_view,
1309 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1310 if (status == MagickFalse)
1311 break;
1312 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1313 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1314 composite.opacity,&composite);
1315 SetPixelPacket(image,&composite,q,indexes+x_offset);
1316 x_offset++;
1317 q++;
1318 }
1319 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1320 status=MagickFalse;
1321 }
1322 source_view=DestroyCacheView(source_view);
1323 image_view=DestroyCacheView(image_view);
1324 return(status);
1325}
1326␌
1327/*
1328%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1329% %
1330% %
1331% %
1332+ D r a w B o u n d i n g R e c t a n g l e s %
1333% %
1334% %
1335% %
1336%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1337%
1338% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1339% is only useful for developers debugging the rendering algorithm.
1340%
1341% The format of the DrawBoundingRectangles method is:
1342%
1343% MagickBooleanType DrawBoundingRectangles(Image *image,
1344% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1345%
1346% A description of each parameter follows:
1347%
1348% o image: the image.
1349%
1350% o draw_info: the draw info.
1351%
1352% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1353%
1354*/
1355
1356static MagickBooleanType DrawBoundingRectangles(Image *image,
1357 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1358{
1359 double
1360 mid;
1361
1362 DrawInfo
1363 *clone_info;
1364
1365 MagickStatusType
1366 status;
1367
1368 PointInfo
1369 end,
1370 resolution,
1371 start;
1372
1373 PrimitiveInfo
1374 primitive_info[6];
1375
1376 ssize_t
1377 i;
1378
1379 SegmentInfo
1380 bounds;
1381
1382 ssize_t
1383 coordinates;
1384
1385 (void) memset(primitive_info,0,sizeof(primitive_info));
1386 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1387 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1388 if (status == MagickFalse)
1389 {
1390 clone_info=DestroyDrawInfo(clone_info);
1391 return(MagickFalse);
1392 }
1393 resolution.x=96.0;
1394 resolution.y=96.0;
1395 if (clone_info->density != (char *) NULL)
1396 {
1397 GeometryInfo
1398 geometry_info;
1399
1400 MagickStatusType
1401 flags;
1402
1403 flags=ParseGeometry(clone_info->density,&geometry_info);
1404 if ((flags & RhoValue) != 0)
1405 resolution.x=geometry_info.rho;
1406 resolution.y=resolution.x;
1407 if ((flags & SigmaValue) != 0)
1408 resolution.y=geometry_info.sigma;
1409 }
1410 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1411 clone_info->stroke_width/2.0;
1412 bounds.x1=0.0;
1413 bounds.y1=0.0;
1414 bounds.x2=0.0;
1415 bounds.y2=0.0;
1416 if (polygon_info != (PolygonInfo *) NULL)
1417 {
1418 bounds=polygon_info->edges[0].bounds;
1419 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1420 {
1421 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1422 bounds.x1=polygon_info->edges[i].bounds.x1;
1423 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1424 bounds.y1=polygon_info->edges[i].bounds.y1;
1425 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1426 bounds.x2=polygon_info->edges[i].bounds.x2;
1427 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1428 bounds.y2=polygon_info->edges[i].bounds.y2;
1429 }
1430 bounds.x1-=mid;
1431 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1432 image->columns ? (double) image->columns-1 : bounds.x1;
1433 bounds.y1-=mid;
1434 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1435 image->rows ? (double) image->rows-1 : bounds.y1;
1436 bounds.x2+=mid;
1437 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1438 image->columns ? (double) image->columns-1 : bounds.x2;
1439 bounds.y2+=mid;
1440 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1441 image->rows ? (double) image->rows-1 : bounds.y2;
1442 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1443 {
1444 if (polygon_info->edges[i].direction != 0)
1445 status=QueryColorDatabase("#f00",&clone_info->stroke,
1446 &image->exception);
1447 else
1448 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1449 &image->exception);
1450 if (status == MagickFalse)
1451 break;
1452 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1453 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1454 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1455 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1456 primitive_info[0].primitive=RectanglePrimitive;
1457 status&=TraceRectangle(primitive_info,start,end);
1458 primitive_info[0].method=ReplaceMethod;
1459 coordinates=(ssize_t) primitive_info[0].coordinates;
1460 primitive_info[coordinates].primitive=UndefinedPrimitive;
1461 status=DrawPrimitive(image,clone_info,primitive_info);
1462 if (status == MagickFalse)
1463 break;
1464 }
1465 if (i < (ssize_t) polygon_info->number_edges)
1466 {
1467 clone_info=DestroyDrawInfo(clone_info);
1468 return(status == 0 ? MagickFalse : MagickTrue);
1469 }
1470 }
1471 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1472 if (status == MagickFalse)
1473 {
1474 clone_info=DestroyDrawInfo(clone_info);
1475 return(MagickFalse);
1476 }
1477 start.x=(double) (bounds.x1-mid);
1478 start.y=(double) (bounds.y1-mid);
1479 end.x=(double) (bounds.x2+mid);
1480 end.y=(double) (bounds.y2+mid);
1481 primitive_info[0].primitive=RectanglePrimitive;
1482 status&=TraceRectangle(primitive_info,start,end);
1483 primitive_info[0].method=ReplaceMethod;
1484 coordinates=(ssize_t) primitive_info[0].coordinates;
1485 primitive_info[coordinates].primitive=UndefinedPrimitive;
1486 status=DrawPrimitive(image,clone_info,primitive_info);
1487 clone_info=DestroyDrawInfo(clone_info);
1488 return(status == 0 ? MagickFalse : MagickTrue);
1489}
1490␌
1491/*
1492%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1493% %
1494% %
1495% %
1496% D r a w C l i p P a t h %
1497% %
1498% %
1499% %
1500%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1501%
1502% DrawClipPath() draws the clip path on the image mask.
1503%
1504% The format of the DrawClipPath method is:
1505%
1506% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1507% const char *id)
1508%
1509% A description of each parameter follows:
1510%
1511% o image: the image.
1512%
1513% o draw_info: the draw info.
1514%
1515% o id: the clip path id.
1516%
1517*/
1518MagickExport MagickBooleanType DrawClipPath(Image *image,
1519 const DrawInfo *draw_info,const char *id)
1520{
1521 const char
1522 *clip_path;
1523
1524 Image
1525 *clipping_mask;
1526
1527 MagickBooleanType
1528 status;
1529
1530 clip_path=GetImageArtifact(image,id);
1531 if (clip_path == (const char *) NULL)
1532 return(MagickFalse);
1533 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1534 &image->exception);
1535 if (clipping_mask == (Image *) NULL)
1536 return(MagickFalse);
1537 status=SetImageClipMask(image,clipping_mask);
1538 clipping_mask=DestroyImage(clipping_mask);
1539 return(status);
1540}
1541␌
1542/*
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544% %
1545% %
1546% %
1547% D r a w C l i p p i n g M a s k %
1548% %
1549% %
1550% %
1551%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1552%
1553% DrawClippingMask() draws the clip path and returns it as an image clipping
1554% mask.
1555%
1556% The format of the DrawClippingMask method is:
1557%
1558% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1559% const char *id,const char *clip_path,ExceptionInfo *exception)
1560%
1561% A description of each parameter follows:
1562%
1563% o image: the image.
1564%
1565% o draw_info: the draw info.
1566%
1567% o id: the clip path id.
1568%
1569% o clip_path: the clip path.
1570%
1571% o exception: return any errors or warnings in this structure.
1572%
1573*/
1574static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1575 const char *id,const char *clip_path,ExceptionInfo *exception)
1576{
1577 DrawInfo
1578 *clone_info;
1579
1580 Image
1581 *clip_mask;
1582
1583 MagickStatusType
1584 status;
1585
1586 /*
1587 Draw a clip path.
1588 */
1589 assert(image != (Image *) NULL);
1590 assert(image->signature == MagickCoreSignature);
1591 assert(draw_info != (const DrawInfo *) NULL);
1592 if (IsEventLogging() != MagickFalse)
1593 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1594 clip_mask=AcquireImage((const ImageInfo *) NULL);
1595 status=SetImageExtent(clip_mask,image->columns,image->rows);
1596 if (status == MagickFalse)
1597 return(DestroyImage(clip_mask));
1598 status=SetImageClipMask(image,(Image *) NULL);
1599 status=QueryColorCompliance("#0000",AllCompliance,
1600 &clip_mask->background_color,exception);
1601 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1602 status=SetImageBackgroundColor(clip_mask);
1603 if (draw_info->debug != MagickFalse)
1604 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1605 id);
1606 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1607 (void) CloneString(&clone_info->primitive,clip_path);
1608 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1609 exception);
1610 if (clone_info->clip_mask != (char *) NULL)
1611 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1612 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1613 exception);
1614 clone_info->stroke_width=0.0;
1615 clone_info->opacity=OpaqueOpacity;
1616 clone_info->clip_path=MagickTrue;
1617 status=RenderMVGContent(clip_mask,clone_info,0);
1618 clone_info=DestroyDrawInfo(clone_info);
1619 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1620 if (draw_info->compliance != SVGCompliance)
1621 status&=NegateImage(clip_mask,MagickFalse);
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask;
1665
1666 DrawInfo
1667 *clone_info;
1668
1669 MagickStatusType
1670 status;
1671
1672 /*
1673 Draw a mask path.
1674 */
1675 assert(image != (Image *) NULL);
1676 assert(image->signature == MagickCoreSignature);
1677 assert(draw_info != (const DrawInfo *) NULL);
1678 if (IsEventLogging() != MagickFalse)
1679 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1680 composite_mask=AcquireImage((const ImageInfo *) NULL);
1681 status=SetImageExtent(composite_mask,image->columns,image->rows);
1682 if (status == MagickFalse)
1683 return(DestroyImage(composite_mask));
1684 status=SetImageMask(image,(Image *) NULL);
1685 status=QueryColorCompliance("#0000",AllCompliance,
1686 &composite_mask->background_color,exception);
1687 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1688 (void) SetImageBackgroundColor(composite_mask);
1689 if (draw_info->debug != MagickFalse)
1690 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1691 id);
1692 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1693 (void) CloneString(&clone_info->primitive,mask_path);
1694 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1695 exception);
1696 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1697 exception);
1698 clone_info->stroke_width=0.0;
1699 clone_info->opacity=OpaqueOpacity;
1700 status=RenderMVGContent(composite_mask,clone_info,0);
1701 clone_info=DestroyDrawInfo(clone_info);
1702 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1703 status&=NegateImage(composite_mask,MagickFalse);
1704 if (status == MagickFalse)
1705 composite_mask=DestroyImage(composite_mask);
1706 if (draw_info->debug != MagickFalse)
1707 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1708 return(composite_mask);
1709}
1710␌
1711/*
1712%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1713% %
1714% %
1715% %
1716+ D r a w D a s h P o l y g o n %
1717% %
1718% %
1719% %
1720%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1721%
1722% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1723% image while respecting the dash offset and dash pattern attributes.
1724%
1725% The format of the DrawDashPolygon method is:
1726%
1727% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1728% const PrimitiveInfo *primitive_info,Image *image)
1729%
1730% A description of each parameter follows:
1731%
1732% o draw_info: the draw info.
1733%
1734% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1735%
1736% o image: the image.
1737%
1738%
1739*/
1740static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1741 const PrimitiveInfo *primitive_info,Image *image)
1742{
1743 double
1744 dx,
1745 dy,
1746 length,
1747 maximum_length,
1748 offset,
1749 scale,
1750 total_length;
1751
1752 DrawInfo
1753 *clone_info;
1754
1755 MagickStatusType
1756 status;
1757
1758 PrimitiveInfo
1759 *dash_polygon;
1760
1761 ssize_t
1762 i;
1763
1764 size_t
1765 number_vertices;
1766
1767 ssize_t
1768 j,
1769 n;
1770
1771 assert(draw_info != (const DrawInfo *) NULL);
1772 if (draw_info->debug != MagickFalse)
1773 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1774 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1775 number_vertices=(size_t) i;
1776 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1777 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1778 if (dash_polygon == (PrimitiveInfo *) NULL)
1779 {
1780 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1781 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1782 return(MagickFalse);
1783 }
1784 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1785 sizeof(*dash_polygon));
1786 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1787 clone_info->miterlimit=0;
1788 dash_polygon[0]=primitive_info[0];
1789 dash_polygon[0].closed_subpath=MagickFalse;
1790 scale=ExpandAffine(&draw_info->affine);
1791 length=scale*draw_info->dash_pattern[0];
1792 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793 scale*draw_info->dash_offset : 0.0;
1794 j=1;
1795 for (n=0; offset > 0.0; j=0)
1796 {
1797 if (draw_info->dash_pattern[n] <= 0.0)
1798 break;
1799 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800 if (offset > length)
1801 {
1802 offset-=length;
1803 n++;
1804 length=scale*draw_info->dash_pattern[n];
1805 continue;
1806 }
1807 if (offset < length)
1808 {
1809 length-=offset;
1810 offset=0.0;
1811 break;
1812 }
1813 offset=0.0;
1814 n++;
1815 }
1816 status=MagickTrue;
1817 maximum_length=0.0;
1818 total_length=0.0;
1819 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820 {
1821 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823 maximum_length=hypot(dx,dy);
1824 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825 continue;
1826 if (fabs(length) < MagickEpsilon)
1827 {
1828 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829 n++;
1830 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831 n=0;
1832 length=scale*draw_info->dash_pattern[n];
1833 }
1834 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835 {
1836 total_length+=length;
1837 if ((n & 0x01) != 0)
1838 {
1839 dash_polygon[0]=primitive_info[0];
1840 dash_polygon[0].closed_subpath=MagickFalse;
1841 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1842 total_length*MagickSafeReciprocal(maximum_length));
1843 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1844 total_length*MagickSafeReciprocal(maximum_length));
1845 j=1;
1846 }
1847 else
1848 {
1849 if ((j+1) > (ssize_t) number_vertices)
1850 break;
1851 dash_polygon[j]=primitive_info[i-1];
1852 dash_polygon[j].closed_subpath=MagickFalse;
1853 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 dash_polygon[j].coordinates=1;
1858 j++;
1859 dash_polygon[0].coordinates=(size_t) j;
1860 dash_polygon[j].primitive=UndefinedPrimitive;
1861 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1862 if (status == MagickFalse)
1863 break;
1864 }
1865 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1866 n++;
1867 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1868 n=0;
1869 length=scale*draw_info->dash_pattern[n];
1870 }
1871 length-=(maximum_length-total_length);
1872 if ((n & 0x01) != 0)
1873 continue;
1874 dash_polygon[j]=primitive_info[i];
1875 dash_polygon[j].coordinates=1;
1876 j++;
1877 }
1878 if ((status != MagickFalse) && (total_length < maximum_length) &&
1879 ((n & 0x01) == 0) && (j > 1))
1880 {
1881 dash_polygon[j]=primitive_info[i-1];
1882 dash_polygon[j].closed_subpath=MagickFalse;
1883 dash_polygon[j].point.x+=MagickEpsilon;
1884 dash_polygon[j].point.y+=MagickEpsilon;
1885 dash_polygon[j].coordinates=1;
1886 j++;
1887 dash_polygon[0].coordinates=(size_t) j;
1888 dash_polygon[j].primitive=UndefinedPrimitive;
1889 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1890 }
1891 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1892 clone_info=DestroyDrawInfo(clone_info);
1893 if (draw_info->debug != MagickFalse)
1894 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1895 return(status != 0 ? MagickTrue : MagickFalse);
1896}
1897␌
1898/*
1899%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1900% %
1901% %
1902% %
1903% D r a w G r a d i e n t I m a g e %
1904% %
1905% %
1906% %
1907%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1908%
1909% DrawGradientImage() draws a linear gradient on the image.
1910%
1911% The format of the DrawGradientImage method is:
1912%
1913% MagickBooleanType DrawGradientImage(Image *image,
1914% const DrawInfo *draw_info)
1915%
1916% A description of each parameter follows:
1917%
1918% o image: the image.
1919%
1920% o draw_info: the draw info.
1921%
1922*/
1923
1924static inline double GetStopColorOffset(const GradientInfo *gradient,
1925 const ssize_t x,const ssize_t y)
1926{
1927 switch (gradient->type)
1928 {
1929 case UndefinedGradient:
1930 case LinearGradient:
1931 {
1932 double
1933 gamma,
1934 length,
1935 offset,
1936 scale;
1937
1938 PointInfo
1939 p,
1940 q;
1941
1942 const SegmentInfo
1943 *gradient_vector;
1944
1945 gradient_vector=(&gradient->gradient_vector);
1946 p.x=gradient_vector->x2-gradient_vector->x1;
1947 p.y=gradient_vector->y2-gradient_vector->y1;
1948 q.x=(double) x-gradient_vector->x1;
1949 q.y=(double) y-gradient_vector->y1;
1950 length=sqrt(q.x*q.x+q.y*q.y);
1951 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1952 gamma=MagickSafeReciprocal(gamma);
1953 scale=p.x*q.x+p.y*q.y;
1954 offset=gamma*scale*length;
1955 return(offset);
1956 }
1957 case RadialGradient:
1958 {
1959 PointInfo
1960 v;
1961
1962 if (gradient->spread == RepeatSpread)
1963 {
1964 v.x=(double) x-gradient->center.x;
1965 v.y=(double) y-gradient->center.y;
1966 return(sqrt(v.x*v.x+v.y*v.y));
1967 }
1968 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1969 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1970 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1971 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1972 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1973 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1974 return(sqrt(v.x*v.x+v.y*v.y));
1975 }
1976 }
1977 return(0.0);
1978}
1979
1980MagickExport MagickBooleanType DrawGradientImage(Image *image,
1981 const DrawInfo *draw_info)
1982{
1983 CacheView
1984 *image_view;
1985
1986 const GradientInfo
1987 *gradient;
1988
1989 const SegmentInfo
1990 *gradient_vector;
1991
1992 double
1993 length;
1994
1995 ExceptionInfo
1996 *exception;
1997
1998 MagickBooleanType
1999 status;
2000
2001 MagickPixelPacket
2002 zero;
2003
2004 PointInfo
2005 point;
2006
2007 RectangleInfo
2008 bounding_box;
2009
2010 ssize_t
2011 height,
2012 y;
2013
2014 /*
2015 Draw linear or radial gradient on image.
2016 */
2017 assert(image != (Image *) NULL);
2018 assert(image->signature == MagickCoreSignature);
2019 assert(draw_info != (const DrawInfo *) NULL);
2020 if (IsEventLogging() != MagickFalse)
2021 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2022 gradient=(&draw_info->gradient);
2023 gradient_vector=(&gradient->gradient_vector);
2024 point.x=gradient_vector->x2-gradient_vector->x1;
2025 point.y=gradient_vector->y2-gradient_vector->y1;
2026 length=sqrt(point.x*point.x+point.y*point.y);
2027 bounding_box=gradient->bounding_box;
2028 status=MagickTrue;
2029 exception=(&image->exception);
2030 GetMagickPixelPacket(image,&zero);
2031 image_view=AcquireAuthenticCacheView(image,exception);
2032 height=(size_t) (bounding_box.y+bounding_box.height);
2033#if defined(MAGICKCORE_OPENMP_SUPPORT)
2034 #pragma omp parallel for schedule(static) shared(status) \
2035 magick_number_threads(image,image,height,1)
2036#endif
2037 for (y=bounding_box.y; y < (ssize_t) height; y++)
2038 {
2039 double
2040 alpha,
2041 offset;
2042
2043 MagickPixelPacket
2044 composite,
2045 pixel;
2046
2047 IndexPacket
2048 *magick_restrict indexes;
2049
2050 PixelPacket
2051 *magick_restrict q;
2052
2053 ssize_t
2054 i,
2055 j,
2056 width,
2057 x;
2058
2059 if (status == MagickFalse)
2060 continue;
2061 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2062 bounding_box.width,1,exception);
2063 if (q == (PixelPacket *) NULL)
2064 {
2065 status=MagickFalse;
2066 continue;
2067 }
2068 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2069 pixel=zero;
2070 composite=zero;
2071 offset=GetStopColorOffset(gradient,0,y);
2072 if (gradient->type != RadialGradient)
2073 offset*=MagickSafeReciprocal(length);
2074 width=(size_t) (bounding_box.x+bounding_box.width);
2075 for (x=bounding_box.x; x < (ssize_t) width; x++)
2076 {
2077 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2078 switch (gradient->spread)
2079 {
2080 case UndefinedSpread:
2081 case PadSpread:
2082 {
2083 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2084 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2085 {
2086 offset=GetStopColorOffset(gradient,x,y);
2087 if (gradient->type != RadialGradient)
2088 offset*=MagickSafeReciprocal(length);
2089 }
2090 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2091 if (offset < gradient->stops[i].offset)
2092 break;
2093 if ((offset < 0.0) || (i == 0))
2094 composite=gradient->stops[0].color;
2095 else
2096 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2097 composite=gradient->stops[gradient->number_stops-1].color;
2098 else
2099 {
2100 j=i;
2101 i--;
2102 alpha=(offset-gradient->stops[i].offset)/
2103 (gradient->stops[j].offset-gradient->stops[i].offset);
2104 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2105 &gradient->stops[j].color,alpha,&composite);
2106 }
2107 break;
2108 }
2109 case ReflectSpread:
2110 {
2111 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2112 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2113 {
2114 offset=GetStopColorOffset(gradient,x,y);
2115 if (gradient->type != RadialGradient)
2116 offset*=MagickSafeReciprocal(length);
2117 }
2118 if (offset < 0.0)
2119 offset=(-offset);
2120 if ((ssize_t) fmod(offset,2.0) == 0)
2121 offset=fmod(offset,1.0);
2122 else
2123 offset=1.0-fmod(offset,1.0);
2124 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2125 if (offset < gradient->stops[i].offset)
2126 break;
2127 if (i == 0)
2128 composite=gradient->stops[0].color;
2129 else
2130 if (i == (ssize_t) gradient->number_stops)
2131 composite=gradient->stops[gradient->number_stops-1].color;
2132 else
2133 {
2134 j=i;
2135 i--;
2136 alpha=(offset-gradient->stops[i].offset)/
2137 (gradient->stops[j].offset-gradient->stops[i].offset);
2138 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2139 &gradient->stops[j].color,alpha,&composite);
2140 }
2141 break;
2142 }
2143 case RepeatSpread:
2144 {
2145 double
2146 repeat;
2147
2148 MagickBooleanType
2149 antialias;
2150
2151 antialias=MagickFalse;
2152 repeat=0.0;
2153 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2154 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2155 {
2156 offset=GetStopColorOffset(gradient,x,y);
2157 if (gradient->type == LinearGradient)
2158 {
2159 repeat=fmod(offset,length);
2160 if (repeat < 0.0)
2161 repeat=length-fmod(-repeat,length);
2162 else
2163 repeat=fmod(offset,length);
2164 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2165 MagickTrue : MagickFalse;
2166 offset=MagickSafeReciprocal(length)*repeat;
2167 }
2168 else
2169 {
2170 repeat=fmod(offset,(double) gradient->radius);
2171 if (repeat < 0.0)
2172 repeat=gradient->radius-fmod(-repeat,
2173 (double) gradient->radius);
2174 else
2175 repeat=fmod(offset,(double) gradient->radius);
2176 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2177 MagickFalse;
2178 offset=repeat*MagickSafeReciprocal(gradient->radius);
2179 }
2180 }
2181 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2182 if (offset < gradient->stops[i].offset)
2183 break;
2184 if (i == 0)
2185 composite=gradient->stops[0].color;
2186 else
2187 if (i == (ssize_t) gradient->number_stops)
2188 composite=gradient->stops[gradient->number_stops-1].color;
2189 else
2190 {
2191 j=i;
2192 i--;
2193 alpha=(offset-gradient->stops[i].offset)/
2194 (gradient->stops[j].offset-gradient->stops[i].offset);
2195 if (antialias != MagickFalse)
2196 {
2197 if (gradient->type == LinearGradient)
2198 alpha=length-repeat;
2199 else
2200 alpha=gradient->radius-repeat;
2201 i=0;
2202 j=(ssize_t) gradient->number_stops-1L;
2203 }
2204 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2205 &gradient->stops[j].color,alpha,&composite);
2206 }
2207 break;
2208 }
2209 }
2210 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2211 pixel.opacity,&pixel);
2212 SetPixelPacket(image,&pixel,q,indexes+x);
2213 q++;
2214 }
2215 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2216 status=MagickFalse;
2217 }
2218 image_view=DestroyCacheView(image_view);
2219 return(status);
2220}
2221␌
2222/*
2223%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2224% %
2225% %
2226% %
2227% D r a w I m a g e %
2228% %
2229% %
2230% %
2231%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2232%
2233% DrawImage() draws a graphic primitive on your image. The primitive
2234% may be represented as a string or filename. Precede the filename with an
2235% "at" sign (@) and the contents of the file are drawn on the image. You
2236% can affect how text is drawn by setting one or more members of the draw
2237% info structure.
2238%
2239% The format of the DrawImage method is:
2240%
2241% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2242%
2243% A description of each parameter follows:
2244%
2245% o image: the image.
2246%
2247% o draw_info: the draw info.
2248%
2249*/
2250
2251static inline MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2252 const double pad)
2253{
2254 double
2255 proposed_extent;
2256
2257 PrimitiveInfo
2258 *primitive_info;
2259
2260 size_t
2261 extent;
2262
2263 ssize_t
2264 i;
2265
2266 if ((mvg_info == (MVGInfo *) NULL) ||
2267 (mvg_info->primitive_info == (PrimitiveInfo **) NULL) ||
2268 (*mvg_info->primitive_info == (PrimitiveInfo *) NULL) ||
2269 (mvg_info->extent == (size_t *) NULL))
2270 return(MagickFalse);
2271 proposed_extent=mvg_info->offset+pad+PrimitiveExtentPad+1.0;
2272 if ((proposed_extent <= 0.0) || (proposed_extent > (double) MAGICK_SIZE_MAX))
2273 return(MagickFalse);
2274 extent=CastDoubleToSizeT(ceil(proposed_extent));
2275 if (extent <= *mvg_info->extent)
2276 return(MagickTrue);
2277 if (extent > (GetMaxMemoryRequest()/sizeof(PrimitiveInfo)))
2278 return(MagickFalse);
2279 primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2280 *mvg_info->primitive_info,extent,sizeof(PrimitiveInfo));
2281 if (primitive_info == (PrimitiveInfo *) NULL)
2282 {
2283 /*
2284 Leave old buffer intact; report failure.
2285 */
2286 ThrowMagickException(mvg_info->exception,GetMagickModule(),
2287 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2288 return(MagickFalse);
2289 }
2290 /*
2291 Commit updated buffer.
2292 */
2293 for (i=(ssize_t) *mvg_info->extent; i < (ssize_t) extent; i++)
2294 {
2295 primitive_info[i].primitive=UndefinedPrimitive;
2296 primitive_info[i].text=(char *) NULL;
2297 }
2298 *mvg_info->primitive_info=primitive_info;
2299 *mvg_info->extent=extent;
2300 return(MagickTrue);
2301}
2302
2303static inline double GetDrawValue(const char *magick_restrict string,
2304 char **magick_restrict sentinel)
2305{
2306 char
2307 **magick_restrict q;
2308
2309 double
2310 value;
2311
2312 q=sentinel;
2313 value=InterpretLocaleValue(string,q);
2314 sentinel=q;
2315 return(value);
2316}
2317
2318static int MVGMacroCompare(const void *target,const void *source)
2319{
2320 const char
2321 *p,
2322 *q;
2323
2324 p=(const char *) target;
2325 q=(const char *) source;
2326 return(strcmp(p,q));
2327}
2328
2329static SplayTreeInfo *GetMVGMacros(const char *primitive)
2330{
2331 char
2332 *macro,
2333 *token;
2334
2335 const char
2336 *q;
2337
2338 size_t
2339 extent;
2340
2341 SplayTreeInfo
2342 *macros;
2343
2344 /*
2345 Scan graphic primitives for definitions and classes.
2346 */
2347 if (primitive == (const char *) NULL)
2348 return((SplayTreeInfo *) NULL);
2349 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2350 RelinquishMagickMemory);
2351 macro=AcquireString(primitive);
2352 token=AcquireString(primitive);
2353 extent=strlen(token)+MagickPathExtent;
2354 for (q=primitive; *q != '\0'; )
2355 {
2356 if (GetNextToken(q,&q,extent,token) < 1)
2357 break;
2358 if (*token == '\0')
2359 break;
2360 if (LocaleCompare("push",token) == 0)
2361 {
2362 const char
2363 *end,
2364 *start;
2365
2366 (void) GetNextToken(q,&q,extent,token);
2367 if (*q == '"')
2368 {
2369 char
2370 name[MagickPathExtent];
2371
2372 const char
2373 *p;
2374
2375 ssize_t
2376 n;
2377
2378 /*
2379 Named macro (e.g. push graphic-context "wheel").
2380 */
2381 (void) GetNextToken(q,&q,extent,token);
2382 start=q;
2383 end=q;
2384 (void) CopyMagickString(name,token,MagickPathExtent);
2385 n=1;
2386 for (p=q; *p != '\0'; )
2387 {
2388 if (GetNextToken(p,&p,extent,token) < 1)
2389 break;
2390 if (*token == '\0')
2391 break;
2392 if (LocaleCompare(token,"pop") == 0)
2393 {
2394 end=p-strlen(token)-1;
2395 n--;
2396 }
2397 if (LocaleCompare(token,"push") == 0)
2398 n++;
2399 if ((n == 0) && (end >= start))
2400 {
2401 size_t
2402 length=(size_t) (end-start);
2403
2404 /*
2405 Extract macro.
2406 */
2407 (void) GetNextToken(p,&p,extent,token);
2408 if (length > 0)
2409 {
2410 (void) CopyMagickString(macro,start,length);
2411 (void) AddValueToSplayTree(macros,ConstantString(name),
2412 ConstantString(macro));
2413 }
2414 break;
2415 }
2416 }
2417 }
2418 }
2419 }
2420 token=DestroyString(token);
2421 macro=DestroyString(macro);
2422 return(macros);
2423}
2424
2425static inline MagickBooleanType IsPoint(const char *point)
2426{
2427 char
2428 *p;
2429
2430 double
2431 value;
2432
2433 value=GetDrawValue(point,&p);
2434 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2435 MagickTrue);
2436}
2437
2438static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2439 const PointInfo point)
2440{
2441 primitive_info->point=point;
2442 primitive_info->coordinates=1;
2443 primitive_info->closed_subpath=MagickFalse;
2444 primitive_info->text=(char *) NULL;
2445 return(MagickTrue);
2446}
2447
2448static MagickBooleanType RenderMVGContent(Image *image,
2449 const DrawInfo *draw_info,const size_t depth)
2450{
2451#define RenderImageTag "Render/Image"
2452
2453 AffineMatrix
2454 affine,
2455 current;
2456
2457 char
2458 key[2*MaxTextExtent],
2459 keyword[MaxTextExtent],
2460 geometry[MaxTextExtent],
2461 name[MaxTextExtent],
2462 *next_token,
2463 pattern[MaxTextExtent],
2464 *primitive,
2465 *token;
2466
2467 const char
2468 *p,
2469 *q;
2470
2471 double
2472 angle,
2473 coordinates,
2474 cursor,
2475 factor,
2476 primitive_extent;
2477
2478 DrawInfo
2479 *clone_info,
2480 **graphic_context;
2481
2482 MagickBooleanType
2483 proceed;
2484
2485 MagickStatusType
2486 status;
2487
2488 MVGInfo
2489 mvg_info;
2490
2491 PointInfo
2492 point;
2493
2494 PixelPacket
2495 start_color;
2496
2497 PrimitiveInfo
2498 *primitive_info;
2499
2500 PrimitiveType
2501 primitive_type;
2502
2503 SegmentInfo
2504 bounds;
2505
2506 size_t
2507 extent,
2508 number_points;
2509
2510 SplayTreeInfo
2511 *macros;
2512
2513 ssize_t
2514 classDepth = 0,
2515 defsDepth,
2516 i,
2517 j,
2518 k,
2519 n,
2520 symbolDepth,
2521 x;
2522
2523 TypeMetric
2524 metrics;
2525
2526 assert(image != (Image *) NULL);
2527 assert(image->signature == MagickCoreSignature);
2528 assert(draw_info != (DrawInfo *) NULL);
2529 assert(draw_info->signature == MagickCoreSignature);
2530 if (IsEventLogging() != MagickFalse)
2531 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2532 if (depth > MagickMaxRecursionDepth)
2533 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2534 image->filename);
2535 if ((draw_info->primitive == (char *) NULL) ||
2536 (*draw_info->primitive == '\0'))
2537 return(MagickFalse);
2538 if (draw_info->debug != MagickFalse)
2539 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2540 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2541 return(MagickFalse);
2542 if (image->matte == MagickFalse)
2543 {
2544 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2545 if (status == MagickFalse)
2546 return(MagickFalse);
2547 }
2548 primitive=(char *) NULL;
2549 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2550 (*(draw_info->primitive+1) != '-') && (depth == 0))
2551 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2552 else
2553 primitive=AcquireString(draw_info->primitive);
2554 if (primitive == (char *) NULL)
2555 return(MagickFalse);
2556 primitive_extent=(double) strlen(primitive);
2557 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2558 n=0;
2559 /*
2560 Allocate primitive info memory.
2561 */
2562 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2563 if (graphic_context == (DrawInfo **) NULL)
2564 {
2565 primitive=DestroyString(primitive);
2566 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2567 image->filename);
2568 }
2569 number_points=(size_t) PrimitiveExtentPad;
2570 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2571 (number_points+1),sizeof(*primitive_info));
2572 if (primitive_info == (PrimitiveInfo *) NULL)
2573 {
2574 primitive=DestroyString(primitive);
2575 for ( ; n >= 0; n--)
2576 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2577 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2578 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2579 image->filename);
2580 }
2581 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2582 sizeof(*primitive_info));
2583 (void) memset(&mvg_info,0,sizeof(mvg_info));
2584 mvg_info.primitive_info=(&primitive_info);
2585 mvg_info.extent=(&number_points);
2586 mvg_info.exception=(&image->exception);
2587 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2588 graphic_context[n]->viewbox=image->page;
2589 if ((image->page.width == 0) || (image->page.height == 0))
2590 {
2591 graphic_context[n]->viewbox.width=image->columns;
2592 graphic_context[n]->viewbox.height=image->rows;
2593 }
2594 token=AcquireString(primitive);
2595 extent=strlen(token)+MaxTextExtent;
2596 cursor=0.0;
2597 defsDepth=0;
2598 symbolDepth=0;
2599 macros=GetMVGMacros(primitive);
2600 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2601 for (q=primitive; *q != '\0'; )
2602 {
2603 /*
2604 Interpret graphic primitive.
2605 */
2606 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2607 break;
2608 if (*keyword == '\0')
2609 break;
2610 if (*keyword == '#')
2611 {
2612 /*
2613 Comment.
2614 */
2615 while ((*q != '\n') && (*q != '\0'))
2616 q++;
2617 continue;
2618 }
2619 p=q-strlen(keyword)-1;
2620 primitive_type=UndefinedPrimitive;
2621 current=graphic_context[n]->affine;
2622 GetAffineMatrix(&affine);
2623 *token='\0';
2624 switch (*keyword)
2625 {
2626 case ';':
2627 break;
2628 case 'a':
2629 case 'A':
2630 {
2631 if (LocaleCompare("affine",keyword) == 0)
2632 {
2633 (void) GetNextToken(q,&q,extent,token);
2634 affine.sx=GetDrawValue(token,&next_token);
2635 if (token == next_token)
2636 ThrowPointExpectedException(image,token);
2637 (void) GetNextToken(q,&q,extent,token);
2638 if (*token == ',')
2639 (void) GetNextToken(q,&q,extent,token);
2640 affine.ry=GetDrawValue(token,&next_token);
2641 if (token == next_token)
2642 ThrowPointExpectedException(image,token);
2643 (void) GetNextToken(q,&q,extent,token);
2644 if (*token == ',')
2645 (void) GetNextToken(q,&q,extent,token);
2646 affine.rx=GetDrawValue(token,&next_token);
2647 if (token == next_token)
2648 ThrowPointExpectedException(image,token);
2649 (void) GetNextToken(q,&q,extent,token);
2650 if (*token == ',')
2651 (void) GetNextToken(q,&q,extent,token);
2652 affine.sy=GetDrawValue(token,&next_token);
2653 if (token == next_token)
2654 ThrowPointExpectedException(image,token);
2655 (void) GetNextToken(q,&q,extent,token);
2656 if (*token == ',')
2657 (void) GetNextToken(q,&q,extent,token);
2658 affine.tx=GetDrawValue(token,&next_token);
2659 if (token == next_token)
2660 ThrowPointExpectedException(image,token);
2661 (void) GetNextToken(q,&q,extent,token);
2662 if (*token == ',')
2663 (void) GetNextToken(q,&q,extent,token);
2664 affine.ty=GetDrawValue(token,&next_token);
2665 if (token == next_token)
2666 ThrowPointExpectedException(image,token);
2667 break;
2668 }
2669 if (LocaleCompare("arc",keyword) == 0)
2670 {
2671 primitive_type=ArcPrimitive;
2672 break;
2673 }
2674 status=MagickFalse;
2675 break;
2676 }
2677 case 'b':
2678 case 'B':
2679 {
2680 if (LocaleCompare("bezier",keyword) == 0)
2681 {
2682 primitive_type=BezierPrimitive;
2683 break;
2684 }
2685 if (LocaleCompare("border-color",keyword) == 0)
2686 {
2687 (void) GetNextToken(q,&q,extent,token);
2688 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2689 &image->exception);
2690 break;
2691 }
2692 status=MagickFalse;
2693 break;
2694 }
2695 case 'c':
2696 case 'C':
2697 {
2698 if (LocaleCompare("class",keyword) == 0)
2699 {
2700 const char
2701 *mvg_class;
2702
2703 (void) GetNextToken(q,&q,extent,token);
2704 if ((*token == '\0') || (*token == ';'))
2705 {
2706 status=MagickFalse;
2707 break;
2708 }
2709 /*
2710 Identify recursion.
2711 */
2712 for (i=0; i <= n; i++)
2713 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2714 break;
2715 if (i <= n)
2716 break;
2717 if (classDepth++ > MagickMaxRecursionDepth)
2718 {
2719 (void) ThrowMagickException(&image->exception,GetMagickModule(),
2720 DrawError,"VectorGraphicsNestedTooDeeply","`%s'",token);
2721 status=MagickFalse;
2722 break;
2723 }
2724 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2725 if ((graphic_context[n]->render != MagickFalse) &&
2726 (mvg_class != (const char *) NULL) && (p > primitive))
2727 {
2728 char
2729 *elements;
2730
2731 ssize_t
2732 offset;
2733
2734 /*
2735 Inject class elements in stream.
2736 */
2737 (void) CloneString(&graphic_context[n]->id,token);
2738 offset=(ssize_t) (p-primitive);
2739 elements=AcquireString(primitive);
2740 elements[offset]='\0';
2741 (void) ConcatenateString(&elements,mvg_class);
2742 (void) ConcatenateString(&elements,"\n");
2743 (void) ConcatenateString(&elements,q);
2744 primitive=DestroyString(primitive);
2745 primitive=elements;
2746 q=primitive+offset;
2747 }
2748 break;
2749 }
2750 if (LocaleCompare("clip-path",keyword) == 0)
2751 {
2752 const char
2753 *clip_path;
2754
2755 /*
2756 Take a node from within the MVG document, and duplicate it here.
2757 */
2758 (void) GetNextToken(q,&q,extent,token);
2759 if (*token == '\0')
2760 {
2761 status=MagickFalse;
2762 break;
2763 }
2764 (void) CloneString(&graphic_context[n]->clip_mask,token);
2765 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2766 if (clip_path != (const char *) NULL)
2767 {
2768 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2769 graphic_context[n]->clipping_mask=
2770 DestroyImage(graphic_context[n]->clipping_mask);
2771 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2772 graphic_context[n],token,clip_path,&image->exception);
2773 if (graphic_context[n]->compliance != SVGCompliance)
2774 {
2775 const char
2776 *clip_path;
2777
2778 clip_path=(const char *) GetValueFromSplayTree(macros,
2779 graphic_context[n]->clip_mask);
2780 if (clip_path != (const char *) NULL)
2781 (void) SetImageArtifact(image,
2782 graphic_context[n]->clip_mask,clip_path);
2783 status&=DrawClipPath(image,graphic_context[n],
2784 graphic_context[n]->clip_mask);
2785 }
2786 }
2787 break;
2788 }
2789 if (LocaleCompare("clip-rule",keyword) == 0)
2790 {
2791 ssize_t
2792 fill_rule;
2793
2794 (void) GetNextToken(q,&q,extent,token);
2795 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2796 token);
2797 if (fill_rule == -1)
2798 {
2799 status=MagickFalse;
2800 break;
2801 }
2802 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2803 break;
2804 }
2805 if (LocaleCompare("clip-units",keyword) == 0)
2806 {
2807 ssize_t
2808 clip_units;
2809
2810 (void) GetNextToken(q,&q,extent,token);
2811 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2812 token);
2813 if (clip_units == -1)
2814 {
2815 status=MagickFalse;
2816 break;
2817 }
2818 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2819 if (clip_units == ObjectBoundingBox)
2820 {
2821 GetAffineMatrix(&current);
2822 affine.sx=draw_info->bounds.x2;
2823 affine.sy=draw_info->bounds.y2;
2824 affine.tx=draw_info->bounds.x1;
2825 affine.ty=draw_info->bounds.y1;
2826 break;
2827 }
2828 break;
2829 }
2830 if (LocaleCompare("circle",keyword) == 0)
2831 {
2832 primitive_type=CirclePrimitive;
2833 break;
2834 }
2835 if (LocaleCompare("color",keyword) == 0)
2836 {
2837 primitive_type=ColorPrimitive;
2838 break;
2839 }
2840 if (LocaleCompare("compliance",keyword) == 0)
2841 {
2842 /*
2843 MVG compliance associates a clipping mask with an image; SVG
2844 compliance associates a clipping mask with a graphics context.
2845 */
2846 (void) GetNextToken(q,&q,extent,token);
2847 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2848 MagickComplianceOptions,MagickFalse,token);
2849 break;
2850 }
2851 if (LocaleCompare("currentColor",keyword) == 0)
2852 {
2853 (void) GetNextToken(q,&q,extent,token);
2854 break;
2855 }
2856 status=MagickFalse;
2857 break;
2858 }
2859 case 'd':
2860 case 'D':
2861 {
2862 if (LocaleCompare("decorate",keyword) == 0)
2863 {
2864 ssize_t
2865 decorate;
2866
2867 (void) GetNextToken(q,&q,extent,token);
2868 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2869 token);
2870 if (decorate == -1)
2871 {
2872 status=MagickFalse;
2873 break;
2874 }
2875 graphic_context[n]->decorate=(DecorationType) decorate;
2876 break;
2877 }
2878 if (LocaleCompare("density",keyword) == 0)
2879 {
2880 (void) GetNextToken(q,&q,extent,token);
2881 (void) CloneString(&graphic_context[n]->density,token);
2882 break;
2883 }
2884 if (LocaleCompare("direction",keyword) == 0)
2885 {
2886 ssize_t
2887 direction;
2888
2889 (void) GetNextToken(q,&q,extent,token);
2890 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2891 token);
2892 if (direction == -1)
2893 status=MagickFalse;
2894 else
2895 graphic_context[n]->direction=(DirectionType) direction;
2896 break;
2897 }
2898 status=MagickFalse;
2899 break;
2900 }
2901 case 'e':
2902 case 'E':
2903 {
2904 if (LocaleCompare("ellipse",keyword) == 0)
2905 {
2906 primitive_type=EllipsePrimitive;
2907 break;
2908 }
2909 if (LocaleCompare("encoding",keyword) == 0)
2910 {
2911 (void) GetNextToken(q,&q,extent,token);
2912 (void) CloneString(&graphic_context[n]->encoding,token);
2913 break;
2914 }
2915 status=MagickFalse;
2916 break;
2917 }
2918 case 'f':
2919 case 'F':
2920 {
2921 if (LocaleCompare("fill",keyword) == 0)
2922 {
2923 const char
2924 *mvg_class;
2925
2926 (void) GetNextToken(q,&q,extent,token);
2927 if (graphic_context[n]->clip_path != MagickFalse)
2928 break;
2929 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2930 if (mvg_class != (const char *) NULL)
2931 {
2932 (void) DrawPatternPath(image,draw_info,mvg_class,
2933 &graphic_context[n]->fill_pattern);
2934 break;
2935 }
2936 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2937 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2938 {
2939 (void) DrawPatternPath(image,draw_info,token,
2940 &graphic_context[n]->fill_pattern);
2941 break;
2942 }
2943 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2944 &image->exception);
2945 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2946 graphic_context[n]->fill.opacity=ClampToQuantum(
2947 graphic_context[n]->fill_opacity);
2948 break;
2949 }
2950 if (LocaleCompare("fill-opacity",keyword) == 0)
2951 {
2952 double
2953 opacity;
2954
2955 (void) GetNextToken(q,&q,extent,token);
2956 if (graphic_context[n]->clip_path != MagickFalse)
2957 break;
2958 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2959 opacity=MagickMin(MagickMax(factor*
2960 GetDrawValue(token,&next_token),0.0),1.0);
2961 if (token == next_token)
2962 ThrowPointExpectedException(image,token);
2963 if (graphic_context[n]->compliance == SVGCompliance)
2964 graphic_context[n]->fill_opacity*=(1.0-opacity);
2965 else
2966 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2967 graphic_context[n]->fill_opacity)*(1.0-opacity);
2968 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2969 graphic_context[n]->fill.opacity=(Quantum)
2970 graphic_context[n]->fill_opacity;
2971 else
2972 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2973 QuantumRange*(1.0-opacity));
2974 break;
2975 }
2976 if (LocaleCompare("fill-rule",keyword) == 0)
2977 {
2978 ssize_t
2979 fill_rule;
2980
2981 (void) GetNextToken(q,&q,extent,token);
2982 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2983 token);
2984 if (fill_rule == -1)
2985 {
2986 status=MagickFalse;
2987 break;
2988 }
2989 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2990 break;
2991 }
2992 if (LocaleCompare("font",keyword) == 0)
2993 {
2994 (void) GetNextToken(q,&q,extent,token);
2995 (void) CloneString(&graphic_context[n]->font,token);
2996 if (LocaleCompare("none",token) == 0)
2997 graphic_context[n]->font=(char *) RelinquishMagickMemory(
2998 graphic_context[n]->font);
2999 break;
3000 }
3001 if (LocaleCompare("font-family",keyword) == 0)
3002 {
3003 (void) GetNextToken(q,&q,extent,token);
3004 (void) CloneString(&graphic_context[n]->family,token);
3005 break;
3006 }
3007 if (LocaleCompare("font-size",keyword) == 0)
3008 {
3009 (void) GetNextToken(q,&q,extent,token);
3010 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3011 if (token == next_token)
3012 ThrowPointExpectedException(image,token);
3013 break;
3014 }
3015 if (LocaleCompare("font-stretch",keyword) == 0)
3016 {
3017 ssize_t
3018 stretch;
3019
3020 (void) GetNextToken(q,&q,extent,token);
3021 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3022 if (stretch == -1)
3023 {
3024 status=MagickFalse;
3025 break;
3026 }
3027 graphic_context[n]->stretch=(StretchType) stretch;
3028 break;
3029 }
3030 if (LocaleCompare("font-style",keyword) == 0)
3031 {
3032 ssize_t
3033 style;
3034
3035 (void) GetNextToken(q,&q,extent,token);
3036 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3037 if (style == -1)
3038 {
3039 status=MagickFalse;
3040 break;
3041 }
3042 graphic_context[n]->style=(StyleType) style;
3043 break;
3044 }
3045 if (LocaleCompare("font-weight",keyword) == 0)
3046 {
3047 ssize_t
3048 weight;
3049
3050 (void) GetNextToken(q,&q,extent,token);
3051 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3052 if (weight == -1)
3053 weight=(ssize_t) StringToUnsignedLong(token);
3054 graphic_context[n]->weight=(size_t) weight;
3055 break;
3056 }
3057 status=MagickFalse;
3058 break;
3059 }
3060 case 'g':
3061 case 'G':
3062 {
3063 if (LocaleCompare("gradient-units",keyword) == 0)
3064 {
3065 (void) GetNextToken(q,&q,extent,token);
3066 break;
3067 }
3068 if (LocaleCompare("gravity",keyword) == 0)
3069 {
3070 ssize_t
3071 gravity;
3072
3073 (void) GetNextToken(q,&q,extent,token);
3074 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3075 if (gravity == -1)
3076 {
3077 status=MagickFalse;
3078 break;
3079 }
3080 graphic_context[n]->gravity=(GravityType) gravity;
3081 break;
3082 }
3083 status=MagickFalse;
3084 break;
3085 }
3086 case 'i':
3087 case 'I':
3088 {
3089 if (LocaleCompare("image",keyword) == 0)
3090 {
3091 ssize_t
3092 compose;
3093
3094 primitive_type=ImagePrimitive;
3095 (void) GetNextToken(q,&q,extent,token);
3096 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3097 if (compose == -1)
3098 {
3099 status=MagickFalse;
3100 break;
3101 }
3102 graphic_context[n]->compose=(CompositeOperator) compose;
3103 break;
3104 }
3105 if (LocaleCompare("interline-spacing",keyword) == 0)
3106 {
3107 (void) GetNextToken(q,&q,extent,token);
3108 graphic_context[n]->interline_spacing=GetDrawValue(token,
3109 &next_token);
3110 if (token == next_token)
3111 ThrowPointExpectedException(image,token);
3112 break;
3113 }
3114 if (LocaleCompare("interword-spacing",keyword) == 0)
3115 {
3116 (void) GetNextToken(q,&q,extent,token);
3117 graphic_context[n]->interword_spacing=GetDrawValue(token,
3118 &next_token);
3119 if (token == next_token)
3120 ThrowPointExpectedException(image,token);
3121 break;
3122 }
3123 status=MagickFalse;
3124 break;
3125 }
3126 case 'k':
3127 case 'K':
3128 {
3129 if (LocaleCompare("kerning",keyword) == 0)
3130 {
3131 (void) GetNextToken(q,&q,extent,token);
3132 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3133 if (token == next_token)
3134 ThrowPointExpectedException(image,token);
3135 break;
3136 }
3137 status=MagickFalse;
3138 break;
3139 }
3140 case 'l':
3141 case 'L':
3142 {
3143 if (LocaleCompare("letter-spacing",keyword) == 0)
3144 {
3145 (void) GetNextToken(q,&q,extent,token);
3146 if (IsPoint(token) == MagickFalse)
3147 break;
3148 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3149 clone_info->text=AcquireString(" ");
3150 status&=GetTypeMetrics(image,clone_info,&metrics);
3151 graphic_context[n]->kerning=metrics.width*
3152 GetDrawValue(token,&next_token);
3153 clone_info=DestroyDrawInfo(clone_info);
3154 if (token == next_token)
3155 ThrowPointExpectedException(image,token);
3156 break;
3157 }
3158 if (LocaleCompare("line",keyword) == 0)
3159 {
3160 primitive_type=LinePrimitive;
3161 break;
3162 }
3163 status=MagickFalse;
3164 break;
3165 }
3166 case 'm':
3167 case 'M':
3168 {
3169 if (LocaleCompare("mask",keyword) == 0)
3170 {
3171 const char
3172 *mask_path;
3173
3174 /*
3175 Take a node from within the MVG document, and duplicate it here.
3176 */
3177 (void) GetNextToken(q,&q,extent,token);
3178 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3179 if (mask_path != (const char *) NULL)
3180 {
3181 if (graphic_context[n]->composite_mask != (Image *) NULL)
3182 graphic_context[n]->composite_mask=
3183 DestroyImage(graphic_context[n]->composite_mask);
3184 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3185 graphic_context[n],token,mask_path,&image->exception);
3186 if (graphic_context[n]->compliance != SVGCompliance)
3187 status=SetImageMask(image,graphic_context[n]->composite_mask);
3188 }
3189 break;
3190 }
3191 if (LocaleCompare("matte",keyword) == 0)
3192 {
3193 primitive_type=MattePrimitive;
3194 break;
3195 }
3196 status=MagickFalse;
3197 break;
3198 }
3199 case 'o':
3200 case 'O':
3201 {
3202 if (LocaleCompare("offset",keyword) == 0)
3203 {
3204 (void) GetNextToken(q,&q,extent,token);
3205 break;
3206 }
3207 if (LocaleCompare("opacity",keyword) == 0)
3208 {
3209 double
3210 opacity;
3211
3212 (void) GetNextToken(q,&q,extent,token);
3213 if (graphic_context[n]->clip_path != MagickFalse)
3214 break;
3215 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3216 opacity=1.0-MagickMin(MagickMax(factor*
3217 GetDrawValue(token,&next_token),0.0),1.0);
3218 if (token == next_token)
3219 ThrowPointExpectedException(image,token);
3220 if (graphic_context[n]->compliance == SVGCompliance)
3221 {
3222 graphic_context[n]->fill_opacity*=opacity;
3223 graphic_context[n]->stroke_opacity*=opacity;
3224 }
3225 else
3226 {
3227 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3228 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3229 opacity;
3230 }
3231 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3232 {
3233 graphic_context[n]->fill.opacity=
3234 graphic_context[n]->fill_opacity;
3235 graphic_context[n]->stroke.opacity=
3236 graphic_context[n]->stroke_opacity;
3237 }
3238 else
3239 {
3240 graphic_context[n]->fill.opacity=(MagickRealType)
3241 ClampToQuantum((double) QuantumRange*opacity);
3242 graphic_context[n]->stroke.opacity=(MagickRealType)
3243 ClampToQuantum((double) QuantumRange*opacity);
3244 }
3245 break;
3246 }
3247 status=MagickFalse;
3248 break;
3249 }
3250 case 'p':
3251 case 'P':
3252 {
3253 if (LocaleCompare("path",keyword) == 0)
3254 {
3255 primitive_type=PathPrimitive;
3256 break;
3257 }
3258 if (LocaleCompare("point",keyword) == 0)
3259 {
3260 primitive_type=PointPrimitive;
3261 break;
3262 }
3263 if (LocaleCompare("polyline",keyword) == 0)
3264 {
3265 primitive_type=PolylinePrimitive;
3266 break;
3267 }
3268 if (LocaleCompare("polygon",keyword) == 0)
3269 {
3270 primitive_type=PolygonPrimitive;
3271 break;
3272 }
3273 if (LocaleCompare("pop",keyword) == 0)
3274 {
3275 if (GetNextToken(q,&q,extent,token) < 1)
3276 break;
3277 if (LocaleCompare("class",token) == 0)
3278 break;
3279 if (LocaleCompare("clip-path",token) == 0)
3280 break;
3281 if (LocaleCompare("defs",token) == 0)
3282 {
3283 defsDepth--;
3284 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3285 MagickTrue;
3286 break;
3287 }
3288 if (LocaleCompare("gradient",token) == 0)
3289 break;
3290 if (LocaleCompare("graphic-context",token) == 0)
3291 {
3292 if (n <= 0)
3293 {
3294 (void) ThrowMagickException(&image->exception,
3295 GetMagickModule(),DrawError,
3296 "UnbalancedGraphicContextPushPop","`%s'",token);
3297 status=MagickFalse;
3298 n=0;
3299 break;
3300 }
3301 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3302 (graphic_context[n]->compliance != SVGCompliance))
3303 if (LocaleCompare(graphic_context[n]->clip_mask,
3304 graphic_context[n-1]->clip_mask) != 0)
3305 status=SetImageClipMask(image,(Image *) NULL);
3306 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3307 n--;
3308 break;
3309 }
3310 if (LocaleCompare("mask",token) == 0)
3311 break;
3312 if (LocaleCompare("pattern",token) == 0)
3313 break;
3314 if (LocaleCompare("symbol",token) == 0)
3315 {
3316 symbolDepth--;
3317 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3318 MagickTrue;
3319 break;
3320 }
3321 status=MagickFalse;
3322 break;
3323 }
3324 if (LocaleCompare("push",keyword) == 0)
3325 {
3326 if (GetNextToken(q,&q,extent,token) < 1)
3327 break;
3328 if (LocaleCompare("class",token) == 0)
3329 {
3330 /*
3331 Class context.
3332 */
3333 for (p=q; *q != '\0'; )
3334 {
3335 if (GetNextToken(q,&q,extent,token) < 1)
3336 break;
3337 if (LocaleCompare(token,"pop") != 0)
3338 continue;
3339 (void) GetNextToken(q,(const char **) NULL,extent,token);
3340 if (LocaleCompare(token,"class") != 0)
3341 continue;
3342 break;
3343 }
3344 (void) GetNextToken(q,&q,extent,token);
3345 break;
3346 }
3347 if (LocaleCompare("clip-path",token) == 0)
3348 {
3349 (void) GetNextToken(q,&q,extent,token);
3350 for (p=q; *q != '\0'; )
3351 {
3352 if (GetNextToken(q,&q,extent,token) < 1)
3353 break;
3354 if (LocaleCompare(token,"pop") != 0)
3355 continue;
3356 (void) GetNextToken(q,(const char **) NULL,extent,token);
3357 if (LocaleCompare(token,"clip-path") != 0)
3358 continue;
3359 break;
3360 }
3361 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3362 {
3363 status=MagickFalse;
3364 break;
3365 }
3366 (void) GetNextToken(q,&q,extent,token);
3367 break;
3368 }
3369 if (LocaleCompare("defs",token) == 0)
3370 {
3371 defsDepth++;
3372 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3373 MagickTrue;
3374 break;
3375 }
3376 if (LocaleCompare("gradient",token) == 0)
3377 {
3378 char
3379 key[2*MaxTextExtent],
3380 name[MaxTextExtent],
3381 type[MaxTextExtent];
3382
3383 SegmentInfo
3384 segment;
3385
3386 (void) GetNextToken(q,&q,extent,token);
3387 (void) CopyMagickString(name,token,MaxTextExtent);
3388 (void) GetNextToken(q,&q,extent,token);
3389 (void) CopyMagickString(type,token,MaxTextExtent);
3390 (void) GetNextToken(q,&q,extent,token);
3391 segment.x1=GetDrawValue(token,&next_token);
3392 if (token == next_token)
3393 ThrowPointExpectedException(image,token);
3394 (void) GetNextToken(q,&q,extent,token);
3395 if (*token == ',')
3396 (void) GetNextToken(q,&q,extent,token);
3397 segment.y1=GetDrawValue(token,&next_token);
3398 if (token == next_token)
3399 ThrowPointExpectedException(image,token);
3400 (void) GetNextToken(q,&q,extent,token);
3401 if (*token == ',')
3402 (void) GetNextToken(q,&q,extent,token);
3403 segment.x2=GetDrawValue(token,&next_token);
3404 if (token == next_token)
3405 ThrowPointExpectedException(image,token);
3406 (void) GetNextToken(q,&q,extent,token);
3407 if (*token == ',')
3408 (void) GetNextToken(q,&q,extent,token);
3409 segment.y2=GetDrawValue(token,&next_token);
3410 if (token == next_token)
3411 ThrowPointExpectedException(image,token);
3412 if (LocaleCompare(type,"radial") == 0)
3413 {
3414 (void) GetNextToken(q,&q,extent,token);
3415 if (*token == ',')
3416 (void) GetNextToken(q,&q,extent,token);
3417 }
3418 for (p=q; *q != '\0'; )
3419 {
3420 if (GetNextToken(q,&q,extent,token) < 1)
3421 break;
3422 if (LocaleCompare(token,"pop") != 0)
3423 continue;
3424 (void) GetNextToken(q,(const char **) NULL,extent,token);
3425 if (LocaleCompare(token,"gradient") != 0)
3426 continue;
3427 break;
3428 }
3429 if ((q == (char *) NULL) || (*q == '\0') ||
3430 (p == (char *) NULL) || ((q-4) < p) ||
3431 ((q-p+4+1) > extent))
3432 {
3433 status=MagickFalse;
3434 break;
3435 }
3436 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3437 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3438 graphic_context[n]->affine.ry*segment.y1+
3439 graphic_context[n]->affine.tx;
3440 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3441 graphic_context[n]->affine.sy*segment.y1+
3442 graphic_context[n]->affine.ty;
3443 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3444 graphic_context[n]->affine.ry*segment.y2+
3445 graphic_context[n]->affine.tx;
3446 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3447 graphic_context[n]->affine.sy*segment.y2+
3448 graphic_context[n]->affine.ty;
3449 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3450 (void) SetImageArtifact(image,key,token);
3451 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3452 (void) SetImageArtifact(image,key,type);
3453 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3454 (void) FormatLocaleString(geometry,MaxTextExtent,
3455 "%gx%g%+.15g%+.15g",
3456 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3457 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3458 bounds.x1,bounds.y1);
3459 (void) SetImageArtifact(image,key,geometry);
3460 (void) GetNextToken(q,&q,extent,token);
3461 break;
3462 }
3463 if (LocaleCompare("graphic-context",token) == 0)
3464 {
3465 n++;
3466 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3467 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3468 if (graphic_context == (DrawInfo **) NULL)
3469 {
3470 (void) ThrowMagickException(&image->exception,
3471 GetMagickModule(),ResourceLimitError,
3472 "MemoryAllocationFailed","`%s'",image->filename);
3473 status=MagickFalse;
3474 break;
3475 }
3476 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3477 graphic_context[n-1]);
3478 if (*q == '"')
3479 {
3480 (void) GetNextToken(q,&q,extent,token);
3481 (void) CloneString(&graphic_context[n]->id,token);
3482 }
3483 if (n > MagickMaxRecursionDepth)
3484 {
3485 (void) ThrowMagickException(&image->exception,
3486 GetMagickModule(),DrawError,
3487 "VectorGraphicsNestedTooDeeply","`%s'",image->filename);
3488 status=MagickFalse;
3489 }
3490 break;
3491 }
3492 if (LocaleCompare("mask",token) == 0)
3493 {
3494 (void) GetNextToken(q,&q,extent,token);
3495 break;
3496 }
3497 if (LocaleCompare("pattern",token) == 0)
3498 {
3499 RectangleInfo
3500 bounds;
3501
3502 (void) GetNextToken(q,&q,extent,token);
3503 (void) CopyMagickString(name,token,MaxTextExtent);
3504 (void) GetNextToken(q,&q,extent,token);
3505 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3506 &next_token)-0.5));
3507 if (token == next_token)
3508 ThrowPointExpectedException(image,token);
3509 (void) GetNextToken(q,&q,extent,token);
3510 if (*token == ',')
3511 (void) GetNextToken(q,&q,extent,token);
3512 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3513 &next_token)-0.5));
3514 if (token == next_token)
3515 ThrowPointExpectedException(image,token);
3516 (void) GetNextToken(q,&q,extent,token);
3517 if (*token == ',')
3518 (void) GetNextToken(q,&q,extent,token);
3519 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3520 &next_token)+0.5);
3521 if (token == next_token)
3522 ThrowPointExpectedException(image,token);
3523 (void) GetNextToken(q,&q,extent,token);
3524 if (*token == ',')
3525 (void) GetNextToken(q,&q,extent,token);
3526 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3527 &next_token)+0.5);
3528 if (token == next_token)
3529 ThrowPointExpectedException(image,token);
3530 for (p=q; *q != '\0'; )
3531 {
3532 if (GetNextToken(q,&q,extent,token) < 1)
3533 break;
3534 if (LocaleCompare(token,"pop") != 0)
3535 continue;
3536 (void) GetNextToken(q,(const char **) NULL,extent,token);
3537 if (LocaleCompare(token,"pattern") != 0)
3538 continue;
3539 break;
3540 }
3541 if ((q == (char *) NULL) || (p == (char *) NULL) ||
3542 ((q-4) < p) || ((size_t) (q-p+4+1) > extent))
3543 {
3544 status=MagickFalse;
3545 break;
3546 }
3547 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3548 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3549 (void) SetImageArtifact(image,key,token);
3550 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3551 (void) FormatLocaleString(geometry,MaxTextExtent,
3552 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3553 bounds.height,(double) bounds.x,(double) bounds.y);
3554 (void) SetImageArtifact(image,key,geometry);
3555 (void) GetNextToken(q,&q,extent,token);
3556 break;
3557 }
3558 if (LocaleCompare("symbol",token) == 0)
3559 {
3560 symbolDepth++;
3561 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3562 MagickTrue;
3563 break;
3564 }
3565 status=MagickFalse;
3566 break;
3567 }
3568 status=MagickFalse;
3569 break;
3570 }
3571 case 'r':
3572 case 'R':
3573 {
3574 if (LocaleCompare("rectangle",keyword) == 0)
3575 {
3576 primitive_type=RectanglePrimitive;
3577 break;
3578 }
3579 if (LocaleCompare("rotate",keyword) == 0)
3580 {
3581 (void) GetNextToken(q,&q,extent,token);
3582 angle=GetDrawValue(token,&next_token);
3583 if (token == next_token)
3584 ThrowPointExpectedException(image,token);
3585 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3586 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3587 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3588 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3589 break;
3590 }
3591 if (LocaleCompare("roundRectangle",keyword) == 0)
3592 {
3593 primitive_type=RoundRectanglePrimitive;
3594 break;
3595 }
3596 status=MagickFalse;
3597 break;
3598 }
3599 case 's':
3600 case 'S':
3601 {
3602 if (LocaleCompare("scale",keyword) == 0)
3603 {
3604 (void) GetNextToken(q,&q,extent,token);
3605 affine.sx=GetDrawValue(token,&next_token);
3606 if (token == next_token)
3607 ThrowPointExpectedException(image,token);
3608 (void) GetNextToken(q,&q,extent,token);
3609 if (*token == ',')
3610 (void) GetNextToken(q,&q,extent,token);
3611 affine.sy=GetDrawValue(token,&next_token);
3612 if (token == next_token)
3613 ThrowPointExpectedException(image,token);
3614 break;
3615 }
3616 if (LocaleCompare("skewX",keyword) == 0)
3617 {
3618 (void) GetNextToken(q,&q,extent,token);
3619 angle=GetDrawValue(token,&next_token);
3620 if (token == next_token)
3621 ThrowPointExpectedException(image,token);
3622 affine.ry=sin(DegreesToRadians(angle));
3623 break;
3624 }
3625 if (LocaleCompare("skewY",keyword) == 0)
3626 {
3627 (void) GetNextToken(q,&q,extent,token);
3628 angle=GetDrawValue(token,&next_token);
3629 if (token == next_token)
3630 ThrowPointExpectedException(image,token);
3631 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3632 break;
3633 }
3634 if (LocaleCompare("stop-color",keyword) == 0)
3635 {
3636 GradientType
3637 type;
3638
3639 PixelPacket
3640 stop_color;
3641
3642 (void) GetNextToken(q,&q,extent,token);
3643 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3644 type=LinearGradient;
3645 if (draw_info->gradient.type == RadialGradient)
3646 type=RadialGradient;
3647 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3648 start_color=stop_color;
3649 (void) GetNextToken(q,&q,extent,token);
3650 break;
3651 }
3652 if (LocaleCompare("stroke",keyword) == 0)
3653 {
3654 const char
3655 *mvg_class;
3656
3657 (void) GetNextToken(q,&q,extent,token);
3658 if (graphic_context[n]->clip_path != MagickFalse)
3659 break;
3660 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3661 if (mvg_class != (const char *) NULL)
3662 {
3663 (void) DrawPatternPath(image,draw_info,mvg_class,
3664 &graphic_context[n]->stroke_pattern);
3665 break;
3666 }
3667 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3668 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3669 {
3670 (void) DrawPatternPath(image,draw_info,token,
3671 &graphic_context[n]->stroke_pattern);
3672 break;
3673 }
3674 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3675 &image->exception);
3676 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3677 graphic_context[n]->stroke.opacity=ClampToQuantum(
3678 graphic_context[n]->stroke_opacity);
3679 break;
3680 }
3681 if (LocaleCompare("stroke-antialias",keyword) == 0)
3682 {
3683 (void) GetNextToken(q,&q,extent,token);
3684 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3685 MagickTrue : MagickFalse;
3686 break;
3687 }
3688 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3689 {
3690 if (graphic_context[n]->dash_pattern != (double *) NULL)
3691 graphic_context[n]->dash_pattern=(double *)
3692 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3693 if (IsPoint(q) != MagickFalse)
3694 {
3695 const char
3696 *p;
3697
3698 p=q;
3699 (void) GetNextToken(p,&p,extent,token);
3700 if (*token == ',')
3701 (void) GetNextToken(p,&p,extent,token);
3702 for (x=0; IsPoint(token) != MagickFalse; x++)
3703 {
3704 (void) GetNextToken(p,&p,extent,token);
3705 if (*token == ',')
3706 (void) GetNextToken(p,&p,extent,token);
3707 }
3708 graphic_context[n]->dash_pattern=(double *)
3709 AcquireQuantumMemory((size_t) (2*x+2),
3710 sizeof(*graphic_context[n]->dash_pattern));
3711 if (graphic_context[n]->dash_pattern == (double *) NULL)
3712 {
3713 (void) ThrowMagickException(&image->exception,
3714 GetMagickModule(),ResourceLimitError,
3715 "MemoryAllocationFailed","`%s'",image->filename);
3716 status=MagickFalse;
3717 break;
3718 }
3719 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3720 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3721 for (j=0; j < x; j++)
3722 {
3723 (void) GetNextToken(q,&q,extent,token);
3724 if (*token == ',')
3725 (void) GetNextToken(q,&q,extent,token);
3726 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3727 &next_token);
3728 if (token == next_token)
3729 ThrowPointExpectedException(image,token);
3730 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3731 status=MagickFalse;
3732 }
3733 if ((x & 0x01) != 0)
3734 for ( ; j < (2*x); j++)
3735 graphic_context[n]->dash_pattern[j]=
3736 graphic_context[n]->dash_pattern[j-x];
3737 graphic_context[n]->dash_pattern[j]=0.0;
3738 break;
3739 }
3740 (void) GetNextToken(q,&q,extent,token);
3741 break;
3742 }
3743 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3744 {
3745 (void) GetNextToken(q,&q,extent,token);
3746 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3747 if (token == next_token)
3748 ThrowPointExpectedException(image,token);
3749 break;
3750 }
3751 if (LocaleCompare("stroke-linecap",keyword) == 0)
3752 {
3753 ssize_t
3754 linecap;
3755
3756 (void) GetNextToken(q,&q,extent,token);
3757 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3758 if (linecap == -1)
3759 {
3760 status=MagickFalse;
3761 break;
3762 }
3763 graphic_context[n]->linecap=(LineCap) linecap;
3764 break;
3765 }
3766 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3767 {
3768 ssize_t
3769 linejoin;
3770
3771 (void) GetNextToken(q,&q,extent,token);
3772 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3773 token);
3774 if (linejoin == -1)
3775 {
3776 status=MagickFalse;
3777 break;
3778 }
3779 graphic_context[n]->linejoin=(LineJoin) linejoin;
3780 break;
3781 }
3782 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3783 {
3784 (void) GetNextToken(q,&q,extent,token);
3785 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3786 break;
3787 }
3788 if (LocaleCompare("stroke-opacity",keyword) == 0)
3789 {
3790 double
3791 opacity;
3792
3793 (void) GetNextToken(q,&q,extent,token);
3794 if (graphic_context[n]->clip_path != MagickFalse)
3795 break;
3796 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3797 opacity=MagickMin(MagickMax(factor*
3798 GetDrawValue(token,&next_token),0.0),1.0);
3799 if (token == next_token)
3800 ThrowPointExpectedException(image,token);
3801 if (graphic_context[n]->compliance == SVGCompliance)
3802 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3803 else
3804 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3805 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3806 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3807 graphic_context[n]->stroke.opacity=(Quantum)
3808 graphic_context[n]->stroke_opacity;
3809 else
3810 graphic_context[n]->stroke.opacity=ClampToQuantum(
3811 (MagickRealType) QuantumRange*opacity);
3812 break;
3813 }
3814 if (LocaleCompare("stroke-width",keyword) == 0)
3815 {
3816 (void) GetNextToken(q,&q,extent,token);
3817 if (graphic_context[n]->clip_path != MagickFalse)
3818 break;
3819 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3820 if ((token == next_token) ||
3821 (graphic_context[n]->stroke_width < 0.0))
3822 ThrowPointExpectedException(image,token);
3823 break;
3824 }
3825 status=MagickFalse;
3826 break;
3827 }
3828 case 't':
3829 case 'T':
3830 {
3831 if (LocaleCompare("text",keyword) == 0)
3832 {
3833 primitive_type=TextPrimitive;
3834 cursor=0.0;
3835 break;
3836 }
3837 if (LocaleCompare("text-align",keyword) == 0)
3838 {
3839 ssize_t
3840 align;
3841
3842 (void) GetNextToken(q,&q,extent,token);
3843 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3844 if (align == -1)
3845 {
3846 status=MagickFalse;
3847 break;
3848 }
3849 graphic_context[n]->align=(AlignType) align;
3850 break;
3851 }
3852 if (LocaleCompare("text-anchor",keyword) == 0)
3853 {
3854 ssize_t
3855 align;
3856
3857 (void) GetNextToken(q,&q,extent,token);
3858 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3859 if (align == -1)
3860 {
3861 status=MagickFalse;
3862 break;
3863 }
3864 graphic_context[n]->align=(AlignType) align;
3865 break;
3866 }
3867 if (LocaleCompare("text-antialias",keyword) == 0)
3868 {
3869 (void) GetNextToken(q,&q,extent,token);
3870 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3871 MagickTrue : MagickFalse;
3872 break;
3873 }
3874 if (LocaleCompare("text-undercolor",keyword) == 0)
3875 {
3876 (void) GetNextToken(q,&q,extent,token);
3877 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3878 &image->exception);
3879 break;
3880 }
3881 if (LocaleCompare("translate",keyword) == 0)
3882 {
3883 (void) GetNextToken(q,&q,extent,token);
3884 affine.tx=GetDrawValue(token,&next_token);
3885 if (token == next_token)
3886 ThrowPointExpectedException(image,token);
3887 (void) GetNextToken(q,&q,extent,token);
3888 if (*token == ',')
3889 (void) GetNextToken(q,&q,extent,token);
3890 affine.ty=GetDrawValue(token,&next_token);
3891 if (token == next_token)
3892 ThrowPointExpectedException(image,token);
3893 break;
3894 }
3895 status=MagickFalse;
3896 break;
3897 }
3898 case 'u':
3899 case 'U':
3900 {
3901 if (LocaleCompare("use",keyword) == 0)
3902 {
3903 const char
3904 *use;
3905
3906 /*
3907 Get a macro from the MVG document, and "use" it here.
3908 */
3909 (void) GetNextToken(q,&q,extent,token);
3910 use=(const char *) GetValueFromSplayTree(macros,token);
3911 if (use != (const char *) NULL)
3912 {
3913 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3914 (void) CloneString(&clone_info->primitive,use);
3915 status=RenderMVGContent(image,clone_info,depth+1);
3916 clone_info=DestroyDrawInfo(clone_info);
3917 }
3918 break;
3919 }
3920 status=MagickFalse;
3921 break;
3922 }
3923 case 'v':
3924 case 'V':
3925 {
3926 if (LocaleCompare("viewbox",keyword) == 0)
3927 {
3928 (void) GetNextToken(q,&q,extent,token);
3929 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3930 GetDrawValue(token,&next_token)-0.5));
3931 if (token == next_token)
3932 ThrowPointExpectedException(image,token);
3933 (void) GetNextToken(q,&q,extent,token);
3934 if (*token == ',')
3935 (void) GetNextToken(q,&q,extent,token);
3936 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3937 GetDrawValue(token,&next_token)-0.5));
3938 if (token == next_token)
3939 ThrowPointExpectedException(image,token);
3940 (void) GetNextToken(q,&q,extent,token);
3941 if (*token == ',')
3942 (void) GetNextToken(q,&q,extent,token);
3943 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3944 GetDrawValue(token,&next_token)+0.5);
3945 if (token == next_token)
3946 ThrowPointExpectedException(image,token);
3947 (void) GetNextToken(q,&q,extent,token);
3948 if (*token == ',')
3949 (void) GetNextToken(q,&q,extent,token);
3950 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3951 GetDrawValue(token,&next_token)+0.5);
3952 if (token == next_token)
3953 ThrowPointExpectedException(image,token);
3954 break;
3955 }
3956 status=MagickFalse;
3957 break;
3958 }
3959 case 'w':
3960 case 'W':
3961 {
3962 if (LocaleCompare("word-spacing",keyword) == 0)
3963 {
3964 (void) GetNextToken(q,&q,extent,token);
3965 graphic_context[n]->interword_spacing=GetDrawValue(token,
3966 &next_token);
3967 if (token == next_token)
3968 ThrowPointExpectedException(image,token);
3969 break;
3970 }
3971 status=MagickFalse;
3972 break;
3973 }
3974 default:
3975 {
3976 status=MagickFalse;
3977 break;
3978 }
3979 }
3980 if (status == MagickFalse)
3981 break;
3982 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3983 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3984 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3985 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3986 {
3987 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3988 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3989 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3990 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3991 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3992 current.tx;
3993 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3994 current.ty;
3995 }
3996 if (primitive_type == UndefinedPrimitive)
3997 {
3998 if ((draw_info->debug != MagickFalse) && (q > p))
3999 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4000 (q-p-1),p);
4001 continue;
4002 }
4003 /*
4004 Parse the primitive attributes.
4005 */
4006 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4007 if (primitive_info[i].text != (char *) NULL)
4008 primitive_info[i].text=DestroyString(primitive_info[i].text);
4009 i=0;
4010 mvg_info.offset=i;
4011 j=0;
4012 primitive_info[0].primitive=primitive_type;
4013 primitive_info[0].point.x=0.0;
4014 primitive_info[0].point.y=0.0;
4015 primitive_info[0].coordinates=0;
4016 primitive_info[0].method=FloodfillMethod;
4017 primitive_info[0].closed_subpath=MagickFalse;
4018 for (x=0; *q != '\0'; x++)
4019 {
4020 /*
4021 Define points.
4022 */
4023 if (IsPoint(q) == MagickFalse)
4024 break;
4025 (void) GetNextToken(q,&q,extent,token);
4026 point.x=GetDrawValue(token,&next_token);
4027 if (token == next_token)
4028 ThrowPointExpectedException(image,token);
4029 (void) GetNextToken(q,&q,extent,token);
4030 if (*token == ',')
4031 (void) GetNextToken(q,&q,extent,token);
4032 point.y=GetDrawValue(token,&next_token);
4033 if (token == next_token)
4034 ThrowPointExpectedException(image,token);
4035 (void) GetNextToken(q,(const char **) NULL,extent,token);
4036 if (*token == ',')
4037 (void) GetNextToken(q,&q,extent,token);
4038 primitive_info[i].primitive=primitive_type;
4039 primitive_info[i].point=point;
4040 primitive_info[i].coordinates=0;
4041 primitive_info[i].method=FloodfillMethod;
4042 primitive_info[i].closed_subpath=MagickFalse;
4043 i++;
4044 mvg_info.offset=i;
4045 if (i < (ssize_t) number_points)
4046 continue;
4047 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4048 primitive_info=(*mvg_info.primitive_info);
4049 }
4050 if (status == MagickFalse)
4051 break;
4052 if (primitive_info[j].text != (char *) NULL)
4053 primitive_info[j].text=DestroyString(primitive_info[j].text);
4054 primitive_info[j].primitive=primitive_type;
4055 primitive_info[j].coordinates=(size_t) x;
4056 primitive_info[j].method=FloodfillMethod;
4057 primitive_info[j].closed_subpath=MagickFalse;
4058 /*
4059 Circumscribe primitive within a circle.
4060 */
4061 bounds.x1=primitive_info[j].point.x;
4062 bounds.y1=primitive_info[j].point.y;
4063 bounds.x2=primitive_info[j].point.x;
4064 bounds.y2=primitive_info[j].point.y;
4065 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4066 {
4067 point=primitive_info[j+k].point;
4068 if (point.x < bounds.x1)
4069 bounds.x1=point.x;
4070 if (point.y < bounds.y1)
4071 bounds.y1=point.y;
4072 if (point.x > bounds.x2)
4073 bounds.x2=point.x;
4074 if (point.y > bounds.y2)
4075 bounds.y2=point.y;
4076 }
4077 /*
4078 Speculate how many points our primitive might consume.
4079 */
4080 coordinates=(double) primitive_info[j].coordinates;
4081 switch (primitive_type)
4082 {
4083 case RectanglePrimitive:
4084 {
4085 coordinates*=5.0;
4086 break;
4087 }
4088 case RoundRectanglePrimitive:
4089 {
4090 double
4091 alpha,
4092 beta,
4093 radius;
4094
4095 alpha=bounds.x2-bounds.x1;
4096 beta=bounds.y2-bounds.y1;
4097 radius=hypot(alpha,beta);
4098 coordinates*=5.0;
4099 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4100 BezierQuantum+360.0;
4101 break;
4102 }
4103 case BezierPrimitive:
4104 {
4105 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4106 break;
4107 }
4108 case PathPrimitive:
4109 {
4110 char
4111 *s,
4112 *t;
4113
4114 (void) GetNextToken(q,&q,extent,token);
4115 coordinates=1.0;
4116 t=token;
4117 for (s=token; *s != '\0'; s=t)
4118 {
4119 double
4120 value;
4121
4122 value=GetDrawValue(s,&t);
4123 (void) value;
4124 if (s == t)
4125 {
4126 t++;
4127 continue;
4128 }
4129 coordinates++;
4130 }
4131 for (s=token; *s != '\0'; s++)
4132 if (strspn(s,"AaCcQqSsTt") != 0)
4133 coordinates+=(20.0*BezierQuantum)+360.0;
4134 break;
4135 }
4136 default:
4137 break;
4138 }
4139 if (status == MagickFalse)
4140 break;
4141 if (((size_t) (i+coordinates)) >= number_points)
4142 {
4143 /*
4144 Resize based on speculative points required by primitive.
4145 */
4146 number_points+=coordinates+1;
4147 if (number_points < (size_t) coordinates)
4148 {
4149 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4150 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4151 image->filename);
4152 status=MagickFalse;
4153 break;
4154 }
4155 mvg_info.offset=i;
4156 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4157 primitive_info=(*mvg_info.primitive_info);
4158 }
4159 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4160 primitive_info=(*mvg_info.primitive_info);
4161 if (status == MagickFalse)
4162 break;
4163 mvg_info.offset=j;
4164 switch (primitive_type)
4165 {
4166 case PointPrimitive:
4167 default:
4168 {
4169 if (primitive_info[j].coordinates != 1)
4170 {
4171 status=MagickFalse;
4172 break;
4173 }
4174 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4175 primitive_info=(*mvg_info.primitive_info);
4176 i=(ssize_t) (j+primitive_info[j].coordinates);
4177 break;
4178 }
4179 case LinePrimitive:
4180 {
4181 if (primitive_info[j].coordinates != 2)
4182 {
4183 status=MagickFalse;
4184 break;
4185 }
4186 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4187 primitive_info[j+1].point);
4188 primitive_info=(*mvg_info.primitive_info);
4189 i=(ssize_t) (j+primitive_info[j].coordinates);
4190 break;
4191 }
4192 case RectanglePrimitive:
4193 {
4194 if (primitive_info[j].coordinates != 2)
4195 {
4196 status=MagickFalse;
4197 break;
4198 }
4199 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4200 primitive_info[j+1].point);
4201 primitive_info=(*mvg_info.primitive_info);
4202 i=(ssize_t) (j+primitive_info[j].coordinates);
4203 break;
4204 }
4205 case RoundRectanglePrimitive:
4206 {
4207 if (primitive_info[j].coordinates != 3)
4208 {
4209 status=MagickFalse;
4210 break;
4211 }
4212 if ((primitive_info[j+2].point.x < 0.0) ||
4213 (primitive_info[j+2].point.y < 0.0))
4214 {
4215 status=MagickFalse;
4216 break;
4217 }
4218 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4219 {
4220 status=MagickFalse;
4221 break;
4222 }
4223 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4224 {
4225 status=MagickFalse;
4226 break;
4227 }
4228 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4229 primitive_info[j+1].point,primitive_info[j+2].point);
4230 primitive_info=(*mvg_info.primitive_info);
4231 i=(ssize_t) (j+primitive_info[j].coordinates);
4232 break;
4233 }
4234 case ArcPrimitive:
4235 {
4236 if (primitive_info[j].coordinates != 3)
4237 {
4238 status=MagickFalse;
4239 break;
4240 }
4241 status&=TraceArc(&mvg_info,primitive_info[j].point,
4242 primitive_info[j+1].point,primitive_info[j+2].point);
4243 primitive_info=(*mvg_info.primitive_info);
4244 i=(ssize_t) (j+primitive_info[j].coordinates);
4245 break;
4246 }
4247 case EllipsePrimitive:
4248 {
4249 if (primitive_info[j].coordinates != 3)
4250 {
4251 status=MagickFalse;
4252 break;
4253 }
4254 if ((primitive_info[j+1].point.x < 0.0) ||
4255 (primitive_info[j+1].point.y < 0.0))
4256 {
4257 status=MagickFalse;
4258 break;
4259 }
4260 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4261 primitive_info[j+1].point,primitive_info[j+2].point);
4262 primitive_info=(*mvg_info.primitive_info);
4263 i=(ssize_t) (j+primitive_info[j].coordinates);
4264 break;
4265 }
4266 case CirclePrimitive:
4267 {
4268 if (primitive_info[j].coordinates != 2)
4269 {
4270 status=MagickFalse;
4271 break;
4272 }
4273 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4274 primitive_info[j+1].point);
4275 primitive_info=(*mvg_info.primitive_info);
4276 i=(ssize_t) (j+primitive_info[j].coordinates);
4277 break;
4278 }
4279 case PolylinePrimitive:
4280 {
4281 if (primitive_info[j].coordinates < 1)
4282 {
4283 status=MagickFalse;
4284 break;
4285 }
4286 break;
4287 }
4288 case PolygonPrimitive:
4289 {
4290 if (primitive_info[j].coordinates < 3)
4291 {
4292 status=MagickFalse;
4293 break;
4294 }
4295 primitive_info[i]=primitive_info[j];
4296 primitive_info[i].coordinates=0;
4297 primitive_info[j].coordinates++;
4298 primitive_info[j].closed_subpath=MagickTrue;
4299 i++;
4300 break;
4301 }
4302 case BezierPrimitive:
4303 {
4304 if (primitive_info[j].coordinates < 3)
4305 {
4306 status=MagickFalse;
4307 break;
4308 }
4309 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4310 primitive_info=(*mvg_info.primitive_info);
4311 i=(ssize_t) (j+primitive_info[j].coordinates);
4312 break;
4313 }
4314 case PathPrimitive:
4315 {
4316 coordinates=(double) TracePath(image,&mvg_info,token);
4317 primitive_info=(*mvg_info.primitive_info);
4318 if (coordinates < 0.0)
4319 {
4320 status=MagickFalse;
4321 break;
4322 }
4323 i=(ssize_t) (j+coordinates);
4324 break;
4325 }
4326 case ColorPrimitive:
4327 case MattePrimitive:
4328 {
4329 ssize_t
4330 method;
4331
4332 if (primitive_info[j].coordinates != 1)
4333 {
4334 status=MagickFalse;
4335 break;
4336 }
4337 (void) GetNextToken(q,&q,extent,token);
4338 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4339 if (method == -1)
4340 {
4341 status=MagickFalse;
4342 break;
4343 }
4344 primitive_info[j].method=(PaintMethod) method;
4345 break;
4346 }
4347 case TextPrimitive:
4348 {
4349 char
4350 geometry[MagickPathExtent];
4351
4352 if (primitive_info[j].coordinates != 1)
4353 {
4354 status=MagickFalse;
4355 break;
4356 }
4357 if (*token != ',')
4358 (void) GetNextToken(q,&q,extent,token);
4359 (void) CloneString(&primitive_info[j].text,token);
4360 /*
4361 Compute text cursor offset.
4362 */
4363 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4364 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4365 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4366 {
4367 mvg_info.point=primitive_info->point;
4368 primitive_info->point.x+=cursor;
4369 }
4370 else
4371 {
4372 mvg_info.point=primitive_info->point;
4373 cursor=0.0;
4374 }
4375 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4376 primitive_info->point.x,primitive_info->point.y);
4377 clone_info->render=MagickFalse;
4378 clone_info->text=AcquireString(token);
4379 status&=GetTypeMetrics(image,clone_info,&metrics);
4380 clone_info=DestroyDrawInfo(clone_info);
4381 cursor+=metrics.width;
4382 if (graphic_context[n]->compliance != SVGCompliance)
4383 cursor=0.0;
4384 break;
4385 }
4386 case ImagePrimitive:
4387 {
4388 if (primitive_info[j].coordinates != 2)
4389 {
4390 status=MagickFalse;
4391 break;
4392 }
4393 (void) GetNextToken(q,&q,extent,token);
4394 (void) CloneString(&primitive_info[j].text,token);
4395 break;
4396 }
4397 }
4398 mvg_info.offset=i;
4399 if (status == 0)
4400 break;
4401 primitive_info[i].primitive=UndefinedPrimitive;
4402 if ((draw_info->debug != MagickFalse) && (q > p))
4403 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4404 /*
4405 Sanity check.
4406 */
4407 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4408 &graphic_context[n]->affine));
4409 primitive_info=(*mvg_info.primitive_info);
4410 if (status == 0)
4411 break;
4412 status&=CheckPrimitiveExtent(&mvg_info,(double)
4413 graphic_context[n]->stroke_width);
4414 primitive_info=(*mvg_info.primitive_info);
4415 if (status == 0)
4416 break;
4417 if (i == 0)
4418 continue;
4419 /*
4420 Transform points.
4421 */
4422 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4423 {
4424 point=primitive_info[i].point;
4425 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4426 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4427 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4428 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4429 point=primitive_info[i].point;
4430 if (point.x < graphic_context[n]->bounds.x1)
4431 graphic_context[n]->bounds.x1=point.x;
4432 if (point.y < graphic_context[n]->bounds.y1)
4433 graphic_context[n]->bounds.y1=point.y;
4434 if (point.x > graphic_context[n]->bounds.x2)
4435 graphic_context[n]->bounds.x2=point.x;
4436 if (point.y > graphic_context[n]->bounds.y2)
4437 graphic_context[n]->bounds.y2=point.y;
4438 if (primitive_info[i].primitive == ImagePrimitive)
4439 break;
4440 if (i >= (ssize_t) number_points)
4441 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4442 }
4443 if (graphic_context[n]->render != MagickFalse)
4444 {
4445 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4446 (graphic_context[n]->clip_mask != (char *) NULL) &&
4447 (LocaleCompare(graphic_context[n]->clip_mask,
4448 graphic_context[n-1]->clip_mask) != 0))
4449 {
4450 const char
4451 *clip_path;
4452
4453 clip_path=(const char *) GetValueFromSplayTree(macros,
4454 graphic_context[n]->clip_mask);
4455 if (clip_path != (const char *) NULL)
4456 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4457 clip_path);
4458 status&=DrawClipPath(image,graphic_context[n],
4459 graphic_context[n]->clip_mask);
4460 }
4461 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4462 }
4463 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4464 primitive_extent);
4465 if (proceed == MagickFalse)
4466 break;
4467 if (status == 0)
4468 break;
4469 }
4470 if (draw_info->debug != MagickFalse)
4471 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4472 /*
4473 Relinquish resources.
4474 */
4475 macros=DestroySplayTree(macros);
4476 token=DestroyString(token);
4477 if (primitive_info != (PrimitiveInfo *) NULL)
4478 {
4479 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4480 if (primitive_info[i].text != (char *) NULL)
4481 primitive_info[i].text=DestroyString(primitive_info[i].text);
4482 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4483 }
4484 primitive=DestroyString(primitive);
4485 for ( ; n >= 0; n--)
4486 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4487 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4488 if (status == MagickFalse)
4489 ThrowBinaryImageException(DrawError,
4490 "NonconformingDrawingPrimitiveDefinition",keyword);
4491 return(status != 0 ? MagickTrue : MagickFalse);
4492}
4493
4494MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4495{
4496 return(RenderMVGContent(image,draw_info,0));
4497}
4498␌
4499/*
4500%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4501% %
4502% %
4503% %
4504% D r a w P a t t e r n P a t h %
4505% %
4506% %
4507% %
4508%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4509%
4510% DrawPatternPath() draws a pattern.
4511%
4512% The format of the DrawPatternPath method is:
4513%
4514% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4515% const char *name,Image **pattern)
4516%
4517% A description of each parameter follows:
4518%
4519% o image: the image.
4520%
4521% o draw_info: the draw info.
4522%
4523% o name: the pattern name.
4524%
4525% o image: the image.
4526%
4527*/
4528MagickExport MagickBooleanType DrawPatternPath(Image *image,
4529 const DrawInfo *draw_info,const char *name,Image **pattern)
4530{
4531 char
4532 property[MaxTextExtent];
4533
4534 const char
4535 *geometry,
4536 *path,
4537 *type;
4538
4539 DrawInfo
4540 *clone_info;
4541
4542 ImageInfo
4543 *image_info;
4544
4545 MagickBooleanType
4546 status;
4547
4548 assert(image != (Image *) NULL);
4549 assert(image->signature == MagickCoreSignature);
4550 assert(draw_info != (const DrawInfo *) NULL);
4551 if (IsEventLogging() != MagickFalse)
4552 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4553 assert(name != (const char *) NULL);
4554 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4555 path=GetImageArtifact(image,property);
4556 if (path == (const char *) NULL)
4557 return(MagickFalse);
4558 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4559 geometry=GetImageArtifact(image,property);
4560 if (geometry == (const char *) NULL)
4561 return(MagickFalse);
4562 if ((*pattern) != (Image *) NULL)
4563 *pattern=DestroyImage(*pattern);
4564 image_info=AcquireImageInfo();
4565 image_info->size=AcquireString(geometry);
4566 *pattern=AcquireImage(image_info);
4567 image_info=DestroyImageInfo(image_info);
4568 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4569 &image->exception);
4570 (void) SetImageBackgroundColor(*pattern);
4571 if (draw_info->debug != MagickFalse)
4572 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4573 "begin pattern-path %s %s",name,geometry);
4574 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4575 if (clone_info->fill_pattern != (Image *) NULL)
4576 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4577 if (clone_info->stroke_pattern != (Image *) NULL)
4578 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4579 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4580 type=GetImageArtifact(image,property);
4581 if (type != (const char *) NULL)
4582 clone_info->gradient.type=(GradientType) ParseCommandOption(
4583 MagickGradientOptions,MagickFalse,type);
4584 (void) CloneString(&clone_info->primitive,path);
4585 status=RenderMVGContent(*pattern,clone_info,0);
4586 clone_info=DestroyDrawInfo(clone_info);
4587 if (draw_info->debug != MagickFalse)
4588 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4589 return(status);
4590}
4591␌
4592/*
4593%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4594% %
4595% %
4596% %
4597+ D r a w P o l y g o n P r i m i t i v e %
4598% %
4599% %
4600% %
4601%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4602%
4603% DrawPolygonPrimitive() draws a polygon on the image.
4604%
4605% The format of the DrawPolygonPrimitive method is:
4606%
4607% MagickBooleanType DrawPolygonPrimitive(Image *image,
4608% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4609%
4610% A description of each parameter follows:
4611%
4612% o image: the image.
4613%
4614% o draw_info: the draw info.
4615%
4616% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4617%
4618*/
4619
4620static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4621{
4622 ssize_t
4623 i;
4624
4625 assert(polygon_info != (PolygonInfo **) NULL);
4626 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4627 if (polygon_info[i] != (PolygonInfo *) NULL)
4628 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4629 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4630 return(polygon_info);
4631}
4632
4633static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4634 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4635{
4636 PathInfo
4637 *magick_restrict path_info;
4638
4639 PolygonInfo
4640 **polygon_info;
4641
4642 size_t
4643 number_threads;
4644
4645 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4646 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4647 sizeof(*polygon_info));
4648 if (polygon_info == (PolygonInfo **) NULL)
4649 {
4650 (void) ThrowMagickException(exception,GetMagickModule(),
4651 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4652 return((PolygonInfo **) NULL);
4653 }
4654 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4655 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4656 if (path_info == (PathInfo *) NULL)
4657 return(DestroyPolygonTLS(polygon_info));
4658 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4659 if (polygon_info[0] == (PolygonInfo *) NULL)
4660 {
4661 (void) ThrowMagickException(exception,GetMagickModule(),
4662 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4663 return(DestroyPolygonTLS(polygon_info));
4664 }
4665 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4666 return(polygon_info);
4667}
4668
4669static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4670 const size_t number_threads,ExceptionInfo *exception)
4671{
4672 ssize_t
4673 i;
4674
4675 for (i=1; i < (ssize_t) number_threads; i++)
4676 {
4677 EdgeInfo
4678 *edge_info;
4679
4680 ssize_t
4681 j;
4682
4683 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4684 sizeof(*polygon_info[i]));
4685 if (polygon_info[i] == (PolygonInfo *) NULL)
4686 {
4687 (void) ThrowMagickException(exception,GetMagickModule(),
4688 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4689 return(MagickFalse);
4690 }
4691 polygon_info[i]->number_edges=0;
4692 edge_info=polygon_info[0]->edges;
4693 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4694 polygon_info[0]->number_edges,sizeof(*edge_info));
4695 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4696 {
4697 (void) ThrowMagickException(exception,GetMagickModule(),
4698 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4699 return(MagickFalse);
4700 }
4701 (void) memcpy(polygon_info[i]->edges,edge_info,
4702 polygon_info[0]->number_edges*sizeof(*edge_info));
4703 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4704 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4705 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4706 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4707 {
4708 edge_info=polygon_info[0]->edges+j;
4709 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4710 edge_info->number_points,sizeof(*edge_info));
4711 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4712 {
4713 (void) ThrowMagickException(exception,GetMagickModule(),
4714 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4715 return(MagickFalse);
4716 }
4717 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4718 edge_info->number_points*sizeof(*edge_info->points));
4719 }
4720 }
4721 return(MagickTrue);
4722}
4723
4724static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4725{
4726 assert(edge < (ssize_t) polygon_info->number_edges);
4727 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4728 polygon_info->edges[edge].points);
4729 polygon_info->number_edges--;
4730 if (edge < (ssize_t) polygon_info->number_edges)
4731 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4732 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4733 return(polygon_info->number_edges);
4734}
4735
4736static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4737 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4738 const ssize_t y,double *stroke_opacity)
4739{
4740 double
4741 alpha,
4742 beta,
4743 distance,
4744 subpath_opacity;
4745
4746 PointInfo
4747 delta;
4748
4749 EdgeInfo
4750 *p;
4751
4752 const PointInfo
4753 *q;
4754
4755 ssize_t
4756 i;
4757
4758 ssize_t
4759 j,
4760 winding_number;
4761
4762 /*
4763 Compute fill & stroke opacity for this (x,y) point.
4764 */
4765 *stroke_opacity=0.0;
4766 subpath_opacity=0.0;
4767 p=polygon_info->edges;
4768 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4769 {
4770 if ((double) y <= (p->bounds.y1-mid-0.5))
4771 break;
4772 if ((double) y > (p->bounds.y2+mid+0.5))
4773 {
4774 p--;
4775 (void) DestroyEdge(polygon_info,j--);
4776 continue;
4777 }
4778 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4779 ((double) x > (p->bounds.x2+mid+0.5)))
4780 continue;
4781 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4782 for ( ; i < (ssize_t) p->number_points; i++)
4783 {
4784 if ((double) y <= (p->points[i-1].y-mid-0.5))
4785 break;
4786 if ((double) y > (p->points[i].y+mid+0.5))
4787 continue;
4788 if (p->scanline != (double) y)
4789 {
4790 p->scanline=(double) y;
4791 p->highwater=(size_t) i;
4792 }
4793 /*
4794 Compute distance between a point and an edge.
4795 */
4796 q=p->points+i-1;
4797 delta.x=(q+1)->x-q->x;
4798 delta.y=(q+1)->y-q->y;
4799 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4800 if (beta <= 0.0)
4801 {
4802 delta.x=(double) x-q->x;
4803 delta.y=(double) y-q->y;
4804 distance=delta.x*delta.x+delta.y*delta.y;
4805 }
4806 else
4807 {
4808 alpha=delta.x*delta.x+delta.y*delta.y;
4809 if (beta >= alpha)
4810 {
4811 delta.x=(double) x-(q+1)->x;
4812 delta.y=(double) y-(q+1)->y;
4813 distance=delta.x*delta.x+delta.y*delta.y;
4814 }
4815 else
4816 {
4817 alpha=MagickSafeReciprocal(alpha);
4818 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4819 distance=alpha*beta*beta;
4820 }
4821 }
4822 /*
4823 Compute stroke & subpath opacity.
4824 */
4825 beta=0.0;
4826 if (p->ghostline == MagickFalse)
4827 {
4828 alpha=mid+0.5;
4829 if ((*stroke_opacity < 1.0) &&
4830 (distance <= ((alpha+0.25)*(alpha+0.25))))
4831 {
4832 alpha=mid-0.5;
4833 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4834 *stroke_opacity=1.0;
4835 else
4836 {
4837 beta=1.0;
4838 if (fabs(distance-1.0) >= MagickEpsilon)
4839 beta=sqrt((double) distance);
4840 alpha=beta-mid-0.5;
4841 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4842 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4843 }
4844 }
4845 }
4846 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4847 continue;
4848 if (distance <= 0.0)
4849 {
4850 subpath_opacity=1.0;
4851 continue;
4852 }
4853 if (distance > 1.0)
4854 continue;
4855 if (fabs(beta) < MagickEpsilon)
4856 {
4857 beta=1.0;
4858 if (fabs(distance-1.0) >= MagickEpsilon)
4859 beta=sqrt(distance);
4860 }
4861 alpha=beta-1.0;
4862 if (subpath_opacity < (alpha*alpha))
4863 subpath_opacity=alpha*alpha;
4864 }
4865 }
4866 /*
4867 Compute fill opacity.
4868 */
4869 if (fill == MagickFalse)
4870 return(0.0);
4871 if (subpath_opacity >= 1.0)
4872 return(1.0);
4873 /*
4874 Determine winding number.
4875 */
4876 winding_number=0;
4877 p=polygon_info->edges;
4878 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4879 {
4880 if ((double) y <= p->bounds.y1)
4881 break;
4882 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4883 continue;
4884 if ((double) x > p->bounds.x2)
4885 {
4886 winding_number+=p->direction != 0 ? 1 : -1;
4887 continue;
4888 }
4889 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4890 for ( ; i < (ssize_t) (p->number_points-1); i++)
4891 if ((double) y <= p->points[i].y)
4892 break;
4893 q=p->points+i-1;
4894 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4895 winding_number+=p->direction != 0 ? 1 : -1;
4896 }
4897 if (fill_rule != NonZeroRule)
4898 {
4899 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4900 return(1.0);
4901 }
4902 else
4903 if (MagickAbsoluteValue(winding_number) != 0)
4904 return(1.0);
4905 return(subpath_opacity);
4906}
4907
4908static MagickBooleanType DrawPolygonPrimitive(Image *image,
4909 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4910{
4911 typedef struct _ExtentInfo
4912 {
4913 ssize_t
4914 x1,
4915 y1,
4916 x2,
4917 y2;
4918 } ExtentInfo;
4919
4920 CacheView
4921 *image_view;
4922
4923 const char
4924 *artifact;
4925
4926 double
4927 mid;
4928
4929 ExceptionInfo
4930 *exception;
4931
4932 ExtentInfo
4933 poly_extent;
4934
4935 MagickBooleanType
4936 fill,
4937 status;
4938
4939 PolygonInfo
4940 **magick_restrict polygon_info;
4941
4942 EdgeInfo
4943 *p;
4944
4945 SegmentInfo
4946 bounds;
4947
4948 size_t
4949 number_threads = 1;
4950
4951 ssize_t
4952 i,
4953 y;
4954
4955 assert(image != (Image *) NULL);
4956 assert(image->signature == MagickCoreSignature);
4957 assert(draw_info != (DrawInfo *) NULL);
4958 assert(draw_info->signature == MagickCoreSignature);
4959 assert(primitive_info != (PrimitiveInfo *) NULL);
4960 if (IsEventLogging() != MagickFalse)
4961 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4962 if (primitive_info->coordinates <= 1)
4963 return(MagickTrue);
4964 /*
4965 Compute bounding box.
4966 */
4967 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4968 if (polygon_info == (PolygonInfo **) NULL)
4969 return(MagickFalse);
4970 if (draw_info->debug != MagickFalse)
4971 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4972 fill=(primitive_info->method == FillToBorderMethod) ||
4973 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4974 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4975 bounds=polygon_info[0]->edges[0].bounds;
4976 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4977 if (IsStringTrue(artifact) != MagickFalse)
4978 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4979 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4980 {
4981 p=polygon_info[0]->edges+i;
4982 if (p->bounds.x1 < bounds.x1)
4983 bounds.x1=p->bounds.x1;
4984 if (p->bounds.y1 < bounds.y1)
4985 bounds.y1=p->bounds.y1;
4986 if (p->bounds.x2 > bounds.x2)
4987 bounds.x2=p->bounds.x2;
4988 if (p->bounds.y2 > bounds.y2)
4989 bounds.y2=p->bounds.y2;
4990 }
4991 bounds.x1-=(mid+1.0);
4992 bounds.y1-=(mid+1.0);
4993 bounds.x2+=(mid+1.0);
4994 bounds.y2+=(mid+1.0);
4995 if ((bounds.x1 >= (double) image->columns) ||
4996 (bounds.y1 >= (double) image->rows) ||
4997 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4998 {
4999 polygon_info=DestroyPolygonTLS(polygon_info);
5000 return(MagickTrue); /* virtual polygon */
5001 }
5002 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5003 (double) image->columns-1.0 : bounds.x1;
5004 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5005 (double) image->rows-1.0 : bounds.y1;
5006 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5007 (double) image->columns-1.0 : bounds.x2;
5008 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5009 (double) image->rows-1.0 : bounds.y2;
5010 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5011 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5012 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5013 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5014 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5015 poly_extent.y1+1,1);
5016 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5017 if (status == MagickFalse)
5018 {
5019 polygon_info=DestroyPolygonTLS(polygon_info);
5020 return(status);
5021 }
5022 status=MagickTrue;
5023 exception=(&image->exception);
5024 image_view=AcquireAuthenticCacheView(image,exception);
5025 if ((primitive_info->coordinates == 1) ||
5026 (polygon_info[0]->number_edges == 0))
5027 {
5028 /*
5029 Draw point.
5030 */
5031#if defined(MAGICKCORE_OPENMP_SUPPORT)
5032 #pragma omp parallel for schedule(static) shared(status) \
5033 num_threads(number_threads)
5034#endif
5035 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5036 {
5037 MagickBooleanType
5038 sync;
5039
5040 PixelPacket
5041 *magick_restrict q;
5042
5043 ssize_t
5044 x;
5045
5046 if (status == MagickFalse)
5047 continue;
5048 x=poly_extent.x1;
5049 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5050 x+1),1,exception);
5051 if (q == (PixelPacket *) NULL)
5052 {
5053 status=MagickFalse;
5054 continue;
5055 }
5056 for ( ; x <= poly_extent.x2; x++)
5057 {
5058 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5059 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5060 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5061 q++;
5062 }
5063 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5064 if (sync == MagickFalse)
5065 status=MagickFalse;
5066 }
5067 image_view=DestroyCacheView(image_view);
5068 polygon_info=DestroyPolygonTLS(polygon_info);
5069 if (draw_info->debug != MagickFalse)
5070 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5071 " end draw-polygon");
5072 return(status);
5073 }
5074 /*
5075 Draw polygon or line.
5076 */
5077 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5078 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5079#if defined(MAGICKCORE_OPENMP_SUPPORT)
5080 #pragma omp parallel for schedule(static) shared(status) \
5081 num_threads(number_threads)
5082#endif
5083 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5084 {
5085 const int
5086 id = GetOpenMPThreadId();
5087
5088 PixelPacket
5089 fill_color,
5090 stroke_color;
5091
5092 PixelPacket
5093 *magick_restrict q;
5094
5095 ssize_t
5096 x;
5097
5098 if (status == MagickFalse)
5099 continue;
5100 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5101 (poly_extent.x2-poly_extent.x1+1),1,exception);
5102 if (q == (PixelPacket *) NULL)
5103 {
5104 status=MagickFalse;
5105 continue;
5106 }
5107 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5108 {
5109 double
5110 fill_opacity,
5111 stroke_opacity;
5112
5113 /*
5114 Fill and/or stroke.
5115 */
5116 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5117 draw_info->fill_rule,x,y,&stroke_opacity);
5118 if (draw_info->stroke_antialias == MagickFalse)
5119 {
5120 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5121 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5122 }
5123 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5124 &fill_color);
5125 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5126 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5127 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5128 (MagickRealType) q->opacity,q);
5129 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5130 &stroke_color);
5131 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5132 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5133 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5134 (MagickRealType) q->opacity,q);
5135 q++;
5136 }
5137 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5138 status=MagickFalse;
5139 }
5140 image_view=DestroyCacheView(image_view);
5141 polygon_info=DestroyPolygonTLS(polygon_info);
5142 if (draw_info->debug != MagickFalse)
5143 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5144 return(status);
5145}
5146␌
5147/*
5148%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5149% %
5150% %
5151% %
5152% D r a w P r i m i t i v e %
5153% %
5154% %
5155% %
5156%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5157%
5158% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5159%
5160% The format of the DrawPrimitive method is:
5161%
5162% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5163% PrimitiveInfo *primitive_info)
5164%
5165% A description of each parameter follows:
5166%
5167% o image: the image.
5168%
5169% o draw_info: the draw info.
5170%
5171% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5172%
5173*/
5174static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5175{
5176 const char
5177 *methods[] =
5178 {
5179 "point",
5180 "replace",
5181 "floodfill",
5182 "filltoborder",
5183 "reset",
5184 "?"
5185 };
5186
5187 PointInfo
5188 p,
5189 q,
5190 point;
5191
5192 ssize_t
5193 i,
5194 x;
5195
5196 ssize_t
5197 coordinates,
5198 y;
5199
5200 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5201 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5202 switch (primitive_info->primitive)
5203 {
5204 case PointPrimitive:
5205 {
5206 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5207 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5208 methods[primitive_info->method]);
5209 return;
5210 }
5211 case ColorPrimitive:
5212 {
5213 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5214 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5215 methods[primitive_info->method]);
5216 return;
5217 }
5218 case MattePrimitive:
5219 {
5220 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5221 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5222 methods[primitive_info->method]);
5223 return;
5224 }
5225 case TextPrimitive:
5226 {
5227 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5228 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5229 return;
5230 }
5231 case ImagePrimitive:
5232 {
5233 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5234 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5235 return;
5236 }
5237 default:
5238 break;
5239 }
5240 coordinates=0;
5241 p=primitive_info[0].point;
5242 q.x=(-1.0);
5243 q.y=(-1.0);
5244 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5245 {
5246 point=primitive_info[i].point;
5247 if (coordinates <= 0)
5248 {
5249 coordinates=(ssize_t) primitive_info[i].coordinates;
5250 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5251 " begin open (%.20g)",(double) coordinates);
5252 p=point;
5253 }
5254 point=primitive_info[i].point;
5255 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5256 (fabs(q.y-point.y) >= MagickEpsilon))
5257 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5258 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5259 else
5260 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5261 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5262 q=point;
5263 coordinates--;
5264 if (coordinates > 0)
5265 continue;
5266 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5267 (fabs(p.y-point.y) >= MagickEpsilon))
5268 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5269 (double) coordinates);
5270 else
5271 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5272 (double) coordinates);
5273 }
5274}
5275
5276MagickExport MagickBooleanType DrawPrimitive(Image *image,
5277 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5278{
5279 CacheView
5280 *image_view;
5281
5282 ExceptionInfo
5283 *exception;
5284
5285 MagickStatusType
5286 status;
5287
5288 ssize_t
5289 i,
5290 x;
5291
5292 ssize_t
5293 y;
5294
5295 if (draw_info->debug != MagickFalse)
5296 {
5297 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5298 " begin draw-primitive");
5299 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5300 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5301 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5302 draw_info->affine.tx,draw_info->affine.ty);
5303 }
5304 exception=(&image->exception);
5305 status=MagickTrue;
5306 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5307 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5308 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5309 status=SetImageColorspace(image,sRGBColorspace);
5310 if (draw_info->compliance == SVGCompliance)
5311 {
5312 status&=SetImageClipMask(image,draw_info->clipping_mask);
5313 status&=SetImageMask(image,draw_info->composite_mask);
5314 }
5315 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5316 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5317 image_view=AcquireAuthenticCacheView(image,exception);
5318 switch (primitive_info->primitive)
5319 {
5320 case ColorPrimitive:
5321 {
5322 switch (primitive_info->method)
5323 {
5324 case PointMethod:
5325 default:
5326 {
5327 PixelPacket
5328 *q;
5329
5330 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5331 if (q == (PixelPacket *) NULL)
5332 break;
5333 (void) GetFillColor(draw_info,x,y,q);
5334 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5335 break;
5336 }
5337 case ReplaceMethod:
5338 {
5339 PixelPacket
5340 target;
5341
5342 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5343 for (y=0; y < (ssize_t) image->rows; y++)
5344 {
5345 PixelPacket
5346 *magick_restrict q;
5347
5348 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5349 exception);
5350 if (q == (PixelPacket *) NULL)
5351 break;
5352 for (x=0; x < (ssize_t) image->columns; x++)
5353 {
5354 if (IsColorSimilar(image,q,&target) == MagickFalse)
5355 {
5356 q++;
5357 continue;
5358 }
5359 (void) GetFillColor(draw_info,x,y,q);
5360 q++;
5361 }
5362 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5363 if (status == MagickFalse)
5364 break;
5365 }
5366 break;
5367 }
5368 case FloodfillMethod:
5369 case FillToBorderMethod:
5370 {
5371 MagickPixelPacket
5372 target;
5373
5374 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5375 if (primitive_info->method == FillToBorderMethod)
5376 {
5377 target.red=(MagickRealType) draw_info->border_color.red;
5378 target.green=(MagickRealType) draw_info->border_color.green;
5379 target.blue=(MagickRealType) draw_info->border_color.blue;
5380 }
5381 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5382 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5383 MagickTrue);
5384 break;
5385 }
5386 case ResetMethod:
5387 {
5388 for (y=0; y < (ssize_t) image->rows; y++)
5389 {
5390 PixelPacket
5391 *magick_restrict q;
5392
5393 ssize_t
5394 x;
5395
5396 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5397 exception);
5398 if (q == (PixelPacket *) NULL)
5399 break;
5400 for (x=0; x < (ssize_t) image->columns; x++)
5401 {
5402 (void) GetFillColor(draw_info,x,y,q);
5403 q++;
5404 }
5405 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5406 if (status == MagickFalse)
5407 break;
5408 }
5409 break;
5410 }
5411 }
5412 break;
5413 }
5414 case MattePrimitive:
5415 {
5416 if (image->matte == MagickFalse)
5417 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5418 switch (primitive_info->method)
5419 {
5420 case PointMethod:
5421 default:
5422 {
5423 PixelPacket
5424 pixel;
5425
5426 PixelPacket
5427 *q;
5428
5429 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5430 if (q == (PixelPacket *) NULL)
5431 break;
5432 (void) GetFillColor(draw_info,x,y,&pixel);
5433 SetPixelOpacity(q,pixel.opacity);
5434 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5435 break;
5436 }
5437 case ReplaceMethod:
5438 {
5439 PixelPacket
5440 pixel,
5441 target;
5442
5443 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5444 for (y=0; y < (ssize_t) image->rows; y++)
5445 {
5446 PixelPacket
5447 *magick_restrict q;
5448
5449 ssize_t
5450 x;
5451
5452 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5453 exception);
5454 if (q == (PixelPacket *) NULL)
5455 break;
5456 for (x=0; x < (ssize_t) image->columns; x++)
5457 {
5458 if (IsColorSimilar(image,q,&target) == MagickFalse)
5459 {
5460 q++;
5461 continue;
5462 }
5463 (void) GetFillColor(draw_info,x,y,&pixel);
5464 SetPixelOpacity(q,pixel.opacity);
5465 q++;
5466 }
5467 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5468 if (status == MagickFalse)
5469 break;
5470 }
5471 break;
5472 }
5473 case FloodfillMethod:
5474 case FillToBorderMethod:
5475 {
5476 MagickPixelPacket
5477 target;
5478
5479 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5480 if (primitive_info->method == FillToBorderMethod)
5481 {
5482 target.red=(MagickRealType) draw_info->border_color.red;
5483 target.green=(MagickRealType) draw_info->border_color.green;
5484 target.blue=(MagickRealType) draw_info->border_color.blue;
5485 }
5486 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5487 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5488 MagickTrue);
5489 break;
5490 }
5491 case ResetMethod:
5492 {
5493 PixelPacket
5494 pixel;
5495
5496 for (y=0; y < (ssize_t) image->rows; y++)
5497 {
5498 PixelPacket
5499 *magick_restrict q;
5500
5501 ssize_t
5502 x;
5503
5504 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5505 exception);
5506 if (q == (PixelPacket *) NULL)
5507 break;
5508 for (x=0; x < (ssize_t) image->columns; x++)
5509 {
5510 (void) GetFillColor(draw_info,x,y,&pixel);
5511 SetPixelOpacity(q,pixel.opacity);
5512 q++;
5513 }
5514 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5515 if (status == MagickFalse)
5516 break;
5517 }
5518 break;
5519 }
5520 }
5521 break;
5522 }
5523 case ImagePrimitive:
5524 {
5525 AffineMatrix
5526 affine;
5527
5528 char
5529 composite_geometry[MaxTextExtent];
5530
5531 Image
5532 *composite_image,
5533 *composite_images;
5534
5535 ImageInfo
5536 *clone_info;
5537
5538 RectangleInfo
5539 geometry;
5540
5541 ssize_t
5542 x1,
5543 y1;
5544
5545 if (primitive_info->text == (char *) NULL)
5546 break;
5547 clone_info=AcquireImageInfo();
5548 composite_images=(Image *) NULL;
5549 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5550 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5551 &image->exception);
5552 else
5553 if (*primitive_info->text != '\0')
5554 {
5555 /*
5556 Read composite image.
5557 */
5558 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5559 MagickPathExtent);
5560 (void) SetImageInfo(clone_info,1,exception);
5561 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5562 MagickPathExtent);
5563 if (clone_info->size != (char *) NULL)
5564 clone_info->size=DestroyString(clone_info->size);
5565 if (clone_info->extract != (char *) NULL)
5566 clone_info->extract=DestroyString(clone_info->extract);
5567 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5568 (LocaleCompare(clone_info->magick,"http") != 0) &&
5569 (LocaleCompare(clone_info->magick,"https") != 0) &&
5570 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5571 (LocaleCompare(clone_info->magick,"vid") != 0))
5572 composite_images=ReadImage(clone_info,exception);
5573 else
5574 (void) ThrowMagickException(exception,GetMagickModule(),
5575 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5576 }
5577 clone_info=DestroyImageInfo(clone_info);
5578 if (composite_images == (Image *) NULL)
5579 {
5580 status=0;
5581 break;
5582 }
5583 composite_image=RemoveFirstImageFromList(&composite_images);
5584 composite_images=DestroyImageList(composite_images);
5585 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5586 NULL,(void *) NULL);
5587 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5588 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5589 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5590 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5591 {
5592 char
5593 geometry[MaxTextExtent];
5594
5595 /*
5596 Resize image.
5597 */
5598 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5599 primitive_info[1].point.x,primitive_info[1].point.y);
5600 composite_image->filter=image->filter;
5601 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5602 }
5603 if (composite_image->matte == MagickFalse)
5604 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5605 if (draw_info->opacity != OpaqueOpacity)
5606 status&=SetImageOpacity(composite_image,draw_info->opacity);
5607 SetGeometry(image,&geometry);
5608 image->gravity=draw_info->gravity;
5609 geometry.x=x;
5610 geometry.y=y;
5611 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5612 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5613 composite_image->rows,(double) geometry.x,(double) geometry.y);
5614 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5615 &image->exception);
5616 affine=draw_info->affine;
5617 affine.tx=(double) geometry.x;
5618 affine.ty=(double) geometry.y;
5619 composite_image->interpolate=image->interpolate;
5620 if ((draw_info->compose == OverCompositeOp) ||
5621 (draw_info->compose == SrcOverCompositeOp))
5622 status&=DrawAffineImage(image,composite_image,&affine);
5623 else
5624 status&=CompositeImage(image,draw_info->compose,composite_image,
5625 geometry.x,geometry.y);
5626 composite_image=DestroyImage(composite_image);
5627 break;
5628 }
5629 case PointPrimitive:
5630 {
5631 PixelPacket
5632 fill_color;
5633
5634 PixelPacket
5635 *q;
5636
5637 if ((y < 0) || (y >= (ssize_t) image->rows))
5638 break;
5639 if ((x < 0) || (x >= (ssize_t) image->columns))
5640 break;
5641 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5642 if (q == (PixelPacket *) NULL)
5643 break;
5644 (void) GetFillColor(draw_info,x,y,&fill_color);
5645 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5646 (MagickRealType) q->opacity,q);
5647 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5648 break;
5649 }
5650 case TextPrimitive:
5651 {
5652 char
5653 geometry[MaxTextExtent];
5654
5655 DrawInfo
5656 *clone_info;
5657
5658 if (primitive_info->text == (char *) NULL)
5659 break;
5660 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5661 (void) CloneString(&clone_info->text,primitive_info->text);
5662 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5663 primitive_info->point.x,primitive_info->point.y);
5664 (void) CloneString(&clone_info->geometry,geometry);
5665 status&=AnnotateImage(image,clone_info);
5666 clone_info=DestroyDrawInfo(clone_info);
5667 break;
5668 }
5669 default:
5670 {
5671 double
5672 mid,
5673 scale;
5674
5675 DrawInfo
5676 *clone_info;
5677
5678 if (IsEventLogging() != MagickFalse)
5679 LogPrimitiveInfo(primitive_info);
5680 scale=ExpandAffine(&draw_info->affine);
5681 if ((draw_info->dash_pattern != (double *) NULL) &&
5682 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5683 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5684 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5685 {
5686 /*
5687 Draw dash polygon.
5688 */
5689 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5690 clone_info->stroke_width=0.0;
5691 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5692 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5693 clone_info=DestroyDrawInfo(clone_info);
5694 if (status != MagickFalse)
5695 status&=DrawDashPolygon(draw_info,primitive_info,image);
5696 break;
5697 }
5698 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5699 if ((mid > 1.0) &&
5700 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5701 (draw_info->stroke_pattern != (Image *) NULL)))
5702 {
5703 double
5704 x,
5705 y;
5706
5707 MagickBooleanType
5708 closed_path;
5709
5710 /*
5711 Draw strokes while respecting line cap/join attributes.
5712 */
5713 closed_path=primitive_info[0].closed_subpath;
5714 i=(ssize_t) primitive_info[0].coordinates;
5715 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5716 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5717 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5718 closed_path=MagickTrue;
5719 if ((((draw_info->linecap == RoundCap) ||
5720 (closed_path != MagickFalse)) &&
5721 (draw_info->linejoin == RoundJoin)) ||
5722 (primitive_info[i].primitive != UndefinedPrimitive))
5723 {
5724 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5725 break;
5726 }
5727 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5728 clone_info->stroke_width=0.0;
5729 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5730 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5731 clone_info=DestroyDrawInfo(clone_info);
5732 if (status != MagickFalse)
5733 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5734 break;
5735 }
5736 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5737 break;
5738 }
5739 }
5740 image_view=DestroyCacheView(image_view);
5741 if (draw_info->compliance == SVGCompliance)
5742 {
5743 status&=SetImageClipMask(image,(Image *) NULL);
5744 status&=SetImageMask(image,(Image *) NULL);
5745 }
5746 if (draw_info->debug != MagickFalse)
5747 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5748 return(status != 0 ? MagickTrue : MagickFalse);
5749}
5750␌
5751/*
5752%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5753% %
5754% %
5755% %
5756+ D r a w S t r o k e P o l y g o n %
5757% %
5758% %
5759% %
5760%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5761%
5762% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5763% the image while respecting the line cap and join attributes.
5764%
5765% The format of the DrawStrokePolygon method is:
5766%
5767% MagickBooleanType DrawStrokePolygon(Image *image,
5768% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5769%
5770% A description of each parameter follows:
5771%
5772% o image: the image.
5773%
5774% o draw_info: the draw info.
5775%
5776% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5777%
5778%
5779*/
5780
5781static MagickBooleanType DrawRoundLinecap(Image *image,
5782 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5783{
5784 PrimitiveInfo
5785 linecap[5];
5786
5787 ssize_t
5788 i;
5789
5790 if (primitive_info->coordinates < 1)
5791 return(MagickFalse);
5792 for (i=0; i < 4; i++)
5793 linecap[i]=(*primitive_info);
5794 linecap[0].coordinates=4;
5795 linecap[1].point.x+=2.0*MagickEpsilon;
5796 linecap[2].point.x+=2.0*MagickEpsilon;
5797 linecap[2].point.y+=2.0*MagickEpsilon;
5798 linecap[3].point.y+=2.0*MagickEpsilon;
5799 linecap[4].primitive=UndefinedPrimitive;
5800 return(DrawPolygonPrimitive(image,draw_info,linecap));
5801}
5802
5803static MagickBooleanType DrawStrokePolygon(Image *image,
5804 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5805{
5806 DrawInfo
5807 *clone_info;
5808
5809 MagickBooleanType
5810 closed_path;
5811
5812 MagickStatusType
5813 status;
5814
5815 PrimitiveInfo
5816 *stroke_polygon;
5817
5818 const PrimitiveInfo
5819 *p,
5820 *q;
5821
5822 /*
5823 Draw stroked polygon.
5824 */
5825 if (draw_info->debug != MagickFalse)
5826 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5827 " begin draw-stroke-polygon");
5828 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5829 clone_info->fill=draw_info->stroke;
5830 if (clone_info->fill_pattern != (Image *) NULL)
5831 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5832 if (clone_info->stroke_pattern != (Image *) NULL)
5833 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5834 MagickTrue,&clone_info->stroke_pattern->exception);
5835 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5836 clone_info->stroke_width=0.0;
5837 clone_info->fill_rule=NonZeroRule;
5838 status=MagickTrue;
5839 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5840 {
5841 if (p->coordinates == 1)
5842 continue;
5843 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5844 if (stroke_polygon == (PrimitiveInfo *) NULL)
5845 {
5846 status=0;
5847 break;
5848 }
5849 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5850 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5851 if (status == 0)
5852 break;
5853 q=p+p->coordinates-1;
5854 closed_path=p->closed_subpath;
5855 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5856 {
5857 status&=DrawRoundLinecap(image,draw_info,p);
5858 status&=DrawRoundLinecap(image,draw_info,q);
5859 }
5860 }
5861 clone_info=DestroyDrawInfo(clone_info);
5862 if (draw_info->debug != MagickFalse)
5863 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5864 " end draw-stroke-polygon");
5865 return(status != 0 ? MagickTrue : MagickFalse);
5866}
5867␌
5868/*
5869%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5870% %
5871% %
5872% %
5873% G e t A f f i n e M a t r i x %
5874% %
5875% %
5876% %
5877%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5878%
5879% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5880% matrix.
5881%
5882% The format of the GetAffineMatrix method is:
5883%
5884% void GetAffineMatrix(AffineMatrix *affine_matrix)
5885%
5886% A description of each parameter follows:
5887%
5888% o affine_matrix: the affine matrix.
5889%
5890*/
5891MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5892{
5893 assert(affine_matrix != (AffineMatrix *) NULL);
5894 if (IsEventLogging() != MagickFalse)
5895 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5896 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5897 affine_matrix->sx=1.0;
5898 affine_matrix->sy=1.0;
5899}
5900␌
5901/*
5902%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5903% %
5904% %
5905% %
5906+ G e t D r a w I n f o %
5907% %
5908% %
5909% %
5910%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5911%
5912% GetDrawInfo() initializes draw_info to default values from image_info.
5913%
5914% The format of the GetDrawInfo method is:
5915%
5916% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5917%
5918% A description of each parameter follows:
5919%
5920% o image_info: the image info..
5921%
5922% o draw_info: the draw info.
5923%
5924*/
5925MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5926{
5927 char
5928 *next_token;
5929
5930 const char
5931 *option;
5932
5933 ExceptionInfo
5934 *exception;
5935
5936 /*
5937 Initialize draw attributes.
5938 */
5939 assert(draw_info != (DrawInfo *) NULL);
5940 if (IsEventLogging() != MagickFalse)
5941 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5942 (void) memset(draw_info,0,sizeof(*draw_info));
5943 draw_info->image_info=CloneImageInfo(image_info);
5944 GetAffineMatrix(&draw_info->affine);
5945 exception=AcquireExceptionInfo();
5946 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5947 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5948 draw_info->stroke_antialias=draw_info->image_info->antialias;
5949 draw_info->stroke_width=1.0;
5950 draw_info->fill_rule=EvenOddRule;
5951 draw_info->opacity=OpaqueOpacity;
5952 draw_info->fill_opacity=OpaqueOpacity;
5953 draw_info->stroke_opacity=OpaqueOpacity;
5954 draw_info->linecap=ButtCap;
5955 draw_info->linejoin=MiterJoin;
5956 draw_info->miterlimit=10;
5957 draw_info->decorate=NoDecoration;
5958 if (draw_info->image_info->font != (char *) NULL)
5959 draw_info->font=AcquireString(draw_info->image_info->font);
5960 if (draw_info->image_info->density != (char *) NULL)
5961 draw_info->density=AcquireString(draw_info->image_info->density);
5962 draw_info->text_antialias=draw_info->image_info->antialias;
5963 draw_info->pointsize=12.0;
5964 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5965 draw_info->pointsize=draw_info->image_info->pointsize;
5966 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5967 draw_info->border_color=draw_info->image_info->border_color;
5968 draw_info->compose=OverCompositeOp;
5969 if (draw_info->image_info->server_name != (char *) NULL)
5970 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5971 draw_info->render=MagickTrue;
5972 draw_info->clip_path=MagickFalse;
5973 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5974 MagickTrue : MagickFalse;
5975 option=GetImageOption(draw_info->image_info,"direction");
5976 if (option != (const char *) NULL)
5977 draw_info->direction=(DirectionType) ParseCommandOption(
5978 MagickDirectionOptions,MagickFalse,option);
5979 else
5980 draw_info->direction=UndefinedDirection;
5981 option=GetImageOption(draw_info->image_info,"encoding");
5982 if (option != (const char *) NULL)
5983 (void) CloneString(&draw_info->encoding,option);
5984 option=GetImageOption(draw_info->image_info,"family");
5985 if (option != (const char *) NULL)
5986 (void) CloneString(&draw_info->family,option);
5987 option=GetImageOption(draw_info->image_info,"fill");
5988 if (option != (const char *) NULL)
5989 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5990 option=GetImageOption(draw_info->image_info,"gravity");
5991 if (option != (const char *) NULL)
5992 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5993 MagickFalse,option);
5994 option=GetImageOption(draw_info->image_info,"interline-spacing");
5995 if (option != (const char *) NULL)
5996 draw_info->interline_spacing=GetDrawValue(option,&next_token);
5997 option=GetImageOption(draw_info->image_info,"interword-spacing");
5998 if (option != (const char *) NULL)
5999 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6000 option=GetImageOption(draw_info->image_info,"kerning");
6001 if (option != (const char *) NULL)
6002 draw_info->kerning=GetDrawValue(option,&next_token);
6003 option=GetImageOption(draw_info->image_info,"stroke");
6004 if (option != (const char *) NULL)
6005 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6006 option=GetImageOption(draw_info->image_info,"strokewidth");
6007 if (option != (const char *) NULL)
6008 draw_info->stroke_width=GetDrawValue(option,&next_token);
6009 option=GetImageOption(draw_info->image_info,"style");
6010 if (option != (const char *) NULL)
6011 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6012 MagickFalse,option);
6013 option=GetImageOption(draw_info->image_info,"undercolor");
6014 if (option != (const char *) NULL)
6015 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6016 option=GetImageOption(draw_info->image_info,"weight");
6017 if (option != (const char *) NULL)
6018 {
6019 ssize_t
6020 weight;
6021
6022 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6023 if (weight == -1)
6024 weight=(ssize_t) StringToUnsignedLong(option);
6025 draw_info->weight=(size_t) weight;
6026 }
6027 exception=DestroyExceptionInfo(exception);
6028 draw_info->signature=MagickCoreSignature;
6029}
6030␌
6031/*
6032%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6033% %
6034% %
6035% %
6036+ P e r m u t a t e %
6037% %
6038% %
6039% %
6040%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6041%
6042% Permutate() returns the permutation of the (n,k).
6043%
6044% The format of the Permutate method is:
6045%
6046% void Permutate(ssize_t n,ssize_t k)
6047%
6048% A description of each parameter follows:
6049%
6050% o n:
6051%
6052% o k:
6053%
6054%
6055*/
6056static inline double Permutate(const ssize_t n,const ssize_t k)
6057{
6058 double
6059 r;
6060
6061 ssize_t
6062 i;
6063
6064 r=1.0;
6065 for (i=k+1; i <= n; i++)
6066 r*=i;
6067 for (i=1; i <= (n-k); i++)
6068 r/=i;
6069 return(r);
6070}
6071␌
6072/*
6073%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6074% %
6075% %
6076% %
6077+ T r a c e P r i m i t i v e %
6078% %
6079% %
6080% %
6081%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6082%
6083% TracePrimitive is a collection of methods for generating graphic
6084% primitives such as arcs, ellipses, paths, etc.
6085%
6086*/
6087
6088static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6089 const PointInfo end,const PointInfo degrees)
6090{
6091 PointInfo
6092 center,
6093 radius;
6094
6095 center.x=0.5*(end.x+start.x);
6096 center.y=0.5*(end.y+start.y);
6097 radius.x=fabs(center.x-start.x);
6098 radius.y=fabs(center.y-start.y);
6099 return(TraceEllipse(mvg_info,center,radius,degrees));
6100}
6101
6102static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6103 const PointInfo end,const PointInfo arc,const double angle,
6104 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6105{
6106 double
6107 alpha,
6108 beta,
6109 delta,
6110 factor,
6111 gamma,
6112 theta;
6113
6114 MagickStatusType
6115 status;
6116
6117 PointInfo
6118 center,
6119 points[3],
6120 radii;
6121
6122 double
6123 cosine,
6124 sine;
6125
6126 PrimitiveInfo
6127 *primitive_info;
6128
6129 PrimitiveInfo
6130 *p;
6131
6132 ssize_t
6133 i;
6134
6135 size_t
6136 arc_segments;
6137
6138 ssize_t
6139 offset;
6140
6141 offset=mvg_info->offset;
6142 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6143 primitive_info->coordinates=0;
6144 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6145 (fabs(start.y-end.y) < MagickEpsilon))
6146 return(TracePoint(primitive_info,end));
6147 radii.x=fabs(arc.x);
6148 radii.y=fabs(arc.y);
6149 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6150 return(TraceLine(primitive_info,start,end));
6151 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6152 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6153 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6154 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6155 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6156 (radii.y*radii.y);
6157 if (delta < MagickEpsilon)
6158 return(TraceLine(primitive_info,start,end));
6159 if (delta > 1.0)
6160 {
6161 radii.x*=sqrt((double) delta);
6162 radii.y*=sqrt((double) delta);
6163 }
6164 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6165 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6166 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6167 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6168 alpha=points[1].x-points[0].x;
6169 beta=points[1].y-points[0].y;
6170 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6171 return(TraceLine(primitive_info,start,end));
6172 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6173 if (factor <= 0.0)
6174 factor=0.0;
6175 else
6176 {
6177 factor=sqrt((double) factor);
6178 if (sweep == large_arc)
6179 factor=(-factor);
6180 }
6181 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6182 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6183 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6184 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6185 if ((theta < 0.0) && (sweep != MagickFalse))
6186 theta+=2.0*MagickPI;
6187 else
6188 if ((theta > 0.0) && (sweep == MagickFalse))
6189 theta-=2.0*MagickPI;
6190 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6191 MagickPI+MagickEpsilon)))));
6192 p=primitive_info;
6193 status=MagickTrue;
6194 for (i=0; i < (ssize_t) arc_segments; i++)
6195 {
6196 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6197 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6198 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6199 sin(fmod((double) beta,DegreesToRadians(360.0)));
6200 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6201 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6202 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6203 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6204 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6205 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6206 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6207 theta/arc_segments),DegreesToRadians(360.0))));
6208 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6209 theta/arc_segments),DegreesToRadians(360.0))));
6210 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6211 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6212 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6213 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6214 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6215 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6216 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6217 points[0].y);
6218 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6219 points[0].y);
6220 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6221 points[1].y);
6222 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6223 points[1].y);
6224 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6225 points[2].y);
6226 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6227 points[2].y);
6228 if (i == (ssize_t) (arc_segments-1))
6229 (p+3)->point=end;
6230 status&=TraceBezier(mvg_info,4);
6231 if (status == 0)
6232 break;
6233 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6234 mvg_info->offset+=p->coordinates;
6235 p+=(ptrdiff_t) p->coordinates;
6236 }
6237 if (status == 0)
6238 return(MagickFalse);
6239 mvg_info->offset=offset;
6240 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6241 primitive_info->coordinates=(size_t) (p-primitive_info);
6242 primitive_info->closed_subpath=MagickFalse;
6243 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6244 {
6245 p->primitive=primitive_info->primitive;
6246 p--;
6247 }
6248 return(MagickTrue);
6249}
6250
6251static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6252 const size_t number_coordinates)
6253{
6254 double
6255 alpha,
6256 *coefficients,
6257 weight;
6258
6259 PointInfo
6260 end,
6261 point,
6262 *points;
6263
6264 PrimitiveInfo
6265 *primitive_info;
6266
6267 PrimitiveInfo
6268 *p;
6269
6270 ssize_t
6271 i,
6272 j;
6273
6274 size_t
6275 control_points,
6276 quantum;
6277
6278 /*
6279 Allocate coefficients.
6280 */
6281 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6282 quantum=number_coordinates;
6283 for (i=0; i < (ssize_t) number_coordinates; i++)
6284 {
6285 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6286 {
6287 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6288 if (alpha > (double) GetMaxMemoryRequest())
6289 {
6290 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6291 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6292 return(MagickFalse);
6293 }
6294 if (alpha > (double) quantum)
6295 quantum=(size_t) alpha;
6296 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6297 if (alpha > (double) quantum)
6298 quantum=(size_t) alpha;
6299 }
6300 }
6301 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6302 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6303 if (quantum > (double) GetMaxMemoryRequest())
6304 {
6305 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6306 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6307 return(MagickFalse);
6308 }
6309 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6310 sizeof(*coefficients));
6311 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6312 sizeof(*points));
6313 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6314 {
6315 if (points != (PointInfo *) NULL)
6316 points=(PointInfo *) RelinquishMagickMemory(points);
6317 if (coefficients != (double *) NULL)
6318 coefficients=(double *) RelinquishMagickMemory(coefficients);
6319 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6320 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6321 return(MagickFalse);
6322 }
6323 control_points=quantum*number_coordinates;
6324 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6325 {
6326 points=(PointInfo *) RelinquishMagickMemory(points);
6327 coefficients=(double *) RelinquishMagickMemory(coefficients);
6328 return(MagickFalse);
6329 }
6330 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6331 /*
6332 Compute bezier points.
6333 */
6334 end=primitive_info[number_coordinates-1].point;
6335 for (i=0; i < (ssize_t) number_coordinates; i++)
6336 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6337 weight=0.0;
6338 for (i=0; i < (ssize_t) control_points; i++)
6339 {
6340 p=primitive_info;
6341 point.x=0.0;
6342 point.y=0.0;
6343 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6344 for (j=0; j < (ssize_t) number_coordinates; j++)
6345 {
6346 point.x+=alpha*coefficients[j]*p->point.x;
6347 point.y+=alpha*coefficients[j]*p->point.y;
6348 alpha*=weight/(1.0-weight);
6349 p++;
6350 }
6351 points[i]=point;
6352 weight+=1.0/control_points;
6353 }
6354 /*
6355 Bezier curves are just short segmented polys.
6356 */
6357 p=primitive_info;
6358 for (i=0; i < (ssize_t) control_points; i++)
6359 {
6360 if (TracePoint(p,points[i]) == MagickFalse)
6361 {
6362 points=(PointInfo *) RelinquishMagickMemory(points);
6363 coefficients=(double *) RelinquishMagickMemory(coefficients);
6364 return(MagickFalse);
6365 }
6366 p+=(ptrdiff_t) p->coordinates;
6367 }
6368 if (TracePoint(p,end) == MagickFalse)
6369 {
6370 points=(PointInfo *) RelinquishMagickMemory(points);
6371 coefficients=(double *) RelinquishMagickMemory(coefficients);
6372 return(MagickFalse);
6373 }
6374 p+=(ptrdiff_t) p->coordinates;
6375 primitive_info->coordinates=(size_t) (p-primitive_info);
6376 primitive_info->closed_subpath=MagickFalse;
6377 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6378 {
6379 p->primitive=primitive_info->primitive;
6380 p--;
6381 }
6382 points=(PointInfo *) RelinquishMagickMemory(points);
6383 coefficients=(double *) RelinquishMagickMemory(coefficients);
6384 return(MagickTrue);
6385}
6386
6387static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6388 const PointInfo end)
6389{
6390 double
6391 alpha,
6392 beta,
6393 radius;
6394
6395 PointInfo
6396 offset,
6397 degrees;
6398
6399 alpha=end.x-start.x;
6400 beta=end.y-start.y;
6401 radius=hypot((double) alpha,(double) beta);
6402 offset.x=(double) radius;
6403 offset.y=(double) radius;
6404 degrees.x=0.0;
6405 degrees.y=360.0;
6406 return(TraceEllipse(mvg_info,start,offset,degrees));
6407}
6408
6409static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6410 const PointInfo radii,const PointInfo arc)
6411{
6412 double
6413 coordinates,
6414 delta,
6415 step,
6416 x,
6417 y;
6418
6419 PointInfo
6420 angle,
6421 point;
6422
6423 PrimitiveInfo
6424 *primitive_info;
6425
6426 PrimitiveInfo
6427 *p;
6428
6429 ssize_t
6430 i;
6431
6432 /*
6433 Ellipses are just short segmented polys.
6434 */
6435 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6436 primitive_info->coordinates=0;
6437 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6438 return(MagickTrue);
6439 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6440 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6441 angle.x=DegreesToRadians(arc.x);
6442 y=arc.y;
6443 while (y < arc.x)
6444 y+=360.0;
6445 angle.y=DegreesToRadians(y);
6446 coordinates=ceil((angle.y-angle.x)/step+1.0);
6447 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6448 return(MagickFalse);
6449 i=0;
6450 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6451 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6452 {
6453 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6454 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6455 if (i++ >= (ssize_t) coordinates)
6456 break;
6457 if (TracePoint(p,point) == MagickFalse)
6458 return(MagickFalse);
6459 p+=(ptrdiff_t) p->coordinates;
6460 }
6461 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6462 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6463 if (TracePoint(p,point) == MagickFalse)
6464 return(MagickFalse);
6465 p+=(ptrdiff_t) p->coordinates;
6466 primitive_info->coordinates=(size_t) (p-primitive_info);
6467 primitive_info->closed_subpath=MagickFalse;
6468 x=fabs(primitive_info[0].point.x-
6469 primitive_info[primitive_info->coordinates-1].point.x);
6470 y=fabs(primitive_info[0].point.y-
6471 primitive_info[primitive_info->coordinates-1].point.y);
6472 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6473 primitive_info->closed_subpath=MagickTrue;
6474 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6475 {
6476 p->primitive=primitive_info->primitive;
6477 p--;
6478 }
6479 return(MagickTrue);
6480}
6481
6482static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6483 const PointInfo start,const PointInfo end)
6484{
6485 if (TracePoint(primitive_info,start) == MagickFalse)
6486 return(MagickFalse);
6487 if (TracePoint(primitive_info+1,end) == MagickFalse)
6488 return(MagickFalse);
6489 (primitive_info+1)->primitive=primitive_info->primitive;
6490 primitive_info->coordinates=2;
6491 primitive_info->closed_subpath=MagickFalse;
6492 return(MagickTrue);
6493}
6494
6495static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6496{
6497 char
6498 *next_token,
6499 token[MaxTextExtent] = "";
6500
6501 const char
6502 *p;
6503
6504 double
6505 x,
6506 y;
6507
6508 int
6509 attribute,
6510 last_attribute;
6511
6512 MagickStatusType
6513 status;
6514
6515 PointInfo
6516 end = {0.0, 0.0},
6517 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6518 point = {0.0, 0.0},
6519 start = {0.0, 0.0};
6520
6521 PrimitiveInfo
6522 *primitive_info;
6523
6524 PrimitiveType
6525 primitive_type;
6526
6527 PrimitiveInfo
6528 *q;
6529
6530 ssize_t
6531 i;
6532
6533 size_t
6534 number_coordinates,
6535 z_count;
6536
6537 ssize_t
6538 subpath_offset;
6539
6540 subpath_offset=mvg_info->offset;
6541 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6542 status=MagickTrue;
6543 attribute=0;
6544 number_coordinates=0;
6545 z_count=0;
6546 *token='\0';
6547 primitive_type=primitive_info->primitive;
6548 q=primitive_info;
6549 for (p=path; *p != '\0'; )
6550 {
6551 if (status == MagickFalse)
6552 break;
6553 while (isspace((int) ((unsigned char) *p)) != 0)
6554 p++;
6555 if (*p == '\0')
6556 break;
6557 last_attribute=attribute;
6558 attribute=(int) (*p++);
6559 switch (attribute)
6560 {
6561 case 'a':
6562 case 'A':
6563 {
6564 double
6565 angle = 0.0;
6566
6567 MagickBooleanType
6568 large_arc = MagickFalse,
6569 sweep = MagickFalse;
6570
6571 PointInfo
6572 arc = {0.0, 0.0};
6573
6574 /*
6575 Elliptical arc.
6576 */
6577 do
6578 {
6579 (void) GetNextToken(p,&p,MaxTextExtent,token);
6580 if (*token == ',')
6581 (void) GetNextToken(p,&p,MaxTextExtent,token);
6582 arc.x=GetDrawValue(token,&next_token);
6583 if (token == next_token)
6584 ThrowPointExpectedException(image,token);
6585 (void) GetNextToken(p,&p,MaxTextExtent,token);
6586 if (*token == ',')
6587 (void) GetNextToken(p,&p,MaxTextExtent,token);
6588 arc.y=GetDrawValue(token,&next_token);
6589 if (token == next_token)
6590 ThrowPointExpectedException(image,token);
6591 (void) GetNextToken(p,&p,MaxTextExtent,token);
6592 if (*token == ',')
6593 (void) GetNextToken(p,&p,MaxTextExtent,token);
6594 angle=GetDrawValue(token,&next_token);
6595 if (token == next_token)
6596 ThrowPointExpectedException(image,token);
6597 (void) GetNextToken(p,&p,MaxTextExtent,token);
6598 if (*token == ',')
6599 (void) GetNextToken(p,&p,MaxTextExtent,token);
6600 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6601 (void) GetNextToken(p,&p,MaxTextExtent,token);
6602 if (*token == ',')
6603 (void) GetNextToken(p,&p,MaxTextExtent,token);
6604 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6605 if (*token == ',')
6606 (void) GetNextToken(p,&p,MaxTextExtent,token);
6607 (void) GetNextToken(p,&p,MaxTextExtent,token);
6608 if (*token == ',')
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 x=GetDrawValue(token,&next_token);
6611 if (token == next_token)
6612 ThrowPointExpectedException(image,token);
6613 (void) GetNextToken(p,&p,MaxTextExtent,token);
6614 if (*token == ',')
6615 (void) GetNextToken(p,&p,MaxTextExtent,token);
6616 y=GetDrawValue(token,&next_token);
6617 if (token == next_token)
6618 ThrowPointExpectedException(image,token);
6619 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6620 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6621 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6622 q=(*mvg_info->primitive_info)+mvg_info->offset;
6623 mvg_info->offset+=q->coordinates;
6624 q+=(ptrdiff_t) q->coordinates;
6625 point=end;
6626 while (isspace((int) ((unsigned char) *p)) != 0)
6627 p++;
6628 if (*p == ',')
6629 p++;
6630 } while (IsPoint(p) != MagickFalse);
6631 break;
6632 }
6633 case 'c':
6634 case 'C':
6635 {
6636 /*
6637 Cubic Bézier curve.
6638 */
6639 do
6640 {
6641 points[0]=point;
6642 for (i=1; i < 4; i++)
6643 {
6644 (void) GetNextToken(p,&p,MaxTextExtent,token);
6645 if (*token == ',')
6646 (void) GetNextToken(p,&p,MaxTextExtent,token);
6647 x=GetDrawValue(token,&next_token);
6648 if (token == next_token)
6649 ThrowPointExpectedException(image,token);
6650 (void) GetNextToken(p,&p,MaxTextExtent,token);
6651 if (*token == ',')
6652 (void) GetNextToken(p,&p,MaxTextExtent,token);
6653 y=GetDrawValue(token,&next_token);
6654 if (token == next_token)
6655 ThrowPointExpectedException(image,token);
6656 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6657 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6658 points[i]=end;
6659 }
6660 for (i=0; i < 4; i++)
6661 (q+i)->point=points[i];
6662 if (TraceBezier(mvg_info,4) == MagickFalse)
6663 return(-1);
6664 q=(*mvg_info->primitive_info)+mvg_info->offset;
6665 mvg_info->offset+=q->coordinates;
6666 q+=(ptrdiff_t) q->coordinates;
6667 point=end;
6668 while (isspace((int) ((unsigned char) *p)) != 0)
6669 p++;
6670 if (*p == ',')
6671 p++;
6672 } while (IsPoint(p) != MagickFalse);
6673 break;
6674 }
6675 case 'H':
6676 case 'h':
6677 {
6678 do
6679 {
6680 (void) GetNextToken(p,&p,MaxTextExtent,token);
6681 if (*token == ',')
6682 (void) GetNextToken(p,&p,MaxTextExtent,token);
6683 x=GetDrawValue(token,&next_token);
6684 if (token == next_token)
6685 ThrowPointExpectedException(image,token);
6686 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6687 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6688 return(-1);
6689 q=(*mvg_info->primitive_info)+mvg_info->offset;
6690 if (TracePoint(q,point) == MagickFalse)
6691 return(-1);
6692 mvg_info->offset+=q->coordinates;
6693 q+=(ptrdiff_t) q->coordinates;
6694 while (isspace((int) ((unsigned char) *p)) != 0)
6695 p++;
6696 if (*p == ',')
6697 p++;
6698 } while (IsPoint(p) != MagickFalse);
6699 break;
6700 }
6701 case 'l':
6702 case 'L':
6703 {
6704 /*
6705 Line to.
6706 */
6707 do
6708 {
6709 (void) GetNextToken(p,&p,MaxTextExtent,token);
6710 if (*token == ',')
6711 (void) GetNextToken(p,&p,MaxTextExtent,token);
6712 x=GetDrawValue(token,&next_token);
6713 if (token == next_token)
6714 ThrowPointExpectedException(image,token);
6715 (void) GetNextToken(p,&p,MaxTextExtent,token);
6716 if (*token == ',')
6717 (void) GetNextToken(p,&p,MaxTextExtent,token);
6718 y=GetDrawValue(token,&next_token);
6719 if (token == next_token)
6720 ThrowPointExpectedException(image,token);
6721 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6722 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6723 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6724 return(-1);
6725 q=(*mvg_info->primitive_info)+mvg_info->offset;
6726 if (TracePoint(q,point) == MagickFalse)
6727 return(-1);
6728 mvg_info->offset+=q->coordinates;
6729 q+=(ptrdiff_t) q->coordinates;
6730 while (isspace((int) ((unsigned char) *p)) != 0)
6731 p++;
6732 if (*p == ',')
6733 p++;
6734 } while (IsPoint(p) != MagickFalse);
6735 break;
6736 }
6737 case 'M':
6738 case 'm':
6739 {
6740 /*
6741 Move to.
6742 */
6743 if (mvg_info->offset != subpath_offset)
6744 {
6745 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6746 primitive_info->coordinates=(size_t) (q-primitive_info);
6747 number_coordinates+=primitive_info->coordinates;
6748 primitive_info=q;
6749 subpath_offset=mvg_info->offset;
6750 }
6751 i=0;
6752 do
6753 {
6754 (void) GetNextToken(p,&p,MaxTextExtent,token);
6755 if (*token == ',')
6756 (void) GetNextToken(p,&p,MaxTextExtent,token);
6757 x=GetDrawValue(token,&next_token);
6758 if (token == next_token)
6759 ThrowPointExpectedException(image,token);
6760 (void) GetNextToken(p,&p,MaxTextExtent,token);
6761 if (*token == ',')
6762 (void) GetNextToken(p,&p,MaxTextExtent,token);
6763 y=GetDrawValue(token,&next_token);
6764 if (token == next_token)
6765 ThrowPointExpectedException(image,token);
6766 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6767 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6768 if (i == 0)
6769 start=point;
6770 i++;
6771 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6772 return(-1);
6773 q=(*mvg_info->primitive_info)+mvg_info->offset;
6774 if (TracePoint(q,point) == MagickFalse)
6775 return(-1);
6776 mvg_info->offset+=q->coordinates;
6777 q+=(ptrdiff_t) q->coordinates;
6778 while (isspace((int) ((unsigned char) *p)) != 0)
6779 p++;
6780 if (*p == ',')
6781 p++;
6782 } while (IsPoint(p) != MagickFalse);
6783 break;
6784 }
6785 case 'q':
6786 case 'Q':
6787 {
6788 /*
6789 Quadratic Bézier curve.
6790 */
6791 do
6792 {
6793 points[0]=point;
6794 for (i=1; i < 3; i++)
6795 {
6796 (void) GetNextToken(p,&p,MaxTextExtent,token);
6797 if (*token == ',')
6798 (void) GetNextToken(p,&p,MaxTextExtent,token);
6799 x=GetDrawValue(token,&next_token);
6800 if (token == next_token)
6801 ThrowPointExpectedException(image,token);
6802 (void) GetNextToken(p,&p,MaxTextExtent,token);
6803 if (*token == ',')
6804 (void) GetNextToken(p,&p,MaxTextExtent,token);
6805 y=GetDrawValue(token,&next_token);
6806 if (token == next_token)
6807 ThrowPointExpectedException(image,token);
6808 if (*p == ',')
6809 p++;
6810 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6811 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6812 points[i]=end;
6813 }
6814 for (i=0; i < 3; i++)
6815 (q+i)->point=points[i];
6816 if (TraceBezier(mvg_info,3) == MagickFalse)
6817 return(-1);
6818 q=(*mvg_info->primitive_info)+mvg_info->offset;
6819 mvg_info->offset+=q->coordinates;
6820 q+=(ptrdiff_t) q->coordinates;
6821 point=end;
6822 while (isspace((int) ((unsigned char) *p)) != 0)
6823 p++;
6824 if (*p == ',')
6825 p++;
6826 } while (IsPoint(p) != MagickFalse);
6827 break;
6828 }
6829 case 's':
6830 case 'S':
6831 {
6832 /*
6833 Cubic Bézier curve.
6834 */
6835 do
6836 {
6837 points[0]=points[3];
6838 points[1].x=2.0*points[3].x-points[2].x;
6839 points[1].y=2.0*points[3].y-points[2].y;
6840 for (i=2; i < 4; i++)
6841 {
6842 (void) GetNextToken(p,&p,MaxTextExtent,token);
6843 if (*token == ',')
6844 (void) GetNextToken(p,&p,MaxTextExtent,token);
6845 x=GetDrawValue(token,&next_token);
6846 if (token == next_token)
6847 ThrowPointExpectedException(image,token);
6848 (void) GetNextToken(p,&p,MaxTextExtent,token);
6849 if (*token == ',')
6850 (void) GetNextToken(p,&p,MaxTextExtent,token);
6851 y=GetDrawValue(token,&next_token);
6852 if (token == next_token)
6853 ThrowPointExpectedException(image,token);
6854 if (*p == ',')
6855 p++;
6856 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6857 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6858 points[i]=end;
6859 }
6860 if (strchr("CcSs",last_attribute) == (char *) NULL)
6861 {
6862 points[0]=point;
6863 points[1]=point;
6864 }
6865 for (i=0; i < 4; i++)
6866 (q+i)->point=points[i];
6867 if (TraceBezier(mvg_info,4) == MagickFalse)
6868 return(-1);
6869 q=(*mvg_info->primitive_info)+mvg_info->offset;
6870 mvg_info->offset+=q->coordinates;
6871 q+=(ptrdiff_t) q->coordinates;
6872 point=end;
6873 last_attribute=attribute;
6874 while (isspace((int) ((unsigned char) *p)) != 0)
6875 p++;
6876 if (*p == ',')
6877 p++;
6878 } while (IsPoint(p) != MagickFalse);
6879 break;
6880 }
6881 case 't':
6882 case 'T':
6883 {
6884 /*
6885 Quadratic Bézier curve.
6886 */
6887 do
6888 {
6889 points[0]=points[2];
6890 points[1].x=2.0*points[2].x-points[1].x;
6891 points[1].y=2.0*points[2].y-points[1].y;
6892 for (i=2; i < 3; i++)
6893 {
6894 (void) GetNextToken(p,&p,MaxTextExtent,token);
6895 if (*token == ',')
6896 (void) GetNextToken(p,&p,MaxTextExtent,token);
6897 x=GetDrawValue(token,&next_token);
6898 if (token == next_token)
6899 ThrowPointExpectedException(image,token);
6900 (void) GetNextToken(p,&p,MaxTextExtent,token);
6901 if (*token == ',')
6902 (void) GetNextToken(p,&p,MaxTextExtent,token);
6903 y=GetDrawValue(token,&next_token);
6904 if (token == next_token)
6905 ThrowPointExpectedException(image,token);
6906 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6907 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6908 points[i]=end;
6909 }
6910 if (status == MagickFalse)
6911 break;
6912 if (strchr("QqTt",last_attribute) == (char *) NULL)
6913 {
6914 points[0]=point;
6915 points[1]=point;
6916 }
6917 for (i=0; i < 3; i++)
6918 (q+i)->point=points[i];
6919 if (TraceBezier(mvg_info,3) == MagickFalse)
6920 return(-1);
6921 q=(*mvg_info->primitive_info)+mvg_info->offset;
6922 mvg_info->offset+=q->coordinates;
6923 q+=(ptrdiff_t) q->coordinates;
6924 point=end;
6925 last_attribute=attribute;
6926 while (isspace((int) ((unsigned char) *p)) != 0)
6927 p++;
6928 if (*p == ',')
6929 p++;
6930 } while (IsPoint(p) != MagickFalse);
6931 break;
6932 }
6933 case 'v':
6934 case 'V':
6935 {
6936 /*
6937 Line to.
6938 */
6939 do
6940 {
6941 (void) GetNextToken(p,&p,MaxTextExtent,token);
6942 if (*token == ',')
6943 (void) GetNextToken(p,&p,MaxTextExtent,token);
6944 y=GetDrawValue(token,&next_token);
6945 if (token == next_token)
6946 ThrowPointExpectedException(image,token);
6947 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6948 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6949 return(-1);
6950 q=(*mvg_info->primitive_info)+mvg_info->offset;
6951 if (TracePoint(q,point) == MagickFalse)
6952 return(-1);
6953 mvg_info->offset+=q->coordinates;
6954 q+=(ptrdiff_t) q->coordinates;
6955 while (isspace((int) ((unsigned char) *p)) != 0)
6956 p++;
6957 if (*p == ',')
6958 p++;
6959 } while (IsPoint(p) != MagickFalse);
6960 break;
6961 }
6962 case 'z':
6963 case 'Z':
6964 {
6965 /*
6966 Close path.
6967 */
6968 point=start;
6969 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6970 return(-1);
6971 q=(*mvg_info->primitive_info)+mvg_info->offset;
6972 if (TracePoint(q,point) == MagickFalse)
6973 return(-1);
6974 mvg_info->offset+=q->coordinates;
6975 q+=(ptrdiff_t) q->coordinates;
6976 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6977 primitive_info->coordinates=(size_t) (q-primitive_info);
6978 primitive_info->closed_subpath=MagickTrue;
6979 number_coordinates+=primitive_info->coordinates;
6980 primitive_info=q;
6981 subpath_offset=mvg_info->offset;
6982 z_count++;
6983 break;
6984 }
6985 default:
6986 {
6987 ThrowPointExpectedException(image,token);
6988 break;
6989 }
6990 }
6991 }
6992 if (status == MagickFalse)
6993 return(-1);
6994 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6995 primitive_info->coordinates=(size_t) (q-primitive_info);
6996 number_coordinates+=primitive_info->coordinates;
6997 for (i=0; i < (ssize_t) number_coordinates; i++)
6998 {
6999 q--;
7000 q->primitive=primitive_type;
7001 if (z_count > 1)
7002 q->method=FillToBorderMethod;
7003 }
7004 q=primitive_info;
7005 return((ssize_t) number_coordinates);
7006}
7007
7008static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7009 const PointInfo start,const PointInfo end)
7010{
7011 PointInfo
7012 point;
7013
7014 PrimitiveInfo
7015 *p;
7016
7017 ssize_t
7018 i;
7019
7020 p=primitive_info;
7021 if (TracePoint(p,start) == MagickFalse)
7022 return(MagickFalse);
7023 p+=(ptrdiff_t) p->coordinates;
7024 point.x=start.x;
7025 point.y=end.y;
7026 if (TracePoint(p,point) == MagickFalse)
7027 return(MagickFalse);
7028 p+=(ptrdiff_t) p->coordinates;
7029 if (TracePoint(p,end) == MagickFalse)
7030 return(MagickFalse);
7031 p+=(ptrdiff_t) p->coordinates;
7032 point.x=end.x;
7033 point.y=start.y;
7034 if (TracePoint(p,point) == MagickFalse)
7035 return(MagickFalse);
7036 p+=(ptrdiff_t) p->coordinates;
7037 if (TracePoint(p,start) == MagickFalse)
7038 return(MagickFalse);
7039 p+=(ptrdiff_t) p->coordinates;
7040 primitive_info->coordinates=(size_t) (p-primitive_info);
7041 primitive_info->closed_subpath=MagickTrue;
7042 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7043 {
7044 p->primitive=primitive_info->primitive;
7045 p--;
7046 }
7047 return(MagickTrue);
7048}
7049
7050static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7051 const PointInfo start,const PointInfo end,PointInfo arc)
7052{
7053 PointInfo
7054 degrees,
7055 point,
7056 segment;
7057
7058 PrimitiveInfo
7059 *primitive_info;
7060
7061 PrimitiveInfo
7062 *p;
7063
7064 ssize_t
7065 i;
7066
7067 ssize_t
7068 offset;
7069
7070 offset=mvg_info->offset;
7071 segment.x=fabs(end.x-start.x);
7072 segment.y=fabs(end.y-start.y);
7073 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7074 {
7075 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7076 return(MagickTrue);
7077 }
7078 if (arc.x > (0.5*segment.x))
7079 arc.x=0.5*segment.x;
7080 if (arc.y > (0.5*segment.y))
7081 arc.y=0.5*segment.y;
7082 point.x=start.x+segment.x-arc.x;
7083 point.y=start.y+arc.y;
7084 degrees.x=270.0;
7085 degrees.y=360.0;
7086 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7087 return(MagickFalse);
7088 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7089 mvg_info->offset+=p->coordinates;
7090 point.x=start.x+segment.x-arc.x;
7091 point.y=start.y+segment.y-arc.y;
7092 degrees.x=0.0;
7093 degrees.y=90.0;
7094 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7095 return(MagickFalse);
7096 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7097 mvg_info->offset+=p->coordinates;
7098 point.x=start.x+arc.x;
7099 point.y=start.y+segment.y-arc.y;
7100 degrees.x=90.0;
7101 degrees.y=180.0;
7102 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7103 return(MagickFalse);
7104 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7105 mvg_info->offset+=p->coordinates;
7106 point.x=start.x+arc.x;
7107 point.y=start.y+arc.y;
7108 degrees.x=180.0;
7109 degrees.y=270.0;
7110 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7111 return(MagickFalse);
7112 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7113 mvg_info->offset+=p->coordinates;
7114 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7115 return(MagickFalse);
7116 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7117 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7118 return(MagickFalse);
7119 p+=(ptrdiff_t) p->coordinates;
7120 mvg_info->offset=offset;
7121 primitive_info=(*mvg_info->primitive_info)+offset;
7122 primitive_info->coordinates=(size_t) (p-primitive_info);
7123 primitive_info->closed_subpath=MagickTrue;
7124 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7125 {
7126 p->primitive=primitive_info->primitive;
7127 p--;
7128 }
7129 return(MagickTrue);
7130}
7131
7132static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7133 const size_t number_vertices,const double offset)
7134{
7135 double
7136 distance;
7137
7138 double
7139 dx,
7140 dy;
7141
7142 ssize_t
7143 i;
7144
7145 ssize_t
7146 j;
7147
7148 dx=0.0;
7149 dy=0.0;
7150 for (i=1; i < (ssize_t) number_vertices; i++)
7151 {
7152 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7153 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7154 if ((fabs((double) dx) >= MagickEpsilon) ||
7155 (fabs((double) dy) >= MagickEpsilon))
7156 break;
7157 }
7158 if (i == (ssize_t) number_vertices)
7159 i=(ssize_t) number_vertices-1L;
7160 distance=hypot((double) dx,(double) dy);
7161 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7162 dx*(distance+offset)/distance);
7163 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7164 dy*(distance+offset)/distance);
7165 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7166 {
7167 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7168 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7169 if ((fabs((double) dx) >= MagickEpsilon) ||
7170 (fabs((double) dy) >= MagickEpsilon))
7171 break;
7172 }
7173 distance=hypot((double) dx,(double) dy);
7174 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7175 dx*(distance+offset)/distance);
7176 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7177 dy*(distance+offset)/distance);
7178 return(MagickTrue);
7179}
7180
7181static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7182 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7183{
7184#define MaxStrokePad (6*BezierQuantum+360)
7185#define CheckPathExtent(pad_p,pad_q) \
7186{ \
7187 if ((pad_p) > MaxBezierCoordinates) \
7188 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7189 else \
7190 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7191 { \
7192 if (~extent_p < (pad_p)) \
7193 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7194 else \
7195 { \
7196 extent_p+=(pad_p); \
7197 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7198 MaxStrokePad,sizeof(*stroke_p)); \
7199 } \
7200 } \
7201 if ((pad_q) > MaxBezierCoordinates) \
7202 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7203 else \
7204 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7205 { \
7206 if (~extent_q < (pad_q)) \
7207 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7208 else \
7209 { \
7210 extent_q+=(pad_q); \
7211 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7212 MaxStrokePad,sizeof(*stroke_q)); \
7213 } \
7214 } \
7215 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7216 { \
7217 if (stroke_p != (PointInfo *) NULL) \
7218 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7219 if (stroke_q != (PointInfo *) NULL) \
7220 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7221 polygon_primitive=(PrimitiveInfo *) \
7222 RelinquishMagickMemory(polygon_primitive); \
7223 (void) ThrowMagickException(exception,GetMagickModule(), \
7224 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7225 return((PrimitiveInfo *) NULL); \
7226 } \
7227}
7228
7229 typedef struct _StrokeSegment
7230 {
7231 double
7232 p,
7233 q;
7234 } StrokeSegment;
7235
7236 double
7237 delta_theta,
7238 dot_product,
7239 mid,
7240 miterlimit;
7241
7242 MagickBooleanType
7243 closed_path;
7244
7245 PointInfo
7246 box_p[5],
7247 box_q[5],
7248 center,
7249 offset,
7250 *stroke_p,
7251 *stroke_q;
7252
7253 PrimitiveInfo
7254 *polygon_primitive,
7255 *stroke_polygon;
7256
7257 ssize_t
7258 i;
7259
7260 size_t
7261 arc_segments,
7262 extent_p,
7263 extent_q,
7264 number_vertices;
7265
7266 ssize_t
7267 j,
7268 n,
7269 p,
7270 q;
7271
7272 StrokeSegment
7273 dx = {0.0, 0.0},
7274 dy = {0.0, 0.0},
7275 inverse_slope = {0.0, 0.0},
7276 slope = {0.0, 0.0},
7277 theta = {0.0, 0.0};
7278
7279 /*
7280 Allocate paths.
7281 */
7282 number_vertices=primitive_info->coordinates;
7283 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7284 number_vertices+2UL,sizeof(*polygon_primitive));
7285 if (polygon_primitive == (PrimitiveInfo *) NULL)
7286 {
7287 (void) ThrowMagickException(exception,GetMagickModule(),
7288 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7289 return((PrimitiveInfo *) NULL);
7290 }
7291 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7292 sizeof(*polygon_primitive));
7293 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7294 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7295 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7296 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7297 if ((draw_info->linejoin == MiterJoin) ||
7298 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7299 {
7300 polygon_primitive[number_vertices]=primitive_info[1];
7301 number_vertices++;
7302 }
7303 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7304 /*
7305 Compute the slope for the first line segment, p.
7306 */
7307 closed_path=primitive_info[0].closed_subpath;
7308 dx.p=0.0;
7309 dy.p=0.0;
7310 for (n=1; n < (ssize_t) number_vertices; n++)
7311 {
7312 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7313 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7314 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7315 break;
7316 }
7317 if (n == (ssize_t) number_vertices)
7318 {
7319 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7320 {
7321 /*
7322 Zero length subpath.
7323 */
7324 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7325 sizeof(*stroke_polygon));
7326 stroke_polygon[0]=polygon_primitive[0];
7327 stroke_polygon[0].coordinates=0;
7328 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7329 polygon_primitive);
7330 return(stroke_polygon);
7331 }
7332 n=(ssize_t) number_vertices-1L;
7333 }
7334 extent_p=2*number_vertices;
7335 extent_q=2*number_vertices;
7336 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7337 sizeof(*stroke_p));
7338 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7339 sizeof(*stroke_q));
7340 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7341 {
7342 if (stroke_p != (PointInfo *) NULL)
7343 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7344 if (stroke_q != (PointInfo *) NULL)
7345 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7346 polygon_primitive=(PrimitiveInfo *)
7347 RelinquishMagickMemory(polygon_primitive);
7348 (void) ThrowMagickException(exception,GetMagickModule(),
7349 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7350 return((PrimitiveInfo *) NULL);
7351 }
7352 slope.p=0.0;
7353 inverse_slope.p=0.0;
7354 if (fabs(dx.p) < MagickEpsilon)
7355 {
7356 if (dx.p >= 0.0)
7357 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7358 else
7359 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7360 }
7361 else
7362 if (fabs(dy.p) < MagickEpsilon)
7363 {
7364 if (dy.p >= 0.0)
7365 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7366 else
7367 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7368 }
7369 else
7370 {
7371 slope.p=dy.p/dx.p;
7372 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7373 }
7374 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7375 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7376 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7377 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7378 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7379 offset.y=(double) (offset.x*inverse_slope.p);
7380 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7381 {
7382 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7383 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7384 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7385 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7386 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7387 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7388 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7389 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7390 }
7391 else
7392 {
7393 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7394 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7395 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7396 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7397 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7398 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7399 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7400 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7401 }
7402 /*
7403 Create strokes for the line join attribute: bevel, miter, round.
7404 */
7405 p=0;
7406 q=0;
7407 stroke_q[p++]=box_q[0];
7408 stroke_p[q++]=box_p[0];
7409 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7410 {
7411 /*
7412 Compute the slope for this line segment, q.
7413 */
7414 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7415 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7416 dot_product=dx.q*dx.q+dy.q*dy.q;
7417 if (dot_product < 0.25)
7418 continue;
7419 slope.q=0.0;
7420 inverse_slope.q=0.0;
7421 if (fabs(dx.q) < MagickEpsilon)
7422 {
7423 if (dx.q >= 0.0)
7424 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7425 else
7426 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7427 }
7428 else
7429 if (fabs(dy.q) < MagickEpsilon)
7430 {
7431 if (dy.q >= 0.0)
7432 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7433 else
7434 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7435 }
7436 else
7437 {
7438 slope.q=dy.q/dx.q;
7439 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7440 }
7441 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7442 offset.y=(double) (offset.x*inverse_slope.q);
7443 dot_product=dy.q*offset.x-dx.q*offset.y;
7444 if (dot_product > 0.0)
7445 {
7446 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7447 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7448 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7449 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7450 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7451 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7452 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7453 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7454 }
7455 else
7456 {
7457 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7458 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7459 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7460 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7461 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7462 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7463 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7464 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7465 }
7466 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7467 {
7468 box_p[4]=box_p[1];
7469 box_q[4]=box_q[1];
7470 }
7471 else
7472 {
7473 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7474 box_p[3].y)/(slope.p-slope.q));
7475 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7476 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7477 box_q[3].y)/(slope.p-slope.q));
7478 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7479 }
7480 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7481 dot_product=dx.q*dy.p-dx.p*dy.q;
7482 if (dot_product <= 0.0)
7483 switch (draw_info->linejoin)
7484 {
7485 case BevelJoin:
7486 {
7487 stroke_q[q++]=box_q[1];
7488 stroke_q[q++]=box_q[2];
7489 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7490 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7491 if (dot_product <= miterlimit)
7492 stroke_p[p++]=box_p[4];
7493 else
7494 {
7495 stroke_p[p++]=box_p[1];
7496 stroke_p[p++]=box_p[2];
7497 }
7498 break;
7499 }
7500 case MiterJoin:
7501 {
7502 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7503 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7504 if (dot_product <= miterlimit)
7505 {
7506 stroke_q[q++]=box_q[4];
7507 stroke_p[p++]=box_p[4];
7508 }
7509 else
7510 {
7511 stroke_q[q++]=box_q[1];
7512 stroke_q[q++]=box_q[2];
7513 stroke_p[p++]=box_p[1];
7514 stroke_p[p++]=box_p[2];
7515 }
7516 break;
7517 }
7518 case RoundJoin:
7519 {
7520 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7521 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7522 if (dot_product <= miterlimit)
7523 stroke_p[p++]=box_p[4];
7524 else
7525 {
7526 stroke_p[p++]=box_p[1];
7527 stroke_p[p++]=box_p[2];
7528 }
7529 center=polygon_primitive[n].point;
7530 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7531 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7532 if (theta.q < theta.p)
7533 theta.q+=2.0*MagickPI;
7534 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7535 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7536 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7537 stroke_q[q].x=box_q[1].x;
7538 stroke_q[q].y=box_q[1].y;
7539 q++;
7540 for (j=1; j < (ssize_t) arc_segments; j++)
7541 {
7542 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7543 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7544 (theta.p+delta_theta),DegreesToRadians(360.0))));
7545 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7546 (theta.p+delta_theta),DegreesToRadians(360.0))));
7547 q++;
7548 }
7549 stroke_q[q++]=box_q[2];
7550 break;
7551 }
7552 default:
7553 break;
7554 }
7555 else
7556 switch (draw_info->linejoin)
7557 {
7558 case BevelJoin:
7559 {
7560 stroke_p[p++]=box_p[1];
7561 stroke_p[p++]=box_p[2];
7562 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7563 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7564 if (dot_product <= miterlimit)
7565 stroke_q[q++]=box_q[4];
7566 else
7567 {
7568 stroke_q[q++]=box_q[1];
7569 stroke_q[q++]=box_q[2];
7570 }
7571 break;
7572 }
7573 case MiterJoin:
7574 {
7575 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7576 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7577 if (dot_product <= miterlimit)
7578 {
7579 stroke_q[q++]=box_q[4];
7580 stroke_p[p++]=box_p[4];
7581 }
7582 else
7583 {
7584 stroke_q[q++]=box_q[1];
7585 stroke_q[q++]=box_q[2];
7586 stroke_p[p++]=box_p[1];
7587 stroke_p[p++]=box_p[2];
7588 }
7589 break;
7590 }
7591 case RoundJoin:
7592 {
7593 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7594 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7595 if (dot_product <= miterlimit)
7596 stroke_q[q++]=box_q[4];
7597 else
7598 {
7599 stroke_q[q++]=box_q[1];
7600 stroke_q[q++]=box_q[2];
7601 }
7602 center=polygon_primitive[n].point;
7603 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7604 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7605 if (theta.p < theta.q)
7606 theta.p+=2.0*MagickPI;
7607 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7608 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7609 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7610 stroke_p[p++]=box_p[1];
7611 for (j=1; j < (ssize_t) arc_segments; j++)
7612 {
7613 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7614 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7615 (theta.p+delta_theta),DegreesToRadians(360.0))));
7616 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7617 (theta.p+delta_theta),DegreesToRadians(360.0))));
7618 p++;
7619 }
7620 stroke_p[p++]=box_p[2];
7621 break;
7622 }
7623 default:
7624 break;
7625 }
7626 slope.p=slope.q;
7627 inverse_slope.p=inverse_slope.q;
7628 box_p[0]=box_p[2];
7629 box_p[1]=box_p[3];
7630 box_q[0]=box_q[2];
7631 box_q[1]=box_q[3];
7632 dx.p=dx.q;
7633 dy.p=dy.q;
7634 n=i;
7635 }
7636 stroke_p[p++]=box_p[1];
7637 stroke_q[q++]=box_q[1];
7638 /*
7639 Trace stroked polygon.
7640 */
7641 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7642 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7643 if (stroke_polygon == (PrimitiveInfo *) NULL)
7644 {
7645 (void) ThrowMagickException(exception,GetMagickModule(),
7646 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7647 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7648 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7649 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7650 polygon_primitive);
7651 return(stroke_polygon);
7652 }
7653 for (i=0; i < (ssize_t) p; i++)
7654 {
7655 stroke_polygon[i]=polygon_primitive[0];
7656 stroke_polygon[i].point=stroke_p[i];
7657 }
7658 if (closed_path != MagickFalse)
7659 {
7660 stroke_polygon[i]=polygon_primitive[0];
7661 stroke_polygon[i].point=stroke_polygon[0].point;
7662 i++;
7663 }
7664 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7665 {
7666 stroke_polygon[i]=polygon_primitive[0];
7667 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7668 }
7669 if (closed_path != MagickFalse)
7670 {
7671 stroke_polygon[i]=polygon_primitive[0];
7672 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7673 i++;
7674 }
7675 stroke_polygon[i]=polygon_primitive[0];
7676 stroke_polygon[i].point=stroke_polygon[0].point;
7677 i++;
7678 stroke_polygon[i].primitive=UndefinedPrimitive;
7679 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7680 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7681 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7682 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7683 return(stroke_polygon);
7684}
_EdgeInfo
Definition draw.c:112
_ElementInfo
Definition draw.c:136
_MVGInfo
Definition draw.c:146
_PathInfo
Definition draw.c:182
_PolygonInfo
Definition draw.c:164