2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % MagickCore Image Special Effects Methods %
20 % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
43 #include "MagickCore/studio.h"
44 #include "MagickCore/annotate.h"
45 #include "MagickCore/artifact.h"
46 #include "MagickCore/attribute.h"
47 #include "MagickCore/cache.h"
48 #include "MagickCore/cache-view.h"
49 #include "MagickCore/color.h"
50 #include "MagickCore/color-private.h"
51 #include "MagickCore/composite.h"
52 #include "MagickCore/decorate.h"
53 #include "MagickCore/draw.h"
54 #include "MagickCore/effect.h"
55 #include "MagickCore/enhance.h"
56 #include "MagickCore/exception.h"
57 #include "MagickCore/exception-private.h"
58 #include "MagickCore/fx.h"
59 #include "MagickCore/fx-private.h"
60 #include "MagickCore/gem.h"
61 #include "MagickCore/gem-private.h"
62 #include "MagickCore/geometry.h"
63 #include "MagickCore/layer.h"
64 #include "MagickCore/list.h"
65 #include "MagickCore/log.h"
66 #include "MagickCore/image.h"
67 #include "MagickCore/image-private.h"
68 #include "MagickCore/magick.h"
69 #include "MagickCore/memory_.h"
70 #include "MagickCore/monitor.h"
71 #include "MagickCore/monitor-private.h"
72 #include "MagickCore/option.h"
73 #include "MagickCore/pixel.h"
74 #include "MagickCore/pixel-accessor.h"
75 #include "MagickCore/property.h"
76 #include "MagickCore/quantum.h"
77 #include "MagickCore/quantum-private.h"
78 #include "MagickCore/random_.h"
79 #include "MagickCore/random-private.h"
80 #include "MagickCore/resample.h"
81 #include "MagickCore/resample-private.h"
82 #include "MagickCore/resize.h"
83 #include "MagickCore/shear.h"
84 #include "MagickCore/splay-tree.h"
85 #include "MagickCore/statistic.h"
86 #include "MagickCore/string_.h"
87 #include "MagickCore/string-private.h"
88 #include "MagickCore/thread-private.h"
89 #include "MagickCore/transform.h"
90 #include "MagickCore/utility.h"
95 #define LeftShiftOperator 0xf5
96 #define RightShiftOperator 0xf6
97 #define LessThanEqualOperator 0xf7
98 #define GreaterThanEqualOperator 0xf8
99 #define EqualOperator 0xf9
100 #define NotEqualOperator 0xfa
101 #define LogicalAndOperator 0xfb
102 #define LogicalOrOperator 0xfc
103 #define ExponentialNotation 0xfd
131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
135 + A c q u i r e F x I n f o %
139 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
141 % AcquireFxInfo() allocates the FxInfo structure.
143 % The format of the AcquireFxInfo method is:
145 % FxInfo *AcquireFxInfo(Image *image,const char *expression)
147 % A description of each parameter follows:
149 % o image: the image.
151 % o expression: the expression.
154 MagickPrivate FxInfo *AcquireFxInfo(const Image *image,const char *expression)
168 fx_info=(FxInfo *) AcquireMagickMemory(sizeof(*fx_info));
169 if (fx_info == (FxInfo *) NULL)
170 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
171 (void) ResetMagickMemory(fx_info,0,sizeof(*fx_info));
172 fx_info->exception=AcquireExceptionInfo();
173 fx_info->images=image;
174 fx_info->colors=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
175 RelinquishMagickMemory);
176 fx_info->symbols=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
177 RelinquishMagickMemory);
178 fx_info->view=(CacheView **) AcquireQuantumMemory(GetImageListLength(
179 fx_info->images),sizeof(*fx_info->view));
180 if (fx_info->view == (CacheView **) NULL)
181 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
183 next=GetFirstImageInList(fx_info->images);
184 for ( ; next != (Image *) NULL; next=next->next)
186 fx_info->view[i]=AcquireCacheView(next);
189 fx_info->random_info=AcquireRandomInfo();
190 fx_info->expression=ConstantString(expression);
191 fx_info->file=stderr;
192 (void) SubstituteString(&fx_info->expression," ",""); /* compact string */
194 Force right-to-left associativity for unary negation.
196 (void) SubstituteString(&fx_info->expression,"-","-1.0*");
197 if ((strstr(fx_info->expression,"e+") != (char *) NULL) ||
198 (strstr(fx_info->expression,"e-") != (char *) NULL))
201 Convert scientific notation.
203 (void) SubstituteString(&fx_info->expression,"0e+","0**10^");
204 (void) SubstituteString(&fx_info->expression,"1e+","1**10^");
205 (void) SubstituteString(&fx_info->expression,"2e+","2**10^");
206 (void) SubstituteString(&fx_info->expression,"3e+","3**10^");
207 (void) SubstituteString(&fx_info->expression,"4e+","4**10^");
208 (void) SubstituteString(&fx_info->expression,"5e+","5**10^");
209 (void) SubstituteString(&fx_info->expression,"6e+","6**10^");
210 (void) SubstituteString(&fx_info->expression,"7e+","7**10^");
211 (void) SubstituteString(&fx_info->expression,"8e+","8**10^");
212 (void) SubstituteString(&fx_info->expression,"9e+","9**10^");
213 (void) SubstituteString(&fx_info->expression,"0e-1.0*","0**10^-");
214 (void) SubstituteString(&fx_info->expression,"1e-1.0*","1**10^-");
215 (void) SubstituteString(&fx_info->expression,"2e-1.0*","2**10^-");
216 (void) SubstituteString(&fx_info->expression,"3e-1.0*","3**10^-");
217 (void) SubstituteString(&fx_info->expression,"4e-1.0*","4**10^-");
218 (void) SubstituteString(&fx_info->expression,"5e-1.0*","5**10^-");
219 (void) SubstituteString(&fx_info->expression,"6e-1.0*","6**10^-");
220 (void) SubstituteString(&fx_info->expression,"7e-1.0*","7**10^-");
221 (void) SubstituteString(&fx_info->expression,"8e-1.0*","8**10^-");
222 (void) SubstituteString(&fx_info->expression,"9e-1.0*","9**10^-");
224 if ((strstr(fx_info->expression,"E+") != (char *) NULL) ||
225 (strstr(fx_info->expression,"E-") != (char *) NULL))
228 Convert scientific notation.
230 (void) SubstituteString(&fx_info->expression,"0E+","0**10^");
231 (void) SubstituteString(&fx_info->expression,"1E+","1**10^");
232 (void) SubstituteString(&fx_info->expression,"2E+","2**10^");
233 (void) SubstituteString(&fx_info->expression,"3E+","3**10^");
234 (void) SubstituteString(&fx_info->expression,"4E+","4**10^");
235 (void) SubstituteString(&fx_info->expression,"5E+","5**10^");
236 (void) SubstituteString(&fx_info->expression,"6E+","6**10^");
237 (void) SubstituteString(&fx_info->expression,"7E+","7**10^");
238 (void) SubstituteString(&fx_info->expression,"8E+","8**10^");
239 (void) SubstituteString(&fx_info->expression,"9E+","9**10^");
240 (void) SubstituteString(&fx_info->expression,"0E-1.0*","0**10^-");
241 (void) SubstituteString(&fx_info->expression,"1E-1.0*","1**10^-");
242 (void) SubstituteString(&fx_info->expression,"2E-1.0*","2**10^-");
243 (void) SubstituteString(&fx_info->expression,"3E-1.0*","3**10^-");
244 (void) SubstituteString(&fx_info->expression,"4E-1.0*","4**10^-");
245 (void) SubstituteString(&fx_info->expression,"5E-1.0*","5**10^-");
246 (void) SubstituteString(&fx_info->expression,"6E-1.0*","6**10^-");
247 (void) SubstituteString(&fx_info->expression,"7E-1.0*","7**10^-");
248 (void) SubstituteString(&fx_info->expression,"8E-1.0*","8**10^-");
249 (void) SubstituteString(&fx_info->expression,"9E-1.0*","9**10^-");
252 Convert complex to simple operators.
255 *fx_op=(char) LeftShiftOperator;
256 (void) SubstituteString(&fx_info->expression,"<<",fx_op);
257 *fx_op=(char) RightShiftOperator;
258 (void) SubstituteString(&fx_info->expression,">>",fx_op);
259 *fx_op=(char) LessThanEqualOperator;
260 (void) SubstituteString(&fx_info->expression,"<=",fx_op);
261 *fx_op=(char) GreaterThanEqualOperator;
262 (void) SubstituteString(&fx_info->expression,">=",fx_op);
263 *fx_op=(char) EqualOperator;
264 (void) SubstituteString(&fx_info->expression,"==",fx_op);
265 *fx_op=(char) NotEqualOperator;
266 (void) SubstituteString(&fx_info->expression,"!=",fx_op);
267 *fx_op=(char) LogicalAndOperator;
268 (void) SubstituteString(&fx_info->expression,"&&",fx_op);
269 *fx_op=(char) LogicalOrOperator;
270 (void) SubstituteString(&fx_info->expression,"||",fx_op);
271 *fx_op=(char) ExponentialNotation;
272 (void) SubstituteString(&fx_info->expression,"**",fx_op);
277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
281 % A d d N o i s e I m a g e %
285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
287 % AddNoiseImage() adds random noise to the image.
289 % The format of the AddNoiseImage method is:
291 % Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
292 % const double attenuate,ExceptionInfo *exception)
294 % A description of each parameter follows:
296 % o image: the image.
298 % o channel: the channel type.
300 % o noise_type: The type of noise: Uniform, Gaussian, Multiplicative,
301 % Impulse, Laplacian, or Poisson.
303 % o attenuate: attenuate the random distribution.
305 % o exception: return any errors or warnings in this structure.
308 MagickExport Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
309 const double attenuate,ExceptionInfo *exception)
311 #define AddNoiseImageTag "AddNoise/Image"
327 **restrict random_info;
333 Initialize noise image attributes.
335 assert(image != (const Image *) NULL);
336 assert(image->signature == MagickSignature);
337 if (image->debug != MagickFalse)
338 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
339 assert(exception != (ExceptionInfo *) NULL);
340 assert(exception->signature == MagickSignature);
341 noise_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
342 if (noise_image == (Image *) NULL)
343 return((Image *) NULL);
344 if (SetImageStorageClass(noise_image,DirectClass,exception) == MagickFalse)
346 noise_image=DestroyImage(noise_image);
347 return((Image *) NULL);
350 Add noise in each row.
354 random_info=AcquireRandomInfoThreadSet();
355 image_view=AcquireCacheView(image);
356 noise_view=AcquireCacheView(noise_image);
357 #if defined(MAGICKCORE_OPENMP_SUPPORT)
358 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
360 for (y=0; y < (ssize_t) image->rows; y++)
363 id = GetOpenMPThreadId();
368 register const Quantum
377 if (status == MagickFalse)
379 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
380 q=GetCacheViewAuthenticPixels(noise_view,0,y,noise_image->columns,1,
382 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
387 for (x=0; x < (ssize_t) image->columns; x++)
392 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
401 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
402 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
403 noise_traits=GetPixelChannelMapTraits(noise_image,channel);
404 if ((traits == UndefinedPixelTrait) ||
405 (noise_traits == UndefinedPixelTrait))
407 if ((noise_traits & CopyPixelTrait) != 0)
409 SetPixelChannel(noise_image,channel,p[i],q);
412 SetPixelChannel(noise_image,channel,ClampToQuantum(
413 GenerateDifferentialNoise(random_info[id],p[i],noise_type,attenuate)),
416 p+=GetPixelChannels(image);
417 q+=GetPixelChannels(noise_image);
419 sync=SyncCacheViewAuthenticPixels(noise_view,exception);
420 if (sync == MagickFalse)
422 if (image->progress_monitor != (MagickProgressMonitor) NULL)
427 #if defined(MAGICKCORE_OPENMP_SUPPORT)
428 #pragma omp critical (MagickCore_AddNoiseImage)
430 proceed=SetImageProgress(image,AddNoiseImageTag,progress++,
432 if (proceed == MagickFalse)
436 noise_view=DestroyCacheView(noise_view);
437 image_view=DestroyCacheView(image_view);
438 random_info=DestroyRandomInfoThreadSet(random_info);
439 if (status == MagickFalse)
440 noise_image=DestroyImage(noise_image);
445 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
449 % B l u e S h i f t I m a g e %
453 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
455 % BlueShiftImage() mutes the colors of the image to simulate a scene at
456 % nighttime in the moonlight.
458 % The format of the BlueShiftImage method is:
460 % Image *BlueShiftImage(const Image *image,const double factor,
461 % ExceptionInfo *exception)
463 % A description of each parameter follows:
465 % o image: the image.
467 % o factor: the shift factor.
469 % o exception: return any errors or warnings in this structure.
472 MagickExport Image *BlueShiftImage(const Image *image,const double factor,
473 ExceptionInfo *exception)
475 #define BlueShiftImageTag "BlueShift/Image"
494 Allocate blue shift image.
496 assert(image != (const Image *) NULL);
497 assert(image->signature == MagickSignature);
498 if (image->debug != MagickFalse)
499 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
500 assert(exception != (ExceptionInfo *) NULL);
501 assert(exception->signature == MagickSignature);
502 shift_image=CloneImage(image,image->columns,image->rows,MagickTrue,
504 if (shift_image == (Image *) NULL)
505 return((Image *) NULL);
506 if (SetImageStorageClass(shift_image,DirectClass,exception) == MagickFalse)
508 shift_image=DestroyImage(shift_image);
509 return((Image *) NULL);
512 Blue-shift DirectClass image.
516 image_view=AcquireCacheView(image);
517 shift_view=AcquireCacheView(shift_image);
518 #if defined(MAGICKCORE_OPENMP_SUPPORT)
519 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
521 for (y=0; y < (ssize_t) image->rows; y++)
532 register const Quantum
541 if (status == MagickFalse)
543 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
544 q=QueueCacheViewAuthenticPixels(shift_view,0,y,shift_image->columns,1,
546 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
551 for (x=0; x < (ssize_t) image->columns; x++)
553 quantum=GetPixelRed(image,p);
554 if (GetPixelGreen(image,p) < quantum)
555 quantum=GetPixelGreen(image,p);
556 if (GetPixelBlue(image,p) < quantum)
557 quantum=GetPixelBlue(image,p);
558 pixel.red=0.5*(GetPixelRed(image,p)+factor*quantum);
559 pixel.green=0.5*(GetPixelGreen(image,p)+factor*quantum);
560 pixel.blue=0.5*(GetPixelBlue(image,p)+factor*quantum);
561 quantum=GetPixelRed(image,p);
562 if (GetPixelGreen(image,p) > quantum)
563 quantum=GetPixelGreen(image,p);
564 if (GetPixelBlue(image,p) > quantum)
565 quantum=GetPixelBlue(image,p);
566 pixel.red=0.5*(pixel.red+factor*quantum);
567 pixel.green=0.5*(pixel.green+factor*quantum);
568 pixel.blue=0.5*(pixel.blue+factor*quantum);
569 SetPixelRed(shift_image,ClampToQuantum(pixel.red),q);
570 SetPixelGreen(shift_image,ClampToQuantum(pixel.green),q);
571 SetPixelBlue(shift_image,ClampToQuantum(pixel.blue),q);
572 p+=GetPixelChannels(image);
573 q+=GetPixelChannels(shift_image);
575 sync=SyncCacheViewAuthenticPixels(shift_view,exception);
576 if (sync == MagickFalse)
578 if (image->progress_monitor != (MagickProgressMonitor) NULL)
583 #if defined(MAGICKCORE_OPENMP_SUPPORT)
584 #pragma omp critical (MagickCore_BlueShiftImage)
586 proceed=SetImageProgress(image,BlueShiftImageTag,progress++,
588 if (proceed == MagickFalse)
592 image_view=DestroyCacheView(image_view);
593 shift_view=DestroyCacheView(shift_view);
594 if (status == MagickFalse)
595 shift_image=DestroyImage(shift_image);
600 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
604 % C h a r c o a l I m a g e %
608 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
610 % CharcoalImage() creates a new image that is a copy of an existing one with
611 % the edge highlighted. It allocates the memory necessary for the new Image
612 % structure and returns a pointer to the new image.
614 % The format of the CharcoalImage method is:
616 % Image *CharcoalImage(const Image *image,const double radius,
617 % const double sigma,const double bias,ExceptionInfo *exception)
619 % A description of each parameter follows:
621 % o image: the image.
623 % o radius: the radius of the pixel neighborhood.
625 % o sigma: the standard deviation of the Gaussian, in pixels.
629 % o exception: return any errors or warnings in this structure.
632 MagickExport Image *CharcoalImage(const Image *image,const double radius,
633 const double sigma,const double bias,ExceptionInfo *exception)
640 assert(image != (Image *) NULL);
641 assert(image->signature == MagickSignature);
642 if (image->debug != MagickFalse)
643 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
644 assert(exception != (ExceptionInfo *) NULL);
645 assert(exception->signature == MagickSignature);
646 clone_image=CloneImage(image,0,0,MagickTrue,exception);
647 if (clone_image == (Image *) NULL)
648 return((Image *) NULL);
649 (void) SetImageType(clone_image,GrayscaleType,exception);
650 edge_image=EdgeImage(clone_image,radius,sigma,exception);
651 clone_image=DestroyImage(clone_image);
652 if (edge_image == (Image *) NULL)
653 return((Image *) NULL);
654 charcoal_image=BlurImage(edge_image,radius,sigma,bias,exception);
655 edge_image=DestroyImage(edge_image);
656 if (charcoal_image == (Image *) NULL)
657 return((Image *) NULL);
658 (void) NormalizeImage(charcoal_image,exception);
659 (void) NegateImage(charcoal_image,MagickFalse,exception);
660 (void) SetImageType(charcoal_image,GrayscaleType,exception);
661 return(charcoal_image);
665 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
669 % C o l o r i z e I m a g e %
673 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
675 % ColorizeImage() blends the fill color with each pixel in the image.
676 % A percentage blend is specified with opacity. Control the application
677 % of different color components by specifying a different percentage for
678 % each component (e.g. 90/100/10 is 90% red, 100% green, and 10% blue).
680 % The format of the ColorizeImage method is:
682 % Image *ColorizeImage(const Image *image,const char *blend,
683 % const PixelInfo *colorize,ExceptionInfo *exception)
685 % A description of each parameter follows:
687 % o image: the image.
689 % o blend: A character string indicating the level of blending as a
692 % o colorize: A color value.
694 % o exception: return any errors or warnings in this structure.
697 MagickExport Image *ColorizeImage(const Image *image,const char *blend,
698 const PixelInfo *colorize,ExceptionInfo *exception)
700 #define ColorizeImageTag "Colorize/Image"
728 Allocate colorized image.
730 assert(image != (const Image *) NULL);
731 assert(image->signature == MagickSignature);
732 if (image->debug != MagickFalse)
733 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
734 assert(exception != (ExceptionInfo *) NULL);
735 assert(exception->signature == MagickSignature);
736 colorize_image=CloneImage(image,image->columns,image->rows,MagickTrue,
738 if (colorize_image == (Image *) NULL)
739 return((Image *) NULL);
740 if (SetImageStorageClass(colorize_image,DirectClass,exception) == MagickFalse)
742 colorize_image=DestroyImage(colorize_image);
743 return((Image *) NULL);
745 if (blend == (const char *) NULL)
746 return(colorize_image);
748 Determine RGB values of the pen color.
750 GetPixelInfo(image,&pixel);
751 flags=ParseGeometry(blend,&geometry_info);
752 pixel.red=geometry_info.rho;
753 pixel.green=geometry_info.rho;
754 pixel.blue=geometry_info.rho;
756 if ((flags & SigmaValue) != 0)
757 pixel.green=geometry_info.sigma;
758 if ((flags & XiValue) != 0)
759 pixel.blue=geometry_info.xi;
760 if ((flags & PsiValue) != 0)
761 pixel.alpha=geometry_info.psi;
762 if (pixel.colorspace == CMYKColorspace)
764 pixel.black=geometry_info.rho;
765 if ((flags & PsiValue) != 0)
766 pixel.black=geometry_info.psi;
767 if ((flags & ChiValue) != 0)
768 pixel.alpha=geometry_info.chi;
771 Colorize DirectClass image.
775 image_view=AcquireCacheView(image);
776 colorize_view=AcquireCacheView(colorize_image);
777 #if defined(MAGICKCORE_OPENMP_SUPPORT)
778 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
780 for (y=0; y < (ssize_t) image->rows; y++)
785 register const Quantum
794 if (status == MagickFalse)
796 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
797 q=QueueCacheViewAuthenticPixels(colorize_view,0,y,colorize_image->columns,1,
799 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
804 for (x=0; x < (ssize_t) image->columns; x++)
809 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
818 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
819 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
820 colorize_traits=GetPixelChannelMapTraits(colorize_image,channel);
821 if ((traits == UndefinedPixelTrait) ||
822 (colorize_traits == UndefinedPixelTrait))
824 if ((colorize_traits & CopyPixelTrait) != 0)
826 SetPixelChannel(colorize_image,channel,p[i],q);
831 case RedPixelChannel:
833 SetPixelChannel(colorize_image,channel,ClampToQuantum((p[i]*
834 (100.0-pixel.red)+colorize->red*pixel.red)/100.0),q);
837 case GreenPixelChannel:
839 SetPixelChannel(colorize_image,channel,ClampToQuantum((p[i]*
840 (100.0-pixel.green)+colorize->green*pixel.green)/100.0),q);
843 case BluePixelChannel:
845 SetPixelChannel(colorize_image,channel,ClampToQuantum((p[i]*
846 (100.0-pixel.blue)+colorize->blue*pixel.blue)/100.0),q);
849 case BlackPixelChannel:
851 SetPixelChannel(colorize_image,channel,ClampToQuantum((p[i]*
852 (100.0-pixel.black)+colorize->black*pixel.black)/100.0),q);
855 case AlphaPixelChannel:
857 SetPixelChannel(colorize_image,channel,ClampToQuantum((p[i]*
858 (100.0-pixel.alpha)+colorize->alpha*pixel.alpha)/100.0),q);
863 SetPixelChannel(colorize_image,channel,p[i],q);
868 p+=GetPixelChannels(image);
869 q+=GetPixelChannels(colorize_image);
871 sync=SyncCacheViewAuthenticPixels(colorize_view,exception);
872 if (sync == MagickFalse)
874 if (image->progress_monitor != (MagickProgressMonitor) NULL)
879 #if defined(MAGICKCORE_OPENMP_SUPPORT)
880 #pragma omp critical (MagickCore_ColorizeImage)
882 proceed=SetImageProgress(image,ColorizeImageTag,progress++,image->rows);
883 if (proceed == MagickFalse)
887 image_view=DestroyCacheView(image_view);
888 colorize_view=DestroyCacheView(colorize_view);
889 if (status == MagickFalse)
890 colorize_image=DestroyImage(colorize_image);
891 return(colorize_image);
895 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
899 % C o l o r M a t r i x I m a g e %
903 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
905 % ColorMatrixImage() applies color transformation to an image. This method
906 % permits saturation changes, hue rotation, luminance to alpha, and various
907 % other effects. Although variable-sized transformation matrices can be used,
908 % typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA
909 % (or RGBA with offsets). The matrix is similar to those used by Adobe Flash
910 % except offsets are in column 6 rather than 5 (in support of CMYKA images)
911 % and offsets are normalized (divide Flash offset by 255).
913 % The format of the ColorMatrixImage method is:
915 % Image *ColorMatrixImage(const Image *image,
916 % const KernelInfo *color_matrix,ExceptionInfo *exception)
918 % A description of each parameter follows:
920 % o image: the image.
922 % o color_matrix: the color matrix.
924 % o exception: return any errors or warnings in this structure.
927 MagickExport Image *ColorMatrixImage(const Image *image,
928 const KernelInfo *color_matrix,ExceptionInfo *exception)
930 #define ColorMatrixImageTag "ColorMatrix/Image"
939 { 1.0, 0.0, 0.0, 0.0, 0.0, 0.0 },
940 { 0.0, 1.0, 0.0, 0.0, 0.0, 0.0 },
941 { 0.0, 0.0, 1.0, 0.0, 0.0, 0.0 },
942 { 0.0, 0.0, 0.0, 1.0, 0.0, 0.0 },
943 { 0.0, 0.0, 0.0, 0.0, 1.0, 0.0 },
944 { 0.0, 0.0, 0.0, 0.0, 0.0, 1.0 }
967 assert(image != (Image *) NULL);
968 assert(image->signature == MagickSignature);
969 if (image->debug != MagickFalse)
970 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
971 assert(exception != (ExceptionInfo *) NULL);
972 assert(exception->signature == MagickSignature);
974 for (v=0; v < (ssize_t) color_matrix->height; v++)
975 for (u=0; u < (ssize_t) color_matrix->width; u++)
977 if ((v < 6) && (u < 6))
978 ColorMatrix[v][u]=color_matrix->values[i];
982 Initialize color image.
984 color_image=CloneImage(image,0,0,MagickTrue,exception);
985 if (color_image == (Image *) NULL)
986 return((Image *) NULL);
987 if (SetImageStorageClass(color_image,DirectClass,exception) == MagickFalse)
989 color_image=DestroyImage(color_image);
990 return((Image *) NULL);
992 if (image->debug != MagickFalse)
995 format[MaxTextExtent],
998 (void) LogMagickEvent(TransformEvent,GetMagickModule(),
999 " ColorMatrix image with color matrix:");
1000 message=AcquireString("");
1001 for (v=0; v < 6; v++)
1004 (void) FormatLocaleString(format,MaxTextExtent,"%.20g: ",(double) v);
1005 (void) ConcatenateString(&message,format);
1006 for (u=0; u < 6; u++)
1008 (void) FormatLocaleString(format,MaxTextExtent,"%+f ",
1010 (void) ConcatenateString(&message,format);
1012 (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message);
1014 message=DestroyString(message);
1021 image_view=AcquireCacheView(image);
1022 color_view=AcquireCacheView(color_image);
1023 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1024 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
1026 for (y=0; y < (ssize_t) image->rows; y++)
1031 register const Quantum
1040 if (status == MagickFalse)
1042 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1043 q=GetCacheViewAuthenticPixels(color_view,0,y,color_image->columns,1,
1045 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1050 for (x=0; x < (ssize_t) image->columns; x++)
1058 height=color_matrix->height > 6 ? 6UL : color_matrix->height;
1059 for (v=0; v < (ssize_t) height; v++)
1061 pixel=ColorMatrix[v][0]*GetPixelRed(image,p)+ColorMatrix[v][1]*
1062 GetPixelGreen(image,p)+ColorMatrix[v][2]*GetPixelBlue(image,p);
1063 if (image->colorspace == CMYKColorspace)
1064 pixel+=ColorMatrix[v][3]*GetPixelBlack(image,p);
1065 if (image->matte != MagickFalse)
1066 pixel+=ColorMatrix[v][4]*GetPixelAlpha(image,p);
1067 pixel+=QuantumRange*ColorMatrix[v][5];
1070 case 0: SetPixelRed(color_image,ClampToQuantum(pixel),q); break;
1071 case 1: SetPixelGreen(color_image,ClampToQuantum(pixel),q); break;
1072 case 2: SetPixelBlue(color_image,ClampToQuantum(pixel),q); break;
1075 if (image->colorspace == CMYKColorspace)
1076 SetPixelBlack(color_image,ClampToQuantum(pixel),q);
1081 if (image->matte != MagickFalse)
1082 SetPixelAlpha(color_image,ClampToQuantum(pixel),q);
1087 p+=GetPixelChannels(image);
1088 q+=GetPixelChannels(color_image);
1090 if (SyncCacheViewAuthenticPixels(color_view,exception) == MagickFalse)
1092 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1097 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1098 #pragma omp critical (MagickCore_ColorMatrixImage)
1100 proceed=SetImageProgress(image,ColorMatrixImageTag,progress++,
1102 if (proceed == MagickFalse)
1106 color_view=DestroyCacheView(color_view);
1107 image_view=DestroyCacheView(image_view);
1108 if (status == MagickFalse)
1109 color_image=DestroyImage(color_image);
1110 return(color_image);
1114 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1118 + D e s t r o y F x I n f o %
1122 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1124 % DestroyFxInfo() deallocates memory associated with an FxInfo structure.
1126 % The format of the DestroyFxInfo method is:
1128 % ImageInfo *DestroyFxInfo(ImageInfo *fx_info)
1130 % A description of each parameter follows:
1132 % o fx_info: the fx info.
1135 MagickPrivate FxInfo *DestroyFxInfo(FxInfo *fx_info)
1140 fx_info->exception=DestroyExceptionInfo(fx_info->exception);
1141 fx_info->expression=DestroyString(fx_info->expression);
1142 fx_info->symbols=DestroySplayTree(fx_info->symbols);
1143 fx_info->colors=DestroySplayTree(fx_info->colors);
1144 for (i=(ssize_t) GetImageListLength(fx_info->images)-1; i >= 0; i--)
1145 fx_info->view[i]=DestroyCacheView(fx_info->view[i]);
1146 fx_info->view=(CacheView **) RelinquishMagickMemory(fx_info->view);
1147 fx_info->random_info=DestroyRandomInfo(fx_info->random_info);
1148 fx_info=(FxInfo *) RelinquishMagickMemory(fx_info);
1153 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1157 + F x E v a l u a t e C h a n n e l E x p r e s s i o n %
1161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1163 % FxEvaluateChannelExpression() evaluates an expression and returns the
1166 % The format of the FxEvaluateExpression method is:
1168 % MagickRealType FxEvaluateChannelExpression(FxInfo *fx_info,
1169 % const PixelChannel channel,const ssize_t x,const ssize_t y,
1170 % MagickRealType *alpha,Exceptioninfo *exception)
1171 % MagickRealType FxEvaluateExpression(FxInfo *fx_info,
1172 % MagickRealType *alpha,Exceptioninfo *exception)
1174 % A description of each parameter follows:
1176 % o fx_info: the fx info.
1178 % o channel: the channel.
1180 % o x,y: the pixel position.
1182 % o alpha: the result.
1184 % o exception: return any errors or warnings in this structure.
1188 static inline double MagickMax(const double x,const double y)
1195 static inline double MagickMin(const double x,const double y)
1202 static MagickRealType FxChannelStatistics(FxInfo *fx_info,const Image *image,
1203 PixelChannel channel,const char *symbol,ExceptionInfo *exception)
1207 statistic[MaxTextExtent];
1215 for (p=symbol; (*p != '.') && (*p != '\0'); p++) ;
1217 switch (*++p) /* e.g. depth.r */
1219 case 'r': channel=RedPixelChannel; break;
1220 case 'g': channel=GreenPixelChannel; break;
1221 case 'b': channel=BluePixelChannel; break;
1222 case 'c': channel=CyanPixelChannel; break;
1223 case 'm': channel=MagentaPixelChannel; break;
1224 case 'y': channel=YellowPixelChannel; break;
1225 case 'k': channel=BlackPixelChannel; break;
1228 (void) FormatLocaleString(key,MaxTextExtent,"%p.%.20g.%s",(void *) image,
1229 (double) channel,symbol);
1230 value=(const char *) GetValueFromSplayTree(fx_info->symbols,key);
1231 if (value != (const char *) NULL)
1232 return(QuantumScale*InterpretLocaleValue(value,(char **) NULL));
1233 (void) DeleteNodeFromSplayTree(fx_info->symbols,key);
1234 if (LocaleNCompare(symbol,"depth",5) == 0)
1239 depth=GetImageDepth(image,exception);
1240 (void) FormatLocaleString(statistic,MaxTextExtent,"%.20g",(double) depth);
1242 if (LocaleNCompare(symbol,"kurtosis",8) == 0)
1248 (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
1249 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",kurtosis);
1251 if (LocaleNCompare(symbol,"maxima",6) == 0)
1257 (void) GetImageRange(image,&minima,&maxima,exception);
1258 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",maxima);
1260 if (LocaleNCompare(symbol,"mean",4) == 0)
1266 (void) GetImageMean(image,&mean,&standard_deviation,exception);
1267 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",mean);
1269 if (LocaleNCompare(symbol,"minima",6) == 0)
1275 (void) GetImageRange(image,&minima,&maxima,exception);
1276 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",minima);
1278 if (LocaleNCompare(symbol,"skewness",8) == 0)
1284 (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
1285 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",skewness);
1287 if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
1293 (void) GetImageMean(image,&mean,&standard_deviation,exception);
1294 (void) FormatLocaleString(statistic,MaxTextExtent,"%g",
1295 standard_deviation);
1297 (void) AddValueToSplayTree(fx_info->symbols,ConstantString(key),
1298 ConstantString(statistic));
1299 return(QuantumScale*InterpretLocaleValue(statistic,(char **) NULL));
1302 static MagickRealType
1303 FxEvaluateSubexpression(FxInfo *,const PixelChannel,const ssize_t,
1304 const ssize_t,const char *,MagickRealType *,ExceptionInfo *);
1306 static inline MagickRealType FxMax(FxInfo *fx_info,const PixelChannel channel,
1307 const ssize_t x,const ssize_t y,const char *expression,
1308 ExceptionInfo *exception)
1314 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression,&beta,exception);
1315 return((MagickRealType) MagickMax((double) alpha,(double) beta));
1318 static inline MagickRealType FxMin(FxInfo *fx_info,PixelChannel channel,
1319 const ssize_t x,const ssize_t y,const char *expression,
1320 ExceptionInfo *exception)
1326 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression,&beta,exception);
1327 return((MagickRealType) MagickMin((double) alpha,(double) beta));
1330 static inline const char *FxSubexpression(const char *expression,
1331 ExceptionInfo *exception)
1340 subexpression=expression;
1341 while ((*subexpression != '\0') &&
1342 ((level != 1) || (strchr(")",(int) *subexpression) == (char *) NULL)))
1344 if (strchr("(",(int) *subexpression) != (char *) NULL)
1347 if (strchr(")",(int) *subexpression) != (char *) NULL)
1351 if (*subexpression == '\0')
1352 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1353 "UnbalancedParenthesis","`%s'",expression);
1354 return(subexpression);
1357 static MagickRealType FxGetSymbol(FxInfo *fx_info,const PixelChannel channel,
1358 const ssize_t x,const ssize_t y,const char *expression,
1359 ExceptionInfo *exception)
1363 subexpression[MaxTextExtent],
1364 symbol[MaxTextExtent];
1393 i=GetImageIndexInList(fx_info->images);
1397 if (isalpha((int) *(p+1)) == 0)
1399 if (strchr("suv",(int) *p) != (char *) NULL)
1406 i=GetImageIndexInList(fx_info->images);
1409 case 'u': i=0; break;
1410 case 'v': i=1; break;
1417 for (p++; *p != '\0'; )
1431 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1433 i=(ssize_t) (alpha+0.5);
1439 if ((isalpha((int) *(p+1)) == 0) && (*p == 'p'))
1446 for (p++; *p != '\0'; )
1460 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1471 for (p++; *p != '\0'; )
1485 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1495 length=GetImageListLength(fx_info->images);
1497 i+=(ssize_t) length;
1499 image=GetImageFromList(fx_info->images,i);
1500 if (image == (Image *) NULL)
1502 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1503 "NoSuchImage","`%s'",expression);
1506 GetPixelInfo(image,&pixel);
1507 (void) InterpolatePixelInfo(image,fx_info->view[i],image->interpolate,
1508 point.x,point.y,&pixel,exception);
1509 if ((strlen(p) > 2) &&
1510 (LocaleCompare(p,"intensity") != 0) &&
1511 (LocaleCompare(p,"luminance") != 0) &&
1512 (LocaleCompare(p,"hue") != 0) &&
1513 (LocaleCompare(p,"saturation") != 0) &&
1514 (LocaleCompare(p,"lightness") != 0))
1517 name[MaxTextExtent];
1519 (void) CopyMagickString(name,p,MaxTextExtent);
1520 for (q=name+(strlen(name)-1); q > name; q--)
1530 if ((strlen(name) > 2) &&
1531 (GetValueFromSplayTree(fx_info->symbols,name) == (const char *) NULL))
1536 color=(PixelInfo *) GetValueFromSplayTree(fx_info->colors,name);
1537 if (color != (PixelInfo *) NULL)
1543 if (QueryColorCompliance(name,AllCompliance,&pixel,fx_info->exception) != MagickFalse)
1545 (void) AddValueToSplayTree(fx_info->colors,ConstantString(name),
1546 ClonePixelInfo(&pixel));
1551 (void) CopyMagickString(symbol,p,MaxTextExtent);
1552 StripString(symbol);
1553 if (*symbol == '\0')
1557 case RedPixelChannel: return(QuantumScale*pixel.red);
1558 case GreenPixelChannel: return(QuantumScale*pixel.green);
1559 case BluePixelChannel: return(QuantumScale*pixel.blue);
1560 case BlackPixelChannel:
1562 if (image->colorspace != CMYKColorspace)
1564 (void) ThrowMagickException(exception,GetMagickModule(),
1565 OptionError,"ColorSeparatedImageRequired","`%s'",
1569 return(QuantumScale*pixel.black);
1571 case AlphaPixelChannel:
1576 if (pixel.matte == MagickFalse)
1578 alpha=(MagickRealType) (QuantumScale*pixel.alpha);
1581 case IntensityPixelChannel:
1583 return(QuantumScale*GetPixelInfoIntensity(&pixel));
1588 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1589 "UnableToParseExpression","`%s'",p);
1597 if (LocaleCompare(symbol,"a") == 0)
1598 return((MagickRealType) (QuantumScale*pixel.alpha));
1604 if (LocaleCompare(symbol,"b") == 0)
1605 return(QuantumScale*pixel.blue);
1611 if (LocaleNCompare(symbol,"channel",7) == 0)
1619 flags=ParseGeometry(symbol+7,&channel_info);
1620 if (image->colorspace == CMYKColorspace)
1623 case CyanPixelChannel:
1625 if ((flags & RhoValue) == 0)
1627 return(channel_info.rho);
1629 case MagentaPixelChannel:
1631 if ((flags & SigmaValue) == 0)
1633 return(channel_info.sigma);
1635 case YellowPixelChannel:
1637 if ((flags & XiValue) == 0)
1639 return(channel_info.xi);
1641 case BlackPixelChannel:
1643 if ((flags & PsiValue) == 0)
1645 return(channel_info.psi);
1647 case AlphaPixelChannel:
1649 if ((flags & ChiValue) == 0)
1651 return(channel_info.chi);
1658 case RedPixelChannel:
1660 if ((flags & RhoValue) == 0)
1662 return(channel_info.rho);
1664 case GreenPixelChannel:
1666 if ((flags & SigmaValue) == 0)
1668 return(channel_info.sigma);
1670 case BluePixelChannel:
1672 if ((flags & XiValue) == 0)
1674 return(channel_info.xi);
1676 case BlackPixelChannel:
1678 if ((flags & ChiValue) == 0)
1680 return(channel_info.chi);
1682 case AlphaPixelChannel:
1684 if ((flags & PsiValue) == 0)
1686 return(channel_info.psi);
1693 if (LocaleCompare(symbol,"c") == 0)
1694 return(QuantumScale*pixel.red);
1700 if (LocaleNCompare(symbol,"depth",5) == 0)
1701 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1707 if (LocaleCompare(symbol,"g") == 0)
1708 return(QuantumScale*pixel.green);
1714 if (LocaleNCompare(symbol,"kurtosis",8) == 0)
1715 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1716 if (LocaleCompare(symbol,"k") == 0)
1718 if (image->colorspace != CMYKColorspace)
1720 (void) ThrowMagickException(exception,GetMagickModule(),
1721 OptionError,"ColorSeparatedImageRequired","`%s'",
1725 return(QuantumScale*pixel.black);
1732 if (LocaleCompare(symbol,"h") == 0)
1733 return((MagickRealType) image->rows);
1734 if (LocaleCompare(symbol,"hue") == 0)
1741 ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
1750 if ((LocaleCompare(symbol,"image.depth") == 0) ||
1751 (LocaleCompare(symbol,"image.minima") == 0) ||
1752 (LocaleCompare(symbol,"image.maxima") == 0) ||
1753 (LocaleCompare(symbol,"image.mean") == 0) ||
1754 (LocaleCompare(symbol,"image.kurtosis") == 0) ||
1755 (LocaleCompare(symbol,"image.skewness") == 0) ||
1756 (LocaleCompare(symbol,"image.standard_deviation") == 0))
1757 return(FxChannelStatistics(fx_info,image,channel,symbol+6,exception));
1758 if (LocaleCompare(symbol,"image.resolution.x") == 0)
1759 return(image->x_resolution);
1760 if (LocaleCompare(symbol,"image.resolution.y") == 0)
1761 return(image->y_resolution);
1762 if (LocaleCompare(symbol,"intensity") == 0)
1763 return(QuantumScale*GetPixelInfoIntensity(&pixel));
1764 if (LocaleCompare(symbol,"i") == 0)
1765 return((MagickRealType) x);
1771 if (LocaleCompare(symbol,"j") == 0)
1772 return((MagickRealType) y);
1778 if (LocaleCompare(symbol,"lightness") == 0)
1785 ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
1789 if (LocaleCompare(symbol,"luminance") == 0)
1794 luminence=0.2126*pixel.red+0.7152*pixel.green+0.0722*pixel.blue;
1795 return(QuantumScale*luminence);
1802 if (LocaleNCompare(symbol,"maxima",6) == 0)
1803 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1804 if (LocaleNCompare(symbol,"mean",4) == 0)
1805 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1806 if (LocaleNCompare(symbol,"minima",6) == 0)
1807 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1808 if (LocaleCompare(symbol,"m") == 0)
1809 return(QuantumScale*pixel.blue);
1815 if (LocaleCompare(symbol,"n") == 0)
1816 return((MagickRealType) GetImageListLength(fx_info->images));
1822 if (LocaleCompare(symbol,"o") == 0)
1823 return(QuantumScale*pixel.alpha);
1829 if (LocaleCompare(symbol,"page.height") == 0)
1830 return((MagickRealType) image->page.height);
1831 if (LocaleCompare(symbol,"page.width") == 0)
1832 return((MagickRealType) image->page.width);
1833 if (LocaleCompare(symbol,"page.x") == 0)
1834 return((MagickRealType) image->page.x);
1835 if (LocaleCompare(symbol,"page.y") == 0)
1836 return((MagickRealType) image->page.y);
1842 if (LocaleCompare(symbol,"resolution.x") == 0)
1843 return(image->x_resolution);
1844 if (LocaleCompare(symbol,"resolution.y") == 0)
1845 return(image->y_resolution);
1846 if (LocaleCompare(symbol,"r") == 0)
1847 return(QuantumScale*pixel.red);
1853 if (LocaleCompare(symbol,"saturation") == 0)
1860 ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
1864 if (LocaleNCompare(symbol,"skewness",8) == 0)
1865 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1866 if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
1867 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1873 if (LocaleCompare(symbol,"t") == 0)
1874 return((MagickRealType) GetImageIndexInList(fx_info->images));
1880 if (LocaleCompare(symbol,"w") == 0)
1881 return((MagickRealType) image->columns);
1887 if (LocaleCompare(symbol,"y") == 0)
1888 return(QuantumScale*pixel.green);
1894 if (LocaleCompare(symbol,"z") == 0)
1899 depth=(MagickRealType) GetImageDepth(image,fx_info->exception);
1907 value=(const char *) GetValueFromSplayTree(fx_info->symbols,symbol);
1908 if (value != (const char *) NULL)
1909 return((MagickRealType) InterpretLocaleValue(value,(char **) NULL));
1910 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1911 "UnableToParseExpression","`%s'",symbol);
1915 static const char *FxOperatorPrecedence(const char *expression,
1916 ExceptionInfo *exception)
1920 UndefinedPrecedence,
1922 BitwiseComplementPrecedence,
1924 ExponentialNotationPrecedence,
1928 RelationalPrecedence,
1929 EquivalencyPrecedence,
1930 BitwiseAndPrecedence,
1931 BitwiseOrPrecedence,
1932 LogicalAndPrecedence,
1933 LogicalOrPrecedence,
1935 AssignmentPrecedence,
1955 subexpression=(const char *) NULL;
1956 target=NullPrecedence;
1957 while (*expression != '\0')
1959 precedence=UndefinedPrecedence;
1960 if ((isspace((int) ((char) *expression)) != 0) || (c == (int) '@'))
1965 switch (*expression)
1970 #if defined(MAGICKCORE_HAVE_ACOSH)
1971 if (LocaleNCompare(expression,"acosh",5) == 0)
1977 #if defined(MAGICKCORE_HAVE_ASINH)
1978 if (LocaleNCompare(expression,"asinh",5) == 0)
1984 #if defined(MAGICKCORE_HAVE_ATANH)
1985 if (LocaleNCompare(expression,"atanh",5) == 0)
1996 if ((LocaleNCompare(expression,"j0",2) == 0) ||
1997 (LocaleNCompare(expression,"j1",2) == 0))
2006 while (isxdigit((int) ((unsigned char) *(expression+1))) != 0)
2013 if ((c == (int) '{') || (c == (int) '['))
2016 if ((c == (int) '}') || (c == (int) ']'))
2019 switch ((unsigned char) *expression)
2024 precedence=BitwiseComplementPrecedence;
2030 precedence=ExponentPrecedence;
2035 if (((c != 0) && ((isdigit((int) ((char) c)) != 0) ||
2036 (strchr(")",c) != (char *) NULL))) &&
2037 (((islower((int) ((char) *expression)) != 0) ||
2038 (strchr("(",(int) *expression) != (char *) NULL)) ||
2039 ((isdigit((int) ((char) c)) == 0) &&
2040 (isdigit((int) ((char) *expression)) != 0))) &&
2041 (strchr("xy",(int) *expression) == (char *) NULL))
2042 precedence=MultiplyPrecedence;
2049 precedence=MultiplyPrecedence;
2055 if ((strchr("(+-/*%:&^|<>~,",c) == (char *) NULL) ||
2057 precedence=AdditionPrecedence;
2060 case LeftShiftOperator:
2061 case RightShiftOperator:
2063 precedence=ShiftPrecedence;
2067 case LessThanEqualOperator:
2068 case GreaterThanEqualOperator:
2071 precedence=RelationalPrecedence;
2075 case NotEqualOperator:
2077 precedence=EquivalencyPrecedence;
2082 precedence=BitwiseAndPrecedence;
2087 precedence=BitwiseOrPrecedence;
2090 case LogicalAndOperator:
2092 precedence=LogicalAndPrecedence;
2095 case LogicalOrOperator:
2097 precedence=LogicalOrPrecedence;
2100 case ExponentialNotation:
2102 precedence=ExponentialNotationPrecedence;
2108 precedence=TernaryPrecedence;
2113 precedence=AssignmentPrecedence;
2118 precedence=CommaPrecedence;
2123 precedence=SeparatorPrecedence;
2127 if ((precedence == BitwiseComplementPrecedence) ||
2128 (precedence == TernaryPrecedence) ||
2129 (precedence == AssignmentPrecedence))
2131 if (precedence > target)
2134 Right-to-left associativity.
2137 subexpression=expression;
2141 if (precedence >= target)
2144 Left-to-right associativity.
2147 subexpression=expression;
2149 if (strchr("(",(int) *expression) != (char *) NULL)
2150 expression=FxSubexpression(expression,exception);
2151 c=(int) (*expression++);
2153 return(subexpression);
2156 static MagickRealType FxEvaluateSubexpression(FxInfo *fx_info,
2157 const PixelChannel channel,const ssize_t x,const ssize_t y,
2158 const char *expression,MagickRealType *beta,ExceptionInfo *exception)
2162 subexpression[MaxTextExtent];
2172 if (exception->severity != UndefinedException)
2174 while (isspace((int) *expression) != 0)
2176 if (*expression == '\0')
2178 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
2179 "MissingExpression","`%s'",expression);
2182 *subexpression='\0';
2183 p=FxOperatorPrecedence(expression,exception);
2184 if (p != (const char *) NULL)
2186 (void) CopyMagickString(subexpression,expression,(size_t)
2188 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,beta,
2190 switch ((unsigned char) *p)
2194 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2195 *beta=(MagickRealType) (~(size_t) *beta);
2200 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2201 return(*beta == 0.0 ? 1.0 : 0.0);
2205 *beta=pow((double) alpha,(double) FxEvaluateSubexpression(fx_info,
2206 channel,x,y,++p,beta,exception));
2210 case ExponentialNotation:
2212 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2213 return(alpha*(*beta));
2217 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2220 if (exception->severity == UndefinedException)
2221 (void) ThrowMagickException(exception,GetMagickModule(),
2222 OptionError,"DivideByZero","`%s'",expression);
2225 return(alpha/(*beta));
2229 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2230 *beta=fabs(floor(((double) *beta)+0.5));
2233 (void) ThrowMagickException(exception,GetMagickModule(),
2234 OptionError,"DivideByZero","`%s'",expression);
2237 return(fmod((double) alpha,(double) *beta));
2241 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2242 return(alpha+(*beta));
2246 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2247 return(alpha-(*beta));
2249 case LeftShiftOperator:
2251 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2252 *beta=(MagickRealType) ((size_t) (alpha+0.5) << (size_t)
2256 case RightShiftOperator:
2258 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2259 *beta=(MagickRealType) ((size_t) (alpha+0.5) >> (size_t)
2265 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2266 return(alpha < *beta ? 1.0 : 0.0);
2268 case LessThanEqualOperator:
2270 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2271 return(alpha <= *beta ? 1.0 : 0.0);
2275 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2276 return(alpha > *beta ? 1.0 : 0.0);
2278 case GreaterThanEqualOperator:
2280 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2281 return(alpha >= *beta ? 1.0 : 0.0);
2285 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2286 return(fabs(alpha-(*beta)) <= MagickEpsilon ? 1.0 : 0.0);
2288 case NotEqualOperator:
2290 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2291 return(fabs(alpha-(*beta)) > MagickEpsilon ? 1.0 : 0.0);
2295 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2296 *beta=(MagickRealType) ((size_t) (alpha+0.5) & (size_t)
2302 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2303 *beta=(MagickRealType) ((size_t) (alpha+0.5) | (size_t)
2307 case LogicalAndOperator:
2309 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2310 *beta=(alpha > 0.0) && (gamma > 0.0) ? 1.0 : 0.0;
2313 case LogicalOrOperator:
2315 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2316 *beta=(alpha > 0.0) || (gamma > 0.0) ? 1.0 : 0.0;
2324 (void) CopyMagickString(subexpression,++p,MaxTextExtent);
2326 p=StringToken(":",&q);
2327 if (q == (char *) NULL)
2329 (void) ThrowMagickException(exception,GetMagickModule(),
2330 OptionError,"UnableToParseExpression","`%s'",subexpression);
2333 if (fabs((double) alpha) > MagickEpsilon)
2334 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,p,beta,exception);
2336 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,q,beta,exception);
2342 numeric[MaxTextExtent];
2345 while (isalpha((int) ((unsigned char) *q)) != 0)
2349 (void) ThrowMagickException(exception,GetMagickModule(),
2350 OptionError,"UnableToParseExpression","`%s'",subexpression);
2353 ClearMagickException(exception);
2354 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2355 (void) FormatLocaleString(numeric,MaxTextExtent,"%g",(double)
2357 (void) DeleteNodeFromSplayTree(fx_info->symbols,subexpression);
2358 (void) AddValueToSplayTree(fx_info->symbols,ConstantString(
2359 subexpression),ConstantString(numeric));
2364 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2369 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2374 gamma=alpha*FxEvaluateSubexpression(fx_info,channel,x,y,p,beta,
2380 if (strchr("(",(int) *expression) != (char *) NULL)
2382 (void) CopyMagickString(subexpression,expression+1,MaxTextExtent);
2383 subexpression[strlen(subexpression)-1]='\0';
2384 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,beta,
2388 switch (*expression)
2392 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2398 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2404 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2406 return((MagickRealType) (~(size_t) (gamma+0.5)));
2411 if (LocaleNCompare(expression,"abs",3) == 0)
2413 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2415 return((MagickRealType) fabs((double) alpha));
2417 #if defined(MAGICKCORE_HAVE_ACOSH)
2418 if (LocaleNCompare(expression,"acosh",5) == 0)
2420 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2422 return((MagickRealType) acosh((double) alpha));
2425 if (LocaleNCompare(expression,"acos",4) == 0)
2427 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2429 return((MagickRealType) acos((double) alpha));
2431 #if defined(MAGICKCORE_HAVE_J1)
2432 if (LocaleNCompare(expression,"airy",4) == 0)
2434 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2438 gamma=2.0*j1((double) (MagickPI*alpha))/(MagickPI*alpha);
2439 return(gamma*gamma);
2442 #if defined(MAGICKCORE_HAVE_ASINH)
2443 if (LocaleNCompare(expression,"asinh",5) == 0)
2445 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2447 return((MagickRealType) asinh((double) alpha));
2450 if (LocaleNCompare(expression,"asin",4) == 0)
2452 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2454 return((MagickRealType) asin((double) alpha));
2456 if (LocaleNCompare(expression,"alt",3) == 0)
2458 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2460 return(((ssize_t) alpha) & 0x01 ? -1.0 : 1.0);
2462 if (LocaleNCompare(expression,"atan2",5) == 0)
2464 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2466 return((MagickRealType) atan2((double) alpha,(double) *beta));
2468 #if defined(MAGICKCORE_HAVE_ATANH)
2469 if (LocaleNCompare(expression,"atanh",5) == 0)
2471 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2473 return((MagickRealType) atanh((double) alpha));
2476 if (LocaleNCompare(expression,"atan",4) == 0)
2478 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2480 return((MagickRealType) atan((double) alpha));
2482 if (LocaleCompare(expression,"a") == 0)
2483 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2489 if (LocaleCompare(expression,"b") == 0)
2490 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2496 if (LocaleNCompare(expression,"ceil",4) == 0)
2498 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2500 return((MagickRealType) ceil((double) alpha));
2502 if (LocaleNCompare(expression,"cosh",4) == 0)
2504 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2506 return((MagickRealType) cosh((double) alpha));
2508 if (LocaleNCompare(expression,"cos",3) == 0)
2510 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2512 return((MagickRealType) cos((double) alpha));
2514 if (LocaleCompare(expression,"c") == 0)
2515 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2521 if (LocaleNCompare(expression,"debug",5) == 0)
2526 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2528 if (fx_info->images->colorspace == CMYKColorspace)
2531 case CyanPixelChannel: type="cyan"; break;
2532 case MagentaPixelChannel: type="magenta"; break;
2533 case YellowPixelChannel: type="yellow"; break;
2534 case AlphaPixelChannel: type="opacity"; break;
2535 case BlackPixelChannel: type="black"; break;
2536 default: type="unknown"; break;
2541 case RedPixelChannel: type="red"; break;
2542 case GreenPixelChannel: type="green"; break;
2543 case BluePixelChannel: type="blue"; break;
2544 case AlphaPixelChannel: type="opacity"; break;
2545 default: type="unknown"; break;
2547 (void) CopyMagickString(subexpression,expression+6,MaxTextExtent);
2548 if (strlen(subexpression) > 1)
2549 subexpression[strlen(subexpression)-1]='\0';
2550 if (fx_info->file != (FILE *) NULL)
2551 (void) FormatLocaleFile(fx_info->file,
2552 "%s[%.20g,%.20g].%s: %s=%.*g\n",fx_info->images->filename,
2553 (double) x,(double) y,type,subexpression,GetMagickPrecision(),
2562 if (LocaleCompare(expression,"epsilon") == 0)
2563 return((MagickRealType) MagickEpsilon);
2564 if (LocaleNCompare(expression,"exp",3) == 0)
2566 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2568 return((MagickRealType) exp((double) alpha));
2570 if (LocaleCompare(expression,"e") == 0)
2571 return((MagickRealType) 2.7182818284590452354);
2577 if (LocaleNCompare(expression,"floor",5) == 0)
2579 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2581 return((MagickRealType) floor((double) alpha));
2588 if (LocaleCompare(expression,"g") == 0)
2589 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2595 if (LocaleCompare(expression,"h") == 0)
2596 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2597 if (LocaleCompare(expression,"hue") == 0)
2598 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2599 if (LocaleNCompare(expression,"hypot",5) == 0)
2601 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2603 return((MagickRealType) hypot((double) alpha,(double) *beta));
2610 if (LocaleCompare(expression,"k") == 0)
2611 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2617 if (LocaleCompare(expression,"intensity") == 0)
2618 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2619 if (LocaleNCompare(expression,"int",3) == 0)
2621 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2623 return((MagickRealType) floor(alpha));
2625 if (LocaleCompare(expression,"i") == 0)
2626 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2632 if (LocaleCompare(expression,"j") == 0)
2633 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2634 #if defined(MAGICKCORE_HAVE_J0)
2635 if (LocaleNCompare(expression,"j0",2) == 0)
2637 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2639 return((MagickRealType) j0((double) alpha));
2642 #if defined(MAGICKCORE_HAVE_J1)
2643 if (LocaleNCompare(expression,"j1",2) == 0)
2645 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2647 return((MagickRealType) j1((double) alpha));
2650 #if defined(MAGICKCORE_HAVE_J1)
2651 if (LocaleNCompare(expression,"jinc",4) == 0)
2653 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2657 gamma=(MagickRealType) (2.0*j1((double) (MagickPI*alpha))/
2667 if (LocaleNCompare(expression,"ln",2) == 0)
2669 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2671 return((MagickRealType) log((double) alpha));
2673 if (LocaleNCompare(expression,"logtwo",6) == 0)
2675 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+6,beta,
2677 return((MagickRealType) log10((double) alpha))/log10(2.0);
2679 if (LocaleNCompare(expression,"log",3) == 0)
2681 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2683 return((MagickRealType) log10((double) alpha));
2685 if (LocaleCompare(expression,"lightness") == 0)
2686 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2692 if (LocaleCompare(expression,"MaxRGB") == 0)
2693 return((MagickRealType) QuantumRange);
2694 if (LocaleNCompare(expression,"maxima",6) == 0)
2696 if (LocaleNCompare(expression,"max",3) == 0)
2697 return(FxMax(fx_info,channel,x,y,expression+3,exception));
2698 if (LocaleNCompare(expression,"minima",6) == 0)
2700 if (LocaleNCompare(expression,"min",3) == 0)
2701 return(FxMin(fx_info,channel,x,y,expression+3,exception));
2702 if (LocaleNCompare(expression,"mod",3) == 0)
2704 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2706 return((MagickRealType) fmod((double) alpha,(double) *beta));
2708 if (LocaleCompare(expression,"m") == 0)
2709 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2715 if (LocaleCompare(expression,"n") == 0)
2716 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2722 if (LocaleCompare(expression,"Opaque") == 0)
2724 if (LocaleCompare(expression,"o") == 0)
2725 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2731 if (LocaleCompare(expression,"pi") == 0)
2732 return((MagickRealType) MagickPI);
2733 if (LocaleNCompare(expression,"pow",3) == 0)
2735 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2737 return((MagickRealType) pow((double) alpha,(double) *beta));
2739 if (LocaleCompare(expression,"p") == 0)
2740 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2746 if (LocaleCompare(expression,"QuantumRange") == 0)
2747 return((MagickRealType) QuantumRange);
2748 if (LocaleCompare(expression,"QuantumScale") == 0)
2749 return((MagickRealType) QuantumScale);
2755 if (LocaleNCompare(expression,"rand",4) == 0)
2756 return((MagickRealType) GetPseudoRandomValue(fx_info->random_info));
2757 if (LocaleNCompare(expression,"round",5) == 0)
2759 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2761 return((MagickRealType) floor((double) alpha+0.5));
2763 if (LocaleCompare(expression,"r") == 0)
2764 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2770 if (LocaleCompare(expression,"saturation") == 0)
2771 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2772 if (LocaleNCompare(expression,"sign",4) == 0)
2774 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2776 return(alpha < 0.0 ? -1.0 : 1.0);
2778 if (LocaleNCompare(expression,"sinc",4) == 0)
2780 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2784 gamma=(MagickRealType) (sin((double) (MagickPI*alpha))/
2788 if (LocaleNCompare(expression,"sinh",4) == 0)
2790 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2792 return((MagickRealType) sinh((double) alpha));
2794 if (LocaleNCompare(expression,"sin",3) == 0)
2796 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2798 return((MagickRealType) sin((double) alpha));
2800 if (LocaleNCompare(expression,"sqrt",4) == 0)
2802 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2804 return((MagickRealType) sqrt((double) alpha));
2806 if (LocaleCompare(expression,"s") == 0)
2807 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2813 if (LocaleNCompare(expression,"tanh",4) == 0)
2815 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2817 return((MagickRealType) tanh((double) alpha));
2819 if (LocaleNCompare(expression,"tan",3) == 0)
2821 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2823 return((MagickRealType) tan((double) alpha));
2825 if (LocaleCompare(expression,"Transparent") == 0)
2827 if (LocaleNCompare(expression,"trunc",5) == 0)
2829 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2832 return((MagickRealType) floor((double) alpha));
2833 return((MagickRealType) ceil((double) alpha));
2835 if (LocaleCompare(expression,"t") == 0)
2836 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2842 if (LocaleCompare(expression,"u") == 0)
2843 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2849 if (LocaleCompare(expression,"v") == 0)
2850 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2856 if (LocaleCompare(expression,"w") == 0)
2857 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2863 if (LocaleCompare(expression,"y") == 0)
2864 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2870 if (LocaleCompare(expression,"z") == 0)
2871 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2877 q=(char *) expression;
2878 alpha=InterpretLocaleValue(expression,&q);
2879 if (q == expression)
2880 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2884 MagickPrivate MagickBooleanType FxEvaluateExpression(FxInfo *fx_info,
2885 MagickRealType *alpha,ExceptionInfo *exception)
2890 status=FxEvaluateChannelExpression(fx_info,GrayPixelChannel,0,0,alpha,
2895 MagickExport MagickBooleanType FxPreprocessExpression(FxInfo *fx_info,
2896 MagickRealType *alpha,ExceptionInfo *exception)
2905 fx_info->file=(FILE *) NULL;
2906 status=FxEvaluateChannelExpression(fx_info,GrayPixelChannel,0,0,alpha,
2912 MagickPrivate MagickBooleanType FxEvaluateChannelExpression(FxInfo *fx_info,
2913 const PixelChannel channel,const ssize_t x,const ssize_t y,
2914 MagickRealType *alpha,ExceptionInfo *exception)
2920 *alpha=FxEvaluateSubexpression(fx_info,channel,x,y,fx_info->expression,&beta,
2922 return(exception->severity == OptionError ? MagickFalse : MagickTrue);
2926 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2934 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2936 % FxImage() applies a mathematical expression to the specified image.
2938 % The format of the FxImage method is:
2940 % Image *FxImage(const Image *image,const char *expression,
2941 % ExceptionInfo *exception)
2943 % A description of each parameter follows:
2945 % o image: the image.
2947 % o expression: A mathematical expression.
2949 % o exception: return any errors or warnings in this structure.
2953 static FxInfo **DestroyFxThreadSet(FxInfo **fx_info)
2958 assert(fx_info != (FxInfo **) NULL);
2959 for (i=0; i < (ssize_t) GetOpenMPMaximumThreads(); i++)
2960 if (fx_info[i] != (FxInfo *) NULL)
2961 fx_info[i]=DestroyFxInfo(fx_info[i]);
2962 fx_info=(FxInfo **) RelinquishMagickMemory(fx_info);
2966 static FxInfo **AcquireFxThreadSet(const Image *image,const char *expression,
2967 ExceptionInfo *exception)
2984 number_threads=GetOpenMPMaximumThreads();
2985 fx_info=(FxInfo **) AcquireQuantumMemory(number_threads,sizeof(*fx_info));
2986 if (fx_info == (FxInfo **) NULL)
2987 return((FxInfo **) NULL);
2988 (void) ResetMagickMemory(fx_info,0,number_threads*sizeof(*fx_info));
2989 if (*expression != '@')
2990 fx_expression=ConstantString(expression);
2992 fx_expression=FileToString(expression+1,~0,exception);
2993 for (i=0; i < (ssize_t) number_threads; i++)
2995 fx_info[i]=AcquireFxInfo(image,fx_expression);
2996 if (fx_info[i] == (FxInfo *) NULL)
2997 return(DestroyFxThreadSet(fx_info));
2998 (void) FxPreprocessExpression(fx_info[i],&alpha,fx_info[i]->exception);
3000 fx_expression=DestroyString(fx_expression);
3004 MagickExport Image *FxImage(const Image *image,const char *expression,
3005 ExceptionInfo *exception)
3007 #define FxImageTag "Fx/Image"
3031 assert(image != (Image *) NULL);
3032 assert(image->signature == MagickSignature);
3033 if (image->debug != MagickFalse)
3034 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3035 fx_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
3036 if (fx_image == (Image *) NULL)
3037 return((Image *) NULL);
3038 if (SetImageStorageClass(fx_image,DirectClass,exception) == MagickFalse)
3040 fx_image=DestroyImage(fx_image);
3041 return((Image *) NULL);
3043 fx_info=AcquireFxThreadSet(image,expression,exception);
3044 if (fx_info == (FxInfo **) NULL)
3046 fx_image=DestroyImage(fx_image);
3047 ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
3049 status=FxPreprocessExpression(fx_info[0],&alpha,exception);
3050 if (status == MagickFalse)
3052 fx_image=DestroyImage(fx_image);
3053 fx_info=DestroyFxThreadSet(fx_info);
3054 return((Image *) NULL);
3061 image_view=AcquireCacheView(image);
3062 fx_view=AcquireCacheView(fx_image);
3063 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3064 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
3066 for (y=0; y < (ssize_t) fx_image->rows; y++)
3069 id = GetOpenMPThreadId();
3071 register const Quantum
3080 if (status == MagickFalse)
3082 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
3083 q=GetCacheViewAuthenticPixels(fx_view,0,y,fx_image->columns,1,exception);
3084 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
3089 for (x=0; x < (ssize_t) fx_image->columns; x++)
3094 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3106 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3107 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3108 fx_traits=GetPixelChannelMapTraits(fx_image,channel);
3109 if ((traits == UndefinedPixelTrait) ||
3110 (fx_traits == UndefinedPixelTrait))
3112 if ((fx_traits & CopyPixelTrait) != 0)
3114 SetPixelChannel(fx_image,channel,p[i],q);
3118 (void) FxEvaluateChannelExpression(fx_info[id],(PixelChannel) i,x,y,
3120 q[i]=ClampToQuantum((MagickRealType) QuantumRange*alpha);
3122 p+=GetPixelChannels(image);
3123 q+=GetPixelChannels(fx_image);
3125 if (SyncCacheViewAuthenticPixels(fx_view,exception) == MagickFalse)
3127 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3132 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3133 #pragma omp critical (MagickCore_FxImage)
3135 proceed=SetImageProgress(image,FxImageTag,progress++,image->rows);
3136 if (proceed == MagickFalse)
3140 fx_view=DestroyCacheView(fx_view);
3141 image_view=DestroyCacheView(image_view);
3142 fx_info=DestroyFxThreadSet(fx_info);
3143 if (status == MagickFalse)
3144 fx_image=DestroyImage(fx_image);
3149 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3153 % I m p l o d e I m a g e %
3157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3159 % ImplodeImage() creates a new image that is a copy of an existing
3160 % one with the image pixels "implode" by the specified percentage. It
3161 % allocates the memory necessary for the new Image structure and returns a
3162 % pointer to the new image.
3164 % The format of the ImplodeImage method is:
3166 % Image *ImplodeImage(const Image *image,const double amount,
3167 % const PixelInterpolateMethod method,ExceptionInfo *exception)
3169 % A description of each parameter follows:
3171 % o implode_image: Method ImplodeImage returns a pointer to the image
3172 % after it is implode. A null image is returned if there is a memory
3175 % o image: the image.
3177 % o amount: Define the extent of the implosion.
3179 % o method: the pixel interpolation method.
3181 % o exception: return any errors or warnings in this structure.
3184 MagickExport Image *ImplodeImage(const Image *image,const double amount,
3185 const PixelInterpolateMethod method,ExceptionInfo *exception)
3187 #define ImplodeImageTag "Implode/Image"
3213 Initialize implode image attributes.
3215 assert(image != (Image *) NULL);
3216 assert(image->signature == MagickSignature);
3217 if (image->debug != MagickFalse)
3218 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3219 assert(exception != (ExceptionInfo *) NULL);
3220 assert(exception->signature == MagickSignature);
3221 implode_image=CloneImage(image,image->columns,image->rows,MagickTrue,
3223 if (implode_image == (Image *) NULL)
3224 return((Image *) NULL);
3225 if (SetImageStorageClass(implode_image,DirectClass,exception) == MagickFalse)
3227 implode_image=DestroyImage(implode_image);
3228 return((Image *) NULL);
3230 if (implode_image->background_color.alpha != OpaqueAlpha)
3231 implode_image->matte=MagickTrue;
3233 Compute scaling factor.
3237 center.x=0.5*image->columns;
3238 center.y=0.5*image->rows;
3240 if (image->columns > image->rows)
3241 scale.y=(double) image->columns/(double) image->rows;
3243 if (image->columns < image->rows)
3245 scale.x=(double) image->rows/(double) image->columns;
3253 image_view=AcquireCacheView(image);
3254 implode_view=AcquireCacheView(implode_image);
3255 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3256 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
3258 for (y=0; y < (ssize_t) image->rows; y++)
3266 register const Quantum
3275 if (status == MagickFalse)
3277 p=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3278 q=GetCacheViewAuthenticPixels(implode_view,0,y,implode_image->columns,1,
3280 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
3285 delta.y=scale.y*(double) (y-center.y);
3286 for (x=0; x < (ssize_t) image->columns; x++)
3292 Determine if the pixel is within an ellipse.
3294 delta.x=scale.x*(double) (x-center.x);
3295 distance=delta.x*delta.x+delta.y*delta.y;
3296 if (distance >= (radius*radius))
3298 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3311 factor=pow(sin((double) (MagickPI*sqrt((double) distance)/
3312 radius/2)),-amount);
3313 status=InterpolatePixelChannels(image,image_view,implode_image,method,
3314 (double) (factor*delta.x/scale.x+center.x),(double) (factor*delta.y/
3315 scale.y+center.y),q,exception);
3317 p+=GetPixelChannels(image);
3318 q+=GetPixelChannels(implode_image);
3320 if (SyncCacheViewAuthenticPixels(implode_view,exception) == MagickFalse)
3322 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3327 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3328 #pragma omp critical (MagickCore_ImplodeImage)
3330 proceed=SetImageProgress(image,ImplodeImageTag,progress++,image->rows);
3331 if (proceed == MagickFalse)
3335 implode_view=DestroyCacheView(implode_view);
3336 image_view=DestroyCacheView(image_view);
3337 if (status == MagickFalse)
3338 implode_image=DestroyImage(implode_image);
3339 return(implode_image);
3343 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3347 % M o r p h I m a g e s %
3351 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3353 % The MorphImages() method requires a minimum of two images. The first
3354 % image is transformed into the second by a number of intervening images
3355 % as specified by frames.
3357 % The format of the MorphImage method is:
3359 % Image *MorphImages(const Image *image,const size_t number_frames,
3360 % ExceptionInfo *exception)
3362 % A description of each parameter follows:
3364 % o image: the image.
3366 % o number_frames: Define the number of in-between image to generate.
3367 % The more in-between frames, the smoother the morph.
3369 % o exception: return any errors or warnings in this structure.
3372 MagickExport Image *MorphImages(const Image *image,
3373 const size_t number_frames,ExceptionInfo *exception)
3375 #define MorphImageTag "Morph/Image"
3391 register const Image
3401 Clone first frame in sequence.
3403 assert(image != (Image *) NULL);
3404 assert(image->signature == MagickSignature);
3405 if (image->debug != MagickFalse)
3406 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3407 assert(exception != (ExceptionInfo *) NULL);
3408 assert(exception->signature == MagickSignature);
3409 morph_images=CloneImage(image,0,0,MagickTrue,exception);
3410 if (morph_images == (Image *) NULL)
3411 return((Image *) NULL);
3412 if (GetNextImageInList(image) == (Image *) NULL)
3417 for (i=1; i < (ssize_t) number_frames; i++)
3419 morph_image=CloneImage(image,0,0,MagickTrue,exception);
3420 if (morph_image == (Image *) NULL)
3422 morph_images=DestroyImageList(morph_images);
3423 return((Image *) NULL);
3425 AppendImageToList(&morph_images,morph_image);
3426 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3431 proceed=SetImageProgress(image,MorphImageTag,(MagickOffsetType) i,
3433 if (proceed == MagickFalse)
3437 return(GetFirstImageInList(morph_images));
3440 Morph image sequence.
3445 for ( ; GetNextImageInList(next) != (Image *) NULL; next=GetNextImageInList(next))
3447 for (i=0; i < (ssize_t) number_frames; i++)
3453 beta=(MagickRealType) (i+1.0)/(MagickRealType) (number_frames+1.0);
3455 morph_image=ResizeImage(next,(size_t) (alpha*next->columns+beta*
3456 GetNextImageInList(next)->columns+0.5),(size_t) (alpha*
3457 next->rows+beta*GetNextImageInList(next)->rows+0.5),
3458 next->filter,next->blur,exception);
3459 if (morph_image == (Image *) NULL)
3461 morph_images=DestroyImageList(morph_images);
3462 return((Image *) NULL);
3464 if (SetImageStorageClass(morph_image,DirectClass,exception) == MagickFalse)
3466 morph_image=DestroyImage(morph_image);
3467 return((Image *) NULL);
3469 AppendImageToList(&morph_images,morph_image);
3470 morph_images=GetLastImageInList(morph_images);
3471 morph_image=ResizeImage(GetNextImageInList(next),morph_images->columns,
3472 morph_images->rows,GetNextImageInList(next)->filter,
3473 GetNextImageInList(next)->blur,exception);
3474 if (morph_image == (Image *) NULL)
3476 morph_images=DestroyImageList(morph_images);
3477 return((Image *) NULL);
3479 image_view=AcquireCacheView(morph_image);
3480 morph_view=AcquireCacheView(morph_images);
3481 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3482 #pragma omp parallel for schedule(dynamic,4) shared(status)
3484 for (y=0; y < (ssize_t) morph_images->rows; y++)
3489 register const Quantum
3498 if (status == MagickFalse)
3500 p=GetCacheViewVirtualPixels(image_view,0,y,morph_image->columns,1,
3502 q=GetCacheViewAuthenticPixels(morph_view,0,y,morph_images->columns,1,
3504 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
3509 for (x=0; x < (ssize_t) morph_images->columns; x++)
3511 SetPixelRed(morph_images,ClampToQuantum(alpha*
3512 GetPixelRed(morph_images,q)+beta*GetPixelRed(morph_image,p)),q);
3513 SetPixelGreen(morph_images,ClampToQuantum(alpha*
3514 GetPixelGreen(morph_images,q)+beta*GetPixelGreen(morph_image,p)),q);
3515 SetPixelBlue(morph_images,ClampToQuantum(alpha*
3516 GetPixelBlue(morph_images,q)+beta*GetPixelBlue(morph_image,p)),q);
3517 SetPixelAlpha(morph_images,ClampToQuantum(alpha*
3518 GetPixelAlpha(morph_images,q)+beta*GetPixelAlpha(morph_image,p)),q);
3519 if ((morph_image->colorspace == CMYKColorspace) &&
3520 (morph_images->colorspace == CMYKColorspace))
3521 SetPixelBlack(morph_images,ClampToQuantum(alpha*
3522 GetPixelBlack(morph_images,q)+beta*GetPixelBlack(morph_image,p)),
3524 p+=GetPixelChannels(morph_image);
3525 q+=GetPixelChannels(morph_images);
3527 sync=SyncCacheViewAuthenticPixels(morph_view,exception);
3528 if (sync == MagickFalse)
3531 morph_view=DestroyCacheView(morph_view);
3532 image_view=DestroyCacheView(image_view);
3533 morph_image=DestroyImage(morph_image);
3535 if (i < (ssize_t) number_frames)
3538 Clone last frame in sequence.
3540 morph_image=CloneImage(GetNextImageInList(next),0,0,MagickTrue,exception);
3541 if (morph_image == (Image *) NULL)
3543 morph_images=DestroyImageList(morph_images);
3544 return((Image *) NULL);
3546 AppendImageToList(&morph_images,morph_image);
3547 morph_images=GetLastImageInList(morph_images);
3548 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3553 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3554 #pragma omp critical (MagickCore_MorphImages)
3556 proceed=SetImageProgress(image,MorphImageTag,scene,
3557 GetImageListLength(image));
3558 if (proceed == MagickFalse)
3563 if (GetNextImageInList(next) != (Image *) NULL)
3565 morph_images=DestroyImageList(morph_images);
3566 return((Image *) NULL);
3568 return(GetFirstImageInList(morph_images));
3572 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3576 % P l a s m a I m a g e %
3580 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3582 % PlasmaImage() initializes an image with plasma fractal values. The image
3583 % must be initialized with a base color and the random number generator
3584 % seeded before this method is called.
3586 % The format of the PlasmaImage method is:
3588 % MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
3589 % size_t attenuate,size_t depth,ExceptionInfo *exception)
3591 % A description of each parameter follows:
3593 % o image: the image.
3595 % o segment: Define the region to apply plasma fractals values.
3597 % o attenuate: Define the plasma attenuation factor.
3599 % o depth: Limit the plasma recursion depth.
3601 % o exception: return any errors or warnings in this structure.
3605 static inline Quantum PlasmaPixel(RandomInfo *random_info,
3606 const MagickRealType pixel,const MagickRealType noise)
3611 plasma=ClampToQuantum(pixel+noise*GetPseudoRandomValue(random_info)-
3616 static MagickBooleanType PlasmaImageProxy(Image *image,CacheView *image_view,
3617 CacheView *u_view,CacheView *v_view,RandomInfo *random_info,
3618 const SegmentInfo *segment,size_t attenuate,size_t depth,
3619 ExceptionInfo *exception)
3630 register const Quantum
3646 if (((segment->x2-segment->x1) == 0.0) && ((segment->y2-segment->y1) == 0.0))
3654 Divide the area into quadrants and recurse.
3658 x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
3659 y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
3660 local_info=(*segment);
3661 local_info.x2=(double) x_mid;
3662 local_info.y2=(double) y_mid;
3663 (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
3664 &local_info,attenuate,depth,exception);
3665 local_info=(*segment);
3666 local_info.y1=(double) y_mid;
3667 local_info.x2=(double) x_mid;
3668 (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
3669 &local_info,attenuate,depth,exception);
3670 local_info=(*segment);
3671 local_info.x1=(double) x_mid;
3672 local_info.y2=(double) y_mid;
3673 (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
3674 &local_info,attenuate,depth,exception);
3675 local_info=(*segment);
3676 local_info.x1=(double) x_mid;
3677 local_info.y1=(double) y_mid;
3678 return(PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
3679 &local_info,attenuate,depth,exception));
3681 x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
3682 y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
3683 if ((segment->x1 == (double) x_mid) && (segment->x2 == (double) x_mid) &&
3684 (segment->y1 == (double) y_mid) && (segment->y2 == (double) y_mid))
3685 return(MagickFalse);
3687 Average pixels and apply plasma.
3689 plasma=(MagickRealType) QuantumRange/(2.0*attenuate);
3690 if ((segment->x1 != (double) x_mid) || (segment->x2 != (double) x_mid))
3695 x=(ssize_t) ceil(segment->x1-0.5);
3696 u=GetCacheViewVirtualPixels(u_view,x,(ssize_t) ceil(segment->y1-0.5),
3698 v=GetCacheViewVirtualPixels(v_view,x,(ssize_t) ceil(segment->y2-0.5),
3700 q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
3701 if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
3702 (q == (Quantum *) NULL))
3704 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3706 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3707 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3708 if (traits == UndefinedPixelTrait)
3710 q[i]=PlasmaPixel(random_info,(u[channel]+v[channel])/2.0,plasma);
3712 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3713 if (segment->x1 != segment->x2)
3718 x=(ssize_t) ceil(segment->x2-0.5);
3719 u=GetCacheViewVirtualPixels(u_view,x,(ssize_t) ceil(segment->y1-0.5),
3721 v=GetCacheViewVirtualPixels(v_view,x,(ssize_t) ceil(segment->y2-0.5),
3723 q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
3724 if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
3725 (q == (Quantum *) NULL))
3727 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3729 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3730 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3731 if (traits == UndefinedPixelTrait)
3733 q[i]=PlasmaPixel(random_info,(u[channel]+v[channel])/2.0,plasma);
3735 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3738 if ((segment->y1 != (double) y_mid) || (segment->y2 != (double) y_mid))
3740 if ((segment->x1 != (double) x_mid) || (segment->y2 != (double) y_mid))
3745 y=(ssize_t) ceil(segment->y2-0.5);
3746 u=GetCacheViewVirtualPixels(u_view,(ssize_t) ceil(segment->x1-0.5),y,
3748 v=GetCacheViewVirtualPixels(v_view,(ssize_t) ceil(segment->x2-0.5),y,
3750 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
3751 if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
3752 (q == (Quantum *) NULL))
3754 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3756 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3757 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3758 if (traits == UndefinedPixelTrait)
3760 q[i]=PlasmaPixel(random_info,(u[channel]+v[channel])/2.0,plasma);
3762 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3764 if (segment->y1 != segment->y2)
3769 y=(ssize_t) ceil(segment->y1-0.5);
3770 u=GetCacheViewVirtualPixels(u_view,(ssize_t) ceil(segment->x1-0.5),y,
3772 v=GetCacheViewVirtualPixels(v_view,(ssize_t) ceil(segment->x2-0.5),y,
3774 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
3775 if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
3776 (q == (Quantum *) NULL))
3778 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3780 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3781 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3782 if (traits == UndefinedPixelTrait)
3784 q[i]=PlasmaPixel(random_info,(u[channel]+v[channel])/2.0,plasma);
3786 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3789 if ((segment->x1 != segment->x2) || (segment->y1 != segment->y2))
3794 x=(ssize_t) ceil(segment->x1-0.5);
3795 y=(ssize_t) ceil(segment->y1-0.5);
3796 u=GetCacheViewVirtualPixels(u_view,x,y,1,1,exception);
3797 x=(ssize_t) ceil(segment->x2-0.5);
3798 y=(ssize_t) ceil(segment->y2-0.5);
3799 v=GetCacheViewVirtualPixels(v_view,x,y,1,1,exception);
3800 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y_mid,1,1,exception);
3801 if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
3802 (q == (Quantum *) NULL))
3804 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
3806 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
3807 channel=GetPixelChannelMapChannel(image,(PixelChannel) i);
3808 if (traits == UndefinedPixelTrait)
3810 q[i]=PlasmaPixel(random_info,(u[channel]+v[channel])/2.0,plasma);
3812 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3814 if (((segment->x2-segment->x1) < 3.0) && ((segment->y2-segment->y1) < 3.0))
3816 return(MagickFalse);
3819 MagickExport MagickBooleanType PlasmaImage(Image *image,
3820 const SegmentInfo *segment,size_t attenuate,size_t depth,
3821 ExceptionInfo *exception)
3834 if (image->debug != MagickFalse)
3835 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3836 assert(image != (Image *) NULL);
3837 assert(image->signature == MagickSignature);
3838 if (image->debug != MagickFalse)
3839 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3840 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
3841 return(MagickFalse);
3842 image_view=AcquireCacheView(image);
3843 u_view=AcquireCacheView(image);
3844 v_view=AcquireCacheView(image);
3845 random_info=AcquireRandomInfo();
3846 status=PlasmaImageProxy(image,image_view,u_view,v_view,random_info,segment,
3847 attenuate,depth,exception);
3848 random_info=DestroyRandomInfo(random_info);
3849 v_view=DestroyCacheView(v_view);
3850 u_view=DestroyCacheView(u_view);
3851 image_view=DestroyCacheView(image_view);
3856 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3860 % P o l a r o i d I m a g e %
3864 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3866 % PolaroidImage() simulates a Polaroid picture.
3868 % The format of the AnnotateImage method is:
3870 % Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
3871 % const double angle,const PixelInterpolateMethod method,
3872 % ExceptionInfo exception)
3874 % A description of each parameter follows:
3876 % o image: the image.
3878 % o draw_info: the draw info.
3880 % o angle: Apply the effect along this angle.
3882 % o method: the pixel interpolation method.
3884 % o exception: return any errors or warnings in this structure.
3887 MagickExport Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
3888 const double angle,const PixelInterpolateMethod method,
3889 ExceptionInfo *exception)
3910 Simulate a Polaroid picture.
3912 assert(image != (Image *) NULL);
3913 assert(image->signature == MagickSignature);
3914 if (image->debug != MagickFalse)
3915 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3916 assert(exception != (ExceptionInfo *) NULL);
3917 assert(exception->signature == MagickSignature);
3918 quantum=(ssize_t) MagickMax(MagickMax((double) image->columns,(double)
3919 image->rows)/25.0,10.0);
3920 height=image->rows+2*quantum;
3921 caption_image=(Image *) NULL;
3922 value=GetImageProperty(image,"caption",exception);
3923 if (value != (const char *) NULL)
3927 geometry[MaxTextExtent];
3942 Generate caption image.
3944 caption_image=CloneImage(image,image->columns,1,MagickTrue,exception);
3945 if (caption_image == (Image *) NULL)
3946 return((Image *) NULL);
3947 annotate_info=CloneDrawInfo((const ImageInfo *) NULL,draw_info);
3948 caption=InterpretImageProperties((ImageInfo *) NULL,(Image *) image,
3950 (void) CloneString(&annotate_info->text,caption);
3951 count=FormatMagickCaption(caption_image,annotate_info,MagickTrue,&metrics,
3952 &caption,exception);
3953 status=SetImageExtent(caption_image,image->columns,(size_t)
3954 ((count+1)*(metrics.ascent-metrics.descent)+0.5),exception);
3955 if (status == MagickFalse)
3956 caption_image=DestroyImage(caption_image);
3959 caption_image->background_color=image->border_color;
3960 (void) SetImageBackgroundColor(caption_image,exception);
3961 (void) CloneString(&annotate_info->text,caption);
3962 (void) FormatLocaleString(geometry,MaxTextExtent,"+0+%g",
3964 if (annotate_info->gravity == UndefinedGravity)
3965 (void) CloneString(&annotate_info->geometry,AcquireString(
3967 (void) AnnotateImage(caption_image,annotate_info,exception);
3968 height+=caption_image->rows;
3970 annotate_info=DestroyDrawInfo(annotate_info);
3971 caption=DestroyString(caption);
3973 picture_image=CloneImage(image,image->columns+2*quantum,height,MagickTrue,
3975 if (picture_image == (Image *) NULL)
3977 if (caption_image != (Image *) NULL)
3978 caption_image=DestroyImage(caption_image);
3979 return((Image *) NULL);
3981 picture_image->background_color=image->border_color;
3982 (void) SetImageBackgroundColor(picture_image,exception);
3983 (void) CompositeImage(picture_image,OverCompositeOp,image,quantum,quantum,
3985 if (caption_image != (Image *) NULL)
3987 (void) CompositeImage(picture_image,OverCompositeOp,caption_image,
3988 quantum,(ssize_t) (image->rows+3*quantum/2),exception);
3989 caption_image=DestroyImage(caption_image);
3991 (void) QueryColorCompliance("none",AllCompliance,
3992 &picture_image->background_color,exception);
3993 (void) SetImageAlphaChannel(picture_image,OpaqueAlphaChannel,exception);
3994 rotate_image=RotateImage(picture_image,90.0,exception);
3995 picture_image=DestroyImage(picture_image);
3996 if (rotate_image == (Image *) NULL)
3997 return((Image *) NULL);
3998 picture_image=rotate_image;
3999 bend_image=WaveImage(picture_image,0.01*picture_image->rows,2.0*
4000 picture_image->columns,method,exception);
4001 picture_image=DestroyImage(picture_image);
4002 if (bend_image == (Image *) NULL)
4003 return((Image *) NULL);
4004 picture_image=bend_image;
4005 rotate_image=RotateImage(picture_image,-90.0,exception);
4006 picture_image=DestroyImage(picture_image);
4007 if (rotate_image == (Image *) NULL)
4008 return((Image *) NULL);
4009 picture_image=rotate_image;
4010 picture_image->background_color=image->background_color;
4011 polaroid_image=ShadowImage(picture_image,80.0,2.0,quantum/3,quantum/3,
4013 if (polaroid_image == (Image *) NULL)
4015 picture_image=DestroyImage(picture_image);
4016 return(picture_image);
4018 flop_image=FlopImage(polaroid_image,exception);
4019 polaroid_image=DestroyImage(polaroid_image);
4020 if (flop_image == (Image *) NULL)
4022 picture_image=DestroyImage(picture_image);
4023 return(picture_image);
4025 polaroid_image=flop_image;
4026 (void) CompositeImage(polaroid_image,OverCompositeOp,picture_image,
4027 (ssize_t) (-0.01*picture_image->columns/2.0),0L,exception);
4028 picture_image=DestroyImage(picture_image);
4029 (void) QueryColorCompliance("none",AllCompliance,
4030 &polaroid_image->background_color,exception);
4031 rotate_image=RotateImage(polaroid_image,angle,exception);
4032 polaroid_image=DestroyImage(polaroid_image);
4033 if (rotate_image == (Image *) NULL)
4034 return((Image *) NULL);
4035 polaroid_image=rotate_image;
4036 trim_image=TrimImage(polaroid_image,exception);
4037 polaroid_image=DestroyImage(polaroid_image);
4038 if (trim_image == (Image *) NULL)
4039 return((Image *) NULL);
4040 polaroid_image=trim_image;
4041 return(polaroid_image);
4045 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4049 % S e p i a T o n e I m a g e %
4053 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4055 % MagickSepiaToneImage() applies a special effect to the image, similar to the
4056 % effect achieved in a photo darkroom by sepia toning. Threshold ranges from
4057 % 0 to QuantumRange and is a measure of the extent of the sepia toning. A
4058 % threshold of 80% is a good starting point for a reasonable tone.
4060 % The format of the SepiaToneImage method is:
4062 % Image *SepiaToneImage(const Image *image,const double threshold,
4063 % ExceptionInfo *exception)
4065 % A description of each parameter follows:
4067 % o image: the image.
4069 % o threshold: the tone threshold.
4071 % o exception: return any errors or warnings in this structure.
4074 MagickExport Image *SepiaToneImage(const Image *image,const double threshold,
4075 ExceptionInfo *exception)
4077 #define SepiaToneImageTag "SepiaTone/Image"
4096 Initialize sepia-toned image attributes.
4098 assert(image != (const Image *) NULL);
4099 assert(image->signature == MagickSignature);
4100 if (image->debug != MagickFalse)
4101 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4102 assert(exception != (ExceptionInfo *) NULL);
4103 assert(exception->signature == MagickSignature);
4104 sepia_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
4105 if (sepia_image == (Image *) NULL)
4106 return((Image *) NULL);
4107 if (SetImageStorageClass(sepia_image,DirectClass,exception) == MagickFalse)
4109 sepia_image=DestroyImage(sepia_image);
4110 return((Image *) NULL);
4113 Tone each row of the image.
4117 image_view=AcquireCacheView(image);
4118 sepia_view=AcquireCacheView(sepia_image);
4119 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4120 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4122 for (y=0; y < (ssize_t) image->rows; y++)
4124 register const Quantum
4133 if (status == MagickFalse)
4135 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
4136 q=QueueCacheViewAuthenticPixels(sepia_view,0,y,sepia_image->columns,1,
4138 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
4143 for (x=0; x < (ssize_t) image->columns; x++)
4149 intensity=(MagickRealType) GetPixelIntensity(image,p);
4150 tone=intensity > threshold ? (MagickRealType) QuantumRange : intensity+
4151 (MagickRealType) QuantumRange-threshold;
4152 SetPixelRed(sepia_image,ClampToQuantum(tone),q);
4153 tone=intensity > (7.0*threshold/6.0) ? (MagickRealType) QuantumRange :
4154 intensity+(MagickRealType) QuantumRange-7.0*threshold/6.0;
4155 SetPixelGreen(sepia_image,ClampToQuantum(tone),q);
4156 tone=intensity < (threshold/6.0) ? 0 : intensity-threshold/6.0;
4157 SetPixelBlue(sepia_image,ClampToQuantum(tone),q);
4159 if ((MagickRealType) GetPixelGreen(image,q) < tone)
4160 SetPixelGreen(sepia_image,ClampToQuantum(tone),q);
4161 if ((MagickRealType) GetPixelBlue(image,q) < tone)
4162 SetPixelBlue(sepia_image,ClampToQuantum(tone),q);
4163 p+=GetPixelChannels(image);
4164 q+=GetPixelChannels(sepia_image);
4166 if (SyncCacheViewAuthenticPixels(sepia_view,exception) == MagickFalse)
4168 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4173 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4174 #pragma omp critical (MagickCore_SepiaToneImage)
4176 proceed=SetImageProgress(image,SepiaToneImageTag,progress++,
4178 if (proceed == MagickFalse)
4182 sepia_view=DestroyCacheView(sepia_view);
4183 image_view=DestroyCacheView(image_view);
4184 (void) NormalizeImage(sepia_image,exception);
4185 (void) ContrastImage(sepia_image,MagickTrue,exception);
4186 if (status == MagickFalse)
4187 sepia_image=DestroyImage(sepia_image);
4188 return(sepia_image);
4192 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4196 % S h a d o w I m a g e %
4200 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4202 % ShadowImage() simulates a shadow from the specified image and returns it.
4204 % The format of the ShadowImage method is:
4206 % Image *ShadowImage(const Image *image,const double opacity,
4207 % const double sigma,const ssize_t x_offset,const ssize_t y_offset,
4208 % ExceptionInfo *exception)
4210 % A description of each parameter follows:
4212 % o image: the image.
4214 % o opacity: percentage transparency.
4216 % o sigma: the standard deviation of the Gaussian, in pixels.
4218 % o x_offset: the shadow x-offset.
4220 % o y_offset: the shadow y-offset.
4222 % o exception: return any errors or warnings in this structure.
4225 MagickExport Image *ShadowImage(const Image *image,const double opacity,
4226 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
4227 ExceptionInfo *exception)
4229 #define ShadowImageTag "Shadow/Image"
4242 assert(image != (Image *) NULL);
4243 assert(image->signature == MagickSignature);
4244 if (image->debug != MagickFalse)
4245 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4246 assert(exception != (ExceptionInfo *) NULL);
4247 assert(exception->signature == MagickSignature);
4248 clone_image=CloneImage(image,0,0,MagickTrue,exception);
4249 if (clone_image == (Image *) NULL)
4250 return((Image *) NULL);
4251 (void) SetImageVirtualPixelMethod(clone_image,EdgeVirtualPixelMethod);
4252 clone_image->compose=OverCompositeOp;
4253 border_info.width=(size_t) floor(2.0*sigma+0.5);
4254 border_info.height=(size_t) floor(2.0*sigma+0.5);
4257 (void) QueryColorCompliance("none",AllCompliance,&clone_image->border_color,
4259 border_image=BorderImage(clone_image,&border_info,image->compose,exception);
4260 clone_image=DestroyImage(clone_image);
4261 if (border_image == (Image *) NULL)
4262 return((Image *) NULL);
4263 if (border_image->matte == MagickFalse)
4264 (void) SetImageAlphaChannel(border_image,OpaqueAlphaChannel,exception);
4268 (void) SetImageBackgroundColor(border_image,exception);
4269 channel_mask=SetPixelChannelMask(border_image,AlphaChannel);
4270 shadow_image=BlurImage(border_image,0.0,sigma,image->bias,exception);
4271 (void) SetPixelChannelMap(border_image,channel_mask);
4272 border_image=DestroyImage(border_image);
4273 if (shadow_image == (Image *) NULL)
4274 return((Image *) NULL);
4275 if (shadow_image->page.width == 0)
4276 shadow_image->page.width=shadow_image->columns;
4277 if (shadow_image->page.height == 0)
4278 shadow_image->page.height=shadow_image->rows;
4279 shadow_image->page.width+=x_offset-(ssize_t) border_info.width;
4280 shadow_image->page.height+=y_offset-(ssize_t) border_info.height;
4281 shadow_image->page.x+=x_offset-(ssize_t) border_info.width;
4282 shadow_image->page.y+=y_offset-(ssize_t) border_info.height;
4283 return(shadow_image);
4287 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4291 % S k e t c h I m a g e %
4295 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4297 % SketchImage() simulates a pencil sketch. We convolve the image with a
4298 % Gaussian operator of the given radius and standard deviation (sigma). For
4299 % reasonable results, radius should be larger than sigma. Use a radius of 0
4300 % and SketchImage() selects a suitable radius for you. Angle gives the angle
4303 % The format of the SketchImage method is:
4305 % Image *SketchImage(const Image *image,const double radius,
4306 % const double sigma,const double angle,const double bias,
4307 % ExceptionInfo *exception)
4309 % A description of each parameter follows:
4311 % o image: the image.
4313 % o radius: the radius of the Gaussian, in pixels, not counting the
4316 % o sigma: the standard deviation of the Gaussian, in pixels.
4318 % o angle: apply the effect along this angle.
4322 % o exception: return any errors or warnings in this structure.
4325 MagickExport Image *SketchImage(const Image *image,const double radius,
4326 const double sigma,const double angle,const double bias,
4327 ExceptionInfo *exception)
4343 **restrict random_info;
4351 random_image=CloneImage(image,image->columns << 1,image->rows << 1,
4352 MagickTrue,exception);
4353 if (random_image == (Image *) NULL)
4354 return((Image *) NULL);
4356 random_info=AcquireRandomInfoThreadSet();
4357 random_view=AcquireCacheView(random_image);
4358 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4359 #pragma omp parallel for schedule(dynamic,4) shared(status)
4361 for (y=0; y < (ssize_t) random_image->rows; y++)
4364 id = GetOpenMPThreadId();
4372 if (status == MagickFalse)
4374 q=QueueCacheViewAuthenticPixels(random_view,0,y,random_image->columns,1,
4376 if (q == (Quantum *) NULL)
4381 for (x=0; x < (ssize_t) random_image->columns; x++)
4389 value=GetPseudoRandomValue(random_info[id]);
4390 for (i=0; i < (ssize_t) GetPixelChannels(random_image); i++)
4395 traits=GetPixelChannelMapTraits(random_image,(PixelChannel) i);
4396 if (traits == UndefinedPixelTrait)
4398 q[i]=ClampToQuantum(QuantumRange*value);
4400 q+=GetPixelChannels(random_image);
4402 if (SyncCacheViewAuthenticPixels(random_view,exception) == MagickFalse)
4405 random_view=DestroyCacheView(random_view);
4406 random_info=DestroyRandomInfoThreadSet(random_info);
4407 if (status == MagickFalse)
4409 random_image=DestroyImage(random_image);
4410 return(random_image);
4412 blur_image=MotionBlurImage(random_image,radius,sigma,angle,bias,exception);
4413 random_image=DestroyImage(random_image);
4414 if (blur_image == (Image *) NULL)
4415 return((Image *) NULL);
4416 dodge_image=EdgeImage(blur_image,radius,sigma,exception);
4417 blur_image=DestroyImage(blur_image);
4418 if (dodge_image == (Image *) NULL)
4419 return((Image *) NULL);
4420 (void) NormalizeImage(dodge_image,exception);
4421 (void) NegateImage(dodge_image,MagickFalse,exception);
4422 (void) TransformImage(&dodge_image,(char *) NULL,"50%",exception);
4423 sketch_image=CloneImage(image,0,0,MagickTrue,exception);
4424 if (sketch_image == (Image *) NULL)
4426 dodge_image=DestroyImage(dodge_image);
4427 return((Image *) NULL);
4429 (void) CompositeImage(sketch_image,ColorDodgeCompositeOp,dodge_image,0,0,
4431 dodge_image=DestroyImage(dodge_image);
4432 blend_image=CloneImage(image,0,0,MagickTrue,exception);
4433 if (blend_image == (Image *) NULL)
4435 sketch_image=DestroyImage(sketch_image);
4436 return((Image *) NULL);
4438 (void) SetImageArtifact(blend_image,"compose:args","20x80");
4439 (void) CompositeImage(sketch_image,BlendCompositeOp,blend_image,0,0,
4441 blend_image=DestroyImage(blend_image);
4442 return(sketch_image);
4446 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4450 % S o l a r i z e I m a g e %
4454 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4456 % SolarizeImage() applies a special effect to the image, similar to the effect
4457 % achieved in a photo darkroom by selectively exposing areas of photo
4458 % sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a
4459 % measure of the extent of the solarization.
4461 % The format of the SolarizeImage method is:
4463 % MagickBooleanType SolarizeImage(Image *image,const double threshold,
4464 % ExceptionInfo *exception)
4466 % A description of each parameter follows:
4468 % o image: the image.
4470 % o threshold: Define the extent of the solarization.
4472 % o exception: return any errors or warnings in this structure.
4475 MagickExport MagickBooleanType SolarizeImage(Image *image,
4476 const double threshold,ExceptionInfo *exception)
4478 #define SolarizeImageTag "Solarize/Image"
4492 assert(image != (Image *) NULL);
4493 assert(image->signature == MagickSignature);
4494 if (image->debug != MagickFalse)
4495 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4496 if (image->storage_class == PseudoClass)
4504 for (i=0; i < (ssize_t) image->colors; i++)
4506 if ((MagickRealType) image->colormap[i].red > threshold)
4507 image->colormap[i].red=(Quantum) QuantumRange-image->colormap[i].red;
4508 if ((MagickRealType) image->colormap[i].green > threshold)
4509 image->colormap[i].green=(Quantum) QuantumRange-
4510 image->colormap[i].green;
4511 if ((MagickRealType) image->colormap[i].blue > threshold)
4512 image->colormap[i].blue=(Quantum) QuantumRange-
4513 image->colormap[i].blue;
4521 image_view=AcquireCacheView(image);
4522 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4523 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4525 for (y=0; y < (ssize_t) image->rows; y++)
4533 if (status == MagickFalse)
4535 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
4536 if (q == (Quantum *) NULL)
4541 for (x=0; x < (ssize_t) image->columns; x++)
4546 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
4551 traits=GetPixelChannelMapTraits(image,(PixelChannel) i);
4552 if ((traits == UndefinedPixelTrait) ||
4553 ((traits & CopyPixelTrait) != 0))
4555 if ((MagickRealType) q[i] > threshold)
4556 q[i]=QuantumRange-q[i];
4558 q+=GetPixelChannels(image);
4560 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4562 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4567 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4568 #pragma omp critical (MagickCore_SolarizeImage)
4570 proceed=SetImageProgress(image,SolarizeImageTag,progress++,image->rows);
4571 if (proceed == MagickFalse)
4575 image_view=DestroyCacheView(image_view);
4580 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4584 % S t e g a n o I m a g e %
4588 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4590 % SteganoImage() hides a digital watermark within the image. Recover
4591 % the hidden watermark later to prove that the authenticity of an image.
4592 % Offset defines the start position within the image to hide the watermark.
4594 % The format of the SteganoImage method is:
4596 % Image *SteganoImage(const Image *image,Image *watermark,
4597 % ExceptionInfo *exception)
4599 % A description of each parameter follows:
4601 % o image: the image.
4603 % o watermark: the watermark image.
4605 % o exception: return any errors or warnings in this structure.
4608 MagickExport Image *SteganoImage(const Image *image,const Image *watermark,
4609 ExceptionInfo *exception)
4611 #define GetBit(alpha,i) ((((size_t) (alpha) >> (size_t) (i)) & 0x01) != 0)
4612 #define SetBit(alpha,i,set) (Quantum) ((set) != 0 ? (size_t) (alpha) \
4613 | (one << (size_t) (i)) : (size_t) (alpha) & ~(one << (size_t) (i)))
4614 #define SteganoImageTag "Stegano/Image"
4649 Initialize steganographic image attributes.
4651 assert(image != (const Image *) NULL);
4652 assert(image->signature == MagickSignature);
4653 if (image->debug != MagickFalse)
4654 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4655 assert(watermark != (const Image *) NULL);
4656 assert(watermark->signature == MagickSignature);
4657 assert(exception != (ExceptionInfo *) NULL);
4658 assert(exception->signature == MagickSignature);
4660 stegano_image=CloneImage(image,0,0,MagickTrue,exception);
4661 if (stegano_image == (Image *) NULL)
4662 return((Image *) NULL);
4663 if (SetImageStorageClass(stegano_image,DirectClass,exception) == MagickFalse)
4665 stegano_image=DestroyImage(stegano_image);
4666 return((Image *) NULL);
4668 stegano_image->depth=MAGICKCORE_QUANTUM_DEPTH;
4670 Hide watermark in low-order bits of image.
4675 depth=stegano_image->depth;
4678 watermark_view=AcquireCacheView(watermark);
4679 stegano_view=AcquireCacheView(stegano_image);
4680 for (i=(ssize_t) depth-1; (i >= 0) && (j < (ssize_t) depth); i--)
4682 for (y=0; (y < (ssize_t) watermark->rows) && (j < (ssize_t) depth); y++)
4684 for (x=0; (x < (ssize_t) watermark->columns) && (j < (ssize_t) depth); x++)
4687 virtual_pixel[CompositePixelChannel];
4689 (void) GetOneCacheViewVirtualPixel(watermark_view,x,y,virtual_pixel,
4691 pixel.red=(double) virtual_pixel[RedPixelChannel];
4692 pixel.green=(double) virtual_pixel[GreenPixelChannel];
4693 pixel.blue=(double) virtual_pixel[BluePixelChannel];
4694 pixel.alpha=(double) virtual_pixel[AlphaPixelChannel];
4695 if ((k/(ssize_t) stegano_image->columns) >= (ssize_t) stegano_image->rows)
4697 q=GetCacheViewAuthenticPixels(stegano_view,k % (ssize_t)
4698 stegano_image->columns,k/(ssize_t) stegano_image->columns,1,1,
4700 if (q == (Quantum *) NULL)
4706 SetPixelRed(image,SetBit(GetPixelRed(image,q),j,GetBit(
4707 GetPixelInfoIntensity(&pixel),i)),q);
4712 SetPixelGreen(image,SetBit(GetPixelGreen(image,q),j,GetBit(
4713 GetPixelInfoIntensity(&pixel),i)),q);
4718 SetPixelBlue(image,SetBit(GetPixelBlue(image,q),j,GetBit(
4719 GetPixelInfoIntensity(&pixel),i)),q);
4723 if (SyncCacheViewAuthenticPixels(stegano_view,exception) == MagickFalse)
4729 if (k == (ssize_t) (stegano_image->columns*stegano_image->columns))
4731 if (k == image->offset)
4735 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4740 proceed=SetImageProgress(image,SteganoImageTag,(MagickOffsetType)
4742 if (proceed == MagickFalse)
4746 stegano_view=DestroyCacheView(stegano_view);
4747 watermark_view=DestroyCacheView(watermark_view);
4748 if (stegano_image->storage_class == PseudoClass)
4749 (void) SyncImage(stegano_image,exception);
4750 if (status == MagickFalse)
4752 stegano_image=DestroyImage(stegano_image);
4753 return((Image *) NULL);
4755 return(stegano_image);
4759 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4763 % S t e r e o A n a g l y p h I m a g e %
4767 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4769 % StereoAnaglyphImage() combines two images and produces a single image that
4770 % is the composite of a left and right image of a stereo pair. Special
4771 % red-green stereo glasses are required to view this effect.
4773 % The format of the StereoAnaglyphImage method is:
4775 % Image *StereoImage(const Image *left_image,const Image *right_image,
4776 % ExceptionInfo *exception)
4777 % Image *StereoAnaglyphImage(const Image *left_image,
4778 % const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
4779 % ExceptionInfo *exception)
4781 % A description of each parameter follows:
4783 % o left_image: the left image.
4785 % o right_image: the right image.
4787 % o exception: return any errors or warnings in this structure.
4789 % o x_offset: amount, in pixels, by which the left image is offset to the
4790 % right of the right image.
4792 % o y_offset: amount, in pixels, by which the left image is offset to the
4793 % bottom of the right image.
4797 MagickExport Image *StereoImage(const Image *left_image,
4798 const Image *right_image,ExceptionInfo *exception)
4800 return(StereoAnaglyphImage(left_image,right_image,0,0,exception));
4803 MagickExport Image *StereoAnaglyphImage(const Image *left_image,
4804 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
4805 ExceptionInfo *exception)
4807 #define StereoImageTag "Stereo/Image"
4821 assert(left_image != (const Image *) NULL);
4822 assert(left_image->signature == MagickSignature);
4823 if (left_image->debug != MagickFalse)
4824 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
4825 left_image->filename);
4826 assert(right_image != (const Image *) NULL);
4827 assert(right_image->signature == MagickSignature);
4828 assert(exception != (ExceptionInfo *) NULL);
4829 assert(exception->signature == MagickSignature);
4830 assert(right_image != (const Image *) NULL);
4832 if ((left_image->columns != right_image->columns) ||
4833 (left_image->rows != right_image->rows))
4834 ThrowImageException(ImageError,"LeftAndRightImageSizesDiffer");
4836 Initialize stereo image attributes.
4838 stereo_image=CloneImage(left_image,left_image->columns,left_image->rows,
4839 MagickTrue,exception);
4840 if (stereo_image == (Image *) NULL)
4841 return((Image *) NULL);
4842 if (SetImageStorageClass(stereo_image,DirectClass,exception) == MagickFalse)
4844 stereo_image=DestroyImage(stereo_image);
4845 return((Image *) NULL);
4848 Copy left image to red channel and right image to blue channel.
4851 for (y=0; y < (ssize_t) stereo_image->rows; y++)
4853 register const Quantum
4863 p=GetVirtualPixels(left_image,-x_offset,y-y_offset,image->columns,1,
4865 q=GetVirtualPixels(right_image,0,y,right_image->columns,1,exception);
4866 r=QueueAuthenticPixels(stereo_image,0,y,stereo_image->columns,1,exception);
4867 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL) ||
4868 (r == (Quantum *) NULL))
4870 for (x=0; x < (ssize_t) stereo_image->columns; x++)
4872 SetPixelRed(image,GetPixelRed(left_image,p),r);
4873 SetPixelGreen(image,GetPixelGreen(right_image,q),r);
4874 SetPixelBlue(image,GetPixelBlue(right_image,q),r);
4875 if ((GetPixelAlphaTraits(stereo_image) & CopyPixelTrait) != 0)
4876 SetPixelAlpha(image,(GetPixelAlpha(left_image,p)+
4877 GetPixelAlpha(right_image,q))/2,r);
4878 p+=GetPixelChannels(left_image);
4879 q+=GetPixelChannels(right_image);
4880 r+=GetPixelChannels(stereo_image);
4882 if (SyncAuthenticPixels(stereo_image,exception) == MagickFalse)
4884 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4889 proceed=SetImageProgress(image,StereoImageTag,(MagickOffsetType) y,
4890 stereo_image->rows);
4891 if (proceed == MagickFalse)
4895 if (status == MagickFalse)
4897 stereo_image=DestroyImage(stereo_image);
4898 return((Image *) NULL);
4900 return(stereo_image);
4904 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4908 % S w i r l I m a g e %
4912 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4914 % SwirlImage() swirls the pixels about the center of the image, where
4915 % degrees indicates the sweep of the arc through which each pixel is moved.
4916 % You get a more dramatic effect as the degrees move from 1 to 360.
4918 % The format of the SwirlImage method is:
4920 % Image *SwirlImage(const Image *image,double degrees,
4921 % const PixelInterpolateMethod method,ExceptionInfo *exception)
4923 % A description of each parameter follows:
4925 % o image: the image.
4927 % o degrees: Define the tightness of the swirling effect.
4929 % o method: the pixel interpolation method.
4931 % o exception: return any errors or warnings in this structure.
4934 MagickExport Image *SwirlImage(const Image *image,double degrees,
4935 const PixelInterpolateMethod method,ExceptionInfo *exception)
4937 #define SwirlImageTag "Swirl/Image"
4963 Initialize swirl image attributes.
4965 assert(image != (const Image *) NULL);
4966 assert(image->signature == MagickSignature);
4967 if (image->debug != MagickFalse)
4968 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4969 assert(exception != (ExceptionInfo *) NULL);
4970 assert(exception->signature == MagickSignature);
4971 swirl_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
4972 if (swirl_image == (Image *) NULL)
4973 return((Image *) NULL);
4974 if (SetImageStorageClass(swirl_image,DirectClass,exception) == MagickFalse)
4976 swirl_image=DestroyImage(swirl_image);
4977 return((Image *) NULL);
4979 if (swirl_image->background_color.alpha != OpaqueAlpha)
4980 swirl_image->matte=MagickTrue;
4982 Compute scaling factor.
4984 center.x=(double) image->columns/2.0;
4985 center.y=(double) image->rows/2.0;
4986 radius=MagickMax(center.x,center.y);
4989 if (image->columns > image->rows)
4990 scale.y=(double) image->columns/(double) image->rows;
4992 if (image->columns < image->rows)
4993 scale.x=(double) image->rows/(double) image->columns;
4994 degrees=(double) DegreesToRadians(degrees);
5000 image_view=AcquireCacheView(image);
5001 swirl_view=AcquireCacheView(swirl_image);
5002 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5003 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
5005 for (y=0; y < (ssize_t) image->rows; y++)
5013 register const Quantum
5022 if (status == MagickFalse)
5024 p=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
5025 q=GetCacheViewAuthenticPixels(swirl_view,0,y,swirl_image->columns,1,
5027 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
5032 delta.y=scale.y*(double) (y-center.y);
5033 for (x=0; x < (ssize_t) image->columns; x++)
5039 Determine if the pixel is within an ellipse.
5041 delta.x=scale.x*(double) (x-center.x);
5042 distance=delta.x*delta.x+delta.y*delta.y;
5043 if (distance >= (radius*radius))
5045 for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
5058 factor=1.0-sqrt((double) distance)/radius;
5059 sine=sin((double) (degrees*factor*factor));
5060 cosine=cos((double) (degrees*factor*factor));
5061 status=InterpolatePixelChannels(image,image_view,swirl_image,method,
5062 ((cosine*delta.x-sine*delta.y)/scale.x+center.x),(double)
5063 ((sine*delta.x+cosine*delta.y)/scale.y+center.y),q,exception);
5065 p+=GetPixelChannels(image);
5066 q+=GetPixelChannels(swirl_image);
5068 if (SyncCacheViewAuthenticPixels(swirl_view,exception) == MagickFalse)
5070 if (image->progress_monitor != (MagickProgressMonitor) NULL)
5075 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5076 #pragma omp critical (MagickCore_SwirlImage)
5078 proceed=SetImageProgress(image,SwirlImageTag,progress++,image->rows);
5079 if (proceed == MagickFalse)
5083 swirl_view=DestroyCacheView(swirl_view);
5084 image_view=DestroyCacheView(image_view);
5085 if (status == MagickFalse)
5086 swirl_image=DestroyImage(swirl_image);
5087 return(swirl_image);
5091 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5095 % T i n t I m a g e %
5099 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5101 % TintImage() applies a color vector to each pixel in the image. The length
5102 % of the vector is 0 for black and white and at its maximum for the midtones.
5103 % The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))
5105 % The format of the TintImage method is:
5107 % Image *TintImage(const Image *image,const char *blend,
5108 % const PixelInfo *tint,ExceptionInfo *exception)
5110 % A description of each parameter follows:
5112 % o image: the image.
5114 % o blend: A color value used for tinting.
5116 % o tint: A color value used for tinting.
5118 % o exception: return any errors or warnings in this structure.
5121 MagickExport Image *TintImage(const Image *image,const char *blend,
5122 const PixelInfo *tint,ExceptionInfo *exception)
5124 #define TintImageTag "Tint/Image"
5156 Allocate tint image.
5158 assert(image != (const Image *) NULL);
5159 assert(image->signature == MagickSignature);
5160 if (image->debug != MagickFalse)
5161 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5162 assert(exception != (ExceptionInfo *) NULL);
5163 assert(exception->signature == MagickSignature);
5164 tint_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
5165 if (tint_image == (Image *) NULL)
5166 return((Image *) NULL);
5167 if (SetImageStorageClass(tint_image,DirectClass,exception) == MagickFalse)
5169 tint_image=DestroyImage(tint_image);
5170 return((Image *) NULL);
5172 if (blend == (const char *) NULL)
5175 Determine RGB values of the color.
5177 GetPixelInfo(image,&pixel);
5178 flags=ParseGeometry(blend,&geometry_info);
5179 pixel.red=geometry_info.rho;
5180 pixel.green=geometry_info.rho;
5181 pixel.blue=geometry_info.rho;
5182 pixel.alpha=OpaqueAlpha;
5183 if ((flags & SigmaValue) != 0)
5184 pixel.green=geometry_info.sigma;
5185 if ((flags & XiValue) != 0)
5186 pixel.blue=geometry_info.xi;
5187 if ((flags & PsiValue) != 0)
5188 pixel.alpha=geometry_info.psi;
5189 if (image->colorspace == CMYKColorspace)
5191 pixel.black=geometry_info.rho;
5192 if ((flags & PsiValue) != 0)
5193 pixel.black=geometry_info.psi;
5194 if ((flags & ChiValue) != 0)
5195 pixel.alpha=geometry_info.chi;
5197 intensity=(MagickRealType) GetPixelInfoIntensity(tint);
5198 color_vector.red=(MagickRealType) (pixel.red*tint->red/100.0-intensity);
5199 color_vector.green=(MagickRealType) (pixel.green*tint->green/100.0-intensity);
5200 color_vector.blue=(MagickRealType) (pixel.blue*tint->blue/100.0-intensity);
5201 color_vector.black=(MagickRealType) (pixel.black*tint->black/100.0-intensity);
5202 color_vector.alpha=(MagickRealType) (pixel.alpha*tint->alpha/100.0-intensity);
5208 image_view=AcquireCacheView(image);
5209 tint_view=AcquireCacheView(tint_image);
5210 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5211 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
5213 for (y=0; y < (ssize_t) image->rows; y++)
5215 register const Quantum
5224 if (status == MagickFalse)
5226 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
5227 q=QueueCacheViewAuthenticPixels(tint_view,0,y,tint_image->columns,1,
5229 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
5234 for (x=0; x < (ssize_t) image->columns; x++)
5242 if ((GetPixelRedTraits(tint_image) & UpdatePixelTrait) != 0)
5244 weight=QuantumScale*GetPixelRed(image,p)-0.5;
5245 pixel.red=(MagickRealType) GetPixelRed(image,p)+
5246 color_vector.red*(1.0-(4.0*(weight*weight)));
5247 SetPixelRed(tint_image,ClampToQuantum(pixel.red),q);
5249 if ((GetPixelGreenTraits(tint_image) & UpdatePixelTrait) != 0)
5251 weight=QuantumScale*GetPixelGreen(image,p)-0.5;
5252 pixel.green=(MagickRealType) GetPixelGreen(image,p)+
5253 color_vector.green*(1.0-(4.0*(weight*weight)));
5254 SetPixelGreen(tint_image,ClampToQuantum(pixel.green),q);
5256 if ((GetPixelBlueTraits(tint_image) & UpdatePixelTrait) != 0)
5258 weight=QuantumScale*GetPixelBlue(image,p)-0.5;
5259 pixel.blue=(MagickRealType) GetPixelBlue(image,p)+
5260 color_vector.blue*(1.0-(4.0*(weight*weight)));
5261 SetPixelBlue(tint_image,ClampToQuantum(pixel.blue),q);
5263 if ((GetPixelBlackTraits(tint_image) & UpdatePixelTrait) != 0)
5265 weight=QuantumScale*GetPixelBlack(image,p)-0.5;
5266 pixel.black=(MagickRealType) GetPixelBlack(image,p)+
5267 color_vector.black*(1.0-(4.0*(weight*weight)));
5268 SetPixelBlack(tint_image,ClampToQuantum(pixel.black),q);
5270 if ((GetPixelAlphaTraits(tint_image) & CopyPixelTrait) != 0)
5271 SetPixelAlpha(tint_image,GetPixelAlpha(image,p),q);
5272 p+=GetPixelChannels(image);
5273 q+=GetPixelChannels(tint_image);
5275 if (SyncCacheViewAuthenticPixels(tint_view,exception) == MagickFalse)
5277 if (image->progress_monitor != (MagickProgressMonitor) NULL)
5282 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5283 #pragma omp critical (MagickCore_TintImage)
5285 proceed=SetImageProgress(image,TintImageTag,progress++,image->rows);
5286 if (proceed == MagickFalse)
5290 tint_view=DestroyCacheView(tint_view);
5291 image_view=DestroyCacheView(image_view);
5292 if (status == MagickFalse)
5293 tint_image=DestroyImage(tint_image);
5298 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5302 % V i g n e t t e I m a g e %
5306 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5308 % VignetteImage() softens the edges of the image in vignette style.
5310 % The format of the VignetteImage method is:
5312 % Image *VignetteImage(const Image *image,const double radius,
5313 % const double sigma,const ssize_t x,const ssize_t y,
5314 % ExceptionInfo *exception)
5316 % A description of each parameter follows:
5318 % o image: the image.
5320 % o radius: the radius of the pixel neighborhood.
5322 % o sigma: the standard deviation of the Gaussian, in pixels.
5324 % o x, y: Define the x and y ellipse offset.
5326 % o exception: return any errors or warnings in this structure.
5329 MagickExport Image *VignetteImage(const Image *image,const double radius,
5330 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
5333 ellipse[MaxTextExtent];
5344 assert(image != (Image *) NULL);
5345 assert(image->signature == MagickSignature);
5346 if (image->debug != MagickFalse)
5347 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5348 assert(exception != (ExceptionInfo *) NULL);
5349 assert(exception->signature == MagickSignature);
5350 canvas_image=CloneImage(image,0,0,MagickTrue,exception);
5351 if (canvas_image == (Image *) NULL)
5352 return((Image *) NULL);
5353 if (SetImageStorageClass(canvas_image,DirectClass,exception) == MagickFalse)
5355 canvas_image=DestroyImage(canvas_image);
5356 return((Image *) NULL);
5358 canvas_image->matte=MagickTrue;
5359 oval_image=CloneImage(canvas_image,canvas_image->columns,
5360 canvas_image->rows,MagickTrue,exception);
5361 if (oval_image == (Image *) NULL)
5363 canvas_image=DestroyImage(canvas_image);
5364 return((Image *) NULL);
5366 (void) QueryColorCompliance("#000000",AllCompliance,
5367 &oval_image->background_color,exception);
5368 (void) SetImageBackgroundColor(oval_image,exception);
5369 draw_info=CloneDrawInfo((const ImageInfo *) NULL,(const DrawInfo *) NULL);
5370 (void) QueryColorCompliance("#ffffff",AllCompliance,&draw_info->fill,
5372 (void) QueryColorCompliance("#ffffff",AllCompliance,&draw_info->stroke,
5374 (void) FormatLocaleString(ellipse,MaxTextExtent,
5375 "ellipse %g,%g,%g,%g,0.0,360.0",image->columns/2.0,
5376 image->rows/2.0,image->columns/2.0-x,image->rows/2.0-y);
5377 draw_info->primitive=AcquireString(ellipse);
5378 (void) DrawImage(oval_image,draw_info,exception);
5379 draw_info=DestroyDrawInfo(draw_info);
5380 blur_image=BlurImage(oval_image,radius,sigma,image->bias,exception);
5381 oval_image=DestroyImage(oval_image);
5382 if (blur_image == (Image *) NULL)
5384 canvas_image=DestroyImage(canvas_image);
5385 return((Image *) NULL);
5387 blur_image->matte=MagickFalse;
5388 (void) CompositeImage(canvas_image,CopyOpacityCompositeOp,blur_image,0,0,
5390 blur_image=DestroyImage(blur_image);
5391 vignette_image=MergeImageLayers(canvas_image,FlattenLayer,exception);
5392 canvas_image=DestroyImage(canvas_image);
5393 return(vignette_image);
5397 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5401 % W a v e I m a g e %
5405 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5407 % WaveImage() creates a "ripple" effect in the image by shifting the pixels
5408 % vertically along a sine wave whose amplitude and wavelength is specified
5409 % by the given parameters.
5411 % The format of the WaveImage method is:
5413 % Image *WaveImage(const Image *image,const double amplitude,
5414 % const double wave_length,const PixelInterpolateMethod method,
5415 % ExceptionInfo *exception)
5417 % A description of each parameter follows:
5419 % o image: the image.
5421 % o amplitude, wave_length: Define the amplitude and wave length of the
5424 % o interpolate: the pixel interpolation method.
5426 % o exception: return any errors or warnings in this structure.
5429 MagickExport Image *WaveImage(const Image *image,const double amplitude,
5430 const double wave_length,const PixelInterpolateMethod method,
5431 ExceptionInfo *exception)
5433 #define WaveImageTag "Wave/Image"
5458 Initialize wave image attributes.
5460 assert(image != (Image *) NULL);
5461 assert(image->signature == MagickSignature);
5462 if (image->debug != MagickFalse)
5463 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5464 assert(exception != (ExceptionInfo *) NULL);
5465 assert(exception->signature == MagickSignature);
5466 wave_image=CloneImage(image,image->columns,(size_t) (image->rows+2.0*
5467 fabs(amplitude)),MagickTrue,exception);
5468 if (wave_image == (Image *) NULL)
5469 return((Image *) NULL);
5470 if (SetImageStorageClass(wave_image,DirectClass,exception) == MagickFalse)
5472 wave_image=DestroyImage(wave_image);
5473 return((Image *) NULL);
5475 if (wave_image->background_color.alpha != OpaqueAlpha)
5476 wave_image->matte=MagickTrue;
5480 sine_map=(MagickRealType *) AcquireQuantumMemory((size_t) wave_image->columns,
5482 if (sine_map == (MagickRealType *) NULL)
5484 wave_image=DestroyImage(wave_image);
5485 ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
5487 for (i=0; i < (ssize_t) wave_image->columns; i++)
5488 sine_map[i]=fabs(amplitude)+amplitude*sin((double) ((2.0*MagickPI*i)/
5495 image_view=AcquireCacheView(image);
5496 wave_view=AcquireCacheView(wave_image);
5497 (void) SetCacheViewVirtualPixelMethod(image_view,
5498 BackgroundVirtualPixelMethod);
5499 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5500 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
5502 for (y=0; y < (ssize_t) wave_image->rows; y++)
5510 if (status == MagickFalse)
5512 q=QueueCacheViewAuthenticPixels(wave_view,0,y,wave_image->columns,1,
5514 if (q == (Quantum *) NULL)
5519 for (x=0; x < (ssize_t) wave_image->columns; x++)
5521 status=InterpolatePixelChannels(image,image_view,wave_image,method,
5522 (double) x,(double) (y-sine_map[x]),q,exception);
5523 q+=GetPixelChannels(wave_image);
5525 if (SyncCacheViewAuthenticPixels(wave_view,exception) == MagickFalse)
5527 if (image->progress_monitor != (MagickProgressMonitor) NULL)
5532 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5533 #pragma omp critical (MagickCore_WaveImage)
5535 proceed=SetImageProgress(image,WaveImageTag,progress++,image->rows);
5536 if (proceed == MagickFalse)
5540 wave_view=DestroyCacheView(wave_view);
5541 image_view=DestroyCacheView(image_view);
5542 sine_map=(MagickRealType *) RelinquishMagickMemory(sine_map);
5543 if (status == MagickFalse)
5544 wave_image=DestroyImage(wave_image);