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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% PPPP L AAA SSSSS M M AAA %
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% P P L A A SS MM MM A A %
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% PPPP L AAAAA SSS M M M AAAAA %
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% P L A A SS M M A A %
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% P LLLLL A A SSSSS M M A A %
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% %
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% %
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% Read a Plasma Image. %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/channel.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/constitute.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/module.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/random_.h"
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#include "MagickCore/random-private.h"
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#include "MagickCore/signature-private.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/visual-effects.h"
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d P L A S M A I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadPlasmaImage creates a plasma fractal image. The image is
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% initialized to the X server color as specified by the filename.
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%
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% The format of the ReadPlasmaImage method is:
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%
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% Image *ReadPlasmaImage(const ImageInfo *image_info,
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% ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static inline MagickBooleanType PlasmaPixel(Image *image,
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RandomInfo *magick_restrict random_info,const double x,const double y,
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ExceptionInfo *exception)
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{
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Quantum
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*q;
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q=GetAuthenticPixels(image,(ssize_t) (x+0.5),(ssize_t) (y+0.5),1,1,
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exception);
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if (q == (Quantum *) NULL)
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return(MagickFalse);
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SetPixelRed(image,(Quantum) (QuantumRange*
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GetPseudoRandomValue(random_info)+0.5),q);
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SetPixelGreen(image,(Quantum) (QuantumRange*
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GetPseudoRandomValue(random_info)+0.5),q);
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SetPixelBlue(image,(Quantum) (QuantumRange*
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GetPseudoRandomValue(random_info)+0.5),q);
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return(SyncAuthenticPixels(image,exception));
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}
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static Image *ReadPlasmaImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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Image
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*image;
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ImageInfo
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*read_info;
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MagickStatusType
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status;
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ssize_t
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x;
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Quantum
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*q;
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size_t
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i;
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SegmentInfo
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segment_info;
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size_t
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depth,
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max_depth;
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ssize_t
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y;
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/*
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Recursively apply plasma to the image.
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*/
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read_info=CloneImageInfo(image_info);
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SetImageInfoBlob(read_info,(void *) NULL,0);
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(void) FormatLocaleString(read_info->filename,MagickPathExtent,
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"gradient:%s",image_info->filename);
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image=ReadImage(read_info,exception);
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read_info=DestroyImageInfo(read_info);
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if (image == (Image *) NULL)
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return((Image *) NULL);
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(void) SetImageStorageClass(image,DirectClass,exception);
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if (IsGrayColorspace(image->colorspace) != MagickFalse)
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(void) SetImageColorspace(image,sRGBColorspace,exception);
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (Quantum *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelAlpha(image,QuantumRange/2,q);
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q+=GetPixelChannels(image);
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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}
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segment_info.x1=0;
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segment_info.y1=0;
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segment_info.x2=(double) image->columns-1;
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segment_info.y2=(double) image->rows-1;
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if (LocaleCompare(image_info->filename,"fractal") == 0)
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{
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RandomInfo
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*random_info;
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/*
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Seed pixels before recursion.
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*/
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(void) SetImageColorspace(image,sRGBColorspace,exception);
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random_info=AcquireRandomInfo();
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status=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1,
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exception);
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status&=PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
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segment_info.y2)/2,exception);
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status&=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2,
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exception);
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status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
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segment_info.y1,exception);
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status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
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(segment_info.y1+segment_info.y2)/2,exception);
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status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
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segment_info.y2,exception);
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status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1,
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exception);
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status&=PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
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segment_info.y2)/2,exception);
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status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2,
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exception);
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random_info=DestroyRandomInfo(random_info);
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if (status == MagickFalse)
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return(image);
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}
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i=(size_t) MagickMax(image->columns,image->rows)/2;
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for (max_depth=0; i != 0; max_depth++)
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i>>=1;
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for (depth=1; ; depth++)
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{
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if (PlasmaImage(image,&segment_info,0,depth,exception) != MagickFalse)
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break;
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) depth,
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max_depth);
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if (status == MagickFalse)
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break;
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}
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return(GetFirstImageInList(image));
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e g i s t e r P L A S M A I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% RegisterPLASMAImage() adds attributes for the Plasma image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterPLASMAImage method is:
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%
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% size_t RegisterPLASMAImage(void)
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%
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*/
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ModuleExport size_t RegisterPLASMAImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("PLASMA","PLASMA","Plasma fractal image");
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entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
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entry->flags^=CoderAdjoinFlag;
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entry->format_type=ImplicitFormatType;
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("PLASMA","FRACTAL","Plasma fractal image");
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entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
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entry->flags^=CoderAdjoinFlag;
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entry->format_type=ImplicitFormatType;
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% U n r e g i s t e r P L A S M A I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% UnregisterPLASMAImage() removes format registrations made by the
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% PLASMA module from the list of supported formats.
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%
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% The format of the UnregisterPLASMAImage method is:
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%
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% UnregisterPLASMAImage(void)
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%
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*/
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ModuleExport void UnregisterPLASMAImage(void)
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{
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(void) UnregisterMagickInfo("FRACTAL");
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(void) UnregisterMagickInfo("PLASMA");
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}
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