forked from openkylin/imagemagick
293 lines
11 KiB
C
293 lines
11 KiB
C
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% PPPP L AAA SSSSS M M AAA %
|
||
% P P L A A SS MM MM A A %
|
||
% PPPP L AAAAA SSS M M M AAAAA %
|
||
% P L A A SS M M A A %
|
||
% P LLLLL A A SSSSS M M A A %
|
||
% %
|
||
% %
|
||
% Read a Plasma Image. %
|
||
% %
|
||
% Software Design %
|
||
% Cristy %
|
||
% July 1992 %
|
||
% %
|
||
% %
|
||
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
|
||
% dedicated to making software imaging solutions freely available. %
|
||
% %
|
||
% You may not use this file except in compliance with the License. You may %
|
||
% obtain a copy of the License at %
|
||
% %
|
||
% https://imagemagick.org/script/license.php %
|
||
% %
|
||
% Unless required by applicable law or agreed to in writing, software %
|
||
% distributed under the License is distributed on an "AS IS" BASIS, %
|
||
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
|
||
% See the License for the specific language governing permissions and %
|
||
% limitations under the License. %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
%
|
||
*/
|
||
|
||
/*
|
||
Include declarations.
|
||
*/
|
||
#include "magick/studio.h"
|
||
#include "magick/blob.h"
|
||
#include "magick/blob-private.h"
|
||
#include "magick/cache.h"
|
||
#include "magick/channel.h"
|
||
#include "magick/colorspace-private.h"
|
||
#include "magick/constitute.h"
|
||
#include "magick/exception.h"
|
||
#include "magick/exception-private.h"
|
||
#include "magick/fx.h"
|
||
#include "magick/image.h"
|
||
#include "magick/image-private.h"
|
||
#include "magick/list.h"
|
||
#include "magick/magick.h"
|
||
#include "magick/memory_.h"
|
||
#include "magick/module.h"
|
||
#include "magick/monitor.h"
|
||
#include "magick/monitor-private.h"
|
||
#include "magick/pixel-accessor.h"
|
||
#include "magick/quantum-private.h"
|
||
#include "magick/random_.h"
|
||
#include "magick/random-private.h"
|
||
#include "magick/signature-private.h"
|
||
#include "magick/static.h"
|
||
#include "magick/string_.h"
|
||
#include "magick/visual-effects.h"
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e a d P L A S M A I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% ReadPlasmaImage creates a plasma fractal image. The image is
|
||
% initialized to the X server color as specified by the filename.
|
||
%
|
||
% The format of the ReadPlasmaImage method is:
|
||
%
|
||
% Image *ReadPlasmaImage(const ImageInfo *image_info,
|
||
% ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
|
||
static inline MagickBooleanType PlasmaPixel(Image *image,
|
||
RandomInfo *magick_restrict random_info,const double x,const double y,
|
||
ExceptionInfo *exception)
|
||
{
|
||
PixelPacket
|
||
*q;
|
||
|
||
q=GetAuthenticPixels(image,(ssize_t) (x+0.5),(ssize_t) (y+0.5),1,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
return(MagickFalse);
|
||
SetPixelRed(q,(Quantum) (QuantumRange*
|
||
GetPseudoRandomValue(random_info)+0.5));
|
||
SetPixelGreen(q,(Quantum) (QuantumRange*
|
||
GetPseudoRandomValue(random_info)+0.5));
|
||
SetPixelBlue(q,(Quantum) (QuantumRange*
|
||
GetPseudoRandomValue(random_info)+0.5));
|
||
return(SyncAuthenticPixels(image,exception));
|
||
}
|
||
|
||
static Image *ReadPlasmaImage(const ImageInfo *image_info,
|
||
ExceptionInfo *exception)
|
||
{
|
||
Image
|
||
*image;
|
||
|
||
ImageInfo
|
||
*read_info;
|
||
|
||
MagickStatusType
|
||
status;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
PixelPacket
|
||
*q;
|
||
|
||
size_t
|
||
i;
|
||
|
||
SegmentInfo
|
||
segment_info;
|
||
|
||
size_t
|
||
depth,
|
||
max_depth;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
/*
|
||
Recursively apply plasma to the image.
|
||
*/
|
||
read_info=CloneImageInfo(image_info);
|
||
SetImageInfoBlob(read_info,(void *) NULL,0);
|
||
(void) FormatLocaleString(read_info->filename,MaxTextExtent,
|
||
"gradient:%s",image_info->filename);
|
||
image=ReadImage(read_info,exception);
|
||
read_info=DestroyImageInfo(read_info);
|
||
if (image == (Image *) NULL)
|
||
return((Image *) NULL);
|
||
image->storage_class=DirectClass;
|
||
if (IsGrayColorspace(image->colorspace) != MagickFalse)
|
||
(void) SetImageColorspace(image,sRGBColorspace);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelOpacity(q,QuantumRange/2);
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
segment_info.x1=0;
|
||
segment_info.y1=0;
|
||
segment_info.x2=(double) image->columns-1;
|
||
segment_info.y2=(double) image->rows-1;
|
||
if (LocaleCompare(image_info->filename,"fractal") == 0)
|
||
{
|
||
RandomInfo
|
||
*random_info;
|
||
|
||
/*
|
||
Seed pixels before recursion.
|
||
*/
|
||
random_info=AcquireRandomInfo();
|
||
status=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1,
|
||
&image->exception);
|
||
status=PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
|
||
segment_info.y2)/2.0,&image->exception);
|
||
status&=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2,
|
||
&image->exception);
|
||
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/
|
||
2.0,segment_info.y1,&image->exception);
|
||
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/
|
||
2.0,(segment_info.y1+segment_info.y2)/2,&image->exception);
|
||
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/
|
||
2.0,segment_info.y2,&image->exception);
|
||
status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1,
|
||
&image->exception);
|
||
status&=PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
|
||
segment_info.y2)/2.0,&image->exception);
|
||
status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2,
|
||
&image->exception);
|
||
random_info=DestroyRandomInfo(random_info);
|
||
if (status == MagickFalse)
|
||
return(image);
|
||
}
|
||
i=(size_t) MagickMax(image->columns,image->rows)/2;
|
||
for (max_depth=0; i != 0; max_depth++)
|
||
i>>=1;
|
||
for (depth=1; ; depth++)
|
||
{
|
||
if (PlasmaImage(image,&segment_info,0,depth) != MagickFalse)
|
||
break;
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) depth,
|
||
max_depth);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r P L A S M A I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterPLASMAImage() adds attributes for the Plasma image format to
|
||
% the list of supported formats. The attributes include the image format
|
||
% tag, a method to read and/or write the format, whether the format
|
||
% supports the saving of more than one frame to the same file or blob,
|
||
% whether the format supports native in-memory I/O, and a brief
|
||
% description of the format.
|
||
%
|
||
% The format of the RegisterPLASMAImage method is:
|
||
%
|
||
% size_t RegisterPLASMAImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterPLASMAImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("PLASMA");
|
||
entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
|
||
entry->adjoin=MagickFalse;
|
||
entry->format_type=ImplicitFormatType;
|
||
entry->description=ConstantString("Plasma fractal image");
|
||
entry->magick_module=ConstantString("PLASMA");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("FRACTAL");
|
||
entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
|
||
entry->adjoin=MagickFalse;
|
||
entry->format_type=ImplicitFormatType;
|
||
entry->description=ConstantString("Plasma fractal image");
|
||
entry->magick_module=ConstantString("PLASMA");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r P L A S M A I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterPLASMAImage() removes format registrations made by the
|
||
% PLASMA module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterPLASMAImage method is:
|
||
%
|
||
% UnregisterPLASMAImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterPLASMAImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("FRACTAL");
|
||
(void) UnregisterMagickInfo("PLASMA");
|
||
}
|