static Image *ReadPlasmaImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
ImageInfo
*read_info;
ssize_t
y;
MagickBooleanType
status;
register ssize_t
x;
register PixelPacket
*q;
register size_t
i;
SegmentInfo
segment_info;
size_t
depth,
max_depth;
/*
Recursively apply plasma to the image.
*/
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) FormatMagickString(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;
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++)
{
q->opacity=(Quantum) (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();
PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1);
PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
segment_info.y2)/2);
PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2);
PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
segment_info.y1);
PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
(segment_info.y1+segment_info.y2)/2);
PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
segment_info.y2);
PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1);
PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
segment_info.y2)/2);
PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2);
random_info=DestroyRandomInfo(random_info);
}
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;
}
(void) SetImageAlphaChannel(image,DeactivateAlphaChannel);
return(GetFirstImageInList(image));
}
static Image *ReadPlasmaImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
#define PlasmaImageTag "Plasma/Image"
Image
*image;
ImageInfo
*read_info;
long
y;
MagickBooleanType
status;
register long
x;
register PixelPacket
*q;
register unsigned long
i;
SegmentInfo
segment_info;
unsigned long
depth,
max_depth;
/*
Recursively apply plasma to the image.
*/
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) FormatMagickString(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;
for (y=0; y < (long) image->rows; y++)
{
q=GetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (long) image->columns; x++)
{
q->opacity=(Quantum) (QuantumRange/2);
q++;
}
if (SyncImagePixels(image) == 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)
{
/*
Seed pixels before recursion.
*/
PlasmaPixel(image,segment_info.x1,segment_info.y1);
PlasmaPixel(image,segment_info.x1,(segment_info.y1+segment_info.y2)/2);
PlasmaPixel(image,segment_info.x1,segment_info.y2);
PlasmaPixel(image,(segment_info.x1+segment_info.x2)/2,segment_info.y1);
PlasmaPixel(image,(segment_info.x1+segment_info.x2)/2,
(segment_info.y1+segment_info.y2)/2);
PlasmaPixel(image,(segment_info.x1+segment_info.x2)/2,segment_info.y2);
PlasmaPixel(image,segment_info.x2,segment_info.y1);
PlasmaPixel(image,segment_info.x2,(segment_info.y1+segment_info.y2)/2);
PlasmaPixel(image,segment_info.x2,segment_info.y2);
}
i=(unsigned long) 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;
if ((image->progress_monitor != (MagickProgressMonitor) NULL) &&
(QuantumTick((MagickOffsetType) depth,max_depth) != MagickFalse))
{
status=image->progress_monitor(PlasmaImageTag,(MagickOffsetType) depth,
max_depth,image->client_data);
if (status == MagickFalse)
break;
}
}
(void) SetImageOpacity(image,OpaqueOpacity);
return(GetFirstImageInList(image));
}