コード例 #1
0
ファイル: plasma.c プロジェクト: JasonGross/characters
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));
}
コード例 #2
0
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));
}