BGD_DECLARE(void) gdImageCopyResized (gdImagePtr dst, gdImagePtr src, int dstX, int dstY,
		    int srcX, int srcY, int dstW, int dstH, int srcW,
		    int srcH)
{
  int c;
  int x, y;
  int tox, toy;
  int ydest;
  int i;
  int colorMap[gdMaxColors];
  /* Stretch vectors */
  int *stx;
  int *sty;
  /* We only need to use floating point to determine the correct
     stretch vector for one line's worth. */
  if (overflow2(sizeof (int), srcW)) {
    return;
  }
  if (overflow2(sizeof (int), srcH)) {
    return;
  }
  stx = (int *) gdMalloc (sizeof (int) * srcW);
  sty = (int *) gdMalloc (sizeof (int) * srcH);
  /* Fixed by Mao Morimoto 2.0.16 */
  for (i = 0; (i < srcW); i++)
    {
      stx[i] = dstW * (i + 1) / srcW - dstW * i / srcW;
    }
  for (i = 0; (i < srcH); i++)
    {
      sty[i] = dstH * (i + 1) / srcH - dstH * i / srcH;
    }
  for (i = 0; (i < gdMaxColors); i++)
    {
      colorMap[i] = (-1);
    }
  toy = dstY;
  for (y = srcY; (y < (srcY + srcH)); y++)
    {
      for (ydest = 0; (ydest < sty[y - srcY]); ydest++)
	{
	  tox = dstX;
	  for (x = srcX; (x < (srcX + srcW)); x++)
	    {
	      int nc = 0;
	      int mapTo;
	      if (!stx[x - srcX])
		{
		  continue;
		}
	      if (dst->trueColor)
		{
		  /* 2.0.9: Thorben Kundinger: Maybe the source image is not 
		     a truecolor image */
		  if (!src->trueColor)
		    {
		      int tmp = gdImageGetPixel (src, x, y);
		      mapTo = gdImageGetTrueColorPixel (src, x, y);
		      if (gdImageGetTransparent (src) == tmp)
			{
			  /* 2.0.21, TK: not tox++ */
			  tox += stx[x - srcX];
			  continue;
			}
		    }
		  else
		    {
		      /* TK: old code follows */
		      mapTo = gdImageGetTrueColorPixel (src, x, y);
		      /* Added 7/24/95: support transparent copies */
		      if (gdImageGetTransparent (src) == mapTo)
			{
			  /* 2.0.21, TK: not tox++ */
			  tox += stx[x - srcX];
			  continue;
			}
		    }
		}
	      else
		{
		  c = gdImageGetPixel (src, x, y);
		  /* Added 7/24/95: support transparent copies */
		  if (gdImageGetTransparent (src) == c)
		    {
		      tox += stx[x - srcX];
		      continue;
		    }
		  if (src->trueColor)
		    {
		      /* Remap to the palette available in the
		         destination image. This is slow and
		         works badly. */
		      mapTo = gdImageColorResolveAlpha (dst,
							gdTrueColorGetRed (c),
							gdTrueColorGetGreen
							(c),
							gdTrueColorGetBlue
							(c),
							gdTrueColorGetAlpha
							(c));
		    }
		  else
		    {
		      /* Have we established a mapping for this color? */
		      if (colorMap[c] == (-1))
			{
			  /* If it's the same image, mapping is trivial */
			  if (dst == src)
			    {
			      nc = c;
			    }
			  else
			    {
			      /* Find or create the best match */
			      /* 2.0.5: can't use gdTrueColorGetRed, etc with palette */
			      nc = gdImageColorResolveAlpha (dst,
							     gdImageRed (src,
									 c),
							     gdImageGreen
							     (src, c),
							     gdImageBlue (src,
									  c),
							     gdImageAlpha
							     (src, c));
			    }
			  colorMap[c] = nc;
			}
		      mapTo = colorMap[c];
		    }
		}
	      for (i = 0; (i < stx[x - srcX]); i++)
		{
		  gdImageSetPixel (dst, tox, toy, mapTo);
		  tox++;
		}
	    }
	  toy++;
	}
    }
  gdFree (stx);
  gdFree (sty);
}
Unknown