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simplify, no need to allocate color here as it always true color

master
Pierre Joye 2016-06-19 15:16:58 +07:00
parent 489e90f7aa
commit bb09a211d3
1 changed files with 41 additions and 19 deletions
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60
src/gd_rotate.c
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@ -55,16 +55,28 @@ void gdImageSkewX (gdImagePtr dst, gdImagePtr src, int uRow, int iOffset, double
b = (int)(gdImageBlue(src,pxlSrc) * dWeight);
a = (int)(gdImageAlpha(src,pxlSrc) * dWeight);
pxlLeft = gdImageColorAllocateAlpha(src, r, g, b, a);
if (pxlLeft == -1) {
pxlLeft = gdImageColorClosestAlpha(src, r, g, b, a);
if (r>255) {
r = 255;
}
r = gdImageRed(src,pxlSrc) - (gdImageRed(src,pxlLeft) - gdImageRed(src,pxlOldLeft));
g = gdImageGreen(src,pxlSrc) - (gdImageGreen(src,pxlLeft) - gdImageGreen(src,pxlOldLeft));
b = gdImageBlue(src,pxlSrc) - (gdImageBlue(src,pxlLeft) - gdImageBlue(src,pxlOldLeft));
a = gdImageAlpha(src,pxlSrc) - (gdImageAlpha(src,pxlLeft) - gdImageAlpha(src,pxlOldLeft));
if (g>255) {
g = 255;
}
if (b>255) {
b = 255;
}
if (a>127) {
a = 127;
}
pxlLeft = gdTrueColorAlpha(r, g, b, a);
r = gdImageRed(src,pxlSrc) - (r - gdImageRed(src,pxlOldLeft));
g = gdImageGreen(src,pxlSrc) - (g - gdImageGreen(src,pxlOldLeft));
b = gdImageBlue(src,pxlSrc) - (b - gdImageBlue(src,pxlOldLeft));
a = gdImageAlpha(src,pxlSrc) - (a - gdImageAlpha(src,pxlOldLeft));
if (r>255) {
r = 255;
@ -145,19 +157,31 @@ void gdImageSkewY (gdImagePtr dst, gdImagePtr src, int uCol, int iOffset, double
b = (int)((double)gdImageBlue(src,pxlSrc) * dWeight);
a = (int)((double)gdImageAlpha(src,pxlSrc) * dWeight);
pxlLeft = gdImageColorAllocateAlpha(src, r, g, b, a);
if (pxlLeft == -1) {
pxlLeft = gdImageColorClosestAlpha(src, r, g, b, a);
if (r>255) {
r = 255;
}
r = gdImageRed(src,pxlSrc) - (gdImageRed(src,pxlLeft) - gdImageRed(src,pxlOldLeft));
g = gdImageGreen(src,pxlSrc) - (gdImageGreen(src,pxlLeft) - gdImageGreen(src,pxlOldLeft));
b = gdImageBlue(src,pxlSrc) - (gdImageBlue(src,pxlLeft) - gdImageBlue(src,pxlOldLeft));
a = gdImageAlpha(src,pxlSrc) - (gdImageAlpha(src,pxlLeft) - gdImageAlpha(src,pxlOldLeft));
if (g>255) {
g = 255;
}
if (b>255) {
b = 255;
}
if (a>127) {
a = 127;
}
pxlLeft = gdTrueColorAlpha(r, g, b, a);
r = gdImageRed(src,pxlSrc) - (r - gdImageRed(src,pxlOldLeft));
g = gdImageGreen(src,pxlSrc) - (g - gdImageGreen(src,pxlOldLeft));
b = gdImageBlue(src,pxlSrc) - (b - gdImageBlue(src,pxlOldLeft));
a = gdImageAlpha(src,pxlSrc) - (a - gdImageAlpha(src,pxlOldLeft));
if (r>255) {
r = 255;
r = 255;
}
if (g>255) {
@ -529,5 +553,3 @@ gdImagePtr gdImageRotate (gdImagePtr src, double dAngle, int clrBack, int ignore
return rotatedImg;
}
/* End Rotate function */