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schonstal/gist:4718086

Created February 5, 2013 21:52
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gistfile1.txt
blendedColor =
((((colorAlpha*(newColor&0xff0000) + (256-colorAlpha)*(color&0xff0000)) >> 8) & 0xff0000) |
(((colorAlpha*(newColor&0xff) + (256-colorAlpha)*(color&0xff)) >> 8) & 0xff) |
(((colorAlpha*(newColor&0xff00) + (256-colorAlpha)*(color&0xff00)) >> 8) & 0xff00)) |
0xff000000;
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