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/PHP-5.5/ext/gd/libgd/
H A Dgd.c944 float p_dist, p_alpha; in gdImageAntiAliasedApply() local
988 p_alpha = pow (1.0 - (p_dist / 1.5), 2); in gdImageAntiAliasedApply()
990 if (p_alpha > 0) { in gdImageAntiAliasedApply()
991 if (p_alpha >= 1) { in gdImageAntiAliasedApply()
994 opacity = (unsigned char) (p_alpha * 255.0); in gdImageAntiAliasedApply()
1019 float p_alpha, old_alpha; in gdImageAABlend() local
1037 p_alpha = (float) (im->AA_opacity[py][px]) / 255.0; in gdImageAABlend()
1038 old_alpha = 1.0 - p_alpha; in gdImageAABlend()
1040 if (p_alpha >= 1.0) { in gdImageAABlend()
1047 p_red = (int) (((float) color_red * p_alpha) + ((float) old_red * old_alpha)); in gdImageAABlend()
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