gouraudColorDelta 2711 lib/pdf/xpdf/Gfx.cc if (abs(color0->c[i] - color1->c[i]) > gouraudColorDelta || gouraudColorDelta 2712 lib/pdf/xpdf/Gfx.cc abs(color1->c[i] - color2->c[i]) > gouraudColorDelta) {