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ColorUtil modHsv: keep alpha

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This commit is contained in:
Gustl22 2019-03-06 21:15:27 +01:00
parent d81c32b97c
commit e4608b17c3
1 changed files with 3 additions and 2 deletions
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5
vtm/src/org/oscim/utils/ColorUtil.java
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@ -20,6 +20,7 @@ package org.oscim.utils;
import org.oscim.backend.canvas.Color;
import org.oscim.utils.math.Vec3;
import static org.oscim.backend.canvas.Color.a;
import static org.oscim.backend.canvas.Color.b;
import static org.oscim.backend.canvas.Color.g;
import static org.oscim.backend.canvas.Color.r;
@ -81,11 +82,11 @@ public class ColorUtil {
return color;
Vec3 hsl = TMP_VEC;
rgbToHsv(r(color), g(color), b(color), hsl);
return hsvToRgb(clamp((hue + hsl.x) % 1, 0, 1),
return Color.setA(hsvToRgb(clamp((hue + hsl.x) % 1, 0, 1),
clamp(relative || saturation <= 1 ? saturation * hsl.y :
hsl.y + (saturation - 1) * (1 - hsl.y), 0, 1),
clamp(relative || value <= 1 ? value * hsl.z :
hsl.z + (value - 1) * (1 - hsl.z), 0, 1));
hsl.z + (value - 1) * (1 - hsl.z), 0, 1)), a(color));
}
// functions ported from http://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c