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package org.openslx.dozmod.gui.helper;
import java.awt.Color;
public class ColorUtil {
private static float[] squared(Color color) {
float[] vals = color.getRGBComponents(null);
vals[0] *= vals[0];
vals[1] *= vals[1];
vals[2] *= vals[2];
return vals;
}
private static Color sqrt(float... floatVals) {
floatVals[0] = (float) Math.sqrt(floatVals[0]);
floatVals[1] = (float) Math.sqrt(floatVals[1]);
floatVals[2] = (float) Math.sqrt(floatVals[2]);
return new Color(floatVals[0], floatVals[1], floatVals[2]);
}
public static Color blendFast(Color color1, Color color2, float wc1) {
float[] c1 = color1.getColorComponents(null);
float[] c2 = color2.getColorComponents(null);
float wc2 = 1f - wc1;
return new Color(c1[0] * wc1 + c2[0] * wc2, c1[1] * wc1 + c2[1] * wc2, c1[2] * wc1 + c2[2] * wc2);
}
public static Color blend(Color color1, Color color2, float wc1) {
float[] c1 = squared(color1);
float[] c2 = squared(color2);
float wc2 = 1f - wc1;
return sqrt(c1[0] * wc1 + c2[0] * wc2, c1[1] * wc1 + c2[1] * wc2, c1[2] * wc1 + c2[2] * wc2);
}
public static Color add(Color color1, Color color2) {
float[] c1 = squared(color1);
float[] c2 = squared(color2);
c1[0] += c2[0];
c1[1] += c2[1];
c1[2] += c2[2];
float max = Math.max(Math.max(c1[0], c1[1]), c1[2]);
if (max > 1f) {
c1[0] /= max;
c1[1] /= max;
c1[2] /= max;
}
return sqrt(c1[0], c1[1], c1[2]);
}
public static float getBrightness(Color color) {
float a[] = new float[3];
color.getRGBColorComponents(a);
return a[0] * 0.2126f + a[1] * 0.7152f + a[2] * 0.0722f;
}
public static float getContrast(Color a, Color b) {
float val = (getBrightness(a) + 0.05f) / (getBrightness(b) + 0.05f);
if (val < 1) {
val = 1 / val;
}
return val;
}
public static Color contrastColor(Color color) {
return new Color(color.getRed() ^ 0x80, color.getGreen() ^ 0x80, color.getBlue() ^ 0x80);
}
}
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