X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fkaka%2Fcakelight%2FColor.java;h=0756209004ace4f3acf15d41f95e0872cc69a11b;hb=38c759f87fc7de47d9dee60088f2dbc60e0a55fb;hp=da09127eff5c96a19bfcefa23beddaabe8732737;hpb=8aea44b5a5b9d56b600146ab305dfeef932772bd;p=kaka%2Fcakelight.git

diff --git a/src/kaka/cakelight/Color.java b/src/kaka/cakelight/Color.java
index da09127..0756209 100644
--- a/src/kaka/cakelight/Color.java
+++ b/src/kaka/cakelight/Color.java
@@ -1,6 +1,14 @@
 package kaka.cakelight;
 
 public class Color {
+    private static int[] gammaCorrection = new int[256];
+
+    public static void calculateGammaCorrection(double gamma) {
+        for (int i = 0, max = 255; i <= max; i++) {
+            gammaCorrection[i] = (int)(Math.pow((double)i / max, gamma) * max);
+        }
+    }
+
     private int r, g, b;
 
     public static Color rgb(double r, double g, double b) {
@@ -15,16 +23,35 @@ public class Color {
         return c;
     }
 
+    public static Color hsv(double hue, double saturation, double value) {
+        double normalizedHue = hue - Math.floor(hue);
+        int h = (int)(normalizedHue * 6);
+        double f = normalizedHue * 6 - h;
+        double p = value * (1 - saturation);
+        double q = value * (1 - f * saturation);
+        double t = value * (1 - (1 - f) * saturation);
+
+        switch (h) {
+            case 0: return rgb(value, t, p);
+            case 1: return rgb(q, value, p);
+            case 2: return rgb(p, value, t);
+            case 3: return rgb(p, q, value);
+            case 4: return rgb(t, p, value);
+            case 5: return rgb(value, p, q);
+            default: throw new RuntimeException("Something went wrong when converting from HSV to RGB. Input was " + hue + ", " + saturation + ", " + value);
+        }
+    }
+
     public int r() {
-        return r;
+        return gammaCorrection[r];
     }
 
     public int g() {
-        return g;
+        return gammaCorrection[g];
     }
 
     public int b() {
-        return b;
+        return gammaCorrection[b];
     }
 
     public Color interpolate(Color other, double value) {