First commit

Former-commit-id: 9340873f9cfb15264004c32d6e4b8f8bd6828d94
Former-commit-id: 1916747c109876aa064412e01204c3aeda9bbbc0

src/com/Torvald/ColourUtil/Col12.java

@@ -0,0 +1,48 @@
+package com.Torvald.ColourUtil;
+
+import org.newdawn.slick.Color;
+
+/**
+ * Created by minjaesong on 16-01-23.
+ */
+public class Col12 {
+
+    private short data;
+
+    /**
+     * Create new Col12 format
+     * @param data 0x000-0xFFF, in RGB
+     */
+    public Col12(int data) {
+        this.data = (short) data;
+    }
+
+    public Color create(int i) {
+        if (i > 0xFFF || i < 0) {
+            throw new IllegalArgumentException("Colour range: #000 - #FFF");
+        }
+        int r = (i & 0xF00) >> 8;
+        int g = (i & 0x0F0) >> 4;
+        int b = i & 0x00F;
+
+        return new Color(
+                (r << 4) | r
+                , (g << 4) | g
+                , (b << 4) | b
+        );
+    }
+
+    public byte[] toByteArray() {
+        byte[] ret = new byte[3];
+        int r = (data & 0xF00) >> 8;
+        int g = (data & 0x0F0) >> 4;
+        int b = data & 0x00F;
+
+        ret[0] = (byte) ((r << 4) | r);
+        ret[1] = (byte) ((g << 4) | g);
+        ret[2] = (byte) ((b << 4) | b);
+
+        return ret;
+    }
+
+}

src/com/Torvald/ColourUtil/HSV.java

@@ -0,0 +1,76 @@
+package com.Torvald.ColourUtil;
+
+import com.jme3.math.FastMath;
+import org.newdawn.slick.Color;
+
+/**
+ * Created by minjaesong on 16-01-16.
+ */
+public class HSV {
+
+    /**
+     * Convert HSV parameters to RGB color.
+     * @param h 0-359 Hue
+     * @param s 0-255 Saturation
+     * @param v 0-255 Value
+     * @return org.newdawn.slick.Color
+     * @link http://www.rapidtables.com/convert/color/hsv-to-rgb.htm
+     */
+    public static Color toRGB(int h, int s, int v) {
+        int H = h;
+        if (H < 0 || H >= 360) {
+            H %= 360;
+        }
+
+        float S = s / 255f;
+        float V = v / 255f;
+
+        float C = V * S;
+        float X = C * (1 - FastMath.abs(
+                (H / 60f) % 2 - 1
+        ));
+        float m = V - C;
+
+        float R_prime = Float.NaN;
+        float G_prime = Float.NaN;
+        float B_prime = Float.NaN;
+
+        if (H < 60) {
+            R_prime = C;
+            G_prime = X;
+            B_prime = 0;
+        }
+        else if (H < 120) {
+            R_prime = X;
+            G_prime = C;
+            B_prime = 0;
+        }
+        else if (H < 180) {
+            R_prime = 0;
+            G_prime = C;
+            B_prime = X;
+        }
+        else if (H < 240) {
+            R_prime = 0;
+            G_prime = X;
+            B_prime = C;
+        }
+        else if (H < 300) {
+            R_prime = X;
+            G_prime = 0;
+            B_prime = C;
+        }
+        else if (H < 360) {
+            R_prime = C;
+            G_prime = 0;
+            B_prime = X;
+        }
+
+        return new Color(
+                (int) ((R_prime + m) * 255)
+                , (int) ((G_prime + m) * 255)
+                , (int) ((B_prime + m) * 255)
+        );
+    }
+
+}