different Color - Java 2D Graphics

Java examples for 2D Graphics:Color

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Description

different Color

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int a = 2;
        int b = 2;
        boolean yuv = true;
        System.out.println(diffCol(a, b, yuv));
    }//  ww w  .  j  av a2  s.  co  m

    public static int diffCol(int a, int b, boolean yuv) { //http://www.compuphase.com/cmetric.htm
        if (yuv) {
            return (int) Math
                    .sqrt(((getY(a) - getY(b)) * (getY(a) - getY(b)))
                            + ((getU(a) - getU(b)) * (getU(a) - getU(b)))
                            + ((getV(a) - getV(b)) * (getV(a) - getV(b))));
        } else {
            return (int) Math.sqrt(2
                    * ((getR(a) - getR(b)) * (getR(a) - getR(b))) + 4
                    * ((getG(a) - getG(b)) * (getG(a) - getG(b))) + 3
                    * ((getB(a) - getB(b)) * (getB(a) - getB(b))));
        }
    }

    public static int getY(int col) { //just for readability tbh -- same as RGB
        return (col >> 16) & 0xFF;
    }

    public static int getU(int col) {
        return (col >> 8) & 0xFF;
    }

    public static int getV(int col) {
        return (col & 0xFF);
    }

    public static int getR(int col) { //N.B. BGR?
        return (col >> 16) & 0xFF;
    }

    public static int getG(int col) {
        return (col >> 8) & 0xFF;
    }

    public static int getB(int col) {
        return (col & 0xFF);
    }
}

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