get Color Shade Comparison - Android Graphics

Android examples for Graphics:Color Operation

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Description

get Color Shade Comparison

Demo Code


public class Main {
  /**/*from   w  ww .j a v  a 2 s. c  om*/
   * ((r2 - r1)2 + (g2 - g1)2 + (b2 - b1)2)1/2
   */
  public static double getColorShadeComparison(int inputColor, int comparisonColor) {
    int inputColorRed = getRedFromColor(inputColor);
    int inputColorGreen = getGreenFromColor(inputColor);
    int inputColorBlue = getBlueFromColor(inputColor);

    int comparisonColorRed = getRedFromColor(comparisonColor);
    int comparisonColorGreen = getGreenFromColor(comparisonColor);
    int comparisonColorBlue = getBlueFromColor(comparisonColor);

    return Math.pow((Math.pow((comparisonColorRed - inputColorRed), 2f)
        + Math.pow((comparisonColorGreen - inputColorGreen), 2f) + Math.pow(comparisonColorBlue - inputColorBlue, 2f)),
        0.5f);
  }

  public static int getRedFromColor(int color) {
    return (color >> 16) & 0xFF;
  }

  public static int getGreenFromColor(int color) {
    return (color >> 8) & 0xFF;
  }

  public static int getBlueFromColor(int color) {
    return color & 0xFF;
  }
}

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