Gets whether or not the given rgb values are closer in distance to black than white. - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

Gets whether or not the given rgb values are closer in distance to black than white.

Demo Code


//package com.java2s;
import java.awt.Color;

public class Main {
    /**/*from w  w w.  j av a 2  s.c o m*/
     * Gets whether or not the given rgb values are closer in distance to black than white.
     * @param r The red value of the color.
     * @param g The green value of the color.
     * @param b The blue value of the color.
     * @return <tt>true</tt> if the given color is closer to black than white.
     */
    public static boolean isDark(final int r, final int g, final int b) {
        return getDistance(r, g, b, 0, 0, 0) > getDistance(r, g, b, 255,
                255, 255);
    }

    /**
     * Gets whether or not the given color is closer in distance to black than white.
     * @param c The color to check.
     * @return <tt>true</tt> if the given color is closer to black than white.
     */
    public static boolean isDark(final Color c) {
        return isDark(c.getRed(), c.getGreen(), c.getBlue());
    }

    /**
     * Gets the "distance" between two colors, returning between 0 and 255.
     * @param r1 Red value of the first color.
     * @param g1 Green value of the first color.
     * @param b1 Blue value of the first color.
     * @param r2 Red value of the second color.
     * @param g2 Green value of the second color.
     * @param b2 Blue value of the second color.
     * @return The "distance" between the two colors.
     */
    public static int getDistance(int r1, int g1, int b1, int r2, int g2,
            int b2) {
        int red = Math.abs(r2 - r1);
        int green = Math.abs(g2 - g1);
        int blue = Math.abs(b2 - b1);
        return (red + green + blue) / 3;
    }

    /**
     * Gets the "distance" between two colors, returning between 0 and 255.
     * @param c1 The first color.
     * @param c2 The second Color.
     * @return The "distance" between the two colors.
     */
    public static int getDistance(final Color c1, final Color c2) {
        return getDistance(c1.getRed(), c1.getGreen(), c1.getBlue(),
                c2.getRed(), c2.getGreen(), c2.getBlue());
    }

    /**
     * Gets the "distance" between two colors, returning between 0 and 255.
     * @param rgb1 The RGB values of the first color.
     * @param rgb2 The RGB values of the second color.
     * @return The "distance" between the two colors.
     */
    public static int getDistance(final int[] rgb1, final int[] rgb2) {
        return getDistance(rgb1[0], rgb1[1], rgb1[2], rgb2[0], rgb2[1],
                rgb2[2]);
    }

    /**
     * Gets the "distance" between two colors, returning between 0 and 255.
     * @param rgb1 The RGB value of the first color.
     * @param rgb2 The RGB value of the second color.
     * @return The "distance" between the two colors.
     */
    public static int getDistance(final int rgb1, final int rgb2) {
        return getDistance(new Color(rgb1), new Color(rgb2));
    }
}

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