Creates a new darker version of a color by blending it with black. - Java 2D Graphics

Java examples for 2D Graphics:Color

  1. HOME
  2. Java
  3. 2D Graphics
  4. Color

Description

Creates a new darker version of a color by blending it with black.

Demo Code


import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.Rectangle2D;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
import java.util.LinkedList;
import java.util.List;

public class Main{
    /**/*www .  j  a  v a2  s .c  o m*/
     * Creates a new darker version of a color by blending it with black. The
     * derived color has the same alpha value as the original color.
     *
     * @param color Original color.
     * @return Darker color with same alpha value.
     */
    public static Color deriveDarker(Color color) {
        return deriveWithAlpha(blend(color, Color.BLACK, 0.5),
                color.getAlpha());
    }
    /**
     * Creates a new color with the same color components but a different
     * alpha value.
     *
     * @param color Original color.
     * @param alpha Alpha value for new color.
     * @return New color with specified alpha value.
     */
    public static Color deriveWithAlpha(Color color, int alpha) {
        return new Color(color.getRed(), color.getGreen(), color.getBlue(),
                alpha);
    }
    /**
     * Linearly blends two colors with a defined weight.
     *
     * @param color1 First color.
     * @param color2 Second color.
     * @param weight Weighting factor in the range 0 to 1 (0 means color1, 1
     *               means second color)
     * @return New blended color
     */
    public static Color blend(Color color1, Color color2, double weight) {
        double w2 = MathUtils.limit(weight, 0.0, 1.0);
        double w1 = 1.0 - w2;
        int r = (int) Math.round(w1 * color1.getRed() + w2
                * color2.getRed());
        int g = (int) Math.round(w1 * color1.getGreen() + w2
                * color2.getGreen());
        int b = (int) Math.round(w1 * color1.getBlue() + w2
                * color2.getBlue());
        int a = (int) Math.round(w1 * color1.getAlpha() + w2
                * color2.getAlpha());
        return new Color(r, g, b, a);
    }
}

Related Tutorials