A convenience method for getting ARGB pixels from an image. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Pixel

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Description

A convenience method for getting ARGB pixels from an image.

Demo Code


//package com.java2s;

import java.awt.image.*;

public class Main {
    /**//ww w  . j ava2 s .  com
     * A convenience method for getting ARGB pixels from an image. This tries to avoid the performance
     * penalty of BufferedImage.getRGB unmanaging the image.
     * @param image   a BufferedImage object
     * @param x       the left edge of the pixel block
     * @param y       the right edge of the pixel block
     * @param width   the width of the pixel arry
     * @param height  the height of the pixel arry
     * @param pixels  the array to hold the returned pixels. May be null.
     * @return the pixels
     * @see #setRGB
     */
    public static int[] getRGB(BufferedImage image, int x, int y,
            int width, int height, int[] pixels) {
        int type = image.getType();
        if (type == BufferedImage.TYPE_INT_ARGB
                || type == BufferedImage.TYPE_INT_RGB)
            return (int[]) image.getRaster().getDataElements(x, y, width,
                    height, pixels);
        return image.getRGB(x, y, width, height, pixels, 0, width);
    }
}

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