Example usage for java.awt.image DirectColorModel getComponents

Introduction

In this page you can find the example usage for java.awt.image DirectColorModel getComponents.

Prototype

public final int[] getComponents(Object pixel, int[] components, int offset) 

Source Link

Document

Returns an array of unnormalized color/alpha components given a pixel in this ColorModel .

Usage

From source file:SampleAWTRenderer.java

private int[] processImage(Buffer buf) {
    int[] data = (int[]) buf.getData();
    int[] ret = new int[data.length];
    RGBFormat fmt = (RGBFormat) buf.getFormat();

    DirectColorModel dcm = new DirectColorModel(fmt.getBitsPerPixel(), fmt.getRedMask(), fmt.getGreenMask(),
            fmt.getBlueMask());/*from w  w  w.  j  ava2s .  c o m*/
    int[] rgb;
    int k;
    for (int i = 0; i < data.length; i++) {
        rgb = dcm.getComponents(data[i], null, 0);
        k = toGray(rgb);
        rgb[0] = rgb[1] = rgb[2] = k;
        ret[i] = dcm.getDataElement(rgb, 0);
    }
    return ret;
}

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