imagetexture.java

Java mulitplayer strategy game. Adaptation of KDE Galaxy Conquest. (rules are changed - but still th

package net.sf.jawp.gui.client.semi3d;

import java.awt.Image;
import java.awt.image.PixelGrabber;

/**
 * 
 * @author from javaworld
 * @version $Revision: 1.3 $
 *
 */
public class ImageTexture implements Texture
{
	int[] imagePixels;

	int imageWidth, imageHeight;

	final float shift;

	public ImageTexture(final Image image, final int width, final int height, final float sh)
			throws InterruptedException
	{
		final PixelGrabber grabber = new PixelGrabber(image, 0, 0, width, height,
				true);
		if (!grabber.grabPixels())
		{
			throw new IllegalArgumentException(
					"Invalid image; pixel grab failed.");
		}
		imagePixels = (int[]) grabber.getPixels();
		imageWidth = grabber.getWidth();
		imageHeight = grabber.getHeight();
		this.shift = sh;
	}

	public RGB getTexel(final double i, final double j)
	{
		final double i2 = i -  Math.floor(i) + shift;
		final double j2 = j - Math.floor(j);

		return new RGB(imagePixels[(int) (i2 * imageWidth) + imageWidth
				* (int) (j2 * imageHeight)]);
	}
}