TexI.java

/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.awt.Graphics;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.nio.ByteBuffer;
import javax.media.opengl.GL;

public class TexI extends TexGL {
	public static ComponentColorModel glcm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), new int[] { 8, 8, 8, 8 }, true,
			false, ComponentColorModel.TRANSLUCENT, DataBuffer.TYPE_BYTE);
	protected byte[] pixels;
	public BufferedImage back;
	private int fmt = GL.GL_RGBA;

	public TexI(BufferedImage img) {
		super(Utils.imgsz(img));
		back = img;
		pixels = convert(img, tdim);
	}

	public TexI(Coord sz) {
		super(sz);
		pixels = new byte[tdim.x * tdim.y * 4];
	}

	protected void fill(GOut g) {
		GL gl = g.gl;
		ByteBuffer data = ByteBuffer.wrap(pixels);
		gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, fmt, tdim.x, tdim.y, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, data);
	}

	protected void update(byte[] n) {
		if (n.length != pixels.length)
			throw (new RuntimeException("Illegal new texbuf size (" + n.length + " != " + pixels.length + ")"));
		pixels = n;
		dispose();
	}

	public int getRGB(Coord c) {
		return (back.getRGB(c.x, c.y));
	}

	public TexI mkmask() {
		TexI n = new TexI(dim);
		n.pixels = new byte[pixels.length];
		System.arraycopy(pixels, 0, n.pixels, 0, pixels.length);
		n.fmt = GL.GL_ALPHA;
		return (n);
	}

	public static BufferedImage mkbuf(Coord sz) {
		WritableRaster buf = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, sz.x, sz.y, 4, null);
		BufferedImage tgt = new BufferedImage(glcm, buf, false, null);
		return (tgt);
	}

	public static byte[] convert(BufferedImage img, Coord tsz) {
		WritableRaster buf = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, tsz.x, tsz.y, 4, null);
		BufferedImage tgt = new BufferedImage(glcm, buf, false, null);
		Graphics g = tgt.createGraphics();
		g.drawImage(img, 0, 0, null);
		g.dispose();
		return (((DataBufferByte) buf.getDataBuffer()).getData());
	}
}