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package glredbook12x;
import glredbook10.GLSkeleton;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseWheelListener;
import java.nio.ByteBuffer;
import javax.media.opengl.*;
import javax.swing.JFrame;
import com.sun.opengl.util.BufferUtil;
import javax.media.opengl.awt.GLJPanel;
import javax.media.opengl.glu.GLU;
/**
*
* @author Kiet Le (Java port) Ported to JOGL 2.x by Claudio Eduardo Goes
*/
public class multitex //
extends GLSkeleton<GLJPanel>
implements GLEventListener, KeyListener {
private GLU glu;
// private byte[][][] texels0 = new byte[32][32][4];
// private byte[][][] texels1 = new byte[16][16][4];
private ByteBuffer texelsBuf0 = BufferUtil.newByteBuffer(32 * 32 * 4);
private ByteBuffer texelsBuf1 = BufferUtil.newByteBuffer(16 * 16 * 4);
@Override
protected GLJPanel createDrawable() {
GLCapabilities caps = new GLCapabilities(null);
//
GLJPanel panel = new GLJPanel(caps);
panel.addGLEventListener(this);
panel.addKeyListener(this);
return panel;
}
public static void main(String[] args) {
GLCapabilities caps = new GLCapabilities(null);
GLJPanel canvas = new GLJPanel(caps);
multitex demo = new multitex();
canvas.addGLEventListener(demo);
if (demo instanceof KeyListener)
canvas.addKeyListener(demo);
// explicit cast for class not impl'ing listeners
// to make it compile,
if (demo instanceof MouseListener)
canvas.addMouseListener((MouseListener) demo);
if (demo instanceof MouseMotionListener)
canvas.addMouseMotionListener((MouseMotionListener) demo);
if (demo instanceof MouseWheelListener)
canvas.addMouseWheelListener((MouseWheelListener) demo);
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("multitex");
frame.setSize(512, 512);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(canvas);
frame.setVisible(true);
canvas.requestFocusInWindow();
}
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
glu = new GLU();
//
int texNames[] = new int[2];
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glShadeModel(GL2.GL_FLAT);
gl.glEnable(GL.GL_DEPTH_TEST);
makeCheckImages();
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
gl.glGenTextures(2, texNames, 0);
gl.glBindTexture(GL2.GL_TEXTURE_2D, texNames[0]);
gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, GL2.GL_RGBA, //
32, 32, 0, GL2.GL_RGBA, GL.GL_UNSIGNED_BYTE, texelsBuf0);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
gl
.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_S,
GL2.GL_REPEAT);
gl
.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_T,
GL2.GL_REPEAT);
gl.glBindTexture(GL2.GL_TEXTURE_2D, texNames[1]);
gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, GL2.GL_RGBA, //
16, 16, 0, GL2.GL_RGBA, GL.GL_UNSIGNED_BYTE, texelsBuf1);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_WRAP_S, GL2.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, //
GL2.GL_TEXTURE_WRAP_T, GL2.GL_CLAMP_TO_EDGE);
/*
* Use the two texture objects to define two texture units for use in
* multitexturing
*/
// gl.glActiveTextureARB(GL2.GL_TEXTURE0_ARB);// deprecated
gl.glActiveTexture(GL2.GL_TEXTURE0);
gl.glEnable(GL2.GL_TEXTURE_2D);
gl.glBindTexture(GL2.GL_TEXTURE_2D, texNames[0]);
gl.glTexEnvi(GL2.GL_TEXTURE_ENV, //
GL2.GL_TEXTURE_ENV_MODE, GL2.GL_REPLACE);
gl.glMatrixMode(GL2.GL_TEXTURE);
gl.glLoadIdentity();
gl.glTranslatef(0.5f, 0.5f, 0.0f);
gl.glRotatef(45.0f, 0.0f, 0.0f, 1.0f);
gl.glTranslatef(-0.5f, -0.5f, 0.0f);
gl.glMatrixMode(GL2.GL_MODELVIEW);
// gl.glActiveTextureARB (GL2.GL_TEXTURE1_ARB); deprecated
gl.glActiveTexture(GL2.GL_TEXTURE1);
gl.glEnable(GL2.GL_TEXTURE_2D);
gl.glBindTexture(GL2.GL_TEXTURE_2D, texNames[1]);
gl.glTexEnvi(GL2.GL_TEXTURE_ENV, //
GL2.GL_TEXTURE_ENV_MODE, GL2.GL_MODULATE);
}
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glBegin(GL2.GL_TRIANGLES);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 0.0f, 0.0f);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE1, 1.0f, 0.0f);
gl.glVertex2f(0.0f, 0.0f);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 0.5f, 1.0f);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE1, 0.5f, 0.0f);
gl.glVertex2f(50.0f, 100.0f);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 1.0f, 0.0f);
gl.glMultiTexCoord2f(GL2.GL_TEXTURE1, 1.0f, 1.0f);
gl.glVertex2f(100.0f, 0.0f);
gl.glEnd();
gl.glFlush();
}
public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glViewport(0, 0, w, h);
gl.glMatrixMode(GL2.GL_PROJECTION);
gl.glLoadIdentity();
if (w <= h)
glu.gluOrtho2D(0.0, 100.0, //
0.0, 100.0 * (double) h / (double) w);
else
glu.gluOrtho2D(0.0, 100.0 * (double) w / (double) h, 0.0, 100.0);
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
boolean deviceChanged) {
}
void makeCheckImages() {
for (int i = 0; i < 32; i++) {
for (int j = 0; j < 32; j++) {
// texels0[i][j][0] = (byte) i;
// texels0[i][j][1] = (byte) j;
// texels0[i][j][2] = (byte) ((i*j)/255);
// texels0[i][j][3] = (byte) 255;
// changed from above for more visible result
texelsBuf0.put((byte) (i * i * i));
texelsBuf0.put((byte) (j * j * j));
texelsBuf0.put((byte) ((i * j) / 255));
texelsBuf0.put((byte) 0xFF);
}
}
for (int i = 0; i < 16; i++) {
for (int j = 0; j < 16; j++) {
// texels1[i][j][0] = (byte) 255;
// texels1[i][j][1] = (byte) i;
// texels1[i][j][2] = (byte) j;
// texels1[i][j][3] = (byte) 255;
// changed from above for more visible result
texelsBuf1.put((byte) 0xFF);
texelsBuf1.put((byte) (i * i));
texelsBuf1.put((byte) (j * j));
texelsBuf1.put((byte) 0xFF);
}
}
texelsBuf0.rewind();
texelsBuf1.rewind();
}
public void keyTyped(KeyEvent key) {
}
public void keyPressed(KeyEvent key) {
switch (key.getKeyCode()) {
case KeyEvent.VK_ESCAPE:
System.exit(0);
break;
default:
break;
}
}
public void keyReleased(KeyEvent key) {
}
public void dispose(GLAutoDrawable arg0) {
}
}
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