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package com.jogamp.opengl.util;
import javax.media.opengl.GL2ES3;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
/**
* See {@link TileRenderer}.
* <p>
* Enhanced for {@link GLAutoDrawable} usage.
* </p>
*/
public class TileRenderer2 extends TileRenderer {
private GLAutoDrawable glad;
private GLEventListener[] listeners;
private boolean[] listenersInit;
/**
* Creates a new TileRenderer object
*/
public TileRenderer2() {
glad = null;
listeners = null;
listenersInit = null;
}
/**
*
* <p>
* Sets the size of the tiles to use in rendering. The actual
* effective size of the tile depends on the border size, ie (
* width - 2*border ) * ( height - 2 * border )
* </p>
* @param glad
* @param border
* The width of the borders on each tile. This is needed
* to avoid artifacts when rendering lines or points with
* thickness > 1.
* @throws IllegalStateException if an {@link GLAutoDrawable} is already attached
*/
public void attachAutoDrawable(GLAutoDrawable glad, int border, PMVMatrixCallback pmvMatrixCB) throws IllegalStateException {
if( null != this.glad ) {
throw new IllegalStateException("GLAutoDrawable already attached");
}
this.glad = glad;
setTileSize(glad.getWidth(), glad.getHeight(), border);
setPMVMatrixCallback(pmvMatrixCB);
final int aSz = glad.getGLEventListenerCount();
listeners = new GLEventListener[aSz];
listenersInit = new boolean[aSz];
for(int i=0; i<aSz; i++) {
final GLEventListener l = glad.getGLEventListener(0);
listenersInit[i] = glad.getGLEventListenerInitState(l);
listeners[i] = glad.removeGLEventListener( l );
}
glad.addGLEventListener(tiledGLEL);
}
public void detachAutoDrawable() {
if( null != glad ) {
glad.removeGLEventListener(tiledGLEL);
final int aSz = listenersInit.length;
for(int i=0; i<aSz; i++) {
final GLEventListener l = listeners[i];
glad.addGLEventListener(l);
glad.setGLEventListenerInitState(l, listenersInit[i]);
}
listeners = null;
listenersInit = null;
glad = null;
pmvMatrixCB = null;
}
}
/**
* Rendering one tile, by simply calling {@link GLAutoDrawable#display()}.
*
* @return true if there are more tiles to be rendered, false if the final image is complete
* @throws IllegalStateException if no {@link GLAutoDrawable} is {@link #attachAutoDrawable(GLAutoDrawable, int) attached}
* or imageSize is not set
*/
public boolean display() throws IllegalStateException {
if( null == glad ) {
throw new IllegalStateException("No GLAutoDrawable attached");
}
glad.display();
return !eot();
}
private final GLEventListener tiledGLEL = new GLEventListener() {
@Override
public void init(GLAutoDrawable drawable) {
final int aSz = listenersInit.length;
for(int i=0; i<aSz; i++) {
final GLEventListener l = listeners[i];
l.init(drawable);
listenersInit[i] = true;
}
}
@Override
public void dispose(GLAutoDrawable drawable) {
final int aSz = listenersInit.length;
for(int i=0; i<aSz; i++) {
listeners[i].dispose(drawable);
}
}
@Override
public void display(GLAutoDrawable drawable) {
final GL2ES3 gl = drawable.getGL().getGL2ES3();
beginTile(gl);
final int aSz = listenersInit.length;
for(int i=0; i<aSz; i++) {
listeners[i].display(drawable);
}
endTile(gl);
}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
final int aSz = listenersInit.length;
for(int i=0; i<aSz; i++) {
listeners[i].reshape(drawable, x, y, width, height);
}
}
};
}
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