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/*
* Copyright (c) 2006 Ben Chappell. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* The names of Ben Chappell, Sun Microsystems, Inc. or the names of
* contributors may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. BEN CHAPPELL,
* SUN MICROSYSTEMS, INC. ("SUN"), AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL BEN
* CHAPPELL, SUN, OR SUN'S LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT
* OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
* PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF BEN
* CHAPPELL OR SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*/
package demos.particles.engine;
import com.jogamp.opengl.*;
import com.jogamp.opengl.fixedfunc.GLLightingFunc;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import com.jogamp.opengl.glu.*;
import com.jogamp.opengl.awt.*;
import com.jogamp.opengl.math.FloatUtil;
import com.jogamp.opengl.util.FPSAnimator;
public class GLComponent extends GLCanvas implements GLEventListener {
private final GLU glu;
private FPSAnimator animator;
private final RGBA background;
private final RGBA ambient;
private Engine engine;
public GLComponent(final int fps, final RGBA ambient, final RGBA background, final Engine engine) {
super(getCapabilities());
addGLEventListener(this);
glu = new GLU();
this.background=background;
this.ambient=ambient;
this.engine=engine;
animator = new FPSAnimator(this, fps);
}
private static GLCapabilities getCapabilities() {
final GLCapabilities caps = new GLCapabilities(null);
caps.setDoubleBuffered(true);
caps.setHardwareAccelerated(true);
return caps;
}
public void dispose(final GLAutoDrawable drawable) {
this.engine=null;
}
public void display(final GLAutoDrawable drawable) {
final GL2 gl = drawable.getGL().getGL2();
engine.draw(gl);
}
public void displayChanged(final GLAutoDrawable drawable, final boolean modeChanged, final boolean deviceChanged) {
}
public void init(final GLAutoDrawable drawable) {
final GL2 gl = drawable.getGL().getGL2();
gl.glShadeModel(GLLightingFunc.GL_SMOOTH);
// Set the background / clear color.
gl.glClearColor(background.r, background.g, background.b, background.a);
// Clear the depth
gl.glClearDepth(1.0);
// Disable depth testing.
gl.glDisable(GL.GL_DEPTH_TEST);
// Enable blending and specify blening function.
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE);
// Get nice perspective calculations.
gl.glHint(GL2ES1.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
// Nice point smoothing.
gl.glHint(GL2ES1.GL_POINT_SMOOTH_HINT, GL.GL_NICEST);
// Enable texture mapping.
gl.glEnable(GL.GL_TEXTURE_2D);
animator.start();
engine.init(gl);
}
public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
final GL2 gl = drawable.getGL().getGL2();
// the size of openGL
gl.glViewport(0,0, width, height);
// perspective view (smaller for further behind)
gl.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
gl.glLoadIdentity();
// perspective
final double ratio = (double)width/(double)height;
// angle, ratio, nearest, farthest
glu.gluPerspective(45.0, ratio, FloatUtil.EPSILON, 1.0);
// draw into the model matrix now
gl.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void setFPS(final int fps) {
animator.stop();
animator = new FPSAnimator(this, fps);
animator.start();
}
public void kill() {
animator.stop();
}
}
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