Incorporated Particle Engine demo contributed by Ben Chappell. Added

description and launch link to jogl-demos web page, currently
commented out in HTML until JSR-231 beta 5 is released.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@178 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 137 insertions, 0 deletions

diff --git a/src/demos/particles/engine/GLComponent.java b/src/demos/particles/engine/GLComponent.java
new file mode 100755
index 0000000..299578f
--- /dev/null
+++ b/src/demos/particles/engine/GLComponent.java
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+/*
+ * Copyright (c) 2006 Ben Chappell ([email protected]) 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 javax.media.opengl.*;
+import javax.media.opengl.glu.*;
+import com.sun.opengl.util.*;
+
+import java.io.*;
+
+public class GLComponent extends GLCanvas implements GLEventListener {
+    
+    private GLU glu;
+    private FPSAnimator animator;
+    private RGBA background;
+    private RGBA ambient;
+    private Engine engine;
+    
+    public GLComponent(int fps, RGBA ambient, RGBA background, 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() {
+        GLCapabilities caps = new GLCapabilities();
+        caps.setDoubleBuffered(true);
+        caps.setHardwareAccelerated(true);
+        return caps;
+    }
+    
+    public void display(GLAutoDrawable drawable) {
+        final GL gl = drawable.getGL(); 
+        engine.draw(gl);
+    }
+    
+    
+    
+    public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
+        
+    }
+    
+    public void init(GLAutoDrawable drawable) {
+        final GL gl = drawable.getGL();        
+
+        gl.glShadeModel(GL.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(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
+        // Nice point smoothing.
+        gl.glHint(GL.GL_POINT_SMOOTH_HINT, GL.GL_NICEST);
+        // Enable texture mapping.
+        gl.glEnable(GL.GL_TEXTURE_2D);
+        
+        animator.start();
+        
+        engine.init();
+        
+    }    
+    
+    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+        GL gl = drawable.getGL();
+        // the size of openGL
+        gl.glViewport(0,0, width, height);
+        
+        // perspective view (smaller for further behind)
+        gl.glMatrixMode(GL.GL_PROJECTION);
+        gl.glLoadIdentity();
+        
+        // perspective
+        double ratio = (double)width/(double)height;
+        // angle, ratio, nearest, farthest
+        glu.gluPerspective(45.0, ratio, 0.0,  1.0);
+        
+        // draw into the model matrix now
+        gl.glMatrixMode(GL.GL_MODELVIEW);
+        gl.glLoadIdentity();
+    }
+    
+    public void setFPS(int fps) {
+        animator.stop();
+        animator = new FPSAnimator(this, fps);
+        animator.start();
+    }
+    
+    public void kill() {
+        animator.stop();
+    }
+}