/*
* Copyright (c) 2003 Sun Microsystems, Inc. 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may 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. SUN
* MIDROSYSTEMS, INC. ("SUN") AND ITS 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 SUN OR
* ITS 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
* 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.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package demos.testContextSharing;
import java.awt.*;
import java.util.*;
import net.java.games.jogl.*;
/** A simple demonstration of sharing of display lists between drawables. */
public class TestContextSharing {
private int gearDisplayList;
private Frame delayedFrame;
public static void main(String[] args) {
new TestContextSharing().run(args);
}
public void run(String[] args) {
GLCanvas canvas1 = GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
canvas1.addGLEventListener(new Listener());
canvas1.setSize(256, 256);
Frame frame1 = new Frame("Canvas 1");
frame1.setLayout(new BorderLayout());
frame1.add(canvas1, BorderLayout.CENTER);
GLCanvas canvas2 = GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities(), canvas1);
canvas2.addGLEventListener(new Listener());
canvas2.setSize(256, 256);
Frame frame2 = new Frame("Canvas 2");
frame2.setLayout(new BorderLayout());
frame2.add(canvas2, BorderLayout.CENTER);
Random random = new Random(System.currentTimeMillis());
Frame frame;
if (random.nextBoolean()) {
frame = frame1;
delayedFrame = frame2;
} else {
frame = frame2;
delayedFrame = frame1;
}
System.err.println("Showing first frame");
frame.pack();
frame.show();
new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
System.err.println("Showing other frame");
delayedFrame.pack();
delayedFrame.show();
delayedFrame.setLocation(256, 0);
}
}).start();
}
class Listener implements GLEventListener {
public void init(GLDrawable drawable) {
drawable.setGL(new DebugGL(drawable.getGL()));
GL gl = drawable.getGL();
float pos[] = { 5.0f, 5.0f, 10.0f, 0.0f };
gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, pos);
gl.glEnable(GL.GL_CULL_FACE);
gl.glEnable(GL.GL_LIGHTING);
gl.glEnable(GL.GL_LIGHT0);
gl.glEnable(GL.GL_DEPTH_TEST);
initializeDisplayList(gl);
gl.glEnable(GL.GL_NORMALIZE);
}
public void display(GLDrawable drawable) {
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
System.err.println("Drawing display list " + gearDisplayList);
gl.glCallList(gearDisplayList);
}
public void reshape(GLDrawable drawable, int x, int y, int width, int height) {
GL gl = drawable.getGL();
float h = (float)height / (float)width;
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -40.0f);
}
// Unused routines
public void displayChanged(GLDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
}
private synchronized void initializeDisplayList(GL gl) {
if (gearDisplayList != 0) {
return;
}
gearDisplayList = gl.glGenLists(1);
gl.glNewList(gearDisplayList, GL.GL_COMPILE);
float red[] = { 0.8f, 0.1f, 0.0f, 1.0f };
gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE, red);
gear(gl, 1.0f, 4.0f, 1.0f, 20, 0.7f);
gl.glEndList();
}
private void gear(GL gl,
float inner_radius,
float outer_radius,
float width,
int teeth,
float tooth_depth)
{
int i;
float r0, r1, r2;
float angle, da;
float u, v, len;
r0 = inner_radius;
r1 = outer_radius - tooth_depth / 2.0f;
r2 = outer_radius + tooth_depth / 2.0f;
da = 2.0f * (float) Math.PI / teeth / 4.0f;
gl.glShadeModel(GL.GL_FLAT);
gl.glNormal3f(0.0f, 0.0f, 1.0f);
/* draw front face */
gl.glBegin(GL.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
if(i < teeth)
{
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f);
}
}
gl.glEnd();
/* draw front sides of teeth */
gl.glBegin(GL.GL_QUADS);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2.0f * da), r2 * (float)Math.sin(angle + 2.0f * da), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f);
}
gl.glEnd();
/* draw back face */
gl.glBegin(GL.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
}
gl.glEnd();
/* draw back sides of teeth */
gl.glBegin(GL.GL_QUADS);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
}
gl.glEnd();
/* draw outward faces of teeth */
gl.glBegin(GL.GL_QUAD_STRIP);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
u = r2 * (float)Math.cos(angle + da) - r1 * (float)Math.cos(angle);
v = r2 * (float)Math.sin(angle + da) - r1 * (float)Math.sin(angle);
len = (float)Math.sqrt(u * u + v * v);
u /= len;
v /= len;
gl.glNormal3f(v, -u, 0.0f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f);
gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f);
u = r1 * (float)Math.cos(angle + 3 * da) - r2 * (float)Math.cos(angle + 2 * da);
v = r1 * (float)Math.sin(angle + 3 * da) - r2 * (float)Math.sin(angle + 2 * da);
gl.glNormal3f(v, -u, 0.0f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f);
}
gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), -width * 0.5f);
gl.glEnd();
gl.glShadeModel(GL.GL_SMOOTH);
/* draw inside radius cylinder */
gl.glBegin(GL.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glNormal3f(-(float)Math.cos(angle), -(float)Math.sin(angle), 0.0f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
}
gl.glEnd();
}
}