/* * 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 * MICROSYSTEMS, 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.BorderLayout; import java.awt.Frame; import java.util.Random; import javax.media.opengl.GLProfile; import javax.media.opengl.DebugGL2; import javax.media.opengl.GL2ES1; import javax.media.opengl.GL2; import javax.media.opengl.GLAutoDrawable; import javax.media.opengl.GLEventListener; import javax.media.opengl.awt.GLCanvas; /** A simple demonstration of sharing of display lists between drawables. */ public class TestContextSharing { static { GLProfile.initSingleton(); } private int gearDisplayList; private Frame delayedFrame; public static void main(String[] args) { new TestContextSharing().run(args); } public void run(String[] args) { GLCanvas canvas1 = new GLCanvas(); 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 = new GLCanvas(null, null, canvas1.getContext(), null); 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.setVisible(true); new Thread(new Runnable() { public void run() { try { Thread.sleep(1000); } catch (InterruptedException e) { } System.err.println("Showing other frame"); delayedFrame.pack(); delayedFrame.setVisible(true); delayedFrame.setLocation(256, 0); } }).start(); } class Listener implements GLEventListener { public void init(GLAutoDrawable drawable) { GL2 gl = drawable.getGL().getGL2(); drawable.setGL(new DebugGL2(gl)); float pos[] = { 5.0f, 5.0f, 10.0f, 0.0f }; gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_POSITION, pos, 0); gl.glEnable(GL2.GL_CULL_FACE); gl.glEnable(GL2.GL_LIGHTING); gl.glEnable(GL2.GL_LIGHT0); gl.glEnable(GL2.GL_DEPTH_TEST); initializeDisplayList(gl); gl.glEnable(GL2.GL_NORMALIZE); } public void dispose(GLAutoDrawable drawable) { } public void display(GLAutoDrawable drawable) { GL2 gl = drawable.getGL().getGL2(); gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT); System.err.println("Drawing display list " + gearDisplayList); gl.glCallList(gearDisplayList); } public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { GL2 gl = drawable.getGL().getGL2(); float h = (float)height / (float)width; gl.glMatrixMode(GL2.GL_PROJECTION); gl.glLoadIdentity(); gl.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f); gl.glMatrixMode(GL2.GL_MODELVIEW); gl.glLoadIdentity(); gl.glTranslatef(0.0f, 0.0f, -40.0f); } // Unused routines public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {} } private synchronized void initializeDisplayList(GL2 gl) { if (gearDisplayList != 0) { return; } gearDisplayList = gl.glGenLists(1); gl.glNewList(gearDisplayList, GL2.GL_COMPILE); float red[] = { 0.8f, 0.1f, 0.0f, 1.0f }; gl.glMaterialfv(GL2.GL_FRONT, GL2.GL_AMBIENT_AND_DIFFUSE, red, 0); gear(gl, 1.0f, 4.0f, 1.0f, 20, 0.7f); gl.glEndList(); } private void gear(GL2 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(GL2.GL_FLAT); gl.glNormal3f(0.0f, 0.0f, 1.0f); /* draw front face */ gl.glBegin(GL2.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(GL2.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(GL2.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(GL2.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(GL2.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(GL2.GL_SMOOTH); /* draw inside radius cylinder */ gl.glBegin(GL2.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(); } }