/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions 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 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.lwjgl.test.opengl.awt;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Label;
import java.awt.List;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.nio.FloatBuffer;
import java.util.Enumeration;
import java.util.Hashtable;
import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.AWTGLCanvas;
import org.lwjgl.opengl.GLContext;
import static org.lwjgl.opengl.ARBTransposeMatrix.*;
import static org.lwjgl.opengl.GL11.*;
/**
* <p>
* </p>
* @version $Revision$
* @author Brian Matzon <brian@matzon.dk>
* $Id$
*/
public class DemoBox extends Frame {
/** GL canvas */
private DemoBoxGLCanvas demoCanvas;
/** Demo selection panel */
private Panel selectionPanel;
/** Hashtable of demos */
private Hashtable<String, Demo> selectableDemos;
/**
* Creates a new demo box instance
*/
public DemoBox() {
selectableDemos = new Hashtable<String, Demo>();
selectableDemos.put("default", new NullDemoBox());
selectableDemos.put("clear_color", new ClearColorDemoBox());
selectableDemos.put("gears", new GearsDemoBox());
}
/**
* @return
*/
public boolean initialize() {
setTitle("LWJGL - Demo Box");
setSize(640, 480);
setLayout(new GridBagLayout());
// Setup selection panel
// =================================
selectionPanel = new Panel();
selectionPanel.setLayout(new BorderLayout());
selectionPanel.add(new Label("Demo", Label.CENTER), BorderLayout.NORTH);
Button fullScreen = new Button("Fullscreen");
fullScreen.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
toggleFullscreen();
}
});
selectionPanel.add(fullScreen, BorderLayout.SOUTH);
final List demos = new List();
for (Enumeration e = selectableDemos.keys(); e.hasMoreElements();) {
demos.add(e.nextElement().toString());
}
selectionPanel.add(demos, BorderLayout.CENTER);
demos.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent event) {
demoSelected(event.getItemSelectable().getSelectedObjects()[0].toString());
}
});
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = java.awt.GridBagConstraints.BOTH;
gbc.weightx = 0.05;
gbc.weighty = 1.0;
add(selectionPanel, gbc);
// ---------------------------------
// setup demo canvas
// =================================
try {
demoCanvas = new DemoBoxGLCanvas(this);
gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 0;
gbc.fill = java.awt.GridBagConstraints.BOTH;
gbc.weightx = 0.95;
gbc.weighty = 1.0;
add(demoCanvas, gbc);
} catch (LWJGLException le) {
le.printStackTrace();
return false;
}
// ---------------------------------
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
demoCanvas.destroyCanvas();
dispose();
System.exit(0);
}
});
//demos.select(0);
//demoSelected(demos.getSelectedItem());
return true;
}
public void updateFPS(float fps) {
if(fps != -1) {
setTitle("LWJGL - Demo Box (FPS: " + fps + ")");
} else {
setTitle("LWJGL - Demo Box");
}
}
/**
* Enter fullscreen mode for this demo
*/
protected void toggleFullscreen() {
System.out.println("Toggle Fullscreen");
}
/**
* Selected a demo
* @param demo Name of demo that was selected
*/
protected void demoSelected(String demo) {
System.out.println("Selecting demo: " + demo);
demoCanvas.setActiveDemo(selectableDemos.get(demo));
}
/**
* @param args
* @throws LWJGLException
*/
public static void main(String[] args) throws LWJGLException {
DemoBox demo = new DemoBox();
demo.initialize();
demo.setVisible(true);
}
/**
* Interface for a demo
*/
public interface Demo {
boolean isInitialized();
boolean initialize();
void render();
void destroy();
}
/**
*
*/
private class DemoBoxGLCanvas extends AWTGLCanvas implements Runnable {
/** Parent demo box */
DemoBox parent;
/** Currently active demo */
Demo activeDemo;
/** last active demo */
Demo lastActiveDemo;
/** Render thread */
private Thread renderThread;
private DemoBoxGLCanvas(DemoBox parent) throws LWJGLException {
super();
this.parent = parent;
}
// FPS
long startTime;
long fps;
protected void paintGL() {
synchronized (this) {
if (lastActiveDemo != null && lastActiveDemo != activeDemo) {
lastActiveDemo.destroy();
lastActiveDemo = null;
if (activeDemo != null) {
activeDemo.initialize();
startTime = System.currentTimeMillis() + 5000;
} else {
parent.updateFPS(-1);
}
}
if (activeDemo != null) {
if(!activeDemo.isInitialized()) {
activeDemo.initialize();
}
activeDemo.render();
try {
swapBuffers();
} catch (LWJGLException le) {
le.printStackTrace();
}
if (startTime > System.currentTimeMillis()) {
fps++;
} else {
long timeUsed = 5000 + (startTime - System.currentTimeMillis());
startTime = System.currentTimeMillis() + 5000;
parent.updateFPS((fps / (timeUsed / 1000f)));
fps = 0;
}
}
}
}
public void destroyCanvas() {
setActiveDemo(null);
renderThread = null;
}
public void setActiveDemo(Demo activeDemo) {
synchronized (this) {
// setting no current demo
if (activeDemo == null) {
lastActiveDemo = this.activeDemo;
this.activeDemo = null;
return;
}
// setting to new demo
lastActiveDemo = this.activeDemo;
this.activeDemo = activeDemo;
}
if (renderThread == null) {
renderThread = new Thread(this);
renderThread.setName("DemoBox-Renderer");
renderThread.start();
}
}
private DemoBoxGLCanvas() throws LWJGLException {
super();
}
public void run() {
long sleep_time = 1000;
while (renderThread != null) {
// check for change of demo
synchronized (this) {
// if no demo set, just sleep
if (activeDemo == null) {
sleep_time = 1000;
} else {
// we have a demo!
sleep_time = 16;
repaint();
}
}
sleep(sleep_time);
}
System.out.println("dead");
}
private void sleep(long time) {
try {
Thread.sleep(time);
} catch (InterruptedException inte) {
}
}
}
// Demo box demo
// ========================================================
public class ClearColorDemoBox implements Demo {
private boolean initialized;
int direction = 1;
float color;
public boolean isInitialized() {
return initialized;
}
public boolean initialize() {
return initialized = true;
}
public void render() {
glClearColor(color, color, color, 1f);
glClear(GL_COLOR_BUFFER_BIT);
color += direction * .05f;
if (color > 1f) {
color = 1f;
direction = -1 * direction;
} else if (color < 0f) {
direction = -1 * direction;
color = 0f;
}
}
public void destroy() {
initialized = false;
}
}
// --------------------------------------------------------
// Demo box demo
// ========================================================
public class NullDemoBox implements Demo {
private boolean initialized;
public boolean isInitialized() {
return initialized;
}
public boolean initialize() {
glClearColor(0, 0, 0, 1f);
return true;
}
public void render() {
glClear(GL_COLOR_BUFFER_BIT);
}
public void destroy() {
initialized = false;
}
}
// --------------------------------------------------------
// Demo box demo
// ========================================================
public class GearsDemoBox implements Demo {
private boolean initialized;
private float view_rotx = 20.0f;
private float view_roty = 30.0f;
private float view_rotz;
private int gear1;
private int gear2;
private int gear3;
private float angle;
public boolean isInitialized() {
return initialized;
}
public boolean initialize() {
// setup ogl
FloatBuffer pos = BufferUtils.createFloatBuffer(4).put(new float[] { 5.0f, 5.0f, 10.0f, 0.0f});
FloatBuffer red = BufferUtils.createFloatBuffer(4).put(new float[] { 0.8f, 0.1f, 0.0f, 1.0f});
FloatBuffer green = BufferUtils.createFloatBuffer(4).put(new float[] { 0.0f, 0.8f, 0.2f, 1.0f});
FloatBuffer blue = BufferUtils.createFloatBuffer(4).put(new float[] { 0.2f, 0.2f, 1.0f, 1.0f});
pos.flip();
red.flip();
green.flip();
blue.flip();
glClearColor(0, 0, 0, 1f);
glLight(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
/* make the gears */
gear1 = glGenLists(1);
glNewList(gear1, GL_COMPILE);
glMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
gear(1.0f, 4.0f, 1.0f, 20, 0.7f);
glEndList();
gear2 = glGenLists(1);
glNewList(gear2, GL_COMPILE);
glMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
gear(0.5f, 2.0f, 2.0f, 10, 0.7f);
glEndList();
gear3 = glGenLists(1);
glNewList(gear3, GL_COMPILE);
glMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
gear(1.3f, 2.0f, 0.5f, 10, 0.7f);
glEndList();
glEnable(GL_NORMALIZE);
glMatrixMode(GL_PROJECTION);
System.err.println("GL_VENDOR: " + glGetString(GL_VENDOR));
System.err.println("GL_RENDERER: " + glGetString(GL_RENDERER));
System.err.println("GL_VERSION: " + glGetString(GL_VERSION));
System.err.println();
System.err.println("glLoadTransposeMatrixfARB() supported: " + GLContext.getCapabilities().GL_ARB_transpose_matrix);
if (!GLContext.getCapabilities().GL_ARB_transpose_matrix) {
// --- not using extensions
glLoadIdentity();
} else {
// --- using extensions
final FloatBuffer identityTranspose = BufferUtils.createFloatBuffer(16).put(
new float[] { 1, 0, 0, 0, 0, 1, 0, 0,
0, 0, 1, 0, 0, 0, 0, 1});
identityTranspose.flip();
glLoadTransposeMatrixARB(identityTranspose);
}
float h = (float) 300 / (float) 300;
glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, -40.0f);
return initialized = true;
}
public void render() {
angle += 2.0f;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(view_rotx, 1.0f, 0.0f, 0.0f);
glRotatef(view_roty, 0.0f, 1.0f, 0.0f);
glRotatef(view_rotz, 0.0f, 0.0f, 1.0f);
glPushMatrix();
glTranslatef(-3.0f, -2.0f, 0.0f);
glRotatef(angle, 0.0f, 0.0f, 1.0f);
glCallList(gear1);
glPopMatrix();
glPushMatrix();
glTranslatef(3.1f, -2.0f, 0.0f);
glRotatef(-2.0f * angle - 9.0f, 0.0f, 0.0f, 1.0f);
glCallList(gear2);
glPopMatrix();
glPushMatrix();
glTranslatef(-3.1f, 4.2f, 0.0f);
glRotatef(-2.0f * angle - 25.0f, 0.0f, 0.0f, 1.0f);
glCallList(gear3);
glPopMatrix();
glPopMatrix();
}
/**
* Draw a gear wheel. You'll probably want to call this function when
* building a display list since we do a lot of trig here.
*
* @param inner_radius radius of hole at center
* @param outer_radius radius at center of teeth
* @param width width of gear
* @param teeth number of teeth
* @param tooth_depth depth of tooth
*/
private void gear(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;
glShadeModel(GL_FLAT);
glNormal3f(0.0f, 0.0f, 1.0f);
/* draw front face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
if (i < teeth) {
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle + 3.0f * da), r1 * (float) Math.sin(angle + 3.0f * da),
width * 0.5f);
}
}
glEnd();
/* draw front sides of teeth */
glBegin(GL_QUADS);
for (i = 0; i < teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), width * 0.5f);
glVertex3f(r2 * (float) Math.cos(angle + 2.0f * da), r2 * (float) Math.sin(angle + 2.0f * da), width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle + 3.0f * da), r1 * (float) Math.sin(angle + 3.0f * da), width * 0.5f);
}
glEnd();
/* draw back face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), -width * 0.5f);
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
}
glEnd();
/* draw back sides of teeth */
glBegin(GL_QUADS);
for (i = 0; i < teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
glVertex3f(r2 * (float) Math.cos(angle + 2 * da), r2 * (float) Math.sin(angle + 2 * da), -width * 0.5f);
glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), -width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), -width * 0.5f);
}
glEnd();
/* draw outward faces of teeth */
glBegin(GL_QUAD_STRIP);
for (i = 0; i < teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
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;
glNormal3f(v, -u, 0.0f);
glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), width * 0.5f);
glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), -width * 0.5f);
glNormal3f((float) Math.cos(angle), (float) Math.sin(angle), 0.0f);
glVertex3f(r2 * (float) Math.cos(angle + 2 * da), r2 * (float) Math.sin(angle + 2 * da), width * 0.5f);
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);
glNormal3f(v, -u, 0.0f);
glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), width * 0.5f);
glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
glNormal3f((float) Math.cos(angle), (float) Math.sin(angle), 0.0f);
}
glVertex3f(r1 * (float) Math.cos(0), r1 * (float) Math.sin(0), width * 0.5f);
glVertex3f(r1 * (float) Math.cos(0), r1 * (float) Math.sin(0), -width * 0.5f);
glEnd();
glShadeModel(GL_SMOOTH);
/* draw inside radius cylinder */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0f * (float) Math.PI / teeth;
glNormal3f(-(float) Math.cos(angle), -(float) Math.sin(angle), 0.0f);
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
}
glEnd();
}
public void destroy() {
glDeleteLists(gear1, 1);
glDeleteLists(gear2, 1);
glDeleteLists(gear3, 1);
initialized = false;
}
}
// --------------------------------------------------------
}