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Project Evolution
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« on: January 17, 2010, 09:42:05 pm » |
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Last night I decided to download JOGL, so this app is more of an experimentation of how it works. Not too hard when you get help from a resource, but nonetheless very cool to work with. Next im planning on adding shapes through an ArrayList and individually giving them actions via a KeyHandler. Src package org.yourorghere;
import com.sun.opengl.util.Animator;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.*;
import javax.media.opengl.*;
import javax.media.opengl.glu.GLU;
public class JOGLApp extends JFrame implements KeyListener, GLEventListener {
// Causes our JOGL app to be animated- that is, it keeps calling display()
static Animator anim = null;
static final JOGLApp app = new JOGLApp();
boolean rotateOn = false;
float shapeSpeed, rotate = 0f;
public static void main(String[] args) {
// Creates the window in another thread
SwingUtilities.invokeLater (
new Runnable() {
public void run() {
// Removes the normal title bar. Most games do this.
app.setUndecorated(true);
app.setVisible(true);
// Fullscreen mode
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
app.setSize(screen.width, screen.height);
}
}
);
// Starts the Animator in a new thread.
SwingUtilities.invokeLater (
new Runnable() {
public void run() {
anim.start();
}
}
);
}
public JOGLApp() {
// Set the JFrame title
super("JOGL Application");
// Kill the process when the JFrame is closed
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GLCapabilities glCaps = new GLCapabilities();
GLCanvas glCanvas = new GLCanvas(glCaps);
glCanvas.addGLEventListener(this);
// Add the GLCanvas just like we would any Component
getContentPane().add(glCanvas, BorderLayout.CENTER);
addKeyListener(this);
anim = new Animator(glCanvas);
}
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
char keyChar = e.getKeyChar();
if (keyChar == KeyEvent.VK_ENTER)
destruct();
if (keyChar == KeyEvent.VK_SPACE)
if (rotateOn == false)
rotateOn = true;
else
rotateOn = false;
if (keyChar == KeyEvent.VK_BACK_SPACE)
shapeSpeed += .1;
}
public void keyReleased(KeyEvent e) {
}
// Only put stuff here that should happen once, at the beginning of the program
public void init(GLAutoDrawable gld) {
GL gl = gld.getGL();
GLU glu = new GLU();
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glViewport(0,0,500,300);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, 800.0f / 600.0f, 1.0f, 500.0f);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
GL createShape1(GL gl) {
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor3f(1.0f, 0.0f, 0.0f);
gl.glVertex3f( 0.0f, 1.5f,0.0f);
gl.glVertex3f(-1.0f,-1.0f,0.0f);
gl.glVertex3f( 1.0f,-1.0f,0.0f);
return gl;
}
GL createShape2(GL gl) {
gl.glBegin(GL.GL_TRIANGLES);
// Right Side Facing Front
gl.glColor3f(0.0f, 1.0f, 1.0f);
gl.glVertex3f(0.0f, 1.0f, 0.0f);
gl.glColor3f(0.0f, 0.0f, 1.0f);
gl.glVertex3f(1.0f, -1.0f, 1.0f);
gl.glColor3f(0.0f, 0.0f, 0.0f);
gl.glVertex3f(0.0f, -1.0f, -1.0f);
// Left Side Facing Front
gl.glColor3f(0.0f, 1.0f, 1.0f);
gl.glVertex3f(0.0f, 1.0f, 0.0f);
gl.glColor3f(0.0f, 0.0f, 1.0f);
gl.glVertex3f(0.0f, -1.0f, -1.0f);
gl.glColor3f(0.0f, 0.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, 1.0f);
// Bottom
gl.glColor3f(0.0f, 1.0f, 1.0f);
gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glColor3f(0.0f, 0.0f, 1.0f);
gl.glVertex3f(1.0f, -1.0f, 1.0f);
gl.glColor3f(0.0f, 0.0f, 0.0f);
gl.glVertex3f(0.0f, -1.0f, -1.0f);
return gl;
}
// This function will get called repeatedly by the Animator. Think of it as your game loop.
public void display(GLAutoDrawable gld) {
GL gl = gld.getGL();
gl.glLoadIdentity();
gl.glTranslatef(0.0f,0.0f,-5f);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
if (!rotateOn) {
gl.glRotatef(rotate, 1.0f, 0.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 0.0f, 1.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
rotate = rotate + 0;
} else if (rotateOn && shapeSpeed == 0) {
gl.glRotatef(rotate, 1.0f, 0.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 0.0f, 1.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
rotate = rotate + shapeSpeed + .1f;
} else if (rotateOn && shapeSpeed > 0) {
gl.glRotatef(rotate, 1.0f, 0.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
gl.glRotatef(rotate, 0.0f, 0.0f, 1.0f);
gl.glRotatef(rotate, 0.0f, 1.0f, 0.0f);
rotate = rotate + shapeSpeed;
}
createShape1(gl);
createShape2(gl);
gl.glEnd();
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
}
static void destruct() {
anim.stop();
app.dispose();
System.exit(0);
}
}How it works is you start it up, and it will go into fullscreen mode. Two shapes will appear. Use the spacebar to begin/stop rotating of the two shapes. The backspace will slightly increase the speed of the rotation everytime. Enter closes the app.  You MUST have JOGL to run this! Have fun. 
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