Beispiel #1
0
  // This gets called by the constructor, hopefully only
  // once but it can be called at any time. Called prior to any
  // Window creation so it can only set variables, not draw things
  public void init() {
    /* initialize the widget */
    int width = gl.getWidth();
    int height = gl.getHeight();

    // Initialize the rendering viewport size to OpenGL
    gl.viewport(0, 0, width, height);
    gl.matrixMode(GL.PROJECTION); // Set up the camera mode
    gl.loadIdentity(); // Reset the transformation matrix
    if (width <= height)
      gl.ortho(
          -50.0,
          50.0,
          -50.0 * (double) height / (double) width,
          50.0 * (double) height / (double) width,
          -1.0,
          1.0);
    else
      gl.ortho(
          -50.0 * (double) width / (double) height,
          50.0 * (double) width / (double) height,
          -50.0,
          50.0,
          -1.0,
          1.0);
    gl.matrixMode(GL.MODELVIEW); // Reset to model transforms
  }
Beispiel #2
0
 // Simple redirector to our display function
 public void paint(Graphics g) {
   // First call the base class paint method to do a one time
   // Initialization - specific to the JoglCanvas class
   super.paint(g);
   // System.out.println("Call to paint");
   display();
 }
Beispiel #3
0
 // Thread thingy to run at start thread
 public void run() {
   try {
     while (true) {
       gl.use();
       spinDisplay();
       Thread.sleep(10);
     }
   } catch (InterruptedException e) {
     // the user sent an interupt,
     // So lets exit...
   }
 }
Beispiel #4
0
  // Sort of a legacy type function call, actually inside Java
  // This stuff should be in the paint call
  public synchronized void display() {

    // clear the screen and draw a yellow square
    gl.clear(GL.COLOR_BUFFER_BIT);
    // First rectangle
    gl.pushMatrix();
    gl.translate(-0.5, 0.0, 0.0);
    gl.rotate(spin, 0.0, 0.0, 1.0);
    gl.rect(-0.5, -0.5, 0.5, 0.5);
    gl.popMatrix();
    // Second rectangle
    gl.pushMatrix();
    gl.translate(0.5, 0.0, 0.0);
    gl.rotate(-spin, 0.0, 0.0, 1.0);
    gl.rect(-0.5, -0.5, 0.5, 0.5);
    gl.popMatrix();
    gl.flush(); // Make sure all commands have completed.
    gl.swap(); // Swap the render buffer with the screen buffer
  }
Beispiel #5
0
  // Handle the keystrokes
  public void keyTyped(KeyEvent e) {

    switch (e.getKeyChar()) {
      case 'h':
        gl.matrixMode(GL.MODELVIEW); /* manipulate modelview matrix  */
        gl.rotate(15.0, 0.0, 1.0, 0.0);
        break;
      case 'j':
        gl.matrixMode(GL.MODELVIEW); /* manipulate modelview matrix  */
        gl.rotate(15.0, 1.0, 0.0, 0.0);
        break;
      case 'k':
        gl.matrixMode(GL.MODELVIEW); /* manipulate modelview matrix  */
        gl.rotate(-15.0, 1.0, 0.0, 0.0);
        break;
      case 'l':
        gl.matrixMode(GL.MODELVIEW); /* manipulate modelview matrix  */
        gl.rotate(-15.0, 0.0, 1.0, 0.0);
        break;
      case '+':
        gl.matrixMode(GL.PROJECTION); /* manipulate Projection matrix  */
        gl.translate(0.0, 0.0, 0.5);
        e.consume();
        break;
      case '-':
        gl.matrixMode(GL.PROJECTION); /* manipulate Projection matrix  */
        gl.translate(0.0, 0.0, -0.5);
        e.consume();
        break;
      case 's':
        if (r_thread == null) {
          r_thread = new Thread(this);
          r_thread.start();
        }
        break;
      case 'p':
        if (r_thread != null) {
          r_thread.interrupt();
          r_thread = null;
        }
        break;
      case 27: /* Esc will quit */
        System.exit(1);
        break;
      default:
        break;
    }
    e.consume();
    display();
  }