package glredbook10;
import java.awt.event.*;
import javax.swing.*;
import javax.media.opengl.*;
import javax.media.opengl.glu.*;
import com.sun.opengl.util.*;
/**
* This program demonstrates the use of OpenGL modeling transformations. Four
* triangles are drawn, each with a different transformation.
*
* @author Kiet Le (Java port)
*/
public class model
extends JFrame
implements GLEventListener, KeyListener
{
private GLU glu;
private GLUT glut;
private GLCapabilities caps;
private GLCanvas canvas;
private FPSAnimator animator;
public model()
{
super("model");
caps = new GLCapabilities();
canvas = new GLCanvas(caps);
canvas.addGLEventListener(this);
canvas.addKeyListener(this);
getContentPane().add(canvas);
}
public void run()
{
setSize(500, 500);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
canvas.requestFocusInWindow();
}
public static void main(String[] args)
{
new model().run();
}
public void init(GLAutoDrawable drawable)
{
GL gl = drawable.getGL();
//
gl.glClearColor(0f, 0f, 0f, 0f);
gl.glShadeModel(GL.GL_FLAT);
}
/*
* Clear the screen. For each triangle, set the current color and modify the
* modelview matrix.
*/
public void display(GLAutoDrawable drawable)
{
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glColor3f(1f, 1f, 1f);
gl.glLoadIdentity();
drawTriangle(gl);
gl.glEnable(GL.GL_LINE_STIPPLE);
gl.glLineStipple(1, (short) 0xf0f0);
gl.glLoadIdentity();
gl.glTranslatef(-20f, 0f, 0f);
drawTriangle(gl);
gl.glLineStipple(1, (short) 0xF00F);
gl.glLoadIdentity();
gl.glScalef(1.5f, 0.5f, 1.0f);
drawTriangle(gl);
gl.glLineStipple(1, (short) 0x8888);
gl.glLoadIdentity();
gl.glRotatef(90.0f, 0.0f, 0.0f, 1.0f);
drawTriangle(gl);
gl.glDisable(GL.GL_LINE_STIPPLE);
gl.glFlush();
}
public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h)
{
GL gl = drawable.getGL();
gl.glViewport(0, 0, w, h);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
if (w <= h) gl.glOrtho(-50.0, 50.0, -50.0 * (float) h / (float) w,
50.0 * (float) h / (float) w, -1.0, 1.0);
else gl.glOrtho(-50.0 * (float) w / (float) h,
50.0 * (float) w / (float) h, -50.0, 50.0, -1.0, 1.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
boolean deviceChanged)
{
}
private void drawTriangle(GL gl)
{
gl.glBegin(GL.GL_LINE_LOOP);
gl.glVertex2f(0.0f, 25.0f);
gl.glVertex2f(25.0f, -25.0f);
gl.glVertex2f(-25.0f, -25.0f);
gl.glEnd();
}
public void keyTyped(KeyEvent key)
{
// TODO Auto-generated method stub
}
public void keyPressed(KeyEvent key)
{
switch (key.getKeyCode()) {
case KeyEvent.VK_ESCAPE:
System.exit(0);
break;
default:
break;
}
}
public void keyReleased(KeyEvent key)
{
// TODO Auto-generated method stub
}
}
|
Other API Tips 
You can share your information about this topic using the form below!
Please do not post your questions with this form! Thanks.