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 the GL lighting model. Objects are drawn
* using a grey material characteristic. A single light source illuminates the
* objects.
*
* @author Kiet Le (Java conversion)
*/
public class scene
extends JFrame
implements GLEventListener, KeyListener
{
private GLU glu;
private GLUT glut;
private GLCapabilities caps;
private GLCanvas canvas;
public scene()
{
super("scene");
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 scene().run();
}
/*
* Initialize material property and light source.
*/
public void init(GLAutoDrawable drawable)
{
GL gl = drawable.getGL();
glu = new GLU();
glut = new GLUT();
float light_ambient[] =
{ 0.0f, 0.0f, 0.0f, 1.0f };
float light_diffuse[] =
{ 1.0f, 1.0f, 1.0f, 1.0f };
float light_specular[] =
{ 1.0f, 1.0f, 1.0f, 1.0f };
/* light_position is NOT default value */
float light_position[] =
{ 1.0f, 1.0f, 1.0f, 0.0f };
gl.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, light_ambient, 0);
gl.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, light_diffuse, 0);
gl.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, light_specular, 0);
gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, light_position, 0);
gl.glEnable(GL.GL_LIGHTING);
gl.glEnable(GL.GL_LIGHT0);
gl.glDepthFunc(GL.GL_LESS);
gl.glEnable(GL.GL_DEPTH_TEST);
}
public void display(GLAutoDrawable drawable)
{
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glPushMatrix();
gl.glRotatef(20.0f, 1.0f, 0.0f, 0.0f);
gl.glPushMatrix();
gl.glTranslatef(-0.75f, 0.5f, 0.0f);
gl.glRotatef(90.0f, 1.0f, 0.0f, 0.0f);
glut.glutSolidTorus(0.275, 0.85, 20, 20);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(-0.75f, -0.5f, 0.0f);
gl.glRotatef(270.0f, 1.0f, 0.0f, 0.0f);
glut.glutSolidCone(1.0, 2.0, 20, 20);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(0.75f, 0.0f, -1.0f);
glut.glutSolidSphere(1.0, 20, 20);
gl.glPopMatrix();
gl.glPopMatrix();
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(-2.5, 2.5, -2.5 * (float) h / (float) w,
2.5 * (float) h / (float) w, -10.0, 10.0);
else gl.glOrtho(-2.5 * (float) w / (float) h, 2.5 * (float) w / (float) h,
-2.5, 2.5, -10.0, 10.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
boolean deviceChanged)
{
}
public void keyTyped(KeyEvent key)
{
}
public void keyPressed(KeyEvent key)
{
switch (key.getKeyCode()) {
case KeyEvent.VK_ESCAPE:
System.exit(0);
break;
default:
break;
}
}
public void keyReleased(KeyEvent key)
{
}
}
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