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/**
* @(#) renormal.java
* @(#) author: Brian Paul (converted to Java by Ron Cemer)
*/
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.util.*;
import java.io.*;
import java.util.*;
import gl4java.GLContext;
import gl4java.awt.GLAnimCanvas;
import gl4java.applet.SimpleGLAnimApplet1;
public class renormal extends SimpleGLAnimApplet1
{
/* Initialize the applet */
public void init()
{
super.init();
Dimension d = getSize();
canvas = new renormalCanvas(d.width, d.height);
add("Center", canvas);
}
/* Local GLAnimCanvas extension class */
private class renormalCanvas extends GLAnimCanvas
{
private static final float M_PI = 3.14159265359f;
private float Phi = 0.0f;
public renormalCanvas(int w, int h)
{
super(w, h);
GLContext.gljNativeDebug = false;
GLContext.gljClassDebug = false;
setAnimateFps(30.0);
}
public void preInit()
{
doubleBuffer = true;
stereoView = false;
}
public void init()
{
System.out.println("init(): " + this);
reshape(getSize().width, getSize().height);
float mat[] = { 0.8f, 0.8f, 0.0f, 1.0f };
float pos[] = { -1.0f, 1.0f, 1.0f, 0.0f };
/* setup lighting, etc */
gl.glEnable(GL_LIGHTING);
gl.glEnable(GL_LIGHT0);
gl.glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, mat);
gl.glLightfv(GL_LIGHT0, GL_POSITION, pos);
gl.glEnable(GL_CULL_FACE);
gl.glEnable(GL_NORMALIZE);
glj.gljCheckGL();
}
public void reshape(int width, int height)
{
gl.glViewport(0,0,width,height);
gl.glMatrixMode(GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustum(-1.0f, 1.0f, -1.0f, 1.0f, 5.0f, 25.0f);
gl.glMatrixMode(GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -15.0f);
}
public void display()
{
if (glj.gljMakeCurrent() == false) return;
Phi += 0.05f;
while (Phi >= (M_PI*2.0f)) Phi -= (M_PI*2.0f);
float scale = 0.6f + (0.5f * (float)Math.sin(Phi));
gl.glClear(GL_COLOR_BUFFER_BIT);
gl.glPushMatrix();
gl.glScalef(scale, scale, scale);
long qobj = glu.gluNewQuadric();
glu.gluQuadricOrientation(qobj,GLU_OUTSIDE);
glu.gluQuadricNormals(qobj,GLU_SMOOTH);
glu.gluQuadricTexture(qobj,false);
glu.gluSphere(qobj,2.0f,40,40);
glu.gluDeleteQuadric(qobj);
gl.glPopMatrix();
glj.gljSwap();
glj.gljCheckGL();
glj.gljFree();
//if (!isSuspended()) repaint(); // Animate at full speed.
}
}
}
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