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import gl4java.awt.*;
import java.applet.*;
import java.awt.*;
import java.awt.Dimension;
import java.awt.event.*;
import java.lang.*;
import java.util.*;
import gl4java.*;
public class coloredCross extends Applet
{
MyCanvas canvas = null;
public void init()
{
Dimension d = getSize();
setLayout(new BorderLayout());
canvas = new MyCanvas (d.width, d.height);
add("Center", canvas);
}
public static void main( String args[] )
{
Frame mainFrame = new Frame("coloredCross");
coloredCross applet = new coloredCross();
applet.setSize(400, 400);
applet.init();
applet.start();
mainFrame.add(applet);
mainFrame.pack();
mainFrame.setVisible(true);
}
public void start()
{
}
public void stop()
{
}
protected class MyCanvas extends GLCanvas
{
public MyCanvas(int w, int h) {
super(w,h);
GLContext.gljNativeDebug = false;
GLContext.gljClassDebug = false;
}
public void init() {
reshape(getSize().width, getSize().height);
}
public void display()
{
/* Standard GL4Java Init */
if( glj.gljMakeCurrent() == false )
{
System.out.println("problem in use() method");
return;
}
System.out.println("display()");
gl.glPushMatrix();
gl.glClear(GL_COLOR_BUFFER_BIT);
gl.glBegin(GLEnum.GL_LINES);
gl.glColor4f(0f, 0f, 1f, 1f);
gl.glVertex3i( 0, 0, 0);
gl.glVertex3i( 10, 10, 0);
gl.glColor4f(0f, 1f, 0f, 1f);
gl.glVertex3i( 0, 10, 0);
gl.glVertex3i( 10, 0, 0);
gl.glColor4f(1f, 0f, 0f, 1f);
gl.glVertex3i( 0, 5, 0);
gl.glVertex3i( 10, 5, 0);
gl.glColor4f(1f, 1f, 1f, 1f);
gl.glVertex3i( 5, 0, 0);
gl.glVertex3i( 5, 10, 0);
gl.glEnd();
gl.glPopMatrix();
/* For your animation dutys ;-) */
glj.gljSwap();
glj.gljCheckGL();
glj.gljFree();
System.out.println("display() done");
}
public void reshape( int width, int height )
{
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL_PROJECTION);
gl.glLoadIdentity();
gl.glOrtho(0, 10, 0, 10, -50.0,50.0);
gl.glMatrixMode(GL_MODELVIEW);
}
}
}
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