/*
 *  polys.java
 *  This program demonstrates polygon stippling.
 */

import jgl.GL;
import jgl.GLApplet;

public class polys extends GLApplet {

   public void display () {
	byte fly[] = {
		(byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
		(byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
		(byte)0x03, (byte)0x80, (byte)0x01, (byte)0xC0, 
		(byte)0x06, (byte)0xC0, (byte)0x03, (byte)0x60,
		(byte)0x04, (byte)0x60, (byte)0x06, (byte)0x20, 
		(byte)0x04, (byte)0x30, (byte)0x0C, (byte)0x20,
		(byte)0x04, (byte)0x18, (byte)0x18, (byte)0x20, 
		(byte)0x04, (byte)0x0C, (byte)0x30, (byte)0x20,
		(byte)0x04, (byte)0x06, (byte)0x60, (byte)0x20, 
		(byte)0x44, (byte)0x03, (byte)0xC0, (byte)0x22,
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22, 
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22,
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22, 
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22,
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22, 
		(byte)0x44, (byte)0x01, (byte)0x80, (byte)0x22,
		(byte)0x66, (byte)0x01, (byte)0x80, (byte)0x66, 
		(byte)0x33, (byte)0x01, (byte)0x80, (byte)0xCC,
		(byte)0x19, (byte)0x81, (byte)0x81, (byte)0x98, 
		(byte)0x0C, (byte)0xC1, (byte)0x83, (byte)0x30,
		(byte)0x07, (byte)0xe1, (byte)0x87, (byte)0xe0, 
		(byte)0x03, (byte)0x3f, (byte)0xfc, (byte)0xc0,
		(byte)0x03, (byte)0x31, (byte)0x8c, (byte)0xc0, 
		(byte)0x03, (byte)0x33, (byte)0xcc, (byte)0xc0,
		(byte)0x06, (byte)0x64, (byte)0x26, (byte)0x60, 
		(byte)0x0c, (byte)0xcc, (byte)0x33, (byte)0x30,
		(byte)0x18, (byte)0xcc, (byte)0x33, (byte)0x18, 
		(byte)0x10, (byte)0xc4, (byte)0x23, (byte)0x08,
		(byte)0x10, (byte)0x63, (byte)0xC6, (byte)0x08, 
		(byte)0x10, (byte)0x30, (byte)0x0c, (byte)0x08,
		(byte)0x10, (byte)0x18, (byte)0x18, (byte)0x08, 
		(byte)0x10, (byte)0x00, (byte)0x00, (byte)0x08 };

	byte halftone[] = {
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
		(byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA,
		(byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55 };

	myGL.glClear (GL.GL_COLOR_BUFFER_BIT);

	/* draw all polygons in white */
	myGL.glColor3f (1.0f, 1.0f, 1.0f);

	/* draw one solid, unstippled rectangle, */	
	/* then two stippled rectangles	         */
	myGL.glRectf (25.0f, 25.0f, 125.0f, 125.0f);
	myGL.glEnable (GL.GL_POLYGON_STIPPLE);
	myGL.glPolygonStipple (fly);
	myGL.glRectf (125.0f, 25.0f, 225.0f, 125.0f);
	myGL.glPolygonStipple (halftone);
	myGL.glRectf (225.0f, 25.0f, 325.0f, 125.0f);
	myGL.glDisable (GL.GL_POLYGON_STIPPLE);

	myGL.glFlush ();
    }

    private void myinit () {
	/* background to be cleared to black */
	myGL.glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
	myGL.glShadeModel (GL.GL_FLAT);
    }

    public void myReshape (int w, int h) {
        myGL.glViewport (0, 0, w, h);
        myGL.glMatrixMode (GL.GL_PROJECTION);
        myGL.glLoadIdentity ();
	myGL.glOrtho (0.0, (double)w, 0.0, (double)h, -1.0, 1.0);
        myGL.glMatrixMode (GL.GL_MODELVIEW);
        myGL.glLoadIdentity ();
    }

    /*
     *  Main Loop
     *  Open window with initial window size, title bar, 
     *  RGBA display mode, and handle input events.
     */
    public void init () {
	myUT.glutInitWindowSize (350, 150);
	myUT.glutInitWindowPosition (0, 0);
	myUT.glutCreateWindow (this);
	myinit ();
	myUT.glutDisplayFunc ("display");
	myUT.glutReshapeFunc ("myReshape");
	myUT.glutMainLoop ();
    }

}