/* part of Stereographic Projection applet, copyright 1996 John M Sullivan */
import java.applet.Applet;
import java.awt.*;
import java.lang.*;

public class SterProj extends Applet
{
    SterPanel mainpanel;
    Panel buttonpanel = new Panel();
    Panel checkboxpanel = new Panel();
    Panel sliderpanel = new Panel();
    Choice polym, motion;
    Button reset;
    Checkbox[] drawit = {new Checkbox("Chords               "),
			 new Checkbox("Spherical Net        "),
			 new Checkbox("Solid Sphere         "),
			 new Checkbox("Planar Proj          ")};
    Scrollbar zslider,pslider;
    Image sphere;

    public void init()
    {
	sphere = getImage(getCodeBase(),"sph.gif");
	mainpanel = new SterPanel(sphere);

	setLayout(new BorderLayout());
	add("Center",mainpanel);
	    mainpanel.init(getParameter("poly"));

	add("East",sliderpanel);
	sliderpanel.setLayout(new BorderLayout());
	zslider = new Scrollbar(Scrollbar.VERTICAL,50,10,0,100);
	sliderpanel.add("East",zslider);
	pslider = new Scrollbar(Scrollbar.VERTICAL,0,10,0,100);
	sliderpanel.add("West",pslider);

	add("North",checkboxpanel);
	checkboxpanel.setLayout(new GridLayout(1,4));
	for (int i=0; i<4; i++)
	{
	    drawit[i].setState(true);
	    checkboxpanel.add(drawit[i]);
	}

	add("South",buttonpanel);
	buttonpanel.setLayout(new GridLayout(1,3));

	reset = new Button("Reset View");
	//reset = new Choice(); reset.addItem("Reset View");
	buttonpanel.add(reset);

	motion = new Choice();
	    motion.addItem("Orbit Camera"); motion.addItem("Rotate Sphere");
	motion.select("Rotate Sphere");
	buttonpanel.add(motion);

	polym = new Choice();
	    polym.addItem("Tetrahedron"); polym.addItem("Cube");
	    polym.addItem("Octahedron");  polym.addItem("Dodecahedron");
	    polym.addItem("Icosahedron");
	polym.select("Cube");
	buttonpanel.add(polym);
    }

    public boolean handleEvent(Event e)
    {
	if (e.target==zslider)
	    mainpanel.setzoom(zslider.getValue());
	else if (e.target==pslider)
	    mainpanel.setprsp(pslider.getValue());
	else
	    return super.handleEvent(e);
	return true;
    }

    public boolean action(Event e, Object o)
    {
	if (e.target.equals(polym))
	    mainpanel.setpoly((String)o);
	else if (e.target.equals(motion))
	    mainpanel.setrot(o.equals("Rotate Sphere"));
	else if (e.target.equals(reset))
	    mainpanel.reset();
	else if (e.target.equals(drawit[0]))
	    mainpanel.drawstr = drawit[0].getState();
	else if (e.target.equals(drawit[1]))
	    mainpanel.drawsph = drawit[1].getState();
	else if (e.target.equals(drawit[2]))
	    mainpanel.drawsol = drawit[2].getState();
	else if (e.target.equals(drawit[3]))
	    mainpanel.drawpln = drawit[3].getState();
	else
	    return false;
	mainpanel.repaint();
	return true;
    }
}