samer@1: /*
samer@1: 		Viewer.java
samer@1: 
samer@1: 		A View branch group containing a ViewPlatform
samer@1: 		and associated View, Canvas etc. Creates a
samer@1: 		window for itself. Can be added dynamically
samer@1: 		to a live universe.
samer@1:  */
samer@1: 
samer@1: import samer.core.*;
samer@1: import java.awt.event.*;
samer@1: import java.awt.*;
samer@1: import javax.media.j3d.*;
samer@1: import javax.vecmath.*;
samer@1: import com.sun.j3d.utils.behaviors.keyboard.*;
samer@1: 
samer@1: import samer.core.Node;
samer@1: 
samer@1: public class Viewer extends BranchGroup implements Agent
samer@1: {
samer@1: 	Node			node;
samer@1: 	Canvas3D		canvas;
samer@1: 	TransformGroup	VT=new TransformGroup();
samer@1: 	View			V=new View();
samer@1: 	Shell.Window	win;
samer@1: 
samer@1: 	public void lookFrom(Point3d eye, Vector3d up)
samer@1: 	{
samer@1: 		// view platform placement			
samer@1: 		Transform3D		t=new Transform3D();
samer@1: 		t.lookAt(eye, new Point3d(0,0,0), up);
samer@1: 		t.invert();
samer@1: 		VT.setTransform(t);
samer@1: 	}
samer@1: 
samer@1: 	public Viewer(String name)
samer@1: 	{
samer@1: 		node=new Node(name);
samer@1: 		Shell.push(node);
samer@1: 
samer@1: 		// create view bits
samer@1: 		canvas=new Canvas3D(util.getGraphicsConfiguration());
samer@1: 
samer@1: 		// view platform placement			
samer@1: 		ViewPlatform	VP=new ViewPlatform();
samer@1: 
samer@1: 		lookFrom(new Point3d(0,1,6), new Vector3d(0,1,0));
samer@1: 
samer@1: 		if (Shell.getBoolean("keynav",false)) {
samer@1: 			// !!! all key navigators seem to be slaved!			
samer@1: 			util.addKeyNavigator(VT,util.readwrite(VT));
samer@1: 		}
samer@1: 
samer@1: 		VT.addChild(VP);
samer@1: 		addChild(VT);
samer@1: 
samer@1: 		// view itself
samer@1: 		V.addCanvas3D(canvas);
samer@1: 		V.setPhysicalBody(new PhysicalBody());
samer@1: 		V.setPhysicalEnvironment(new PhysicalEnvironment());
samer@1: 		V.attachViewPlatform(VP);
samer@1: 		V.setWindowEyepointPolicy(View.RELATIVE_TO_WINDOW);
samer@1: 		V.setWindowResizePolicy(View.VIRTUAL_WORLD);
samer@1: 		//V.setLocalEyeLightingEnable(true);
samer@1: 		//v.setWindowMovementPolicy(View.VIRTUAL_WORLD);
samer@1: 
samer@1: 		setCapability(ALLOW_DETACH);
samer@1: 		setCapability(ALLOW_CHILDREN_WRITE);
samer@1: 		compile();
samer@1: 		Shell.pop();
samer@1: 
samer@1: 		win=Shell.getWindow(name);
samer@1: 		win.container().setLayout(new BorderLayout());
samer@1: 		win.container().add(canvas);
samer@1: 		win.expose();
samer@1: 		win.addWindowListener(new WindowAdapter() {
samer@1: 			public void windowClosing(WindowEvent e) { dispose(); }	
samer@1: 		});
samer@1: 
samer@1: 		Shell.registerAgent(this);
samer@1: 	}
samer@1: 
samer@1: 	public void dispose() 
samer@1: 	{
samer@1: 		Shell.deregisterAgent(this);
samer@1: 		win.dispose(); 
samer@1: 		detach();
samer@1: 	}						
samer@1: 
samer@1: 	protected void finalize() { Shell.trace("finalizing view "+this); }
samer@1: 
samer@1: 	public void getCommands(Agent.Registry r) { r.add("start").add("stop"); }
samer@1: 	public void execute(String cmd, Environment env) {
samer@1: 		if (cmd.equals("start")) { V.startView(); } // canvas.startRenderer(); }
samer@1: 		else if (cmd.equals("stop")) { V.stopView(); } // canvas.stopRenderer(); }
samer@1: 	}
samer@1: }