samer@0: /*
samer@0: 		hello6.java
samer@0: 
samer@0: 		Construct universe without using SimpleUniverse 
samer@0: 		utility class - this puts together the view
samer@0: 		group explicitly.
samer@0: 
samer@0: 		Now has dynamically creatable views.
samer@0: 		Have to construct views on BranchGroups so they
samer@0: 		can be added while universe is live?	
samer@0:  */
samer@0: package samer.j3d;
samer@0: 
samer@0: import samer.core.*;
samer@0: import samer.maths.*;
samer@0: import samer.tools.*;
samer@0: import java.io.*;
samer@0: import java.awt.event.*;
samer@0: import javax.media.j3d.*;
samer@0: import javax.vecmath.*;
samer@0: 
samer@0: import java.util.Enumeration;
samer@0: 
samer@0: public class J3DViewerMorph extends Util implements Agent
samer@0: {
samer@0: 	Root			root=new Root();
samer@0: 	Switch		switcher;
samer@0: 	Morph			morph;
samer@0: 	Viewer		V;
samer@0: 	Matrix		P,P2;
samer@0: 	Appearance	app=points(new Appearance());
samer@0: 	Behavior		morpher;
samer@0: 					
samer@0: 	public J3DViewerMorph(VVector A) throws Exception
samer@0: 	{		
samer@0: 		Shell.print("creating PointsMatrix");
samer@0: 
samer@0: 		P=new Matrix("PointsMatrix",A.size(),3);
samer@0: 		new MatrixAgent(P).execute("load",Shell.env());
samer@0: 		P2=new Matrix("PointsMatrix2",A.size(),3);
samer@0: 		new MatrixAgent(P2).execute("load",Shell.env());
samer@0: 
samer@0: 		// create scene
samer@0: 		addBackground(root,new Background(new Color3f(0.26f,0.23f,0.35f)));
samer@0: 
samer@0: 		GeometryArray geoms[] = {
samer@0: 			new MatrixPointArray(P2,A),
samer@0: 			new MatrixPointArray(P,A)
samer@0: 		};
samer@0: 
samer@0: 		morph=new Morph(geoms,app);
samer@0: 		morph.setCapability(Morph.ALLOW_WEIGHTS_WRITE);
samer@0: 		morpher=new MorphBehavior();
samer@0: 		morpher.setSchedulingBounds(getBounds());
samer@0: 
samer@0: 		switcher=new Switch();
samer@0: 		switcher.addChild(new Shape3D(geoms[1], app));
samer@0: 		switcher.addChild(morph);
samer@0: 		switcher.setCapability(Switch.ALLOW_SWITCH_WRITE);
samer@0: 		switcher.setWhichChild(0);
samer@0: 
samer@0: 		// root.addChild(rotaterise(morph));
samer@0: 		root.addChild(morpher);
samer@0: 		root.addChild(rotaterise(switcher));
samer@0: 
samer@0: 		V=new Viewer("particles");
samer@0: 	
samer@0: 		root.addChild(V);
samer@0: 		root.addChild(new FPS(200));
samer@0: 		root.compile();
samer@0: 		root.golive();
samer@0: 
samer@0: 		Shell.registerAgent(this);
samer@0: 		Shell.exposeCommands(this);
samer@0: 
samer@0: 		V.V.startView();
samer@0: 	}
samer@0: 
samer@0: 	public void getCommands(Agent.Registry r) { r.add("switch").add("morph"); }
samer@0: 	public void execute(String cmd, Environment env) throws Exception
samer@0: 	{
samer@0: 		if (cmd.equals("switch")) { 
samer@0: 			switcher.setWhichChild(X._int(env.datum(),0));
samer@0: 		} else if (cmd.equals("morph")) {
samer@0: 		}
samer@0: 	}
samer@0: 	
samer@0: 	public Task getTask() { return V.V; }
samer@0: 	
samer@0: 	private static Group rotaterise(javax.media.j3d.Node n)
samer@0: 	{
samer@0: 		TransformGroup	tg = new TransformGroup();
samer@0: //		TransformGroup tg2=new TransformGroup();
samer@0: 
samer@0: 		mouseRotate(tg);
samer@0: 		mouseTranslate(tg);
samer@0: 		mouseZoom(tg);
samer@0: //		addRotator(tg,Shell.getInt("rotation.period",10000));
samer@0: 		tg.addChild(n);
samer@0: 		// tg.addChild(tg2);
samer@0: 		return tg;
samer@0: 	}
samer@0: 
samer@0: 	public class MorphBehavior extends Behavior 
samer@0: 	{
samer@0: 		private WakeupCriterion nextframe;
samer@0: 		private WakeupCriterion trigger;
samer@0: 		private	double t, weights[];
samer@0: 
samer@0: 		public MorphBehavior() {
samer@0: 			trigger = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
samer@0: 			nextframe = new WakeupOnElapsedFrames(1);
samer@0: 			weights = new double[2];
samer@0: 		}
samer@0: 
samer@0: 		public void initialize() { 
samer@0: 			Shell.print("behavior init");
samer@0: 			t=0; this.wakeupOn(trigger); 
samer@0: 		}
samer@0: 
samer@0: 		public void processStimulus(Enumeration criteria)
samer@0: 		{
samer@0: 			if (criteria.nextElement().equals(trigger)){
samer@0: 				Shell.print("morphing");
samer@0: 
samer@0: 				t=0;
samer@0: 				weights[0]=1;
samer@0: 				weights[1]=0;
samer@0: 				morph.setWeights(weights);
samer@0: 				wakeupOn(nextframe);
samer@0: 
samer@0: 			} else { 
samer@0: 				t += 0.01; 
samer@0: 				if (t < 1){
samer@0: 
samer@0: 					weights[0]=1-t;
samer@0: 					weights[1]=t;
samer@0: 					morph.setWeights(weights);
samer@0: 					wakeupOn(nextframe);
samer@0: 
samer@0: 				} else { 
samer@0: 					weights[0]=0;
samer@0: 					weights[1]=1;
samer@0: 					morph.setWeights(weights);
samer@0: 
samer@0: 					Shell.print("finished morphing");
samer@0: 					wakeupOn(trigger);
samer@0: 				}
samer@0: 			}
samer@0: 		}
samer@0: 	}
samer@0: }