samer@0: /*
samer@0:  *	VectorPlotter.java
samer@0:  *
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY;
samer@0:  *	without even the implied warranty of MERCHANTABILITY or
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.maths;
samer@0: 
samer@0: import java.util.*;
samer@0: import java.awt.*;
samer@0: import java.awt.event.*;
samer@0: import samer.core.*;
samer@0: import samer.core.util.*;
samer@0: import samer.core.Agent.*;
samer@0: import samer.tools.*;
samer@0: import java.awt.image.IndexColorModel;
samer@0: 
samer@0: /**
samer@0: 	A Viewer that draws multiple traces: one for each element of a vector
samer@0:   */
samer@0: 
samer@0: public class VectorTrace extends Trace
samer@0: {
samer@0: 	private Vec			vec;
samer@0: 	private Renderer		R;
samer@0: 	private int[]			old;
samer@0: 	private Color[]		cols;
samer@0: 
samer@0: 	public VectorTrace(Vec v)
samer@0: 	{
samer@0: 		IndexColorModel cmod=(IndexColorModel)Shell.get("colormap",ImageSourceBase.GREY);
samer@0: 		R=(Renderer)Shell.get("renderer",Renderer.LINE);
samer@0: 
samer@0: 		int N=v.size(), M=cmod.getMapSize();
samer@0: 		cols=new Color[N];
samer@0: 		old=new int[N];
samer@0: 		vec=v;
samer@0: 
samer@0: 		for (int i=0; i<N; i++) cols[i]=new Color(cmod.getRGB(i%M));
samer@0: 	}
samer@0: 
samer@0: 	protected void realized() { super.realized(); attach(); }
samer@0: 
samer@0: 	public void run()
samer@0: 	{
samer@0: 		super.run();
samer@0: 		Vec.Iterator it=vec.iterator();
samer@0: 		int	i,j;
samer@0: 
samer@0: 		for (i=0; it.more(); i++) {
samer@0: 			j=height-map.toInt(it.next());
samer@0: 			graphics.setColor(cols[i]);
samer@0: 			R.draw(graphics,x1,x2,old[i],j,j0);
samer@0: 			old[i]=j;
samer@0: 		}
samer@0: 	}
samer@0: 	// .............. Agent bits ..............................
samer@0: 
samer@0: 	public void getCommands(Registry r)
samer@0: 	{
samer@0: 		super.getCommands(r);
samer@0: 		r.group(); r.add("line").add("fill").add("fill3d").add("steps");
samer@0: 	}
samer@0: 
samer@0: 	public void execute(String c, Environment env) throws Exception
samer@0: 	{
samer@0: 		if      (c.equals("line"))		{ R=Renderer.LINE; }
samer@0: 		else if (c.equals("fill"))		{ R=Renderer.FILL; }
samer@0: 		else if (c.equals("fill3d"))	{ R=Renderer.FILL3D; }
samer@0: 		else if (c.equals("steps"))	{ R=Renderer.STEPS; }
samer@0: 		else super.execute(c,env);
samer@0: 	}
samer@0: }