annotate src/samer/tools/SignalTrace.java @ 0:bf79fb79ee13

Initial Mercurial check in.

/*
 *	DoubleAgent.java
 *
 *	Copyright (c) 2000, Samer Abdallah, King's College London.
 *	All rights reserved.
 *
 *	This software is provided AS IS and WITHOUT ANY WARRANTY;
 *	without even the implied warranty of MERCHANTABILITY or
 *	FITNESS FOR A PARTICULAR PURPOSE.
 */

package	samer.tools;
import  samer.core.*;
import  samer.core.types.*;
import  java.util.*;
import  java.awt.*;

public class SignalTrace extends Trace
{
	VDouble		x;
	Color			col;
	Renderer		R;
	int				oldj;

	public SignalTrace(VDouble x) {
		this.x=x;
		col=Shell.getColor("color",getForeground());
		R=(Renderer)Shell.get("renderer",Renderer.LINE);
		oldj=-1;
	}

	public void run() {
		super.run();
		int j=height-map.toInt(x.value);
		if (oldj<0) oldj=j;
		graphics.setColor(col);
		R.draw(graphics,x1,x2,oldj,j,j0);
		oldj=j;
	}
	public void detach() { x.deleteObserver(this); }
	public void update(Observable obs, Object arg) {
		if (arg==Viewable.DISPOSING) { detach(); getParent().remove(this); }
		else if (x==obs) run();
		else super.update(obs,arg);
	}

	public void getCommands(Registry r) {	super.getCommands(r); r.add("renderer");	}
	public void execute(String cmd, Environment env) throws Exception {
		if (cmd.equals("renderer")) R=(Renderer)Shell.get("renderer",Renderer.LINE);
		else super.execute(cmd,env);
	}
}