samer@0: /*
samer@0:  *	Copyright (c) 2001, 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.tools;
samer@0: 
samer@0: import samer.core.*;
samer@0: import samer.core.types.*;
samer@0: import samer.core.util.*;
samer@0: //import samer.maths.*;
samer@0: import java.util.*;
samer@0: import java.awt.*;
samer@0: 
samer@0: /**
samer@0: 	Builds up a 2D joint histogram of 2 elements of a vector.
samer@0: */
samer@0: 
samer@0: public class ScatterPlot extends Plotter implements Observer {
samer@0: 	public VDouble alpha, fade,marksz;
samer@0: 	Pen		pen;
samer@0: 	Color		fader;
samer@0: 	
samer@0: 	public ScatterPlot()
samer@0: 	{
samer@0: 		exposeMaps();
samer@0: 		
samer@0: 		alpha=new VDouble("alpha",0.1);
samer@0: 		fade=new VDouble("fade",0.02);
samer@0: 		marksz=new VDouble("blob",2);
samer@0: 		marksz.addObserver(this);
samer@0: 		fade.addObserver(this);
samer@0: 		alpha.addObserver(this);
samer@0: 		fader=VColor.withAlpha(getBackground(),fade.value);
samer@0: 		setForeground(VColor.withAlpha(getForeground(),alpha.value));
samer@0: 	}
samer@0: 
samer@0: 	public void update(Graphics g) { Shell.print("update"); }
samer@0: 	public void paint(Graphics g) {
samer@0: 		Shell.print("paint");
samer@0: 		g.setColor(VColor.withAlpha(getForeground(),255));
samer@0: 		g.fillRect(0,0,width,height);
samer@0: 	}
samer@0: 	
samer@0: 	public void dispose() {
samer@0: 		alpha.dispose();
samer@0: 		fade.dispose();
samer@0: 		marksz.dispose();
samer@0: //		super.dispose();
samer@0: 	}
samer@0: 
samer@0: 	public void plot(double x, double y) {
samer@0: 		pen.abs(x,y).marker();
samer@0: 	}
samer@0: 
samer@0: 	public void fade() {
samer@0: 		graphics.setColor(fader);
samer@0: 		graphics.fillRect(0,0,width,height);
samer@0: 		graphics.setColor(getForeground());
samer@0: 	}
samer@0: 	
samer@0: 	protected void sized()
samer@0: 	{
samer@0: 		super.sized();
samer@0: 
samer@0: 		Graphics2D	g2=(Graphics2D)graphics;
samer@0: 		g2.setComposite(AlphaComposite.SrcOver);
samer@0: 		g2.setPaint(getForeground());
samer@0: 		pen=getPen(g2);
samer@0: 		pen.setMarkerSize((int)marksz.value);
samer@0: 	}
samer@0: 
samer@0: 	public void update(Observable o, Object a)
samer@0: 	{
samer@0: 		if (o==marksz) pen.setMarkerSize((int)marksz.value);
samer@0: 		else if (o==fade) fader=VColor.withAlpha(getBackground(),fade.value);
samer@0: 		else if (o==alpha) {
samer@0: 			setForeground(VColor.withAlpha(getForeground(),alpha.value));
samer@0: 		}
samer@0: 	}
samer@0: /*
samer@0: 	public Task vecTask(final Vec v, final int _i, final int _j) {
samer@0: 		return new AnonymousTask() {
samer@0: 			int		i=_i, j=_j;
samer@0: 			double  [] x=v.array();
samer@0: 			public void run() { plot(x[i],x[j]); }
samer@0: 		};
samer@0: 	}
samer@0:  */
samer@0: }
samer@0: 
samer@0: