samer@0: /*
samer@0:  *	MatrixImage.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: import  samer.core.*;
samer@0: import  samer.tools.*;
samer@0: import  java.awt.Color;
samer@0: 
samer@0: public class MatrixImage extends ImageViewer
samer@0: {
samer@0: 	Matrix		M;
samer@0: 	Node		n;
samer@0: 
samer@0: 	public MatrixImage( Matrix M)
samer@0: 	{
samer@0: 		// should make an intelligent choice of 
samer@0: 		// image source depending on shape of matrix
samer@0: 		super(new MatrixImageSource( M, true),M.observable());
samer@0: 		this.n=Shell.env().node();
samer@0: 		this.M=M;
samer@0: 	}
samer@0: 
samer@0: 	public void scale()
samer@0: 	{
samer@0: 		double	max, min, x;
samer@0: 		int		n=M.getRowDimension();
samer@0: 		int		m=M.getColumnDimension();
samer@0: 
samer@0: 		min=max=M.get(0,0);
samer@0: 		for (int	i=0; i<n; i++) {
samer@0: 			for (int	j=0; j<m; j++) {
samer@0: 				x=M.get(i,j);
samer@0: 				if (x>max) max=x;
samer@0: 				if (x<min) min=x;
samer@0: 			}
samer@0: 		}
samer@0: 
samer@0: 		getVMap().setDomain(min,max);
samer@0: 		getVMap().changed(this);
samer@0: 	}
samer@0: 
samer@0: 	public static Viewer getViewerFor(Matrix M)
samer@0: 	{ 
samer@0: 		Shell.push(new Node("image",M.getNode()));
samer@0: 		Viewer vwr = new MatrixImage(M);
samer@0: 		Shell.pop();
samer@0: 
samer@0: 		return vwr;
samer@0: 	}
samer@0: }