view src/samer/maths/MatrixImage.java @ 0:bf79fb79ee13

Initial Mercurial check in.

/*
 *	MatrixImage.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.maths;
import  samer.core.*;
import  samer.tools.*;
import  java.awt.Color;

public class MatrixImage extends ImageViewer
{
	Matrix		M;
	Node		n;

	public MatrixImage( Matrix M)
	{
		// should make an intelligent choice of 
		// image source depending on shape of matrix
		super(new MatrixImageSource( M, true),M.observable());
		this.n=Shell.env().node();
		this.M=M;
	}

	public void scale()
	{
		double	max, min, x;
		int		n=M.getRowDimension();
		int		m=M.getColumnDimension();

		min=max=M.get(0,0);
		for (int	i=0; i<n; i++) {
			for (int	j=0; j<m; j++) {
				x=M.get(i,j);
				if (x>max) max=x;
				if (x<min) min=x;
			}
		}

		getVMap().setDomain(min,max);
		getVMap().changed(this);
	}

	public static Viewer getViewerFor(Matrix M)
	{ 
		Shell.push(new Node("image",M.getNode()));
		Viewer vwr = new MatrixImage(M);
		Shell.pop();

		return vwr;
	}
}