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

Initial Mercurial check in.

/*
 *	MatrixAgent.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.core.Agent.*;

/**
	Provides a load of useful commands for dealing with
	a matrix.
  */

public class MatrixAgent extends Saver
{
	private Matrix M;

	public MatrixAgent(Matrix m) { super(m,m.getNode()); M=m; }

	public void getCommands(Registry r)
	{
		r.add("zeros").add("identity").add("multiply");
		r.group(); super.getCommands(r); r.group();
		r.add("image").add("editor");
		r.add("rowcolumn");
	}

	public String toString() { return "MatrixAgent("+M+")"; }

	public void execute(String cmd, Environment env) throws Exception
	{
		if (cmd.equals("identity"))	{ M.identity(); M.changed(); }
		else if (cmd.equals("zeros"))	{ M.zero();     M.changed(); }
		else if (cmd.equals("multiply")) {
			double K=X._double(env.datum("factor"),1);
			M.timesEquals(K);
			M.changed();
		} else if (cmd.equals("rowcolumn")) {
			new RowColumn(M);

		} else if (cmd.equals("plotter")) {

			pushNode("plotter");
			Viewer vwr = new MatrixPlotter(M);
			Shell.expose(vwr, "window");
			Shell.pop();

		} else if (cmd.equals("image")) {

			pushNode("image");

			Viewer vwr = new MatrixImage(M);
			Shell.expose(vwr, "window");
			Shell.pop();

		} else if(cmd.equals("editor")) {

			pushNode("editor");
			Shell.expose((Viewer)(new MatrixImageEditor(M)),"window");
			Shell.pop();
		} else super.execute(cmd,env);
	}

	private void pushNode(String nm) { Shell.push(new Node(nm,M.getNode())); }
}

class MatrixImageEditor extends MatrixImage
{
	MatEditor	editor;

	public MatrixImageEditor(Matrix A) {
		super(A);
		editor = new MatEditor(A,this,A.observable(),this);
	}

	public void detach()
	{
		editor.detach();
		super.detach();
	}
}