samer@0: /*
samer@0:  *	MatrixAgent.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: 
samer@0: import  samer.core.*;
samer@0: import  samer.core.Agent.*;
samer@0: 
samer@0: /**
samer@0: 	Provides a load of useful commands for dealing with
samer@0: 	a matrix.
samer@0:   */
samer@0: 
samer@0: public class MatrixAgent extends Saver
samer@0: {
samer@0: 	private Matrix M;
samer@0: 
samer@0: 	public MatrixAgent(Matrix m) { super(m,m.getNode()); M=m; }
samer@0: 
samer@0: 	public void getCommands(Registry r)
samer@0: 	{
samer@0: 		r.add("zeros").add("identity").add("multiply");
samer@0: 		r.group(); super.getCommands(r); r.group();
samer@0: 		r.add("image").add("editor");
samer@0: 		r.add("rowcolumn");
samer@0: 	}
samer@0: 
samer@0: 	public String toString() { return "MatrixAgent("+M+")"; }
samer@0: 
samer@0: 	public void execute(String cmd, Environment env) throws Exception
samer@0: 	{
samer@0: 		if (cmd.equals("identity"))	{ M.identity(); M.changed(); }
samer@0: 		else if (cmd.equals("zeros"))	{ M.zero();     M.changed(); }
samer@0: 		else if (cmd.equals("multiply")) {
samer@0: 			double K=X._double(env.datum("factor"),1);
samer@0: 			M.timesEquals(K);
samer@0: 			M.changed();
samer@0: 		} else if (cmd.equals("rowcolumn")) {
samer@0: 			new RowColumn(M);
samer@0: 
samer@0: 		} else if (cmd.equals("plotter")) {
samer@0: 
samer@0: 			pushNode("plotter");
samer@0: 			Viewer vwr = new MatrixPlotter(M);
samer@0: 			Shell.expose(vwr, "window");
samer@0: 			Shell.pop();
samer@0: 
samer@0: 		} else if (cmd.equals("image")) {
samer@0: 
samer@0: 			pushNode("image");
samer@0: 
samer@0: 			Viewer vwr = new MatrixImage(M);
samer@0: 			Shell.expose(vwr, "window");
samer@0: 			Shell.pop();
samer@0: 
samer@0: 		} else if(cmd.equals("editor")) {
samer@0: 
samer@0: 			pushNode("editor");
samer@0: 			Shell.expose((Viewer)(new MatrixImageEditor(M)),"window");
samer@0: 			Shell.pop();
samer@0: 		} else super.execute(cmd,env);
samer@0: 	}
samer@0: 
samer@0: 	private void pushNode(String nm) { Shell.push(new Node(nm,M.getNode())); }
samer@0: }
samer@0: 
samer@0: class MatrixImageEditor extends MatrixImage
samer@0: {
samer@0: 	MatEditor	editor;
samer@0: 
samer@0: 	public MatrixImageEditor(Matrix A) {
samer@0: 		super(A);
samer@0: 		editor = new MatEditor(A,this,A.observable(),this);
samer@0: 	}
samer@0: 
samer@0: 	public void detach()
samer@0: 	{
samer@0: 		editor.detach();
samer@0: 		super.detach();
samer@0: 	}
samer@0: }