threed.java

The view238 application is a simple tool for graphically displaying STEP-NC toolpaths. It is a Java

/* $RCSfile: coolant.cxx,v $
 * $Revision: 1.3 $ $Date: 2006/08/21 14:15:51 $
 * 
 * Copyright (c) 1991-2006 by STEP Tools Inc. 
 * All Rights Reserved.
 * 
 * This file may be distributed and/or modified under the terms of 
 * the GNU General Public License version 2 as published by the Free
 * Software Foundation and appearing in the file LICENSE.GPL included
 * with this file.
 * 
 * THIS FILE IS PROVIDED "AS IS" WITH NO WARRANTY OF ANY KIND,
 * INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 * 
 * 		----------------------------------------
 */

/*
 * @(#)ThreeD.java	1.14 04/07/26
 * 
 * Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 * 
 * -Redistribution in binary form must reproduce the above copyright notice, 
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL 
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST 
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, 
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY 
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, 
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */

/*
 * @(#)ThreeD.java	1.14 04/07/26
 */

/* This code was derived from the Java wireframe demo applet */

package com.steptools.view238;

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.URL;

import javax.swing.*;

// class FileFormatException extends IOException {
//     public FileFormatException(String s) {
// 	super(s);
//     }
// }


/** An component to put a 3D model into a page */
public class ThreeD extends JComponent
  implements MouseListener, MouseMotionListener {
    Model3D md;
    boolean painted = true;
    double xfac;
    int prevx, prevy;
    double xtheta, ytheta;
    double scalefudge = 1;
    Matrix3D amat = new Matrix3D(), tmat = new Matrix3D();
    String mdname = null;
    String message = null;

    public ThreeD() {
	scalefudge = 1.0;
	amat.yrot(20);
	amat.xrot(20);
// 	if (mdname == null)
// 	    mdname = "hughes_500.obj";
	setSize(getSize().width <= 20 ? 400 : getSize().width,
		getSize().height <= 20 ? 400 : getSize().height);
	addMouseListener(this);
	addMouseMotionListener(this);

//	InputStream is = new FileInputStream(mdname);
//	Model3D m = new Model3D (is);
//	md = m;
//	m.findBB();
//	m.compress();
// 	double xw = m.xmax - m.xmin;
// 	double yw = m.ymax - m.ymin;
// 	double zw = m.zmax - m.zmin;
// 	if (yw > xw)
// 	    xw = yw;
// 	if (zw > xw)
// 	    xw = zw;
// 	double f1 = getSize().width / xw;
// 	double f2 = getSize().height / xw;
// 	xfac = 0.7f * (f1 < f2 ? f1 : f2) * scalefudge;
//	is.close();

//	repaint();	
    }

    public void setModel (Model3D m) {
	md = m;
	m.findBB();
	m.compress();
	double xw = m.xmax - m.xmin;
	double yw = m.ymax - m.ymin;
	double zw = m.zmax - m.zmin;
	if (yw > xw)
	    xw = yw;
	if (zw > xw)
	    xw = zw;
	double f1 = getSize().width / xw;
	double f2 = getSize().height / xw;
	xfac = 0.7f * (f1 < f2 ? f1 : f2) * scalefudge;
//	is.close();
    }
		  
    public Dimension getPreferredSize() {
 	return new Dimension(400,400);
    }
		  
    public void mouseClicked(MouseEvent e) {
    }

    public  void mousePressed(MouseEvent e) {
        prevx = e.getX();
        prevy = e.getY();
        e.consume();
    }

    public  void mouseReleased(MouseEvent e) {
    }

    public  void mouseEntered(MouseEvent e) {
    }

    public  void mouseExited(MouseEvent e) {
    }

    public  void mouseDragged(MouseEvent e) {
        int x = e.getX();
        int y = e.getY();

        tmat.unit();
        double xtheta = (prevy - y) * 360.0f / getSize().width;
        double ytheta = (x - prevx) * 360.0f / getSize().height;
        tmat.xrot(xtheta);
        tmat.yrot(ytheta);
        amat.mult(tmat);

	forceRepaint();
        prevx = x;
        prevy = y;
        e.consume();
    }

    public void forceRepaint() {
        if (painted) {
            painted = false;
            repaint();
        }
    }
    
    public  void mouseMoved(MouseEvent e) {
    }

    public void paint(Graphics g) {
	if (md != null) {
	    md.mat.unit();
	    md.mat.translate(-(md.xmin + md.xmax) / 2,
			     -(md.ymin + md.ymax) / 2,
			     -(md.zmin + md.zmax) / 2);
	    md.mat.mult(amat);
	    md.mat.scale(xfac, -xfac, 16 * xfac / getSize().width);
	    md.mat.translate(getSize().width / 2, getSize().height / 2, 8);
	    md.transformed = false;
	    md.paint(g);
	    setPainted();
	} else if (message != null) {
	    g.drawString("Error in model:", 3, 20);
	    g.drawString(message, 10, 40);
	}
    }

    private synchronized void setPainted() {
 	painted = true;
 	notifyAll();
    }
    
//    private synchronized void waitPainted() {
//	while (!painted)
//	    wait();
//	painted = false;
//    }

//     public String getAppletInfo() {
//         return "Title: ThreeD \nAuthor: James Gosling? \nAn applet to put a 3D model into a page.";
//     }

//     public String[][] getParameterInfo() {
//         String[][] info = {
//             {"model", "path string", "The path to the model to be displayed."},
//             {"scale", "double", "The scale of the model.  Default is 1."}
//         };
//         return info;
//     }
}