/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: J3DAxis.java
* Written by Gilda Garreton, Sun Microsystems.
*
* Copyright (c) 2005 Sun Microsystems and Static Free Software
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.plugins.j3d.utils;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.geometry.Cylinder;
import java.awt.*;
import javax.media.j3d.*;
import javax.vecmath.*;
/**
* Utility class to create 3D axes
* @author Gilda Garreton
* @version 0.1
*/
public class J3DAxis extends Group
{
/** Font for 3D axis labels */ private static Font3D font3D;
public static final Vector3d axisX = new Vector3d(1,0,0);
public static final Vector3d axisY = new Vector3d(0,1,0);
public static final Vector3d axisZ = new Vector3d(0,0,1);
/**
* Method to create axis composed of a cylinder + a cone
* @param factor
*/
private void createAxis(double factor, Vector3d dir, Appearance app, String text)
{
Transform3D t = new Transform3D();
float length = 0.1f;
float diameter = (float)length*.08f;
Primitive axis = new Cylinder(diameter, (float)length, app);
Transform3D cylinderTrans = new Transform3D();
Transform3D coneTrans = new Transform3D();
if (dir == axisX)
t.rotZ(-Math.PI/2);
else if (dir == axisZ)
t.rotX(Math.PI/2);
t.setScale(factor); // Axes are scaled according to sphere radius of the scene graph
TransformGroup axisTG = new TransformGroup(t); // Identity transform
Vector3d cylinderLocation = new Vector3d(0, length/2, 0);
cylinderTrans.setTranslation(cylinderLocation);
TransformGroup cylinderG = new TransformGroup(cylinderTrans);
cylinderG.addChild(axis);
axisTG.addChild(cylinderG);
Primitive arrow = new Cone(1.5f * diameter, (float)length/3, app);
Vector3d coneLocation = new Vector3d(0, length, 0);
coneTrans.setTranslation(coneLocation);
TransformGroup coneG = new TransformGroup(coneTrans);
coneG.addChild(arrow);
axisTG.addChild(coneG);
// Adding the text
Text3D axisText = new Text3D(font3D, text);
Shape3D axisLabel = new Shape3D(axisText, app);
Transform3D textScale = new Transform3D();
textScale.set(0.015);
textScale.setTranslation(new Vector3d(0, 0.11, 0.0));
TransformGroup axisLabelG = new TransformGroup(textScale);
axisLabelG.addChild(axisLabel);
axisTG.addChild(axisLabelG);
// Adding finally to the group
addChild(axisTG);
}
public J3DAxis(double factor, Appearance xApp, Appearance yApp, Appearance zApp,
String defaultFont)
{
if (font3D == null)
font3D = new Font3D(new Font(defaultFont, Font.PLAIN, 2),
new FontExtrusion());
createAxis(factor, axisX, xApp, "+X");
createAxis(factor, axisY, yApp, "+Y");
createAxis(factor, axisZ, zApp, "+Z");
}
}