/*
* @(#)AxisApp.java 1.1 00/09/22 15:57
*
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/*
* Getting Started with the Java 3D API
* written in Java 3D
*
* This program demonstrates:
* 1. writing a visual object class
* In this program, Axis class defines a visual object
* This particular class does not extend another class.
* See other the text for a discussion and a differnt approach.
* 2. Using LineArray to draw 3D lines.
* Three LineArray geometries are contained in an instance of Axis.
* There are better ways of doing this. This is a simple example.
*/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class AxisApp extends Applet {
/////////////////////////////////////////////////
//
// create graph branch group
//
public class Axis{
private BranchGroup axisBG;
////////////////////////////////////////////
//
// create axis subgraph
//
public Axis() {
axisBG = new BranchGroup();
// create line for X axis
LineArray axisXLines = new LineArray(2, LineArray.COORDINATES );
axisBG.addChild(new Shape3D(axisXLines));
axisXLines.setCoordinate(0, new Point3f(-1.0f, 0.0f, 0.0f));
axisXLines.setCoordinate(1, new Point3f( 1.0f, 0.0f, 0.0f));
Color3f red = new Color3f(1.0f, 0.0f, 0.0f);
Color3f green = new Color3f(0.0f, 1.0f, 0.0f);
Color3f blue = new Color3f(0.0f, 0.0f, 1.0f);
// create line for Y axis
LineArray axisYLines = new LineArray(2, LineArray.COORDINATES | LineArray.COLOR_3 );
axisBG.addChild(new Shape3D(axisYLines));
axisYLines.setCoordinate(0, new Point3f( 0.0f,-1.0f, 0.0f));
axisYLines.setCoordinate(1, new Point3f( 0.0f, 1.0f, 0.0f));
axisYLines.setColor(0, green);
axisYLines.setColor(1, blue);
// create line for Z axis
Point3f z1 = new Point3f( 0.0f, 0.0f,-1.0f);
Point3f z2 = new Point3f( 0.0f, 0.0f, 1.0f);
LineArray axisZLines = new LineArray(10,
LineArray.COORDINATES | LineArray.COLOR_3
);
axisBG.addChild(new Shape3D(axisZLines));
axisZLines.setCoordinate(0, z1);
axisZLines.setCoordinate(1, z2);
axisZLines.setCoordinate(2, z2);
axisZLines.setCoordinate(3, new Point3f( 0.1f, 0.1f, 0.9f));
axisZLines.setCoordinate(4, z2);
axisZLines.setCoordinate(5, new Point3f(-0.1f, 0.1f, 0.9f));
axisZLines.setCoordinate(6, z2);
axisZLines.setCoordinate(7, new Point3f( 0.1f,-0.1f, 0.9f));
axisZLines.setCoordinate(8, z2);
axisZLines.setCoordinate(9, new Point3f(-0.1f,-0.1f, 0.9f));
Color3f colors[] = new Color3f[9];
colors[0] = new Color3f(0.0f, 1.0f, 1.0f);
for(int v = 0; v < 9; v++){
colors[v] = red;
}
axisZLines.setColors(1, colors);
} // end of axis constructor
public BranchGroup getBG(){
return axisBG;
}
} // end of class Axis
/////////////////////////////////////////////////
//
// create scene graph branch group
//
public BranchGroup createSceneGraph() {
BranchGroup objRoot = new Axis().getBG();
// Let Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
} // end of CreateSceneGraph method of yoyo1
// Create a simple scene and attach it to the virtual universe
public AxisApp() {
setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(config);
add("Center", canvas3D);
BranchGroup scene = createSceneGraph();
// SimpleUniverse is a Convenience Utility class
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
} // end of coneyoyo constructor
// The following allows this to be run as an application
// as well as an applet
public static void main(String[] args) {
Frame frame = new MainFrame(new AxisApp(), 256, 256);
} // end of main method of axisapp
} // end of class axisap
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