import javax.vecmath.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import com.sun.j3d.utils.behaviors.vp.*;
import javax.swing.JFrame;
import com.sun.j3d.loaders.*;
import com.sun.j3d.loaders.objectfile.*;
/**
* An example for constructing an object (tetrahedron) with triangles
* where normal vectors are interpolated.
*
* @author Frank Klawonn
* Last change 05.07.2005
* @see GeomArrayExample
*/
public class Isocahedran extends JFrame
{
//The canvas to be drawn upon.
public Canvas3D myCanvas3D;
public Isocahedran()
{
//Mechanism for closing the window and ending the program.
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Default settings for the viewer parameters.
myCanvas3D = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
//Construct the SimpleUniverse:
//First generate it using the Canvas.
SimpleUniverse simpUniv = new SimpleUniverse(myCanvas3D);
//Default position of the viewer.
simpUniv.getViewingPlatform().setNominalViewingTransform();
//The scene is generated in this method.
createSceneGraph(simpUniv);
//Add some light to the scene.
addLight(simpUniv);
//The following three lines enable navigation through the scene using the mouse.
OrbitBehavior ob = new OrbitBehavior(myCanvas3D);
ob.setSchedulingBounds(new BoundingSphere(new Point3d(0.0,0.0,0.0),Double.MAX_VALUE));
simpUniv.getViewingPlatform().setViewPlatformBehavior(ob);
//Show the canvas/window.
setTitle("An object loaded from a file");
setSize(700,700);
getContentPane().add("Center", myCanvas3D);
setVisible(true);
}
public static void main(String[] args)
{
Isocahedran nfga = new Isocahedran();
}
//In this method, the objects for the scene are generated and added to
//the SimpleUniverse.
public void createSceneGraph(SimpleUniverse su)
{
//Load an obj-file.
ObjectFile f = new ObjectFile(ObjectFile.RESIZE);
Scene s = null;
try
{
s = f.load("isocahedron.obj");
}
catch (Exception e)
{
System.out.println("File loading failed:" + e);
}
//Generate a transformation group for the loaded object.
Transform3D tfObject = new Transform3D();
tfObject.rotZ(0.4*Math.PI);
Transform3D xRotation = new Transform3D();
xRotation.rotY(0.4*Math.PI);
tfObject.mul(xRotation);
TransformGroup tgObject = new TransformGroup(tfObject);
tgObject.addChild(s.getSceneGroup());
Appearance yellowApp = new Appearance();
setToMyDefaultAppearance(yellowApp,new Color3f(0.5f,0.5f,0.0f));
BranchGroup theScene = new BranchGroup();
//Add the tetrahedron to the scene.
Background bg = new Background(new Color3f(1.0f,1.0f,1.0f));
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),Double.MAX_VALUE);
bg.setApplicationBounds(bounds);
theScene.addChild(bg);
theScene.compile();
//Add everything to the universe.
su.addBranchGraph(theScene);
}
/**
* Generates a default surface (Appearance) in a specified colour.
*
* @param app The Appearance for the surface.
* @param col The colour.
*/
public static void setToMyDefaultAppearance(Appearance app, Color3f col)
{
app.setMaterial(new Material(col,col,col,col,150.0f));
}
//Some light is added to the scene here.
public void addLight(SimpleUniverse su)
{
BranchGroup bgLight = new BranchGroup();
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
Color3f lightColour1 = new Color3f(1.0f,1.0f,1.0f);
Vector3f lightDir1 = new Vector3f(-1.0f,0.0f,-0.5f);
DirectionalLight light1 = new DirectionalLight(lightColour1, lightDir1);
light1.setInfluencingBounds(bounds);
Vector3f lightDir2 = new Vector3f(1.0f,0.0f,0.5f);
DirectionalLight light2 = new DirectionalLight(lightColour1, lightDir2);
light2.setInfluencingBounds(bounds);
bgLight.addChild(light1);
bgLight.addChild(light2);
su.addBranchGraph(bgLight);
}
}