Model Clip
/*
* @(#)ModelClipTest2.java 1.10 02/10/21 13:45:04
*
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import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Material;
import javax.media.j3d.ModelClip;
import javax.media.j3d.PolygonAttributes;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.AxisAngle4f;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;
import javax.vecmath.Vector4d;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
* ModelClipTest2 draws a cylinder and creates two clip planes to see the
* interior of the cylinder. It also has a behavior to move the clip planes.
*/
public class ModelClipTest2 extends Applet {
private SimpleUniverse u;
public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create a Transformgroup to scale all objects so they
// appear in the scene.
TransformGroup objScale = new TransformGroup();
Transform3D t3d = new Transform3D();
t3d.setScale(0.4);
objScale.setTransform(t3d);
objRoot.addChild(objScale);
// Create lights
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
//Shine it with two colored lights.
Color3f lColor0 = new Color3f(1.0f, 1.0f, 1.0f);
Color3f lColor1 = new Color3f(0.5f, 0.0f, 0.5f);
Color3f lColor2 = new Color3f(0.7f, 0.7f, 0.0f);
Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, 1.0f);
Vector3f lDir2 = new Vector3f(0.0f, 0.0f, -1.0f);
AmbientLight lgt0 = new AmbientLight(true, lColor2);
DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
DirectionalLight lgt2 = new DirectionalLight(lColor2, lDir2);
lgt0.setInfluencingBounds(bounds);
lgt1.setInfluencingBounds(bounds);
lgt2.setInfluencingBounds(bounds);
objScale.addChild(lgt0);
objScale.addChild(lgt1);
objScale.addChild(lgt2);
// Create a Transformgroup for the geometry
TransformGroup objRot = new TransformGroup();
Transform3D t3d1 = new Transform3D();
AxisAngle4f rot1 = new AxisAngle4f(0.0f, 1.0f, 0.0f, 45.0f);
t3d1.setRotation(rot1);
objRot.setTransform(t3d1);
objScale.addChild(objRot);
//Create a cylinder
PolygonAttributes attr = new PolygonAttributes();
attr.setCullFace(PolygonAttributes.CULL_NONE);
Appearance ap = new Appearance();
Material mat = new Material();
mat.setLightingEnable(true);
ap.setMaterial(mat);
ap.setPolygonAttributes(attr);
Cylinder CylinderObj = new Cylinder(0.5f, 2.2f, ap);
objRot.addChild(CylinderObj);
//Create a box
Box BoxObj = new Box(0.8f, 0.8f, 0.8f, ap);
objRot.addChild(BoxObj);
// This Transformgroup is used by the mouse manipulators to
// move the model clip planes.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objRot.addChild(objTrans);
// Create the rotate behavior node
MouseRotate behavior = new MouseRotate(objTrans);
objTrans.addChild(behavior);
behavior.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseZoom behavior2 = new MouseZoom(objTrans);
objTrans.addChild(behavior2);
behavior2.setSchedulingBounds(bounds);
//Create Model Clip
ModelClip mc = new ModelClip();
boolean enables[] = { false, false, false, false, false, false };
Vector4d eqn = new Vector4d(0.0, 1.0, 1.0, 0.0);
mc.setEnables(enables);
mc.setPlane(1, eqn);
mc.setEnable(1, true);
mc.setInfluencingBounds(bounds);
objTrans.addChild(mc);
// Let Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
public ModelClipTest2() {
}
public void init() {
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
}
public void destroy() {
u.cleanup();
}
public static void main(String argv[]) {
BranchGroup group;
new MainFrame(new ModelClipTest2(), 500, 500);
}
}
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