Creating Behaviors
Drag.java
/*
* @(#)Drag.java 1.14 98/04/13 13:07:16
*
* Copyright (c) 1996-1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* 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 AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.awt.BorderLayout;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.universe.*;
/**
* Class Drag
*
* Author Jim Argabright
* Date 11/24/97
*/
public class Drag extends Applet {
boolean appletFlag = true;
/**
* Sets the "applet" flag which is used to determine
* whether or not this program is running as an applet.
*/
public void setAppletFlag(boolean flag) {
appletFlag = flag;
}
/**
* Create the scenegraph for this program.
*/
public BranchGroup createSceneGraph() {
// Define colors
Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f red = new Color3f(0.80f, 0.20f, 0.2f);
Color3f ambientRed = new Color3f(0.2f, 0.05f, 0.0f);
Color3f ambient = new Color3f(0.2f, 0.2f, 0.2f);
Color3f diffuse = new Color3f(0.7f, 0.7f, 0.7f);
Color3f specular = new Color3f(0.7f, 0.7f, 0.7f);
Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
// Create the branch group
BranchGroup branchGroup = 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);
branchGroup.addChild(objScale);
// Create the bounding leaf node
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
BoundingLeaf boundingLeaf = new BoundingLeaf(bounds);
objScale.addChild(boundingLeaf);
// Set up the background
Background bg = new Background(bgColor);
bg.setApplicationBounds(bounds);
objScale.addChild(bg);
// Create the ambient light
AmbientLight ambLight = new AmbientLight(white);
ambLight.setInfluencingBounds(bounds);
objScale.addChild(ambLight);
// Create the directional light
Vector3f dir = new Vector3f(-1.0f, -1.0f, -1.0f);
DirectionalLight dirLight = new DirectionalLight(white, dir);
dirLight.setInfluencingBounds(bounds);
objScale.addChild(dirLight);
// Create the red appearance node
Material redMaterial =
new Material(ambientRed, black, red, specular, 75.0f);
redMaterial.setLightingEnable(true);
Appearance redAppearance = new Appearance();
redAppearance.setMaterial(redMaterial);
// Create the white appearance node
Material whiteMaterial =
new Material(ambient, black, diffuse, specular, 75.0f);
whiteMaterial.setLightingEnable(true);
Appearance whiteAppearance = new Appearance();
whiteAppearance.setMaterial(whiteMaterial);
// Create the transform node
TransformGroup transformGroup = new TransformGroup();
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
transformGroup.addChild(new Cube(redAppearance).getChild());
transformGroup.addChild(new Corners(whiteAppearance).getChild());
objScale.addChild(transformGroup);
// Create the drag behavior node
MouseRotate behavior = new MouseRotate();
behavior.setTransformGroup(transformGroup);
transformGroup.addChild(behavior);
behavior.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseZoom behavior2 = new MouseZoom();
behavior2.setTransformGroup(transformGroup);
transformGroup.addChild(behavior2);
behavior2.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseTranslate behavior3 = new MouseTranslate();
behavior3.setTransformGroup(transformGroup);
transformGroup.addChild(behavior3);
behavior3.setSchedulingBounds(bounds);
// Let Java 3D perform optimizations on this scene graph.
branchGroup.compile();
return branchGroup;
}
/**
* Calls the various methods necessary to initialize the
* program.
*/
public void init() {
// Set the layout manager
setLayout(new BorderLayout());
// Create the 3D canvas
Canvas3D canvas = new Canvas3D(null);
add("Center", canvas);
// Create the scene branch graph
BranchGroup scene = createSceneGraph();
// Create the Universe, the Locale, and the view branch graph
SimpleUniverse u = new SimpleUniverse(canvas);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
}
/**
* Inner class used to "kill" the window when running as
* an application.
*/
static class killAdapter extends WindowAdapter {
public void windowClosing(WindowEvent event) {
System.exit(0);
}
}
/**
* Used when running as an application.
*/
public static void main(String[] args) {
Drag drag = new Drag();
drag.setAppletFlag(false);
drag.init();
Frame frame = new Frame("Drag the mouse in the window");
frame.setSize(640, 480);
frame.add("Center", drag);
frame.addWindowListener(new killAdapter());
frame.setVisible(true);
}
}