src/edu/mit/ezyang/gravity/j3d/EditableGroup.java

   1 /*
   2  * To change this template, choose Tools | Templates
   3  * and open the template in the editor.
   4  */
   5 package edu.mit.ezyang.gravity.j3d;
   6
   7 import edu.mit.ezyang.gravity.GravitySimulatorView;
   8 import edu.mit.ezyang.gravity.j3d.behaviors.PhysicsBehavior;
   9 import edu.mit.ezyang.gravity.j3d.utils.picking.behaviors.PickSelectBehavior;
  10 import edu.mit.ezyang.gravity.j3d.utils.picking.behaviors.SmartPickTranslateBehavior;
  11 import edu.mit.ezyang.gravity.j3d.utils.picking.behaviors.SmartPickZoomBehavior;
  12 import javax.media.j3d.BoundingSphere;
  13 import javax.media.j3d.Bounds;
  14 import javax.media.j3d.BranchGroup;
  15 import javax.media.j3d.Canvas3D;
  16 import javax.media.j3d.Node;
  17 import javax.media.j3d.Transform3D;
  18 import javax.media.j3d.TransformGroup;
  19 import javax.vecmath.Point3d;
  20 import javax.vecmath.Vector3f;
  21
  22 /**
  23  * Convenience group for adding elements that need to be editable.
  24  * @warning Actual object should be added using addTransformChild(), NOT
  25  *          addChild().
  26  * @author Edward Z. Yang <ezyang@mit.edu>
  27  */
  28 public class EditableGroup extends BranchGroup {
  29
  30     private TransformGroup transformGroup;
  31
  32     public EditableGroup(Canvas3D canvas, TransformGroup rotateGroup, Vector3f location, GravitySimulatorView callback) {
  33         setCapability(BranchGroup.ALLOW_DETACH);
  34
  35         Bounds bounds = new BoundingSphere(new Point3d(0f, 0f, 0f), 1000f);
  36
  37         SmartPickTranslateBehavior translate = new SmartPickTranslateBehavior(this, canvas, bounds);
  38         translate.setRotateTransformGroup(rotateGroup);
  39         addChild(translate);
  40
  41         // :TODO: this needs to be modified to be smart
  42         SmartPickZoomBehavior zoom = new SmartPickZoomBehavior(this, canvas, bounds);
  43         zoom.setRotateTransformGroup(rotateGroup);
  44         addChild(zoom);
  45
  46         PickSelectBehavior select = new PickSelectBehavior(this, canvas, bounds);
  47         select.setupCallback(callback);
  48         addChild(select);
  49
  50         transformGroup = new TransformGroup();
  51         transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
  52         transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
  53         transformGroup.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
  54         transformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND);
  55         transformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE);
  56         transformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_READ);
  57
  58         Transform3D transform = new Transform3D();
  59         transform.setTranslation(location);
  60         transformGroup.setTransform(transform);
  61
  62         PhysicsBehavior physics = new PhysicsBehavior(transformGroup, callback);
  63         physics.setSchedulingBounds(bounds);
  64         addChild(physics);
  65
  66         addChild(transformGroup);
  67     }
  68
  69     public TransformGroup getTransformGroup() {
  70         return transformGroup;
  71     }
  72
  73     public void addTransformChild(Node child) {
  74         transformGroup.addChild(child);
  75     }
  76
  77
  78 }