Picking - Interactive Web-Based Virtual Reality with Java 3D - page 198

Figure 10. Second code segment for PickSegmentBehavior.java

1. private WakeupCriterion []allEvents = new WakeupCriterion[1];

2. private WakeupOr allEventsCriterion;

3.

4. private BranchGroup branchGroup;

5. private Canvas3D canvas3D;

6.

7. private Shape3D geo3D = new Shape3D();

8. private Appearance appear;

9. private TransparencyAttributes transAttr;

10.
11. private PickCanvas pickCanvas;
12. private PickResult pickResult;
13. private PickTool pickTool;
14. private PickIntersection pickIntersect;
15.
16. private Point3d eyepos = new Point3d();
17. private Point3d mousepos = new Point3d();
18. private Point3d endpos = new Point3d();
19. private Vector3d dirn = new Vector3d();
20. private Transform3D trans = new Transform3D();
21.
22. private int x;
23. private int y;

Figure 11. Third code segment for PickSegmentBehavior.java

1. public SimplePickingSegmentBehavior(Canvas3D canvas3D, BranchGroup branchGroup)

2. {

3. this.branchGroup = branchGroup;

4. this.canvas3D = canvas3D;

5. geo3D.setCapability(Shape3D.ALLOW_APPEARANCE_READ);

6. geo3D.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);

7.

8. pickTool = new PickTool(branchGroup);

9. pickTool.setMode(PickTool.GEOMETRY_INTERSECT_INFO);

10. pickTool.setMode(PickTool.GEOMETRY);

11. }
12.
13. public void initialize()
14. {
15. allEvents[0] = new WakeupOnAWTEvent(MouseEvent.MOUSE_CLICKED);

16. allEventsCriterion = new WakeupOr(allEvents);

17. wakeupOn(allEventsCriterion);

18. }