Hi all,
I'm having troubles with the translation of a simple Box in Java3D.
I created a TransformGroup-subclass, called Room like this:
<START CODE>
public class Room
extends TransformGroup
{
//constants
...
private Box box = null;
public Room(float width, float length, Color3f color, String
caption)
{
super();
this.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE |
TransformGroup.ALLOW_BOUNDS_WRITE | TransformGroup.ALLOW_BOUNDS_READ);
this.setBoundsAutoCompute(true);
Appearance ap = new Appearance();
ap.setColoringAttributes(new ColoringAttributes(color,
ColoringAttributes.NICEST));
ap.setTransparencyAttributes(new TransparencyAttributes
(TransparencyAttributes.FASTEST, 0.5f));
box = new Box(width, BOX_HEIGHT, length,
Primitive.GENERATE_NORMALS | Primitive.GEOMETRY_NOT_SHARED, ap);
this.addChild(box);
}
}
<END CODE>
I then call this function in a mail class like this:
<START CODE>
//CONSTANTS
private final float KITCHEN_X_LENGTH = 0.5f;
private final float KITCHEN_Y_LENGTH = 0.25f;
...
SimpleUniverse universe = new SimpleUniverse();
universe.getViewingPlatform().setNominalViewingTransform();
BranchGroup group = new BranchGroup();
Room kitchen = new Room(KITCHEN_X_LENGTH, KITCHEN_Y_LENGTH,
KITCHEN_COLOR, "Kitchen");
kitchen.getTransform(transform);
transform.setTranslation(new Vector3d(-KITCHEN_X_LENGTH/2.0f,
0f, -KITCHEN_Y_LENGTH/2.0f));
kitchen.setTransform(transform);
<END CODE>
The meaning of this is that the box gets translated to the upper left
(when looking a it from the Y-axe down), so that its lower right corner
is in the origin. However, the box doesn't translate like it's supposed
to. I took a screenshot of the result, it's at:
http://www.beligum.org/example.png
You can see that the box gets translated a bit, but not far enough.
Any help
Bram
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