Skip to main content

Adding new Shape3D Objects

3 replies [Last post]
dinaharchery
Offline
Joined: 2007-08-13
Points: 0

Hello All,

Thanks so much for all the help from the people in this forum. I have learned so much about the Java3D API.

I have a quick question about adding new Shape3D Object to a currently existing Shape3D Object. First a quick discription of what I am trying to do.

I started off with a Class that extended the Shape3D Class and was made-up of several different GeometryArrays. I allowed the user to select a GeometryArray via the Mouse. Once selected, another Shape3D Object was created from the GeometryArray and placed exactly where the original GeometryArray was selected. I don't remove the original GeometryArray since it is still a part of the original Shape3D Object and must remain that way.

The problem is probably self-evident, but I get Appearance "stripping" (a Z-buffer tear ?) in the new Shape3D - looks like a rendering battle between the original GeometryArray (part of the original Shape3D) and the new Shape3D.

Just wondering if anyone had some fresh ideas or hints out there ? I thought about adjusting the vertex points of the new Shape3D such that it sets just above the original GeometryArray.

Thanks for any help.

Reply viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
Dmitri Darine

i'm not sure about the 'freshness' of these hints, but:

1) Play with transparency of the new shape
2) Don't mess with vertices, try
http://download.java.net/media/java3d/javadoc/1.5.1/javax/media/j3d/PolygonAttributes.html#setPolygonOffset(float)

DD

---------------------------------------------------------------------
To unsubscribe, e-mail: interest-unsubscribe@java3d.dev.java.net
For additional commands, e-mail: interest-help@java3d.dev.java.net

aces
Offline
Joined: 2003-07-17
Points: 0

On some OpenGL drivers, the polygon offset operation has some cost, specially on large meshes.
Test it against your target hardware, specially ATi and Intel.

dinaharchery
Offline
Joined: 2007-08-13
Points: 0

THANK YOU!!!! It was just what I needed, everything works great now :)

Thank you a million times over.