> Hi Florin, Thanx for your answer. Well, I didn't want to use two > shape 3ds because I'm lazy :P I've already specified the > coordinates and texturecoordinates for an entire room, and I'd > like the outside walls to be different from the inside ones. But > I guess it's easier to just copy and paste the code and make a > different shape 3d like you said.
If you want to use the same Shape3D multiple times in your scene you can, using SharedGroup and Link nodes. But in my experience, this is rarely what you want. Even if you want the exact same geometry and appearance, you usually want to be able to *pick* each one separately. Using SharedGroup and Link, each occurrence of the Spape3D has the same UserData object, and therefore the picking code can't tell them apart.
So I have always ended up making multiple Shape3Ds. But what's great about Java 3D is that these Shape3Ds can all point to the same Geometry object and the same Appeanance object, so the memory overhead of each is just the Shape3D object itself, plus the UserData object.
In your case, you want the different occurrences to have different textures. So use the same Geometry object for all of them and create a separate Appearance object for each. Create separate texture objects for each, but if some of the Appearance components are the same, you can share just that component. If they all have the same RenderingAttributes, for example, use that RenderingAttributes object in all of the Appearances, and you don't have to waste the memory for a separate RenderingAttributes object in each Shape3D.
-Paul
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