Mixing 2D and 3D

[Richard Bair]

Having to clone the nodes hardly seems like simultaneous viewing from different points of view?

On Jul 25, 2013, at 5:17 PM, Chien Yang <chien.yang at oracle.com> wrote:

> Hi August,
> 
>      We did talk through some use cases such as PIP and rear view mirror. You can do simultaneous viewing from different points of view into a single 3D scene via the use of SubScenes. The key point, as you have clearly stated, is the need to clone the scene graph nodes per SubScene.
> 
> - Chien
> 
> On 7/25/2013 10:37 AM, Richard Bair wrote:
>> Hi August,
>> 
>>> >"I think we already do multiple active cameras?"
>>> >
>>> >More precisely: simultaneous viewing from different points of view into a single 3D scene graph was meant, i.e. several cameras are attached to one scene graph.
>>> >A SubScene has exactly one camera attached which renders the associated scene graph into the corresponding SubScene's rectangle. Implementing simultaneous viewing requires a cloned 3D scene graph for the second, third, and so on SubScene/Camera. Material, Mesh, and Image objects can be re-used because they are shareable. Animations of Nodes' Transforms seem to be shareable as well. But Transitions (Rotate, Scale, Translate) have to be cloned because they operate on a Node's methods directly. So, simultaneous viewing seems practicable.
>> Jasper or Kevin will have to comment, but I know this scenario was talked about extensively in the design for the renderToImage and cameras, and I thought this was possible today.
>> 
>