> Actually, am still using planes to cut the parts that need to be removed in the
> connection. So a part of my original question is still valid. Is it OK regarding
> memory, using so many planes in a scene (a few hundreds for sure)
>
>
A plane don't use much memory:
- A directional vector (a group of 3 floats)
- A distance from the origin (a single float)
- possibly a texture
- possibly some transformation

You'd need many thousands, even millions, before your planes start to 
cause memory isue. So, several 100's is entirely OK memory whise.

I rendered scenes with over 100000 individualy textures spheres without 
problem. Note that a sphere uses about the same amount of memory as a plane.


Alain

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