[ODE] Trimesh

[LR]

Hy,
 
I introduce a trimesh in my simulation.
 
Question: Is it a problem for the colision detection system and solver if
the trimesh contains duplicated point(s) ? 
For exemple (it's only an example) if a make a plane with 2 triangles:
 
0--------1
|       /  |
|   /      |
2--------3
 
Declaration 1 (no duplicated points): 
    Points= 0 1 2 3
    Faces indices = (0 1 2)  + (1 3 2)
 
Declaration 2 (duplicated points):
    Points= 0 1 2 1 3 2 
    Faces indices = (0 1 2)  + (3 4 5)
 
Does the declaration 2 can cause problems to solver/colision detection ?
 
 
 
I hope someone can have the response :)
 
Thank you.
 
Laurent.
 
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