For some reason I cant get the cut out sections of the CSG to be be taken into account with the mesh imposter?
I know nothing about physics engine, but if you use AmmoJSPlugin instead of OimoJSPlugin it does work:
MeshImpostor is not supported by Oimo?
Oimo’s mesh impostor falls back to a box impostor, as oimo doesn’t support mesh impostors. You are totally right
Both cannon and ammo will work correctly.
Crazy I had used Ammo initially and it was falling through the mesh.