it is octahedron shapes I want to render, which is not available in the suggested primitive mesh in the editor.
ArrayMesh
only offer me to make Custom Aabb
shape.
since it look really strait forward to make a convex polygon with CollisionShape
node I expected the same from mesh.
Make collision shape visible is processed (I think) at the beginning and happens before I configure my polygon (by code). so it doesn't work for me.
Since I only deal with basic polygons I wish I could not have to deal with other "mesh" software like blender.
if I use add_surface_from_arrays
I have to define manually which vertices define each face , right ? I cannot just throw all my points and let godot define the faces.