GeneratePhysicRepresentationForMesh causing slow down

[josemendez]

Right okay

If I create an object in the Scene view, initialise the Obi Cloth, and then create it as a prefab, if I instantiate the prefab at runtime, will the physics work if I don't call GeneratePhysicRepresentationForMesh?

Of course, that's what prefabs are meant to be used for. What GeneratePhysicRepresentationForMesh() does is re-create the entire particle-and-constraint representation of a mesh from scratch. This is very expensive and generally not supposed to be done at runtime unless you're generating entirely procedural actors.

A prefab already contains all this information in serialized form. So you simply instantiate it, assign it to a solver, and you're done. Excerpt from the manual:

Most of the time actors can be created in the editor, turned into a prefab and instantiated at runtime. However there are situations where creating actors entirely trough code is needed (e.g. procedural level generation). [...goes on to explain how this is done...]

http://obi.virtualmethodstudio.com/tutor...ctors.html