* Helper function for readability above.

Formats a Blender matrix object for export, and transposes it so gl-matrix can use it correctly.

Returns the timestamp for a give frame number.

Formats the name of the bone for m.grl

'refcode_for_model' behavior if the current rendering engine is blender internal.

'refcode_for_model' behavior if the current rendering engine is cycles.

Run through the face data and populate a set of Vertex class instances, as well as a dictionary for mapping between the two.

Determines if smooth shading is in use or not.

Triangulate the mesh. This should be called early on because it reallocates arrays.

Used for animations. Should probably go in its own file along with the code that calls this as a class.