||Pre convex the control cage - internally it uses the same method as the divide sop with maximum edges set to 100.
Using this helps with non-planar polygons but in general
shouldn't be required. Note you can always use the divide sop set
to triangulate non planar polys for extreme casesbut triangles don't produce the smoothest deformations.
this on can reduce the storage required for the calculated weights but
at the expense of accuracy. If not used wisely it can actually increase
the storage required since it stores a weight and the assiociated point
number. This option is best used for large control meshes where
at less some of the captured points lie close to the control cage.
threshold below which weights will be culled from the stored
attributes. If set too high the capture will be inaccurate, if
set to low nothing will be culled and the number of stored attributes
will go up.