Find non planar 3D polygons

[BillW]

I have found using "Convert to 3D polygons" that some polygons have vertices not in the same plane (particularly from Nurbs surfaces and SubD's). Couldn't find a Vectorscript function so wrote a script function - see attached text file. However I found a quicker way with:

 

planarset := centroid3D(polyH,x1,y1,z1);

 

If 3D polygon has any vertex not in the same plane as other vertices then centroid3D returns FALSE and x1=y1=z1=0

 

I now need to split the 3D polygon into seperate planar 3D polygons

 

PS Looks like I can't add code to page (403 error) or even upload a text file containing code.