Sampling from a triangulation

[sauln]

Many people have triangulations of their favorite objects. It could be nice to have a method of taking a triangulation and sampling points on the surface with various levels of noise and density.

[ctralie]

I've actually written some pure numpy and for-loop free code to evenly sample points on a triangle mesh by area:

https://github.com/ctralie/pyhks/blob/a66c317866d984a7a1f37f5c8ab839dec7210739/HKS.py#L249

It's designed for 3D but I'm sure it could be extended to higher dimensions without too much trouble

[sauln]

That's awesome. I'll try to add this now.

[sauln]

Began a port here:

tadasets/tadasets/sample.py

Lines 9 to 13 in 69423d7

	def from_mesh(vertices, triangles, n=1000):
	"""
	Randomly sample points by area on a triangle mesh. This function is
	extremely fast by using broadcasting/numpy operations in lieu of loops