I recently added a UnitBallSampler to the sampling module to sample coordinates inside a unit ball. I also have a working TriangleSampler to sample within a triangle and intend to create a TetrahedronSampler to sample within a tetrahedron.
Currently in the released version (1.3) we only have a UnitSphereSampler in: o.a.c.rng.sampling The only other package is o.a.c.rng.sampling.distribution for probability distributions. Should new coordinate based samplers be moved to a package inside for example: o.a.c.rng.sampling.geometry o.a.c.rng.sampling.shape These shape samplers also require a valid input for the geometry. Currently in my working example for the TriangleSampler I have not validated the input is a triangle. I state that if the points are collinear then the distribution of the samples is undefined. It will not be uniform on the line segment connecting the vertices. I think that validation of the input shape is out of scope. Are shape samplers themselves also out of scope for RNG and would be a better fit in commons Geometry?
