## Add support for polygons

The strategy in the `QuadrilateralSampler`

could/should be improved, as currently, non-convex quadrilaterals can result from sampling. This can cause the `Line-PlanarGeometry`

algorithm to fail, as it expects convex planar geometries.

- We could substitute the algorithm in
`QuadrilateralSampler`

by a generic algorithm to sample convex polygons. Quadrilaterals could then be a special case of polygon. - We should either support non-convex planar geometries, or rename the function and/or variables such that it is clear that the algorithm is for convex shapes.