Curvature

[HametAl]

Sorry for my dumb question. I want to compute gaussian curvature and mean curvature at a given point. I tried to use trimesh.curvature.discrete_gaussian_curvature_measure(mesh, points, radius) and trimesh.curvature.discrete_mean_curvature_measure(mesh, points, radius). I read the article "Restricted Delaunay triangulations and normal cycle’- Cohen-Steiner and Morvan", but couldn't understand what exactly are the points and radius. Is radius equivalent to 0.08lfs or lfs itself? Also, what are the points? Are they surface points withing the the radius (0.08lfs or lfs) from the centre of the sphere? Can someone explain please?

[HametAl]

Should the points in trimesh.curvature.discrete_gaussian_curvature_measure(mesh, points, radius) be vertices of the mesh or can be any samples points on the mesh?