Module project 

The nearest point on a surface.

A foot point is where the displacement from the surface to a target is perpendicular to both tangents. It is found by Newton from a seed, and the seed is what decides which foot: a closed form, a branch and bound over a B-spline patch’s spans, a grid over any other surface, a stored copy of either for many targets, or a caller’s own guess.

Structs

SurfaceProjection

Where a point projects onto a surface.

SurfaceSeeds

A surface’s seeding structure, built once and asked many times.

Functions

project_on_surface

The nearest point on a surface to target.

project_on_surface_from

The nearest point on a surface to target, starting from a guess.