C++ plugin
This shader is very similar to the xyzdist VEX function. It allows you to find the closest point on the surface / spline and store it in the ClosestData structure for further query of interpolated across primitive attribute value with interpolator.
Allows you to read data from any Houdini known geometry. This could be PrimPoly, PolySoups, Curves as well as Packed primitives, AlembicRefs and UsdRefs from .bgeo, .bgeo.sc or any other format which Houdini can digest e.g. .abc or .usd.