grid of vertices on a surface

adamohern

Is there a way to create a grid of vertices on a surface?

adamohern

Note that by "surface" I mean a freeform organic surface (un-trimmed), and by "grid" I might mean either a regular grid by radial distance between points, or a surface UV parameter grid.

kevin_o_toole_1

evFaceTangentPlane takes a parameter in UV space and gives you a point and normal on the surface.

Note that right I don't think we make any guarantees about the parameterization being predictable, though for anything isometric to a plane it will be a standard grid.

ilya_baran

I would only add that while cones and extruded splines are isometric to planes, but their parametrization won't generally be isometric.

adamohern

Makes sense, guys. Thanks. And I don't suppose you have a means of measuring a unit distance either in UV or Euclidean space? For example, create a point on surface 1m due East of a reference point as measured (a) across the surface and (b) as the crow flies?

ilya_baran

For "as the crow flies", I can imagine constructing a circular arc and intersecting it with the surface (using e.g. evDistance).
For "as the geodesic crawls", that's not really possible at this time in general.  Approximations might include getting a curve on the surface (e.g. via an intersection or a split) and using arclength parameterization along it.