Reading the post, I don't think that's what they want. The tools can start with a 3D model, and when you select points you can operate on them.

Some of it looks like he is looking for constructive geometry libraries: add a box, subtract a cylinder, and retain knowledge that the removed points come from a box object and a cylinderobject.

Other parts look like he wants object registration and object identification: observe the pattern of points is basically a circle and identify it, observe the pattern of straight edges and identify it, observe the pattern of a negative cylinder and identify it, observe the pattern of a box some internal modifications and identify it.

I work directly with Parasolid and if it has feature recognition capabilities, I've never seen them. I know that other CAD packages such as Solidworks have tools to do that, but those tools may only exist within the CAD program and not within the geometry kernel itself.

This is actually a big area of research in the CAD world because there are standards such as IGES and STEP that just give B-spline geometry but no "feature" information. We call them "dumb bodies" because they don't tell you anything about how they were created. However, B-spline geometry can give you clues as to what certain shapes are. For example, a NURBS curve might be a circular edge based on how the control points relate to each other. But in this case, you have a curve you can test and not a string of vertices.

I'm sure that simple features such as holes, bosses, etc. can be extracted from the point data but it would be somewhat more involved. For example, the triangle vertices on a circular edge will have some roundoff error so you'll have to tolerance that, etc. I don't know offhand of any software tools that do this kind of thing that don't cost an arm and a leg.

Hey @mynameisnafe, what company do you work for? What do you guys use Parasolid for?