Constraint Points

Hi guys,

Let's say I have to create random points in a brep and I want to put a constraint on some of the random points so that they are on the edges and on the faces of the brep. How do I do it?

Thanks

Replies to This Discussion

Permalink Reply by David Rutten on September 6, 2015 at 1:38pm

Complex approach:

Generate X random points on edges using [Populate].
Generate Y random points on faces using [Populate] and using the edge points as the pre-existing population (this prevents points on faces getting too close to edge points).
Generate Z random points in a box volume which contains the entire shape and using edge and face points as pre-existing population.
Remove all box points that are outside the shape.
Merge the three point lists into one.

This approach gives you a lot of control over the number of points on edges and faces, but makes it hard to control the total number of points.

Attachments:

constrainedpoints.gh, 9 KB

Permalink Reply by David Rutten on September 6, 2015 at 1:39pm

A different approach is to generate all points on the inside first, then that pulling them towards faces and edges. Also sounds like quite a difficult solution, and it's likely to create a 'gap' between the points on the faces and the points in the interior.

Permalink Reply by David Rutten on September 6, 2015 at 5:15pm