Request for variant of Create Planar Breps, c#

David,

I understand from an earlier post that you're in development lockdown for a coming release however I'd like to add a request.

It would be nice to have an additional alternative method for creating planar breps: a method that preserves all of the original vertex or line information used to create the brep. It would be nice to have the method to ensure that no information from the original geometry used to create the brep is lost.

Currently the available methods will shrink the information if given the chance (for example by merging edges). This is problematic if the information is important to the creation of new geometry down the track.

Replies to This Discussion

Permalink Reply by Andrew Heumann on July 14, 2015 at 8:15am

If you really needed to, you could embed additional information in the resulting Brep's user dictionary - this can actually store curves, for instance, so you could embed each planar brep with the curves used to create it.

Permalink Reply by Jon Mirtschin on July 14, 2015 at 4:32pm

I remember when I was first using Rhino I was manually using split edge a lot to break down edges at adjacent face vertex (to get coincident edges for the purpose of FEA).

If you can code in c# (as suggested in the title), I'd suggest you develop your own method that wraps the rhino common function, and splits the resulting brep edges at the end points of the input curves.

Cheers,

Jon

Permalink Reply by Tree on July 14, 2015 at 8:39pm

Jon // Andrew,

Thanks for your thoughts. I had built a work around similar to your suggestions before making the post.

I made the request because when I thought about the typical interactions one has with Brep geometry felt quite different to the planar brep methods that were available in so far as in most instances the geometry carries the marks of its creation forward - for instance - a joined brep carries forward new vertices - while this method does not.

Appreciate each of your replies.

Permalink Reply by Sam Gregson on April 7, 2016 at 5:31am