Inflating a Brep inside a mesh

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Permalink Reply by Daniel Piker on January 13, 2016 at 4:01pm

Hi Travis, welcome!

Why does it need to be a Brep?

Kangaroo works by moving points around, and other geometry based on those points gets moved with them. This is very simple for meshes, whose geometry is defined by just their points and topology, whereas NURBS are more complex, with control point weightings, trim curves and so on. While it is possible to move the points of a NURBS surface with Kangaroo, these other properties are not updated, so if you have a polysurface unplanned things could happen at the joins between patches.

There are some situations in which it might make sense to use NURBS with Kangaroo, but in general if there isn't a clear need, it's much preferable to stick with meshes.

Permalink Reply by Travis Sanders on January 13, 2016 at 5:07pm

Thank you Daniel for your quick response! 

I need a NURBS approximation to a triangulated mesh for my research. I use tspipe to generate the correct topology for the geometry, but then I thought an inflating algorithm would be a good option to expand the t-spline inside the mesh until it filled it out. 

I get what you're saying about the joints between patches - I've experienced this in other approaches I've used. I was thinking I could incorporated other Kangaroo goals to prevent unwanted behavior. 

Thanks again, 

Travis