centroid revised

Hi everyone,

does anyone know a way how to find the centroid of a srf without calculations of areas or volume? (without calculation time for unnecessary information)

@David: could this be an extra item on the analysis panel?

Thanks,

Phillip

Replies to This Discussion

Permalink Reply by David Rutten on July 15, 2011 at 4:11am

Hi Phillip,

how could I calculate the centroid without calculating the area?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by phillip on July 15, 2011 at 6:29am

hmm. ok, maybe a silly question. i thought of converting the surface to a finite set of of points, to achieve an aproximation, since I am using the point only for testing a brep inclusion.

can you think of a more sufficent method?

files attached. thanks for your attention

Attachments:

brep inclusion.3dm, 2.1 MB
brepinclusion.gh, 13 KB

Permalink Reply by David Rutten on July 15, 2011 at 6:45am

Calculating areas and centroids is easy for triangles. I could make a low-quality representation of the surface as a mesh. But then the Rhino SDK also has functions for computing AreaCentroids for Meshes and closed planar curves.

I can make the AreaCentroid and VolumeCentroid components capable of dealing with Brep, Surface, Mesh and Curve data. We can then test to see if it's any faster.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by phillip on July 15, 2011 at 7:04am

sounds good. meanwhile i´ll try some walk around methods.

thanks

Permalink Reply by kleerkoat on July 18, 2011 at 6:24am