How to create a mesh from a geodesic dome?

Replies to This Discussion

Permalink Reply by Jon Mirtschin on November 9, 2011 at 1:02pm

Hi Behnood,

 

There's a couple of options here.  The options for the geodesic dome you've shown creates triangle faces, so in the attached definition I opted to generate single lines at edges (instead of closed polycurves) and then I used my curve network to mesh component (this requires a group of curves that have coincident end and start points at junctions, rather than groups of polycurves).  You could create a planar brep (surface) using each polygon curve as a boundary, and then join and mesh the polysurface.  Just note that if the dome has a high frequency, small "gaps" start to appear between adjacent face edges so your rhino document tolerance might have to be relaxed.

 

Hope this helps, feel free to post other scenarios if the above doesn't make sense.

 

Attachments:

• 111109 geodesic dome to mesh.gh, 2 KB

Permalink Reply by Behnood Eghbali on November 9, 2011 at 1:31pm

Hi jon,

Thank you for the explanation, very helpful! I tried your definition, but unfortunately i still have this problem. I think somethings wrong with my plug-in. because other components work perfectly. Thanks anyway. ;)

Permalink Reply by Behnood Eghbali on November 9, 2011 at 1:45pm

inflating this mesh would be interesting ;)

Permalink Reply by Jon Mirtschin on November 9, 2011 at 8:20pm

Can you post a screenshot of what you see when you load my definition?  Or if you have changed the nature of the geodesic dome a copy of the model so I can advise for that configuration?

Permalink Reply by Behnood Eghbali on November 10, 2011 at 5:10am

Hi Jon,

Thx 4 reply..here's a screenshot of your definition. 

Permalink Reply by Jon Mirtschin on November 11, 2011 at 9:47pm

Is the StructDrawRhino plugin loaded in Rhino?  Can you test by trying to create a geodesic dome there from the rhino toolbar?   If not, I'll email you and we'll set up a diagnostic build to see why that is not working.

 

Cheers,

 

Jon

Permalink Reply by Behnood Eghbali on November 13, 2011 at 6:24am

Yes, it works. I created a geodesic dome in rhino without using grasshopper, but "curve network fillet" doesn't work at all.

Permalink Reply by Jon Mirtschin on November 13, 2011 at 11:18am

Are you running a recent version of the plugin?  This is the first thing to check.

 

http://www.geometrygym.com/downloads 

 

You can verify by running the rhino command sdrVersion  0.8.26 is the latest.  I will send a diagnostic version if this also does not fix.

Permalink Reply by Behnood Eghbali on November 14, 2011 at 10:52am

Thank you so much. I downloaded the latest version v0.8.28 and it works. that's awesome. thx again ;)