Nice work, Jamie. The look of a geodesic sphere is more pleasant then the OpenSCAD primitive one. I will play with it some day. 2016-04-12 4:48 GMT-03:00 Jamie_K <vector76@gmail.com>: > Sorry for resurrecting an old post but I think it's relevant. I've > constructed a geodesic equivalent to sphere() as a module in OpenSCAD. The > algorithm is hardly original, recursively subdividing an icosahedron, but I > feel the implementation is relatively simple. This code also respects $fn, > $fa, and $fs with the intent of being a drop-in replacement for those cases > when you want the geodesic sphere instead of the default. > > Since subdivision always quadruples the number of facets and cuts edge > length in half, there is a fair bit of quantization when choosing the > subdivision level, but it's fairly straightforward: compute the log base 2 > of the requested side length or angle compared to the icosahedron starting > point, and round up to the next integer so the subdivision will be at least > as fine as implied by $fn, or by the coarser of $fa, or $fs. > > I've also put this on thinigverse here: > http://www.thingiverse.com/thing:1484333 > > I got started on this because Google didn't seem to find any easy-to-use > geodesics in OpenSCAD, and because it's fun! > > -Jamie > > <http://forum.openscad.org/file/n17062/geodesic_sphere.png> > > > > > > -- > View this message in context: > http://forum.openscad.org/New-Algorithm-for-Spheres-tp13306p17062.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >