For Wave 3D I just need to convert the STL to binary and assimp does this OK. Doesn't help with Sculptris however.. It would be really good to add OBJ format export (and Binary STL?) to OpenSCAD. Sounds like its nearly done anyway? -- View this message in context: http://forum.openscad.org/Irregular-mesh-generated-tp13765p13783.html Sent from the OpenSCAD mailing list archive at Nabble.com.

Hi all, To summarize a bit: o Our OBJ export issue: https://github.com/openscad/openscad/issues/351 o Binary STL would make sense. This issue needs to be addressed: https://github.com/openscad/openscad/issues/649 o Looks like Wings3D only supports binary STL. They should really improve the importer since most people tend to use ascii STL. o Having a meshing option which guarantees some sane triangle aspect ratio would be really good. The challenge is dealing with small/null triangles, so we might have to combine this with some sort of decimation algorithm to merge redundant small triangles. Btw., we have the same issue when creating twisted linear extrusions, but with a much worse effect on the geometry. -Marius

When 3D printing you want the least triangles that tessellate the vertices. Extra ones cause more line segments in the slice and some slicers pass those on to gcode. On 12 September 2015 at 16:06, Marius Kintel <marius@kintel.net> wrote: > Hi all, > > To summarize a bit: > o Our OBJ export issue: https://github.com/openscad/openscad/issues/351 > o Binary STL would make sense. This issue needs to be addressed: > https://github.com/openscad/openscad/issues/649 > o Looks like Wings3D only supports binary STL. They should really improve > the importer since most people tend to use ascii STL. > o Having a meshing option which guarantees some sane triangle aspect ratio > would be really good. The challenge is dealing with small/null triangles, > so we might have to combine this with some sort of decimation algorithm to > merge redundant small triangles. > > Btw., we have the same issue when creating twisted linear extrusions, but > with a much worse effect on the geometry. > > -Marius > > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

kitwallace wrote > In general though I think it would be useful to be able to generate meshes > with a topology and format compatible with other tools such as Sculptris > and Wings. Sure. It's always better to have features built-in. I'm still hoping that someday openscad can report coordinates of a shape ... ----- $ Runsun Pan, PhD $ -- libs: doctest , faces ( git ), offliner ( git ); tips: hash( 1 , 2 ), sweep , var $ -- Linux Mint 17.1 Rebecca x64 + OpenSCAD 2015.03.15/2015.04.01.nightly -- View this message in context: http://forum.openscad.org/Irregular-mesh-generated-tp13765p13788.html Sent from the OpenSCAD mailing list archive at Nabble.com.