felixfeliz / paperfoldmodels Goto Github PK

While working with some different flatteners i think paperfoldmodels has the best unwrapping algorithm. But there are some features which could be added from other flatteners to make it more powerful.

** Coplanar surfaces **

• https://github.com/osresearch/papercraft/blob/master/unfold.c does unwrapping of triangle meshes too but it will detect if there are coplanar surfaces

taking an example:

papercraft unfold detects the octagon in the center while paperfoldmodels subdivides into 6 triangles. so we get a lot of unrequired virtual folding lines

** Numbering **
another feature would be to give each surface a number. at the moment all edges have numbers only.

** Glue Tabs **

https://github.com/Avnerus/dxf2papercraftUV / dxf2papercraft.sourceforge.net add glue tabs to unfolded DXF models. This works really well.

dxf2papercruft has also the feature to do custom splittings with surface numbers. but this might make no sense with this unflattening algorithm. they all work different

Hey,
this algorithm set is really cool. Trying to make it work for me but while working with it i figured out some issue. I took a simple cube and that is not generated properly.

An unfolded cube looks like this:

https://www.thingiverse.com/thing:34553

happens on other meshes too. Maybe somebody has an idea whats the line of code causing this

Some more failure examples:
https://gitlab.com/inkscape/extensions/-/blob/master/Poly3DObjects/dodec.obj

https://gitlab.com/inkscape/extensions/-/blob/master/Poly3DObjects/cube.obj

https://gitlab.com/inkscape/extensions/-/blob/master/Poly3DObjects/great_dodec.obj

have a look at edge number 15. they have unequal size between the two pieces

Working files:
https://gitlab.com/inkscape/extensions/-/blob/master/Poly3DObjects/oct.obj