4 ms·
I noticed in the Assembly3 section that it uses SolveSpace as its solver. FreeCAD uses OpenCASCADE as its main CAD kernel, and this supports mating and constrai
by ssl232 4y ago
I noticed in the Assembly3 section that it uses SolveSpace as its solver. FreeCAD uses OpenCASCADE as its main CAD kernel, and this supports mating and constraints between parts (at least, CadQuery supports it, and it's essentially just wrapping OpenCASCADE) so I'd be interested to know why they chose to bundle and use a different kernel there.
- jemzipx 4y agoAssembly3 support various backends including Solvespace, and another using Sympy and SciPy. Realthunder mentioned he was working on supporting FreeCAD interal solver so I guess it is still WIP.
- phkahler 4y ago>> I noticed in the Assembly3 section that it uses SolveSpace as its solver. FreeCAD uses OpenCASCADE as its main CAD kernel, and this supports mating and constraints between parts (at least, CadQuery supports it, and it's essentially just wrapping OpenCASCADE) so I'd be interested to know why they chose to bundle and use a different kernel there. AFAICT OpenCASCADE does not include a geometric constraint solver like the one in SolveSpace. There are companies licensing such things for use in OpenCascade derived products. I think OCCT is used in FreeCAD for reading/writing files, handling all 3D geometry and NURBS operations and rendering. Only the constraint solver from Solvespace is being used in FreeCAD (and only in one workbench), as there isn't an equivalent in OCCT. The Solvespace geometric kernel is not as mature or complete as OCCT, but it is about 100 times smaller.