can I pass a under-estimate SDF to Manifold::LevelSet?

[wtholliday]

I've got an approximate SDF which has the same zero level set, but under-estimates distances away from the surface. Will Manifold::LevelSet still generate a good mesh (albeit a bit slower) or does it need an exact SDF?

Asking because I'd like to get rid of my own Marching Cubes implementation which produces some degenerate triangles in output.

[elalish]

Yes, in fact our current levelset doesn't assume a distance function at all - the sign is all that's needed. We've been talking about optimizing it for the case where the function is known to be a distance or an underestimate, but haven't done so yet.

[wtholliday]

Oh that's interesting... so does it sample SDF values on a uniform grid?

[pca006132]

@wtholliday yes