[samwillis]

Manifold works on solid triangle meshes, OpenCascade is a true BREP kernel that represents solids as edges (straight and curved) and surfaces (not meshed) computed from those edges. There is no triangulation in the root model in OpenCascade.

[ur-whale]

So ... meaning Cadova has an underlying Mesh model, like OpenSCAD ... I wonder how they pull off proper filetting and curves.