Dear supervisor and I have found a regression in boolean operations betweeen 6.5.3 and 6.6.0.
If you do a "cut" operation with the attached model, the result is wrong (two solids instead of one):
restore bool.brep c
bopcut r c_1 c_2
This did not happen with 6.5.3.
What gives trouble is the radial seam inside the planar closed BSPline face in the bigger solid; maybe we could consider it as non-manifold topology (a vertex is connected with just one edge).
If you replace that BSPline face with a Geom_Plane, the boolean operation succeeds.
Is this a known limitation or just a bug?
Thanks a lot.