- Change pattern eval_sdf to return double (signed distance) instead of pair
- Add reversed parameter to get_local_cap_mat for correct cap orientation
- Add has_end_caps flag to extrude, handle closed axis caps properly
- Add is_closed field to polyline_axis_descriptor
- Use desc.is_closed instead of computing from point/bulge counts
- Fix total_theta calculation in helixline (multiply by two_pi)
- Fix scale vector initialization (zero-fill w component)
rewrite confirm of signs when requiring planes, now we do not need any explicit input of signs;
fix the error when using even resolution as bg mesh resolution;
add simple primitive cone and box
Note: Cylinder's side surface defines its AABB, and z-axis scaling does not affect its radius.
Degeneracy checks only consider x/y directions (first two rows of the transform matrix), since z scaling does not change the essential geometry.
TODO: Consider redefining cylinder so the identity transform is always the first subface.
Zhicheng Wang
mckay