Section and Clip Examples

The sectioning examples compare a geometry-only section, a retained negative-half-space clip, and a clip whose section contains a hole.

python examples/sectioning/mesh_sections_and_clips.py
python examples/sectioning/brep_sections_and_clips.py

The Mesh example verifies polygon reconstruction, capped clipping, and hole preservation. The BRep example displays polygonal section output while retaining exact native OCC clipping results and therefore requires COMPAS OCC.

The plane frame's Z axis points toward the discarded front side. Clips keep negative signed distances (behind). Both scripts validate areas, holes, and retained volumes and accept --no-viewer.