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Ryan Schultz
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SetDimensionAnchor — hover-select-then-confirm: - Cursor highlights candidate IFC elements (orange Blender selection outline) before committing; Tab cycles through overlapping/coplanar candidates - _compute_candidates: ray-cast all IFC mesh objects; falls back to 2D bounding-box proximity (5 cm tolerance) for plan-view picks where the ray misses the mesh by sub-mm amounts - _write_anchor: after anchoring a face, immediately calls regenerate_dimension with placement_override (Blender matrix_world) and _update_blender_curve so the curve vertex moves to the resolved point DrawParametricDimension — ForcePerpendicularToFace live snap constraint: - Reads force_perpendicular_to_face toggle from annotation props on invoke - After anchor[0] is placed on a FACE, _update_perp_constraint extracts the face normal and stores it as the constraint axis - _apply_perp_constraint runs every modal tick after handle_snap_selection, projecting the current snap point onto pt[0] + t*normal - On finalize, _create_dimension_from_polyline writes ForcePerpendicularToFace to the BBIM_Dimension pset and calls regenerate_dimension to snap the stored curve to the constraint before the operator exits regenerate_dimension.py: - ForcePerpendicularToFace block: after resolving all anchors, projects vertices 1…n onto the line through pt[0] along anchor[0]'s face normal - _get_anchor_face_normal_world: reads normal_local from anchor fingerprint, calls _rotate_local_to_world with placement_override; falls back to stored world-space normal resolve_anchor.py: - _rotate_local_to_world: transforms an element-local direction vector to world space using the element's placement or placement_override matrix pset/operator.py: - EditPset._execute: after editing a BBIM_Dimension pset on an IfcAnnotation, auto-calls regenerate_dimension + _update_blender_curve so changes to anchors/ForcePerpendicularToFace are reflected immediately in the viewport prop.py / workspace.py: - Added force_perpendicular_to_face BoolProperty to BIMAnnotationProperties - UI toggle shown in annotation tool header for DIMENSION/RADIUS/DIAMETER/ ANGLE/PLAN_LEVEL/SECTION_LEVEL types Psets_BBIM_Annotation.ifc: - Added ForcePerpendicularToFace property template (#39) to BBIM_Dimension - Extended BBIM_Dimension applicability to ANGLE, PLAN_LEVEL, SECTION_LEVEL Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>