LwPolyline PLINEGEN=0 (DXF default): emit SegmentedLines with NaN
separators between vertex-to-vertex segments; wire_gpu resets
arc-length to 0 after each NaN so linetype pattern restarts per vertex.
PLINEGEN=1: existing Contour path unchanged (continuous pattern).
WireModel gains plinegen field propagated through tessellate pipeline.
Solid3D/Region/Body: call SabReader::read() when parse_sat() returns
None due to binary SAB format (DWG files / newer AutoCAD exports).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add `aabb: [f32; 4]` field to WireModel (world-space 2-D bounding box).
In tessellate_entity() set each wire's AABB from e.as_entity().bounding_box()
via new entity_aabb() helper; Insert sub-entities each get their own AABB.
Preview/interim wires and any entity returning a zero-extent default box get
UNBOUNDED_AABB so they are never pre-rejected.
Replace the chord-sphere heuristic in Snapper::wire_in_range() with a proper
AABB vs snap-circle overlap test. The new check is four scalar comparisons and
correctly handles closed curves (circles, arcs) which the chord-sphere approach
had to special-case.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replaced the simplified MOVE-based STRETCH with a real crossing-window
implementation. Workflow: pick two crossing-window corners, then base+target
points. Only vertices/endpoints inside the window are translated:
- Line: moves start/end independently
- LwPolyline/Polyline: moves individual vertices inside window
- Arc/Circle/Ellipse: moves whole entity if center is inside
- Insert/Text/MText: moves if insertion point is inside
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
