bherbruckandClaude Opus 5.5 a6dc759a02 Fix: rectangles over-constrained after an edit (dragged sides collapsed) ...

Parallel and perpendicular residuals were the cross/dot product over the sum of
the line lengths, so the solver could satisfy them by shrinking a line to
nothing. Dragging a corner of a rotated (3-point) rectangle collapsed a side to
zero; every later dimension then conflicted. The residuals are now the sine or
cosine of the angle (over the product of the lengths), which shrinking can't
improve. Tests drag, dimension, pin and square center, 2-point and 3-point
rectangles and check their degrees of freedom; oracle unchanged at 53/66.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

2026-10-08 03:03:27 +00:00

..

doc

Joints engine: joint origins that snap to faces, round ends or points (re-found on every solve, so joints follow edits), joints (rigid, revolute, slider, cylindrical, pin-slot, planar, ball) with values, limits, flip and offset, As-built Joint, Rigid Group, Drive Joints, Motion Link, a joint-graph solver from grounded occurrences (degrees of freedom per occurrence, loop conflicts reported), Interference between bodies

2026-10-08 02:59:56 +00:00

engine

Fix: rectangles over-constrained after an edit (dragged sides collapsed)

2026-10-08 03:03:27 +00:00

geom

Exact free-form profiles: geom Seg2 gains cubic Béziers and conics (rational quadratics: exact length, area, split, tangents); sketch ellipses, conics, text, fit splines and control splines up to degree 3 enter profiles as exact segments wherever a loop uses a whole segment, and the kernel builds them as B-spline / NURBS edges (an extruded ellipse is three faces with the exact volume)

2026-10-08 02:16:00 +00:00

io

STEP export: AP242 file of our own, names, colours, components as assemblies

2026-10-08 00:16:52 +00:00

kernel

Measure: split triangles that cut through curved faces onto the surface (trimmed faces after booleans were measured up to 15% off; 61's keyway volume now matches); oracle step check shows the original volume

2026-10-08 02:48:17 +00:00

mcp

3MF: export, and 3MF/STL import as mesh bodies

2026-10-07 21:30:38 +00:00

render

Selection feedback and origin: hover and selected highlights (theme tokens), origin planes/axes/point at a fixed screen size with browser eye toggles, click-to-pick sketch planes and faces with camera animation (Finish Sketch returns), multi-select dialog inputs with pre-selection, tangent chains and face-to-edges, window/crossing box selection, shell/draft/mirror/hole dialogs

2026-10-07 20:00:17 +00:00

sketch

Fix: rectangles over-constrained after an edit (dragged sides collapsed)

2026-10-08 03:03:27 +00:00

ui-egui

Sketch drawing: clicking a model vertex projects it into the sketch (linked point) and draws from it, as Fusion does ("vertex:x,y,z" point arguments)

2026-10-08 02:58:43 +00:00