Files
OneCAD-Draft/tests
Felix RiestraandClaude Sonnet 5 faf3473b2b Fix ellipse solver drift: pin focus1 offset from center, not focus1 itself
An ocs_gcs Ellipse stores focus1 as an absolute point rather than an
offset from center, so a constraint that pulls only on center (e.g.
Concentric) left focus1's absolute coordinates untouched while center
moved — changing the derived focus1-center vector that major_axis and
minor_axis_ratio are computed from on write-back, so the ellipse visibly
rotated and reshaped even though nothing asked it to.

solve_scope now adds two Difference constraints per registered ellipse
pinning focus1.x-center.x and focus1.y-center.y to their pre-solve
values, so focus1 translates rigidly with center unless something
actually constrains it. Fixed's Ellipse arm no longer re-pins focus1
directly since that's now redundant with these rules.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
2026-09-10 23:15:19 +02:00
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