forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
4aa1e90dcf
Introduce one bridge between WCS (how geometry and the file are stored) and the active UCS (the coordinate system the user works in), so every UCS-aware system routes through it instead of re-deriving axis math. - UcsXform (app/helpers.rs): the converter — to_wcs/to_ucs (points), vec_to_wcs/vec_to_ucs (directions), axes(), is_identity(). Orthonormal axes, so the inverse is the transpose. The old ucs_to_wcs / ucs_rotate_vec free fns now delegate to it (one implementation). - DocumentTab::ucs_xform() builds it from the tab's active_ucs (None = WCS). - DocumentTab::adopt_active_ucs_from_header() loads the document's saved current UCS (header model-space UCS) into active_ucs on open, so the file's coordinate system is live immediately; called from both load paths. - Status-bar coordinate readout reports the cursor in the active UCS. - UCS icon tripod projects the active UCS axes, so it rotates to the UCS instead of always showing world X/Y/Z. First slice of routing the app's coordinate systems through the converter; input/picking, grid, ViewCube, and the remaining readouts follow. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>