forked from 1b-agent/opencadstudio-upstream
Typed values were quantized to the f32 grid before reaching the entity (e.g. a length of 2000.8 committed as 2000.8020), worsening with magnitude. The interaction point layer was all glam::Vec3 (f32). Two-layer fix: 1. Coordinate backbone -> f64. last_point, last_cursor_world, dyn_anchor, dyn_ref become DVec3; UcsXform transforms, parse_coord, the ucs helper fns, dyn_resolve_point, the OTRACK typed-distance paths, command-line coordinate entry and the coordinate readout all compute in f64. Screen/GPU/alignment stays f32 (snap engine, render geometry, projection, UCS-icon/viewcube drawing) with casts only at those boundaries. 2. Per-command committed storage -> DVec3. on_point already received a DVec3, but many command impls narrowed it back to f32 (let pt = pt.as_vec3(); Vec<Vec3> fields) and re-widened at build, quantizing the committed coordinate. Migrated PLINE, SPLINE, MLINE, LENGTHEN, INSERT, 3D primitives, every dimension/leader/mleader, ray, revcloud, wipeout, attdef, table, tolerance, array center, mview, plot_window, plus the QDIM_PLACE handler and qdim_collect_points. Preview, hit-test and rubber-band paths keep f32 at the boundary. Hatch manual boundaries are left for a follow-up: HatchModel.boundary is structurally Arc<Vec<[f32;2]>> and needs a model-level widen. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>