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fix(ucs): object snap tracking rays follow the active UCS

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OTRACK alignment rays (0°/90° and polar steps, plus the polar pencil from
the last point) were built along world X/Y. They now rotate with the
active UCS via a Mat4 passed into otrack_snap (scene.viewcube_ucs_mat() —
the UCS in model space, identity in paper), so tracking lines and the
intersection lock align to the user's coordinate system like ortho,
polar, and the grid. sync_ucs_to_scene now reuses UcsXform::rotation_mat.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-06-22 11:17:55 +03:00
commit 2509396ba0
4 changed files with 21 additions and 10 deletions
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8
src/app/document.rs
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@ -192,13 +192,7 @@ impl DocumentTab {
/// Push the active UCS rotation into the scene so the ViewCube composes with
/// it. Call after any change to `active_ucs`.
pub(super) fn sync_ucs_to_scene(&mut self) {
let (_, x, y, z) = self.ucs_xform().axes();
self.scene.viewcube_ucs = glam::Mat4::from_cols(
x.extend(0.0),
y.extend(0.0),
z.extend(0.0),
glam::Vec4::W,
);
self.scene.viewcube_ucs = self.ucs_xform().rotation_mat();
}
pub(super) fn new_drawing(n: usize) -> Self {