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refactor(camera): store orbit target in f64

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Foundation for relative-to-eye rendering: the pivot the camera orbits
must stay precise at large offset-relative coordinates so the derived eye
(which the RTE path subtracts per vertex) is exact. `Camera::target` is
now DVec3 and `eye_f64()` exposes the full-precision eye; `view_proj`
still casts to f32 at the matrix, so behaviour is unchanged for now.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
This commit is contained in:
Hakan SevenandClaude Opus 4.8 committed 2026-06-23 18:28:52 +03:00
1 parent 4100044c01
commit 091b8e1805
4 files changed
+44 -34
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src/app/view.rs
+2 -2
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@@ -93,8 +93,8 @@ impl OpenCADStudio {
let aspect = if vh > 0.0 { vw / vh } else { 1.0 };
let half_h = cam.ortho_size();
let half_w = half_h * aspect;
let tx = cam.target.x;
let ty = cam.target.y;
let tx = cam.target.x as f32;
let ty = cam.target.y as f32;
drop(cam);
grips_to_screen_paper(&tab.selected_grips, tx, ty, half_w, half_h, bounds)
} else {