The orthographic near/far span was ±1000x the camera distance, so
zooming out ballooned the depth range and collapsed z-buffer precision:
coincident solids, meshes and wires then flipped draw order (meshes drew
in front of solids only when zoomed out, correct order when zoomed in).
Size the depth half-range from the drawing's extent instead — the bbox
diagonal on fit_to_bounds, the view height on a restored saved view —
and hold it constant as the camera zooms, so precision no longer depends
on distance. Falls back to the old distance-scaled range when unset.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
OCS wrote an app-specific "OpenCADStudio_Camera_Model" entry to the VIEW
table and preferred it when restoring the model view. That record polluted
the file for other CAD programs and its DXF round-trip was broken, so a
drawing saved in TOP reopened from DXF at an isometric-ish angle.
The model view now persists and restores entirely via the standard *Active
VPORT entry (view direction / target / twist), which round-trips natively in
both DWG and DXF. The custom View record is no longer written; existing ones
in older files are left untouched. Paper space already used the standard
sheet viewport and keeps a read-only fallback for very old files.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Replace the custom model_tiles tiling with iced 0.14 pane_grid as the layout
source of truth, while paper-space floating viewports are left untouched (they
overlap/free-place, which pane_grid cannot model).
Each Model pane is its own shader widget rendering its camera into the pane
bounds; the renderer Primitive carries a base_slot so several shader widgets
share the type-keyed MultiPipeline storage on disjoint slots. A second pane_grid
of transparent mouse_areas (plus on_resize) layers above the crosshair overlay
to receive input — the overlay's Hidden cursor interaction otherwise levitates
the cursor and starves any layer beneath it. The active pane follows the cursor
(hover-activate), and grid / crosshair / UCS icon render per pane while the
ViewCube and render-mode picker stay on the active pane only.
Split / close / VPORTS presets and the VPort table round-trip now drive
pane_grid (guillotine reconstruction on load). Adds drag-to-swap via a controls
bar handle with a ghost-card preview, visible pane dividers from the pane_grid
split regions, a default model background of RGB(33,40,48), and removes all the
superseded custom-tile code.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Two names collided with the pick subsystem and misdescribed their files:
- scene/hittest.rs -> scene/camera_ops.rs. Its contents are camera/view
operations (zoom, fit-all, named-view restore, camera<->document sync,
per-tile grid/snap), not hit-testing — the real screen-space hit-test
lives in scene/pick/hit_test.rs.
- scene/pick/selection.rs -> scene/pick/selection_state.rs. It holds only
the SelectionState struct; the name clashed with scene/selection.rs
(the Scene selection operations).
Callers are unaffected (the crate::scene::SelectionState re-export path is
unchanged). No behavior change.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
