Now that geometry reaches the GPU/CPU as absolute coordinates via the
double-single relative-to-eye path, world_offset is always [0,0,0]. Strip
the parameter that was threaded through the whole tessellation / block-
expansion / fallback / camera-decode chain and the ExpandCtx field that
carried it — ~340 references across 20 files, all subtracting zero.
- truck_tess: to_local / to_local_low / tessellate_* drop the offset arg;
to_local is now a pure double-single split.
- tessellate: offset_to_ds → points_to_ds (pure DS split); tessellate(),
tessellate_entity(), fallback_geometry(), solid_wire_fallback(),
entity_aabb(), expand_insert(), expand_block_meshes(), the dimension
helpers (vec3_local, dimension_snap_pts, …), text_support, leader,
multileader, image_model, xclip and camera_from_view all lose the param.
- block_cache: ExpandCtx loses its world_offset field.
- Remove the now-dead offset_snap_pts and the unused set_grid_snap.
Behaviour is unchanged (the offset was zero everywhere); the compiler
verifies every call site.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
3D solid / surface meshes were the last single-f32 path. truck's mesh
tessellation now returns a paired verts_low residual (TruckTessResult::Mesh,
polygon_to_result), MeshModel/MeshLodSet carry it, the model-space offset
and block-instance transforms reconstruct the f64 position and re-split it
after subtracting world_offset, MeshVertex gains position_low (location 3),
and mesh.wgsl reconstructs the eye-relative position. Native SAT / ACIS /
OBJ mesh paths default to a zero residual (no regression — they were never
sub-f32 precise).
With this every world-space pipeline (wire, hatch, image, face3d, mesh)
is full double-single relative-to-eye; large-coordinate jitter is gone.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
Vertices now carry the low residual alongside the high half all the way
to the GPU: tessellation splits the offset-relative f64 coordinate into
(high, low) f32 (TruckTessResult::Lines/Point, the Text path, Lines /
SegmentedLines, and the block-cache instance transform), WireModel and
the block batch carry a paired points_low buffer, WireInstance gains
pos_a_low/pos_b_low (locations 10/11), and wire.wgsl reconstructs
rel = (pos_high - eye_high) + (pos_low - eye_low).
This is the piece the camera-only RTE was missing: at UTM-scale
coordinates the single-f32 vertex was quantized to ~0.5 m, so it snapped
each time the eye crossed an f32 boundary on pan. With the low half the
position is exact and the cross-drawing-paste jitter is gone.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
First step toward a web build: the library now compiles for
wasm32-unknown-unknown with --no-default-features.
- Add a `solid3d` feature (default on) gating truck-meshalgo /
truck-shapeops / lzma-sys. These pull vtkio → xz2 → lzma-sys (C),
which cannot cross-compile to wasm. Without the feature the 3-D
solid path (tessellation, booleans, ACIS import) becomes no-ops;
2-D CAD is unaffected. Native builds keep the feature by default.
- Move native-only crates (ureq, open) to non-wasm target deps and
add cfg shims: update-check is a no-op on wasm, and a new `sys`
module provides open_url + handle_path (rfd FileHandle → PathBuf;
synthesizes a name-based path on the web).
Native build + all 75 tests unchanged. Browser runtime wiring
(entry point, trunk, real file I/O) is a follow-up.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Match the `*_model` naming of the sibling render models (wire_model,
hatch_model, mesh_model, image_model). Also realign the related Scene
API for consistency: model_solids → solid_models, add_model_solid →
add_solid_model, register_model_solid → register_solid_model.
No behavior change; build and tests are green.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
