Classify the solid as a pit (bulk below the topology; keep its lower surface, CutTop) or a stockpile (bulk above; keep its upper surface, CutBottom),

Closed polygons from the selection as rings, plus the count of rejected non-polygon objects. Open lines and points cannot form a surface.

Compute the offset result geometry for the current side-pick settings, choosing between a uniform offset and a per-vertex angled projection to a targe

Read and decompress the page record at `offset`, or `None` if the bytes there do not form a plausible page.

Returns `(logical database image, auxiliary preview stream)`. Journaled databases legitimately have freed pages, so holes are accepted here; they read

Resolve a Vulcan object colour index to an [`ObjectColor`], falling back to `ByLayer` for blank or not-yet-mapped indices (see [`crate::rendering::col

Diagnose why breakline edge `edge_index` of `rings[ring_index]` failed to insert as a CDT constraint. Scans every other edge across all rings for a di

True if `pidb`'s visible contents differ from the file saved at `path`. Compares layers and objects by id (order-insensitive) after normalising the r

Discard the current in-progress stroke without committing anything.

Draw the "Save before quit?" confirmation dialog.

Add a camera-independent round join in pixel space at a world position.

Populates [`Self::active_values_cache`] for the active variable if it isn't already current: decodes the values and derives the render range once, so

Draw hatch lines at `angle_deg` clipped to the interior of a closed polygon. Works in the polygon's own plane, so the fill is correct regardless of ca

Finish an in-progress MakePoly stroke as a closed polygon.

Reset the camera to a top-down plan view that fits all visible content. Falls back to a default unit zoom centred on the origin when empty.

Force z = `node_z` over the first `clearance` metres, inserting a boundary vertex where the flat ends so the grade change has a station.

Centre the current view on `center` without changing its orientation. The camera distance tracks the orthographic half-height because the controller d

Build a `Document` from a loaded DXF drawing.

Whether `drain` still has queued work.

Fingerprint of the set of blocks the fragment shader will hide outright. Chunk geometry (skipped blocks, exposed-face culling) depends on this set, so

True while the view is being changed (orbit/pan/zoom or resize) or within a short cooldown afterwards. The cooldown guarantees the last reduced-qualit

Intersect adjacent offset edge lines; `None` when (near-)parallel.

Cheaply test whether `offset` looks like a page header (the same checks as [`Self::decode_page`] minus the FastLZ decompression). A pointer block read

True when the centerline changes heading at `vertex` by more than a negligible amount (0.5°), i.e. the vertex is a corner rather than a collinear grad

Intersect two infinite lines given as point + direction. Returns `None` when the directions are parallel (exact sign test) or so nearly parallel that

A mixed grid for the skip tests: unit cells, a fully-empty brick column (x in [8, 16)), and elsewhere a random mix of empty cells, grade payloads and

If the closest pair of endpoints between the two edges is suspiciously close (but not exactly coincident), report the gap — this is the signature of t

Wrap an angle in degrees into `[0, 360)`.

A numeric variable's fixed "no value" sentinel, parsed from its BMF `global`/`default` field. Shared by the renderer's grade colouring and the UI's co

Return which sign of `horiz_dist` places the offset on the cursor's side. Returns `1.0` or `-1.0`. For closed polygons uses a point-in-polygon test so

A fully-opaque two-stop ramp, so `ramp_alpha` never hides a block.

An orthonormal pair spanning the plane perpendicular to `normal`.