Set the default lineweight scale to 11 px/mm: the value the user matched
against AutoCAD on the actual screen. The 20 px/mm derived from their
screenshot was too heavy in practice - the capture and the monitor do
not share a DPI - so the constant is now only a starting point.
Move the lineweight controls off the toolbar into an Options panel:
display toggle, scale slider plus number box, a readout of what the
drawing's own weights come out to, grid toggle, zoom speed, and a reset.
Settings persist in IndexedDB (hmw-viewer/options) rather than
localStorage, so values keep their type and the store has room to grow
per-drawing later; every call degrades quietly if storage is blocked.
Scale changes still apply to the live materials - each fat batch now
remembers its weight in mm - so dragging the slider retunes a 37MB
drawing instantly.
Verified headless: 0.35mm renders 3-4px at scale 11 and 8-9px at 25,
matching the readout, and the value survives a reload via IndexedDB.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The px-per-mm mapping was a hard-coded guess twice over, and the right
value depends on the monitor - AutoCAD has the same knob as the Adjust
Display Scale slider. Expose it: a slider plus a number box next to the
lineweight toggle, with a readout of what the drawing's own weights come
out to (0.35mm -> 7px, 0.50mm -> 10px at the 20 px/mm default). The
value persists in localStorage.
Retuning applies to the live materials instead of rebuilding the scene.
The hairline cut-off is a millimetre value, so changing the scale moves
every weight by the same factor without changing which bucket a segment
belongs to - each fat batch now remembers its weight in mm, and only
material.linewidth is rewritten. That keeps a drag on the slider instant
even on the 37 MB road drawing.
Measured headless on its 0.35mm gutter line: 2-3px at scale 8, 7px at
20, 14px at 40 - matching the readout in each case.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The deployed site serves a .wasm with acadrust compiled into it, and our
vendored copy carries one modified MPL file
(src/io/dwg/dwg_stream_readers/object_reader/entities.rs, the read_mesh
array-count bounds fix). That is Executable Form distribution of modified
Covered Software, so MPL-2.0 3.2 requires the Source Code Form to be
available and recipients to be told how to get it. Nothing shipped said
so: no license text, no notice, no obtainable source - the upstream
mirror repos are private.
Add THIRD-PARTY-NOTICES.md plus public/licenses/ (MPL-2.0 text, the
read_mesh patch against the pristine 0.4.1 crate, and a served copy of
the notice), and link them from the page so recipients can actually find
them. Original crate download plus the patch reproduces the exact source
compiled into the wasm.
MPL does not require upstreaming, and the lineweight work did not touch
any MPL file - dwg-wasm/src/lib.rs is our MIT wrapper. docs/license-mpl2-
acadrust.md records the analysis and the checklist for future changes.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Every line was drawn 1px regardless of its CAD lineweight. Two causes:
the dwg-wasm parseResult never carried the field (acadrust reads
EntityCommon::line_weight but it was dropped in serialization), and the
renderer merged all segments into one LineSegments whose
LineBasicMaterial.linewidth WebGL ignores.
Resolve ByLayer/ByBlock/Default per entity and bucket segments by
dash|lineweight. Weighted buckets get their own LineSegments2 +
LineMaterial with worldUnits:false, so width stays constant in pixels
while zooming - AutoCAD LWDISPLAY semantics - at 8 px/mm (0.25mm = 2px).
Anything at or below the 0.25mm default stays in the hairline batch so
drawings that never assigned a weight render exactly as before.
Fat batches are instanced, so layer masking compacts the instance buffer
and lowers instanceCount instead of rewriting an index; slotOf tracks
where each segment moved so the selection highlight still finds its
vertices. Per-entity color spans (meta.spans) let the highlight repaint
across the hairline batch and every bucket it touched. Buckets past
400k segments fall back to hairline to bound GPU/heap cost.
Display follows the drawing's LWDISPLAY and can be forced from the
toolbar; the property panel now shows the entity lineweight.
Verified headless at a fixed camera on the 65k-entity road drawing:
cyan road edge 2px -> 5px, layer hide/restore returns the exact baseline
pixel counts, and a 0.35mm LWPOLYLINE selects and highlights.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
