minsungandClaude Opus 5 c67a803e4d feat(viewer2d): render DWG lineweight in screen pixels
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>
2026-08-04 17:25:11 +09:00

dwg-dxf-viewer-sample

hmwebviewer 형제 폴더에 분리된 DWG/DXF 2D 뷰어 샘플입니다.

docs/modules-dwg-dxf.html 모듈 지도의 카드 (acadrust-dwg, dxf-parser, Viewer2D …)를 직접 조합해 동작하는 독립 프로젝트입니다. hmwebviewer 저장소 안에 의존하지 않습니다.

D:\MYCLAUDE_PROJECT\
  hmwebviewer\              ← 본 제품
  dwg-dxf-viewer-sample\    ← 이 샘플 (형제)

실행

cd D:\MYCLAUDE_PROJECT\dwg-dxf-viewer-sample
npm install
npm run dev
# → http://localhost:5173
UI 모듈 경로
Sample DWG ext2dacadrust-dwg WASMViewer2D
Sample DXF ext2ddxf-parser + hatch + adapterViewer2D
파일 드롭 / Open 확장자로 위 둘 중 하나

모듈 지도: 브라우저에서 docs/modules-dwg-dxf.html
조합 코드: src/main.ts


레이아웃

dwg-dxf-viewer-sample/
  docs/modules-dwg-dxf.html   # 모듈 조합 레시피 HTML
  public/
    fonts/NanumGothic-Regular.ttf
    samples/BasicSample.dwg
    samples/simple.dxf
  src/
    main.ts                   # 모듈을 import 해서 조립
    viewer2d/                 # 재사용 모듈 본체
      acadrust-dwg/           # WASM
      Viewer2D.js
      dwgParser.ts
      parseDxf.ts
      dxfAdapter.js
      dxfHatchHandler.js
      ext2d.ts
      slugText.ts
      …
  package.json
  vite.config.ts

조합 파이프라인

File/URL
  → ext2d (isDwg / isDxf)
  → parseDwgBuffer  |  parseDxfBuffer
       │                    │
       └ acadrust-dwg       ├ decodeDxf
                            ├ dxf-parser + dxfHatchHandler
                            └ dxfAdapter
  → CadParseResult
  → Viewer2D.load()  (+ three, slugText/font)

의존성

패키지 역할
three WebGL 렌더 / OrbitControls
dxf-parser DXF 텍스트 파싱
opentype.js TTF 글리프 (slugText)

WASM(acadrust_dwg_bg.wasm)은 src/viewer2d/acadrust-dwg/ 에 포함되어 있으며 Vite ?url import 로 로드됩니다.


다른 앱에 이식

  1. src/viewer2d/ 폴더 복사
  2. npm i three dxf-parser opentype.js
  3. 폰트 public/fonts/NanumGothic-Regular.ttf
  4. Vite: assetsInclude: ['**/*.wasm']
  5. src/main.ts 의 ①~④ 블록을 호스트에 붙이고 ⑤ UI만 교체

소스 동기화(선택): 본가 hmwebviewer/src/viewer2d 가 업데이트되면 해당 파일을 이 프로젝트 src/viewer2d 로 다시 복사하면 됩니다.


알려진 이슈 / 원본 반영 메모

이슈 문서
구형 한글 DWG TEXT 깨짐 (CP949→Latin-1 mojibake) docs/korean-dwg-text-encoding.md
Model + Paper 동시 렌더로 글자 겹침 / Layout 탭 docs/model-paper-space.md
dist2 정적 빌드 배포 절차 (공식 배포 스크립트 없음) docs/deploy-dist2-static-build.md
SubDMesh(MESH) 미표시 — parseResult 누락 + 큰 메쉬 잘림 docs/subdmesh-rendering.md
선가중치(Lineweight) 미적용 — parseResult 누락 + WebGL 1px 한계 docs/lineweight-rendering.md
↳ 위 둘의 측정 결과 + 상호작용(메쉬 선분이 굵기 버킷 상한을 넘길 위험) docs/improvement-results-2026-08-04.md

샘플 패치: fixDwgKoreanText, cadSpaces + Viewer2D 공간 필터, Model/Layout 탭.
원본 hmwebviewer 반영 절차는 각 문서를 따른다.


라이선스 메모

조각 라이선스
Viewer2D 포트 · 샘플 글루 MIT (hmwebviewer 계열)
acadrust (WASM 내부, read_mesh 로컬 패치 포함) MPL-2.0
dxf-parser · three MIT
NanumGothic OFL
S
Description
Standalone DWG/DXF 2D viewer sample — compose acadrust-dwg + dxf-parser + Viewer2D (Vite/Three.js)
Readme
13 MiB
Languages
JavaScript 50.7%
TypeScript 34.3%
HTML 15%