Add support for legacy AutoCAD R14 ASCII DWF

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 0.6.5 - 2026-08-24
+
+- Added a linear-time parser for pre-DWF-6 readable WHIP!/W2D streams such as AutoCAD R14 DWF V00.34 files.
+- Added palette/background handling and core `C`, `L`, `P`, `T`, `M`, `F/f`, and `V/v` opcode support, including multiline counted point sets and correct triangle-strip triangulation.
+- Added a public synthetic legacy ASCII regression fixture while keeping customer drawings out of the repository.
+- Fixed strict TypeScript builds for path-command bounds calculation so both CI and the Cloudflare Pages demo build remain green.
+
 ## 0.6.4 - 2026-06-12
 
 - Restored colorful W3D/HSF 3D rendering for eModel files whose ContentDefinition instance count does not match decoded shell geometry, avoiding incorrect ordinal material binding that could wash Robot Arm into gray.

README.md

@@ -13,7 +13,7 @@ English is the default language for the README, npm package, and online demo. Th
 | npm | https://www.npmjs.com/package/dwf-viewer |
 | scoped npm | https://www.npmjs.com/package/@flyfish-dev/dwf-viewer |
 
-Current version: `0.6.4`
+Current version: `0.6.5`
 
 ## Why
 
@@ -36,6 +36,7 @@ DWF Viewer 是面向 Web 的开源纯前端 DWF/DWFx 预览组件。它在浏览
 | DWFx / OPC package | Supported |
 | XPS FixedPage 2D sheets | Supported common subset with WebGL vector acceleration and Canvas text/image overlay |
 | Classic binary WHIP!/W2D 2D sheets | Supported for core geometry/text/images used by Autodesk samples |
+| Legacy readable ASCII WHIP!/W2D (including AutoCAD R14 DWF V00.34) | Supported for palette colors, backgrounds, core geometry, markers, fill state, and visibility |
 | Textual W2D pages | Supported for smoke tests and simple sheets |
 | W3D/HSF 3D eModel shell geometry | Supported: uncompressed, CS_TRIVIAL, and Edgebreaker shell meshes |
 | Three.js adapter | Supported |
@@ -131,6 +132,12 @@ Version `0.6.3` adds a repair-and-fallback path for legacy Autodesk eModel XML m
 
 This keeps valid 3D DWFx models from surfacing noisy `EMODEL_CONTENTDEF_PARSE_FAILED` diagnostics when only optional metadata XML is malformed.
 
+## Legacy AutoCAD R14 ASCII DWF
+
+Version `0.6.5` recognizes pre-DWF-6 readable WHIP!/W2D streams such as `DWF V00.34` files produced by AutoCAD R14. These files are plain opcode streams rather than DWF 6+ ZIP packages, so the loader routes them through a bounded stream parser instead of the generic line-oriented text fallback.
+
+The supported legacy subset includes palette and background colors, `C`, `L`, `P`, `T`, `M`, `F/f`, and `V/v` opcodes, multiline counted point sets, and triangle-strip triangulation. The source background is emitted consistently across Canvas, WASM, and WebGL render paths.
+
 ## Three.js Integration
 
 ```ts
@@ -173,6 +180,7 @@ The demo examples are listed in `examples/manifest.json` and are intentionally d
 | Example | Purpose |
 |---|---|
 | `blocks-and-tables.dwf` | Default demo. Binary WHIP!/W2D ePlot sample with fast loading and a clear first impression |
+| `legacy-ascii-v0034.dwf` | Synthetic AutoCAD R14-style readable ASCII DWF regression covering multiline geometry, palette/background handling, triangle strips, fill state, markers, and visibility |
 | `autodesk-floor-plans.dwfx` | Multi-page architectural DWFx/XPS sample, using A03 First Floor Plan for WebGL XPS, embedded font, and thin-line overview validation |
 | `robot-arm.dwfx` | 3D W3D/HSF eModel with shell meshes, scene tree, materials, textures, and saved views |
 | `minimal-xps.dwfx` | Small DWFx/XPS FixedPage sample |

examples/legacy-ascii-v0034.dwf

@@ -0,0 +1,23 @@
+(DWF V00.34)
+(Author 'Regression fixture')
+(Creator 'dwf-viewer')
+(ColorMap 4
+  0,0,0,255 255,255,255,255 255,0,0,255 0,255,0,255)
+(Background 0)
+C 1
+L 0,0 100,0
+P 5 0,0 100,0 100,100
+    50,125 0,100
+C 2
+T 4 20,20 20,80 80,20 80,80
+F
+C 3
+P 3 10,10 50,90 90,10
+f
+M 1 50,50
+v
+(URL 'javascript:void(0);')
+L 0,0 100,100
+V
+L 0,100 100,100
+(EndOfDWF)

examples/manifest.json

@@ -12,6 +12,19 @@
       "maxWarnings": 0
     }
   },
+  {
+    "id": "legacy-ascii-v0034",
+    "title": "AutoCAD R14 · Legacy ASCII DWF V00.34",
+    "kind": "2d",
+    "path": "legacy-ascii-v0034.dwf",
+    "description": "Dependency-free regression fixture for pre-DWF-6 readable WHIP!/W2D streams, including multiline point sets, palette colors, triangle strips, fill state, visibility, and source background.",
+    "descriptionZh": "早期 AutoCAD 可读 ASCII DWF V00.34 回归示例，覆盖跨行点集、调色板、三角带、填充、可见性和源文件背景。",
+    "expected": {
+      "pageKind": "w2d-text",
+      "pages": 1,
+      "maxWarnings": 0
+    }
+  },
   {
     "id": "autodesk-floor-plans-dwfx",
     "title": "Autodesk Floor Plans · 2D DWFx/XPS",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dwf-viewer",
-  "version": "0.6.4",
+  "version": "0.6.5",
   "private": false,
   "type": "module",
   "description": "World's first open-source pure frontend DWF/DWFx preview component with WebGL XPS/W2D 2D rendering, W3D/HSF 3D rendering, embedded fonts, and WASM fallback.",

scripts/validate-production.mjs

@@ -5,21 +5,35 @@ const targets = [
   { label: 'Autodesk Floor Plans DWFx A03', path: 'examples/autodesk-floor-plans.dwfx', pageIndex: 3, kind: 'xps-fixed-page', minPages: 18, maxNonInfoDiagnostics: 0 },
   { label: 'Robot Arm 3D DWFx', path: 'examples/robot-arm.dwfx', kind: 'w3d-model', minMeshes: 30, minTriangles: 40000, minDistinctMeshColors: 24, maxNonInfoDiagnostics: 0, maxPageDiagnostics: 0 },
   { label: '2D sample DWFx', path: 'examples/minimal-xps.dwfx', kind: 'xps-fixed-page' },
-  { label: 'official binary W2D DWF', path: 'examples/blocks-and-tables.dwf', kind: 'w2d-text' }
+  { label: 'official binary W2D DWF', path: 'examples/blocks-and-tables.dwf', kind: 'w2d-text' },
+  {
+    label: 'AutoCAD R14 legacy ASCII DWF V00.34',
+    path: 'examples/legacy-ascii-v0034.dwf',
+    kind: 'w2d-text',
+    expectedPrimitives: 8,
+    expectedPrimitiveTypes: { polyline: 3, polygon: 3, rect: 2 },
+    expectedBackdrop: 'rgb(0, 0, 0)',
+    maxNonInfoDiagnostics: 0
+  }
 ];
 
 let failed = false;
 for (const t of targets) {
   const doc = await openDwfDocument(await readFile(t.path), { fileName: t.path });
   const page = doc.pageData[t.pageIndex ?? 0];
   const nonInfo = (page?.diagnostics ?? []).filter(d => d.level !== 'info');
+  const primitiveTypes = page?.kind === 'w2d-text' ? countPrimitiveTypes(page.primitives) : undefined;
+  const backdrop = page?.kind === 'w2d-text' && page.primitives[0]?.type === 'rect' ? page.primitives[0].fill : undefined;
   const record = {
     label: t.label,
     documentKind: doc.kind,
     pages: doc.pageData.length,
     pageIndex: t.pageIndex ?? 0,
     pageKind: page?.kind,
     pageName: page?.name,
+    primitives: page?.kind === 'w2d-text' ? page.primitives.length : undefined,
+    primitiveTypes,
+    backdrop,
     meshes: page?.kind === 'w3d-model' ? page.model.meshes.length : undefined,
     triangles: page?.kind === 'w3d-model' ? page.model.stats.triangleCount : undefined,
     distinctMeshColors: page?.kind === 'w3d-model' ? distinctMeshColors(page) : undefined,
@@ -32,6 +46,18 @@ for (const t of targets) {
   if (typeof t.minMeshes === 'number' && (!(page?.kind === 'w3d-model') || page.model.meshes.length < t.minMeshes)) failed = true;
   if (typeof t.minTriangles === 'number' && (!(page?.kind === 'w3d-model') || page.model.stats.triangleCount < t.minTriangles)) failed = true;
   if (typeof t.minDistinctMeshColors === 'number' && (!(page?.kind === 'w3d-model') || distinctMeshColors(page) < t.minDistinctMeshColors)) failed = true;
+  if (typeof t.expectedPrimitives === 'number' && (!(page?.kind === 'w2d-text') || page.primitives.length !== t.expectedPrimitives)) failed = true;
+  if (t.expectedPrimitiveTypes) {
+    if (!(page?.kind === 'w2d-text')) {
+      failed = true;
+    } else {
+      const actual = countPrimitiveTypes(page.primitives);
+      for (const [type, count] of Object.entries(t.expectedPrimitiveTypes)) {
+        if ((actual[type] ?? 0) !== count) failed = true;
+      }
+    }
+  }
+  if (typeof t.expectedBackdrop === 'string' && backdrop !== t.expectedBackdrop) failed = true;
   if (typeof t.maxNonInfoDiagnostics === 'number' && nonInfo.length > t.maxNonInfoDiagnostics) failed = true;
   if (typeof t.maxPageDiagnostics === 'number' && (page?.diagnostics?.length ?? 0) > t.maxPageDiagnostics) failed = true;
 }
@@ -88,3 +114,9 @@ if (failed) process.exit(1);
 function distinctMeshColors(page) {
   return new Set(page.model.meshes.map(mesh => (mesh.color ?? []).map(v => Number(v).toFixed(4)).join(','))).size;
 }
+
+function countPrimitiveTypes(primitives) {
+  const counts = {};
+  for (const primitive of primitives) counts[primitive.type] = (counts[primitive.type] ?? 0) + 1;
+  return counts;
+}