NASSCAD 4.2.7

Offline single-file 3D CAD modeler — Manifold WASM CSG / Three.js

NASSCAD is a fully offline, browser-based 3D CAD modeler. No server. No install. No internet. Open the HTML file — it works.

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✨ Features

• 100% offline — zero CDN, zero server, zero dependencies to install
• 17 watertight primitives — ArcSphere, Cylind, Cubic, Tore, Gear, Screw, Pipe, RevSolid, Gen and more
• Non-destructive CSG Tree — boolean operations with full arborescent history (200 undo/redo levels, IDB-persistent)
• Progressive CSG (2-pass) — Manifold WASM engine + BSP fallback for maximum robustness
• BVH Raycaster — AABB cache + firstHitOnly for sub-millisecond selection
• GeometryPool — 512MB–2GB custom binary arena, GC mark-and-sweep, DataView global
• Box-select — rectangle NDC multi-selection
• NassScript — built-in scripting interface
• Import / Export — STL, OBJ, 3MF
• Threads — parametric M2 to M20 (UNC + metric)
• Snap — 0.1 mm precision
• X-Ray mode, Rotation Gizmo 3-axis, Sphere resolution slider

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🏗 Architecture

Component	Details
Renderer	Three.js r128
CSG Engine	Manifold WASM (Worker Pool ×N async) + BSP fallback
Geometry Pool	512MB–2GB binary arena, GC mark-and-sweep
Undo / Redo	200 levels — TypedArrays structured clone, IDB-persistent
CSG History	Arborescent _csgTree Map — serialized in IndexedDB
Raycaster	BVH (AABB cache per mesh, firstHitOnly)
AABB Cache	Box3 world-space per mesh — rebuilt on position/scale change
Selection	Box-select rectangle NDC

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📦 Dependencies (all local — zero CDN)

Library	Author	License
three.js	Mr.doob & community	MIT
manifold.js + manifold_worker.js	Emmett Lalish et al.	Apache 2.0
helvetiker_regular/bold.js	MAGENTA Ltd / MgOpen Modata	MgOpen License
optimer_regular/bold.js	MAGENTA Ltd / MgOpen Cosmética	MgOpen License
gentilis_regular/bold.js	J. Victor Gaultney / SIL International	SIL OFL 1.1
NUTS_AND_BOLTS.js	NassLab	CC BY-NC 4.0
nasscad_logs.js	NassLab	CC BY-NC 4.0

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🚀 Usage

No installation required.

# Clone the repository
git clone https://github.com/Nx-Nass/Nasscad_4.2.7.git

# Open in your browser
open NASSCAD_V4_2_7_AIO.htm   # macOS
start NASSCAD_V4_2_7_AIO.htm  # Windows
xdg-open NASSCAD_V4_2_7_AIO.htm  # Linux

Or download the ZIP and open open NASSCAD_V4_2_7_AIO.htm directly in Chrome (best performance), Firefox, or Edge.

⚠️ For full WASM support, open via a local server or a browser that allows local file access (Chrome with --allow-file-access-from-files, or VS Code Live Server).

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👥 Authors

Role
Architect & Lead Developer	Nasser — NassLab, Marseille, France
AI Developer	Claude Sonnet 4.6 — Anthropic

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📄 License

© 2026 NassLab — Nasser, France

Distributed under the Creative Commons BY-NC 4.0 license:

• Personal and non-commercial use — free, redistribution allowed with attribution
• Commercial use — written agreement required from NassLab

View full license →

No implied warranty. The author cannot be held liable for any damage resulting from the use of this software.

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NASSCAD — co-developed with Claude Sonnet 4.6 · Marseille, 2026