B-Rep solid reconstruction
Does not ship tessellation meshes as final deliverables. Rebuilds standard B-Rep solids; mesh remaining in output marks failure for that part.
Product
L3D Emit
Turn model views into engineering deliverables.
L3D Emit rebuilds standard B-Rep solids from Navisworks tessellation and properties, then produces SAT, 3D DWG, 2D drawings, and Evidence. Not a generic format converter — a product for deliverables detailed engineering can continue from.
Output modes, partitioning, and desktop result classification advance on the Alpha line. Do not conflate Alpha-line scope with main.
Problem
Review does not end in 3D. Drawings, solids, and evidence are required.
Moving a viewed scope into detailed design, submittal, and record needs solids and coordinate-true 2D backgrounds — plus evidence of that moment — not meshes alone. The same outputs should run without Navisworks or AutoCAD installed.
What it does
Rebuilds B-Rep from tessellation and emits deliverables.
L3D Emit reads NWD/NWC/NWF, rebuilds OdDb3dSolid-class B-Rep from tessellation and properties, then emits SAT, 3D Solid DWG, 2D DWG (silhouette/HLR), and Evidence SVG/HTML by selected output mode. The engine is ODA-based and does not depend on Navisworks or AutoCAD APIs.
- Input: NWD / NWC / NWF (NWD uses Saved Viewpoints; other formats use defined views)
- Core: tessellation → B-Rep solid reconstruction
- Output: SAT, 3D DWG, 2D DWG, Evidence SVG/HTML
I/O flow
From model view to deliverable
A mesh left in a final deliverable means that part failed. The goal is solids and engineering-ready 2D.
- 01
NWD / NWC / NWF
Model and viewpoint selection
- 02
B-Rep reconstruction
Tessellation → solids
- 03
SAT / 3D DWG
Solid deliverables
- 04
2D DWG / Evidence
Backgrounds and evidence packages
- 05
Detailed design / review
AutoCAD Flatshot · Smart3D Reference, etc.
Capabilities
What the output contract covers
SAT · 3D Solid DWG
Supports ACIS SAT and 3D Solid DWG paths. SAT is often preferred for very large models.
2D engineering backgrounds
Produces silhouette/HLR-based 2D DWG from solids so detailed design can continue on coordinate-true backgrounds — providing accurate backgrounds, not “finishing the drawing automatically.”
Evidence
Can emit Evidence SVG/HTML that reflects a Saved Viewpoint’s camera, clip, and redlines — preserving model state at review time.
Host-independent execution
Runs without Navisworks or AutoCAD installed or their APIs. Deliverables come from an ODA-based engine and orchestrator.
Relation to Engineering Context
A deliverable layer — not source-of-truth authority.
Emit does not replace Process or Spatial sources. It continues NWD/NWC from S3DX or existing Navisworks models into engineering deliverables and Evidence, supporting L3D Vue review and detailed-engineering productivity.
Workflow
A typical emit path
- 01
Choose NWD/NWC/NWF and the target view (Saved Viewpoint or defined view).
- 02
Select output mode (SAT, 3D DWG, 2D, Evidence, etc.) and scope.
- 03
Rebuild B-Rep and generate the selected deliverables.
- 04
Use the run log for failures and partial success; continue design only from solid parts.
- 05
Hand 2D backgrounds and Evidence into detailed design and review workflows.
Boundaries and authority
Why this is not a generic converter
We stay within supported formats, output modes, and Alpha vs main scope. Restoration rates and productivity figures are not published without verification.
| Layer | Role |
|---|---|
| Navisworks model | Input source (views, tessellation, properties) |
| B-Rep reconstruction | Core transform in the Emit engine |
| SAT / DWG / Evidence | Engineering deliverables |
| Detailed design tools | Authorship and submittal authority stay with users and source CAD |
- No perfect B-Rep restoration, all-format, or 100% automatic drawing claims.
- No unverified productivity or accuracy percentages.
- Not presented as a Navisworks/AutoCAD API-dependent product.
- Alpha-line features are not described as identical to main.