Convert v2 Tetrahedron Source (3DS)
Real deterministic 3DS tetrahedron source with four vertices, four triangular faces, and unit bounds for Convert v2 import coverage. Stable P8 artifact p8-convert-model-3ds.
| property | expected |
|---|---|
| vertices | 4 |
| faces | 4 |
| boundsMin | 0,0,0 |
| boundsMax | 1,1,1 |
Specifications
- Model
- tetrahedron
- Vertices
- 4
- Faces
- 4
- Bounds
- 0,0,0 to 1,1,1
- Source Order
- 2
- Delivery Mode
- download-only
- Provider
- converter-v2
- Provenance
- Synthetic deterministic P8 fixture generated by generation/p8_content.py; seed namespace 2026082300
- Fixture Reserve
- convert-v2
Testing contract
Expected to pass- Scenario
- Import the .3ds source and calculate topology plus axis-aligned bounds.
- Expected result
- Exactly four vertices and four triangular faces form one closed tetrahedron whose minimum is 0,0,0 and maximum is 1,1,1.
What is a .3ds file?
3DS is the chunked binary scene format associated with the original 3D Studio. Every structure begins with a 16-bit chunk identifier and a 32-bit length, allowing readers to skip unknown chunks while extracting meshes, faces, texture coordinates, materials, cameras, and keyframe data within its historical naming and index limits.
How to use this file
Use an example .3ds file to test little-endian chunk walking, declared-length bounds checks, mesh and material extraction, truncated-chunk failure handling, and preservation of known vertices, faces, and object names.
How to use this file for testing
“Convert v2 Tetrahedron Source (3DS)” is a deterministic Novus Examples fixture for Conversion testing, Mesh processing QA. The same content exported across many formats and linked as a group, so you can convert one and diff against the expected twin.
Documented properties for this file: 3DS · 128 bytes. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
3D and CAD fixtures carry one small, documented solid or scene. Convert and inspect against the known geometry, units, and structure; format twins let you diff interchange fidelity, and the 3D viewer previews the actual mesh.
Related files
- jsonConvert v2 AMF Semantic Geometry ReferenceJSON semantic reference for the AMF tetrahedron, publishing vertex order, face indices, bounds, and the closed-mesh contract. Stable P8 artifact p8-convert-model-amf-reference.
- jsonConvert v2 DRC Semantic Geometry ReferenceJSON semantic reference for the DRC tetrahedron, publishing vertex order, face indices, bounds, and the closed-mesh contract. Stable P8 artifact p8-convert-model-drc-reference.
- jsonConvert v2 FBX Semantic Geometry ReferenceJSON semantic reference for the FBX tetrahedron, publishing vertex order, face indices, bounds, and the closed-mesh contract. Stable P8 artifact p8-convert-model-fbx-reference.
- jsonConvert v2 LWO Semantic Geometry ReferenceJSON semantic reference for the LWO tetrahedron, publishing vertex order, face indices, bounds, and the closed-mesh contract. Stable P8 artifact p8-convert-model-lwo-reference.
- voxConvert v2 Occupied Voxels Source (VOX)Real deterministic VOX source with four occupied voxel coordinates, palette indices, and unit occupied-coordinate bounds for Convert v2 import coverage. Stable P8 artifact p8-convert-model-vox.
- amfConvert v2 Tetrahedron Source (AMF)Real deterministic AMF tetrahedron source with four vertices, four triangular faces, and unit bounds for Convert v2 import coverage. Stable P8 artifact p8-convert-model-amf.
Generated by generation/p8_content.py. Free for any use, no attribution required — license.