Vena showcase media

Source project: https://github.com/rafaelaugustos/vena-ns/blob/9b4b41948d14ef5168f91ec7c9805df5a046daec/README.md

# Anatomy model attribution

BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International.

- Source: [official BodyParts3D archive](https://dbarchive.biosciencedbc.jp/en/bodyparts3d/download.html).
- Version: BodyParts3D 4.0 (released 2013-05-16), IS-A OBJ archive, polygon reduction rate 99%.
- OrganUI source retrieval date: 2026-09-22. Vena retrieved the prepared GLB on 2026-11-05.
- Model/data license: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), as specified by the [archive license](https://dbarchive.biosciencedbc.jp/en/bodyparts3d/lic.html), updated 2025-02-27.
- Prepared model and source mapping: [OrganUI at c72ce665](https://github.com/organui/heart-3d/tree/c72ce6654ff8e282942f97750d3104f55ef4fc3d).
- Original work: Mitsuhashi et al., “BodyParts3D: 3D structure database for anatomical concepts”, Nucleic Acids Research 37 (2009), D782–D785. [DOI](https://doi.org/10.1093/nar/gkn613).

Changes by OrganUI: selected meshes, grouped meshes by source concept, triangulated faces, recentered and uniformly scaled coordinates, changed axes from Z-up to Y-up, recomputed smooth normals, assigned illustrative colors, and converted OBJ to GLB. No further decimation or invented anatomy. The two ventricular walls remain one mesh; separate cavity surfaces represent interior spaces, not muscle tissue.

Changes by Vena: sampled 40,000 points from the external surfaces, omitted the two cavity meshes, scaled and translated the coordinates, assigned red RGBA values, and exported a binary point cloud. Runtime shaders add illustrative pulse, pointer displacement and lighting. These effects are artistic, not a physiological simulation.

Legacy OBJ headers cite CC BY-SA 2.1 Japan and link to the same official archive license URL. This distribution relies on the archive's current CC BY 4.0 grant. OrganUI documents the discrepancy in its [model provenance](https://github.com/organui/heart-3d/blob/c72ce6654ff8e282942f97750d3104f55ef4fc3d/docs/MODEL_PROVENANCE.md).

Application code licensing does not relicense this model or its derived screenshots. Preserve this attribution, the model license link, and the modification notice when redistributing the model or images of it. DBCLS does not endorse this demonstration. The source release notes caution that the database can contain missing or incorrect anatomical representations.

# Anatomy assets

The torso is sampled from MakeHuman's `hm08` base mesh, released under CC0 in September 2020. Only the body surface is used; helper geometry is excluded. The arms are lowered and the mesh is cropped before sampling.

- Source: https://github.com/makehumancommunity/makehuman/blob/master/makehuman/data/3dobjs/base.obj
- License: [MAKEHUMAN-LICENSE.md](MAKEHUMAN-LICENSE.md)
- Export: `python3 scripts/sample-torso.py path/to/base.obj`

The torso has 160,000 surface points. Its shading comes from the mesh normals; a fixed random seed keeps the export reproducible.

The heart uses BodyParts3D anatomy prepared as a GLB by OrganUI. The exporter samples 40,000 points from the external surfaces, excludes the ventricular cavities, scales and positions the result inside the torso, and replaces the original colors with red lighting values. The app adds animated deformation and lighting.

- Pinned input: [OrganUI heart.glb](https://github.com/organui/heart-3d/blob/c72ce6654ff8e282942f97750d3104f55ef4fc3d/public/models/heart.glb)
- Attribution and license: [HEART-ATTRIBUTION.md](HEART-ATTRIBUTION.md)
- Export: `python3 scripts/sample-heart.py path/to/heart.glb`

Both scripts use Python's standard library. Their outputs are committed under `src/assets/anatomy/`, so running the app needs no downloads or export tools. Each point contains seven little-endian Float32 values: XYZ and RGBA, with no file header. `npm test` validates the bundled data.

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Jolt website changes: the creator-provided English recording is trimmed by 3.25 seconds, resized to 804×1748, and compressed as H.264 at the original playback speed. Still images are extracted and cropped. No anatomical model is modified by this website.