# CesiumGS/3d-tiles

Specification for streaming massive heterogeneous 3D geospatial datasets :earth_americas:

Repository: https://github.com/CesiumGS/3d-tiles
Canonical: https://ross.abutalabs.com/products/3d-tiles
Language: Batchfile
License Family: other
Topics: 3d-tiles, gltf, ogc, terrain, photogrammetry, point-cloud, vector-data, 3d-models, geospatial, gis, specification, spatial-data
Last push: 2026-08-26T21:36:38+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 4107, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2598, forks 503 (observed 2026-08-28T04:07:03.270416+00:00)

## What it is
3D Tiles is an open specification (and OGC Community Standard) for streaming, sharing, and visualizing massive heterogeneous 3D geospatial datasets such as photogrammetry, BIM/CAD models, point clouds, and 3D buildings. Built on glTF, it defines a spatial hierarchy for efficient streaming and per-feature metadata for interactive styling and querying.

## Use cases
- stream massive 3D city models to a web viewer
- convert photogrammetry and point clouds into a streamable format
- fuse BIM/CAD models with terrain and 3D buildings
- implement a runtime engine that renders tiled 3D geospatial content
- query and style per-feature metadata in 3D datasets
- publish OGC-compliant 3D geospatial data

## When to choose
- you need an open, interoperable format for huge 3D geospatial datasets
- you are building a viewer or engine that streams 3D content from global scale down to building interiors
- you need per-feature metadata, filtering, and styling in 3D tiles

## When to avoid
- you only need small static 3D models without streaming or tiling
- you need a ready-made converter or viewer rather than a specification

## Facets
- artifact type: learning-resource
- maturity: stable
- function: graphics, geospatial, documentation
- domain: graphics, documentation
- platform: cross-platform
- tags: 3d-tiles, gltf, ogc-standard, specification, point-clouds, photogrammetry, bim, streaming, geospatial, maps, web-server

## Member repositories
- CesiumGS/3d-tiles (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:03.270416+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:21:18.289455+00:00, confidence not recorded.
  - readme: https://github.com/CesiumGS/3d-tiles (fetched 2026-08-28T04:07:03.270416+00:00, sha 30fcd5d1a593)
- Data as of 2026-08-30T08:39:29.467469+00:00.