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idle-intelligence/ridgeline-terrain

ridgeline terrain Baked global elevation heightfields for ridgeline, a 3D explorer of the solar system's solid worlds (Rust→WASM + WebGPU) that draws each body as a globe of stacked latitude ridgelines. Try the demo → · it streams these files straight from this dataset. Derived from public-domain government datasets (U.S. Government works — no copyright); this repo redistributes resampled, reformatted versions. Files File Body Grid Source… See the full description on the dataset page: https://huggingface.co/datasets/idle-intelligence/ridgeline-terrain.

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ridgeline terrain

Baked global elevation heightfields for ridgeline, a 3D explorer of the solar system's solid worlds (Rust→WASM + WebGPU) that draws each body as a globe of stacked latitude ridgelines.

**Try the demo →** · it streams these files straight from this dataset.

Derived from public-domain government datasets (U.S. Government works — no copyright); this repo redistributes resampled, reformatted versions.

Files

File	Body	Grid	Source
`heightfield.bin`	Earth	12288×6144	NOAA ETOPO 2022 (60 arc-sec, ice surface)
`water_mask.bin`	Earth	12288×6144	derived from ETOPO (uint8, 1 = water)
`moon_heightfield.bin`	Moon	7680×3840	NASA LRO LOLA LDEM
`mars_heightfield.bin`	Mars	11520×5760	NASA MGS MOLA MEGDR (32 ppd)
`venus_heightfield.bin`	Venus	8192×4096	NASA Magellan topography (USGS v02)
`mercury_heightfield.bin`	Mercury	11520×5760	NASA MESSENGER USGS DEM v2 (÷2)
`sun_heightfield.bin`	Sun	2880×1440	NASA SDO/HMI synoptic magnetogram (CR2300) — signed Gauss, not elevation
`ceres_heightfield.bin`	Ceres	11520×5760	NASA Dawn FC HAMO DTM (DLR/USGS)
`vesta_heightfield.bin`	Vesta	11520×5760	NASA Dawn FC HAMO DTM — 2 m/unit (`elev_scale_m` in meta)
`enceladus_heightfield.bin`	Enceladus	7680×3840	Cassini global DEM (Schenk & McKinnon 2024)
`pluto_heightfield.bin`	Pluto	11520×5760	New Horizons LORRI/MVIC — ~54% far side is synthetic fill
`charon_heightfield.bin`	Charon	5760×2880	New Horizons LORRI/MVIC — ~54% far side is synthetic fill
`*_heightfield_d4.bin` / `_d16.bin`	all	÷4 / ÷16	area-mean resolution tiers for progressive loading
`*_meta.json`	—	—	grid dims, bbox, elevation range per body (tier dims = full ÷ f)

Format

Raw little-endian int16 meters (no header), row-major row*width + col; row 0 = north (+90°), col 0 = west (−180°). Earth is relative to sea level with ocean clamped to 0; Moon relative to the 1737.4 km sphere; Mars relative to the areoid (no clamp — Hellas −8.2 km to Olympus Mons +21.2 km); Venus relative to the 6051 km sphere (radar gaps filled by per-row wrapped interpolation); Mercury relative to the 2439.4 km sphere. The Sun file is NOT elevation: it's the HMI radial magnetic field, value = sign(B)·√(|B|/1500)·30000 capped at ±10000 (inverse in sun_meta.json). Read dims from the matching *_meta.json, never hardcode. HMI data courtesy of NASA/SDO and the HMI science team.

Bake pipelines (download + resample + verify) live in the ridgeline repo under data/bake/.