function iceBand
universe/src/bands.ts:582
iceBand(sketch: TerrainSketch, grammar: SurfaceGrammar, direction: Vec3, peak: number, floor: number) → number
The icy-active set: chaos terrain, sulci, and tiger-stripe troughs.
All three are the same cause — a shell being worked by a tide it cannot relax — and they are separated because they look nothing alike. Chaos is Europa's block rafts: crust broken into pieces, rotated, and refrozen at different heights, which is a Voronoi field with plateau interiors and sharp walls. Sulci are Ganymede's grooved bands, parallel ridges over tens of kilometers, which is ridged noise with one axis compressed fivefold. Tiger stripes are Enceladus's four parallel fractures — a great-circle trough with a raised ridge on each shoulder, which is what a double ridge is.
- sketchTerrainSketch
- Undocumented
- grammarSurfaceGrammar
- Undocumented
- directionVec3
- Undocumented
- peaknumber
- Undocumented
- floornumber
- Undocumented
Returnsnumber