Procedural Planets

Choose the body-scale representation first. One set of planet-space causes must drive geometry, normals, material identity, queries, diagnostics, water/coast handoffs, and atmosphere inputs.

Process

1. Gate body scale. Test whether curvature, horizon, global geodesy, orbit-to-ground transition, or atmosphere coupling is observable. A bounded local site belongs to procedural fields and geometry when tangent-plane sagitta, normal rotation, geodesic, horizon, and projected errors all pass. Read body-model-mapping-and-lod.md when deriving the body-scale gate.

   Complete when: the accepted camera and data domain either proves a local approximation or names at least one body-scale observable that requires this skill.