Add ground fills to the globe contract

Browse Source

engine.ground draws sets of polygons (with holes), discs, cells and
corridors draped on the surface, with fill and outline colours, order and
picks, written in bulk and committed. Every engine implements it:

- Cesium batches each set into one GroundPrimitive for fills and one
  GroundPolylinePrimitive for outlines and pixel corridors, classified
  against terrain and 3D tiles; sets that are not pickable stay out of the
  pick pass.
- Navara draws them in one screen pass after tone mapping that finds each
  pixel's ground from the scene depth and tests the items in its screen
  cell; long rings are split into edge bins. Measured at Dubai against
  SDK vector layers, the pass matched Cesium's frame time up to 10,000
  polygons with a few megabytes instead of 70 to 146, drew exact colours
  and outlines, and hid reliably across an engine switch, where vector
  layers hidden with update({ show: false }) never hid. Dense corridors
  remain its limit (10,000 cost 135 ms a frame).
- The fake engine keeps the same registry and CPU picks.

The contract suite checks it on both engines (Cesium 66/66, Navara 69/69).
Earthquakes and fire perimeters have unwired ground prototypes whose
drawing matches today's Cesium one (0.998 on Cesium, 0.976 on Navara).
docs/GLOBE-PRIMITIVES.md describes the primitives and when to use each.

...

This commit is contained in:

German Khokhlov committed 2026-11-07 05:14:42 +04:00

1 parent 6dc643182e

commit 974a0b6361

27 files changed

+5256 -685

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

scripts/package-boundaries.json

+206 -671

File diff suppressed because it is too large. Load diff