feat(three/tree-layer): crop/fruit visualisation, organic canopy & per-tree variety#533
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…-tree variety
## TreeLayer additions
### Crop / fruit / flower (getCrop)
- New `CropConfig` type exported from index: `{ color, count, droppedCount?, radius }`
- New `getCrop` accessor (returns `CropConfig | null`) renders two new sub-layers:
- `live-crops` — spheres placed in the outer 90–102 % shell of the canopy
ellipsoid (equatorial band only, never on crown or base)
- `dropped-crops` — uniform-disk ground scatter within canopy footprint,
rendered at 45 % opacity for a fallen/weathered look
- Crop positions are seeded deterministically from each tree's lng/lat via
splitmix32 so they are stable across re-renders and sizeScale changes
- `sizeScale` applied to crop sphere radius in lock-step with all other dims
### Organic canopy geometry (tree-geometry.ts)
- `jitterSmooth()`: per-species smooth low-frequency sinusoidal vertex
displacement (4 waves, 2–5 cycles per axis) — no mesh gaps, zero runtime cost
- oak ±18 %, cherry ±20 %, birch ±14 %, palm ±10 %
- Pine tiers: per-tier radius ±20 %, height ±15 %, lateral drift that
increases from zero at the bottom tier (clean trunk join) to ±0.10 units
at the top (windswept silhouette)
### Per-tree variety (tree-layer.ts)
- `getOrientation [0, angle, 0]`: position-derived yaw (vertical-axis bearing)
so pine tiers face different compass directions per tree
- Asymmetric XY canopy scale ±15 % from position hash: every canopy is a
unique oval, never a perfect circle in plan view
- Both are zero extra draw calls — pure GPU instancing attributes
### Bug fixes
- Pine level→mesh bug: previously all pine instances used the first level's
mesh; now one sub-layer is created per branch-level count with filtered data
- `CANOPY_TRUNK_OVERLAP` increased 0.10→0.22: canopy base embeds 22 % of
canopy height into trunk, reliably hiding the trunk-top disk
- `updateTriggers` added to trunk and canopy sub-layers so sizeScale slider
correctly invalidates `getScale` attribute buffers
- Crop phi clamped to equatorial band (cosPhi in [-0.80, 0.80]) so crops
never appear on the canopy crown
### Wild-forest example
- 9 forest zones including citrus orchard and almond grove with crop configs
- `showCrops` checkbox toggle + `sizeScale` slider
- `vite.config.ts` aliases `@deck.gl-community/three` to TypeScript source
for instant HMR without dist rebuild
### Docs
- README fully updated with `CropConfig` type reference, crop placement
details, updated feature list, and wild-forest example instructions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
getCrop/CropConfigAPI — new accessor renders live fruit/flower spheres nestled into the outer canopy shell and semi-transparent dropped fruit on the ground; positions are deterministically seeded from each tree's lng/lat so they are stable across re-rendersjitterSmooth) baked into each species mesh at init time; species-tuned magnitudes (oak ±18 %, cherry ±20 %, birch ±14 %, palm ±10 %); no mesh gaps, zero runtime costCANOPY_TRUNK_OVERLAPraised to 0.22,updateTriggersfor sizeScale on trunk + canopy sub-layers, crop phi clamped to equatorial band (no crops on canopy crown)vite.config.tsfor source-aliased HMR without dist rebuildCropConfigtype reference, crop placement mechanics, updated feature list, example run instructionsTest plan
yarn startfromexamples/three/wild-forest/and verify all 9 zones rendersizeScaleslider — both trunk and canopy scale correctly at all values🤖 Generated with Claude Code