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Organic context tree: contain the cloud on busy sessions #72

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Merged
kateebonner merged 1 commit into from
Jul 27, 2026
Merged

Organic context tree: contain the cloud on busy sessions #72

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20 changes: 11 additions & 9 deletions packages/ui/src/amicode/context-tree-engine.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -200,8 +200,8 @@ interface TEdge {
recall: boolean
}

const TURN_RING = 170 // rest distance root -> turn
const LEAF_REST = 80 // rest distance turn -> leaf
const TURN_RING = 150 // base rest distance root -> turn (grows with turn count)
const LEAF_REST = 70 // rest distance turn -> leaf
const RECALL_REST = 200 // weak spring across recall links
const SETTLE_STEPS = 240
const HALF: Record<string, number> = { root: 8, turn: 5.5, agent: 5 }
Expand Down Expand Up @@ -290,7 +290,7 @@ export function createContextTreeEngine(
const spanX = Math.max(maxX - minX, 1)
const spanY = Math.max(maxY - minY, 1)
cam.tk = Math.min((W - padX * 2) / spanX, (H - padY * 2) / spanY, 1.6)
cam.tk = Math.max(cam.tk, 0.25)
cam.tk = Math.max(cam.tk, 0.04)
cam.tx = (minX + maxX) / 2
cam.ty = (minY + maxY) / 2
}
Expand Down Expand Up @@ -358,12 +358,14 @@ export function createContextTreeEngine(

// --- seed (deterministic): root center; turns on the ring; leaves fanned
const turns = nextNodes.filter((n) => n.depth === 1)
// busy sessions need a wider orbit or the clusters shove each other apart
const ring = Math.min(TURN_RING + turns.length * 12, 320)
rootNode.tx = 0
rootNode.ty = 0
turns.forEach((t, i) => {
const ang = -Math.PI / 2 + (i * Math.PI * 2) / Math.max(turns.length, 3)
t.tx = Math.cos(ang) * TURN_RING
t.ty = Math.sin(ang) * TURN_RING
t.tx = Math.cos(ang) * ring
t.ty = Math.sin(ang) * ring
const leaves = nextNodes.filter((n) => n.parent === t)
leaves.forEach((l, j) => {
const spread = Math.min(Math.PI * 0.9, 0.5 * Math.max(leaves.length - 1, 1))
Expand Down Expand Up @@ -391,7 +393,7 @@ export function createContextTreeEngine(
dx = jitter(a * 7 + b) || 0.5
dy = jitter(a - b * 3) || -0.5
}
const f = Math.min(2600 / d2, 8)
const f = Math.min(1400 / d2, 6)
const d = Math.sqrt(d2)
fx[a] += (dx / d) * f
fy[a] += (dy / d) * f
Expand All @@ -405,7 +407,7 @@ export function createContextTreeEngine(
const dx = e.t.tx - e.s.tx
const dy = e.t.ty - e.s.ty
const d = Math.max(Math.sqrt(dx * dx + dy * dy), 0.01)
const rest = e.recall ? RECALL_REST : e.s.depth === 0 ? TURN_RING : LEAF_REST
const rest = e.recall ? RECALL_REST : e.s.depth === 0 ? ring : LEAF_REST
const k = e.recall ? 0.004 : 0.02
const f = (d - rest) * k
fx[ai] += (dx / d) * f
Expand All @@ -416,8 +418,8 @@ export function createContextTreeEngine(
for (let i = 0; i < nextNodes.length; i++) {
const n = nextNodes[i]
if (n.depth === 0) continue // the root IS the world origin
fx[i] += -n.tx * 0.001
fy[i] += -n.ty * 0.001
fx[i] += -n.tx * 0.004
fy[i] += -n.ty * 0.004
n.tx += Math.max(-7, Math.min(7, fx[i]))
n.ty += Math.max(-7, Math.min(7, fy[i]))
}
Expand Down
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