Radial tree + Forces

src/quadtree.ts

@@ -23,7 +23,7 @@ export interface Leaf {
 export function buildSpatialIndex(
   xs: Float32Array,
   ys: Float32Array
-): { sorted: Float32Array; leaves: Leaf[] } {
+): { sorted: Float32Array; leaves: Leaf[]; order: Uint32Array } {
   const n = xs.length;
   const order = new Uint32Array(n);
   for (let i = 0; i < n; i++) order[i] = i;
@@ -109,5 +109,5 @@ export function buildSpatialIndex(
     sorted[i * 2 + 1] = ys[src];
   }
 
-  return { sorted, leaves };
+  return { sorted, leaves, order };
 }