Function buildGrid

dashboard/holographic/src/semanticMap/hitTest.ts:13–22

(placed: PlacedPoint[])

}

export function buildGrid(placed: PlacedPoint[]): Map<string, number[]> {
  const grid = new Map<string, number[]>();
  placed.forEach((p, i) => {
    const key = `${Math.floor(p.x / GRID_CELL)},${Math.floor(p.y / GRID_CELL)}`;
    const cell = grid.get(key);
    if (cell) cell.push(i);
    else grid.set(key, [i]);
  });
  return grid;
}

export function findNearest(
  placed: PlacedPoint[],