Function project

src/three/Space.tsx:321–325

(lat: number, lng: number)

  const refLng = (area[1].lng + area[0].lng) / 2;

  function project(lat: number, lng: number) {
    const x = (lng - refLng) * scale * Math.cos((refLat * Math.PI) / 180);
    const y = (lat - refLat) * scale;
    return new THREE.Vector2(x, y);
  }

  useEffect(() => {
    const south = area[1].lat;