lowzoom_rendering.ts

function getFullRouteGeometry(coords, viewport) {
  const roundedZoom = Math.round(viewport.zoom)
  const fromCache = cache.get(roundedZoom).get(coords)
  if (fromCache) return clipToViewport(fromCache, viewport);

  const simplified = simplify(coords, 1 / roundedZoom)
  cache.get(roundedZoom).set(coords, simplified);

  return clipToViewport(simplified, viewport);
}