chriswhong

/* GET /tiles/:z/:x/:y.mvt */
/* Retreive a vector tile by tileid */
router.get('/tiles/:z/:x/:y.mvt', async (req, res) => {
  const { z, x, y } = req.params;

  // calculate the bounding polygon for this tile 
  const bbox = mercator.bbox(x, y, z, false);

  // Query the database, using ST_AsMVTGeom() to clip the geometries
  // Wrap the whole query with ST_AsMVT(), which will create a protocol buffer

missinglink

var map = L.map( 'map' );

L.Map.prototype.panToOffset = function (latlng, offset, options) {
    var x = this.latLngToContainerPoint(latlng).x - offset[0]
    var y = this.latLngToContainerPoint(latlng).y - offset[1]
    var point = this.containerPointToLatLng([x, y])
    return this.setView(point, this._zoom, { pan: options })
}

function centerMap(){