leaflet.vectorgrid/src/Symbolizer.PolyBase.js

Display gridded vector data (sliced GeoJSON or protobuf vector tiles) in Leaflet 1.0

// Contains mixins which are common to the Line Symbolizer and the Fill Symbolizer.

export var PolyBase = {
	_makeFeatureParts: function(feat, pxPerExtent) {
		var rings = feat.geometry;
		var coord;

		this._parts = [];
		for (var i = 0; i < rings.length; i++) {
			var ring = rings[i];
			var part = [];
			for (var j = 0; j < ring.length; j++) {
				coord = ring[j];
				// Protobuf vector tiles return {x: , y:}
				// Geojson-vt returns [,]
				part.push(L.point(coord).scaleBy(pxPerExtent));
			}
			this._parts.push(part);
		}
	},

	makeInteractive: function() {
		this._pxBounds = this._getPixelBounds();
	}
};