leaflet draw grid

gistfile1.js

	drawGrid function() {

		var xFact = 10,
			yFact = 6;
			
		var m = this.map,
			bb = m.getBounds(),
			xmin = m.latLngToLayerPoint( bb.getNorthWest() ).x,
			ymin = m.latLngToLayerPoint( bb.getNorthWest() ).y,
			xmax = m.latLngToLayerPoint( bb.getSouthEast() ).x,
			ymax = m.latLngToLayerPoint( bb.getSouthEast() ).y,
			//converte da coordinate a pixel
			xinc = Math.round((xmax-xmin) / xFact),
			yinc = Math.round((ymax-ymin) / yFact),
			x,y, p1,p2, line;
		
		this._grid.clearLayers();
		
		for(x = xmin; x<= xmax; x+= xinc)
		{
			p1 = m.layerPointToLatLng( new L.Point(x, ymin) ),
			p2 = m.layerPointToLatLng( new L.Point(x, ymax) ),
			line = new L.Polyline([p1, p2], {color: "#6f6",color: 'green', weight:1 });
			this._grid.addLayer(line);
		}
		for(y = ymin; y<= ymax; y+= yinc)
		{
			p1 = m.layerPointToLatLng( new L.Point(xmin, y) ),
			p2 = m.layerPointToLatLng( new L.Point(xmax, y) ),
			line = new L.Polyline([p1, p2], {color: "#6f6",color: 'green', weight:1 });
			this._grid.addLayer(line);
		}
	}