check-in bower_components

bower_components/leaflet-plugins/layer/vector/GPX.Speed.js

@@ -0,0 +1,80 @@
+//#include "GPX.js"
+
+(function() {
+
+function d2h(d) {
+	var hex = '0123456789ABCDEF';
+	var r = '';
+	d = Math.floor(d);
+	while (d != 0) {
+		r = hex[d % 16] + r;
+		d = Math.floor(d / 16);
+	}
+	while (r.length < 2) r = '0' + r;
+	return r;
+}
+
+function gradient(color) {
+	// First arc (0, PI) in HSV colorspace
+	function f2h(d) { return d2h(256 * d); }
+	if (color < 0)
+		return "#FF0000";
+	else if (color < 1.0/3)
+		return "#FF" + f2h(3 * color) + "00";
+	else if (color < 2.0/3)
+		return "#" + f2h(2 - 3 * color) + "FF00";
+	else if (color < 1)
+		return "#00FF" + f2h(3 * color - 2);
+	else
+		return "#00FFFF";
+};
+
+function gpx2time(s) {
+	// 2011-09-24T12:07:53Z
+	if (s.length != 10 + 1 + 8 + 1)
+		return new Date();
+	return new Date(s);
+};
+
+L.GPX.include({
+	options: {
+		maxSpeed: 110,
+		chunks: 200
+	},
+
+	speedSplitEnable: function(options) {
+		L.Util.setOptions(this, options);
+		return this.on('addline', this.speed_split, this);
+	},
+
+	speedSplitDisable: function() {
+		return this.off('addline', this.speed_split, this);
+	},
+
+	speed_split: function(e) {
+		var l = e.line.pop(), ll = l.getLatLngs();
+		var chunk = Math.floor(ll.length / this.options.chunks);
+		if (chunk < 3) chunk = 3;
+		var p = null;
+		for (var i = 0; i < ll.length; i += chunk) {
+			var d = 0, t = null;
+			if (i + chunk > ll.length)
+				chunk = ll.length - i;
+			for (var j = 0; j < chunk; j++) {
+				if (p) d += p.distanceTo(ll[i+j]);
+				p = ll[i + j];
+				if (!t) t = gpx2time(p.meta.time);
+			}
+			p = ll[i + chunk - 1];
+			t = (gpx2time(p.meta.time) - t) / (3600 * 1000);
+			var speed = 0.001 * d / t;
+			//console.info('Dist: ' + d + "; Speed: " + speed);
+			var color = gradient(speed / this.options.maxSpeed);
+			var l = new L.Polyline(ll.slice(i, i+chunk+1), {color: color, weight: 2, opacity: 1});
+			l.bindPopup('Dist: ' + d.toFixed() + "m; Speed: " + speed.toFixed(2) + " km/h");
+			e.line.push(l);
+		}
+	}
+
+});
+})();