https://www.tifviking.no/wp-content/plugins/wp-gpx-maps/ThirdParties/Leaflet.Photo/Leaflet.Photo.js?ver=7.1.2

1L.Photo = L.FeatureGroup.extend({
2	options: {
3		icon: {						
4			iconSize: [40, 40]
5		}
6	},
7
8	initialize: function (photos, options) {
9		L.setOptions(this, options);
10		L.FeatureGroup.prototype.initialize.call(this, photos);
11	},
12
13	addLayers: function (photos) {
14		if (photos) {
15			for (var i = 0, len = photos.length; i < len; i++) {
16				this.addLayer(photos[i]);
17			}
18		}
19		return this;
20	},
21
22	addLayer: function (photo) {	
23		L.FeatureGroup.prototype.addLayer.call(this, this.createMarker(photo));
24	},
25
26	createMarker: function (photo) {
27		var marker = L.marker(photo, {
28			icon: L.divIcon(L.extend({
29				html: '<div style="background-image: url(' + photo.thumbnail + ');"></div>​',
30				className: 'leaflet-marker-photo'
31			}, photo, this.options.icon)),
32			title: photo.caption || ''
33		});		
34		marker.photo = photo;
35		return marker;
36	}
37});
38
39L.photo = function (photos, options) {
40	return new L.Photo(photos, options);
41};
42
43if (L.MarkerClusterGroup) {
44
45	L.Photo.Cluster = L.MarkerClusterGroup.extend({
46		options: {
47			featureGroup: L.photo,		
48			maxClusterRadius: 100,		
49			showCoverageOnHover: false,
50			iconCreateFunction: function(cluster) {
51				return new L.DivIcon(L.extend({
52					className: 'leaflet-marker-photo', 
53					html: '<div style="background-image: url(' + cluster.getAllChildMarkers()[0].photo.thumbnail + ');"></div>​<b>' + cluster.getChildCount() + '</b>'
54				}, this.icon));
55		   	},	
56			icon: {						
57				iconSize: [40, 40]
58			}		   		
59		},
60
61		initialize: function (options) {	
62			options = L.Util.setOptions(this, options);
63			L.MarkerClusterGroup.prototype.initialize.call(this);
64			this._photos = options.featureGroup(null, options);
65		},
66
67		add: function (photos) {
68			this.addLayer(this._photos.addLayers(photos));
69			return this;
70		},
71
72		clear: function () {
73			this._photos.clearLayers();
74			this.clearLayers();
75		}
76
77	});
78
79	L.photo.cluster = function (options) {
80		return new L.Photo.Cluster(options);	
81	};
82
83}