Split up overviewer.js into several files

overviewer_core/data/js_src/overviewer.js

@@ -0,0 +1,93 @@
+/* Overviewer.js
+ *
+ * Must be the first file included from index.html
+ */
+
+
+var overviewer = {};
+
+
+/**
+ * This holds the map, probably the most important var in this file
+ */
+overviewer.map = null;
+overviewer.mapView = null;
+
+
+overviewer.collections = {
+        /**
+         * MapTypes that aren't overlays will end up in here.
+         */
+        'mapTypes':     {},
+        /**
+         * The mapType names are in here.
+         */
+        'mapTypeIds':   [],
+        /**
+         * This is the current infoWindow object, we keep track of it so that
+         * there is only one open at a time.
+         */
+        'infoWindow':   null,
+
+        'worldViews': []
+    };
+
+overviewer.classes = {
+        /**
+         * Our custom projection maps Latitude to Y, and Longitude to X as
+         * normal, but it maps the range [0.0, 1.0] to [0, tileSize] in both
+         * directions so it is easier to position markers, etc. based on their
+         * position (find their position in the lowest-zoom image, and divide
+         * by tileSize)
+         */
+        'MapProjection' : function() {
+            this.inverseTileSize = 1.0 / overviewerConfig.CONST.tileSize;
+        },
+        /**
+         * This is a mapType used only for debugging, to draw a grid on the screen
+         * showing the tile co-ordinates and tile path. Currently the tile path
+         * part does not work.
+         * 
+         * @param google.maps.Size tileSize
+         */
+        'CoordMapType': function(tileSize) {
+            this.tileSize = tileSize;
+        }
+
+};
+
+
+overviewer.gmap = {
+
+        /**
+         * Generate a function to get the path to a tile at a particular location
+         * and zoom level.
+         * 
+         * @param string path
+         * @param string pathBase
+         * @param string pathExt
+         */
+        'getTileUrlGenerator': function(path, pathBase, pathExt) {
+            return function(tile, zoom) {
+                var url = path;
+                var urlBase = ( pathBase ? pathBase : '' );
+                if(tile.x < 0 || tile.x >= Math.pow(2, zoom) ||
+                   tile.y < 0 || tile.y >= Math.pow(2, zoom)) {
+                    url += '/blank';
+                } else if(zoom == 0) {
+                    url += '/base';
+                } else {
+                    for(var z = zoom - 1; z >= 0; --z) {
+                        var x = Math.floor(tile.x / Math.pow(2, z)) % 2;
+                        var y = Math.floor(tile.y / Math.pow(2, z)) % 2;
+                        url += '/' + (x + 2 * y);
+                    }
+                }
+                url = url + '.' + pathExt;
+                if(typeof overviewerConfig.map.cacheTag !== 'undefined') {
+                    url += '?c=' + overviewerConfig.map.cacheTag;
+                }
+                return(urlBase + url);
+            }
+        }
+};