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