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/*
* Maps for FMZ using Zurich council's WMTS tile server
*/
/*
* Copied from Mark/Matthew's demo of using Zurich's layers
* and merged with things that js/map-OpenLayers.js does
*/
function init_zurich_map(after) {
fixmystreet.map = new OpenLayers.Map('map', {
projection: new OpenLayers.Projection("EPSG:21781"),
displayProjection: new OpenLayers.Projection("EPSG:21781"),
maxExtent: new OpenLayers.Bounds(676000,241000,690000,255000),
//projection: new OpenLayers.Projection("EPSG:4326"),
//displayProjection: new OpenLayers.Projection("EPSG:4326"),
//maxExtent: new OpenLayers.Bounds(8.444933818976226,47.31509040172551,8.632922236617937,47.442777990747416),
units: 'm',
scales: [ '250000', '125000', '64000', '32000', '16000', '8000', '4000', '2000', '1000', '500'],
controls: fixmystreet.controls
});
var format = new OpenLayers.Format.WMTSCapabilities();
jQuery.support.cors = true;
jQuery.get("cobrands/zurich/Zurich-WMTSCapabilities.xml",
'',
function (data, textStatus, jqXHR) {
var layer, centre;
var capabilities = format.read(data);
layer = format.createLayer(capabilities, {
// Mark/Matthew's
layer: "Luftbild",
matrixSet: "default028mm",
//matrixSet: "nativeTileMatrixSet",
requestEncoding: "REST",
isBaseLayer: true,
// Things from the original map-OpenLayers.js
zoomOffset: fixmystreet.zoomOffset,
transitionEffect: 'resize',
numZoomLevels: fixmystreet.numZoomLevels
});
// For some reason with OpenLayers 2.11 the format
// returns a KVP url not a REST one, despite the settings
// we have above, so for now I'm hardcoding the right one
//layer.url = layer.url.replace('arcgis/rest/services/', '');
layer.url = "http://www.wmts.stadt-zuerich.ch/Luftbild/MapServer/WMTS/tile/";
fixmystreet.map.addLayer(layer);
centre = new OpenLayers.LonLat( fixmystreet.longitude, fixmystreet.latitude );
centre.transform(
new OpenLayers.Projection("EPSG:4326"),
fixmystreet.map.getProjectionObject()
);
fixmystreet.map.setCenter(centre, fixmystreet.zoom || 3);
// Call the after callback
after();
},
'xml');
}
// These next two functions come from the Swiss Federal Office of Topography
// http://www.swisstopo.admin.ch/internet/swisstopo/en/home/products/software/products/skripts.html
// Convert CH y/x to WGS lat
function chToWGSlat(y, x) {
// Converts militar to civil and to unit = 1000km
// Axiliary values (% Bern)
var y_aux = (y - 600000) / 1000000;
var x_aux = (x - 200000) / 1000000;
// Process lat
var lat = 16.9023892;
lat = lat + (3.238272 * x_aux);
lat = lat - (0.270978 * Math.pow(y_aux, 2));
lat = lat - (0.002528 * Math.pow(x_aux, 2));
lat = lat - (0.0447 * Math.pow(y_aux, 2) * x_aux);
lat = lat - (0.0140 * Math.pow(x_aux, 3));
// Unit 10000" to 1 " and converts seconds to degrees (dec)
lat = lat * 100 / 36;
return lat;
}
// Convert CH y/x to WGS long
function chToWGSlng(y, x) {
// Converts militar to civil and to unit = 1000km
// Axiliary values (% Bern)
var y_aux = (y - 600000) / 1000000;
var x_aux = (x - 200000) / 1000000;
// Process long
var lng = 2.6779094;
lng = lng + (4.728982 * y_aux);
lng = lng + (0.791484 * y_aux * x_aux);
lng = lng + (0.1306 * y_aux * Math.pow(x_aux, 2));
lng = lng - (0.0436 * Math.pow(y_aux, 3));
// Unit 10000" to 1 " and converts seconds to degrees (dec)
lng = lng * 100 / 36;
return lng;
}
// Function to convert a Swiss coordinate to a WGS84 coordinate.
function getOLLatLonFromSwiss(y, x) {
return new OpenLayers.LonLat(chToWGSlng(y, x), chToWGSlat(y, x));
}
/*
* set_map_config() is called on dom ready in map-OpenLayers.js
* to setup the way the map should operate.
*/
function set_map_config(perm) {
// This stuff is copied from js/map-bing-ol.js
var permalink_id;
if ($('#map_permalink').length) {
permalink_id = 'map_permalink';
}
var nav_opts = { zoomWheelEnabled: false };
if (fixmystreet.page == 'around' && $('html').hasClass('mobile')) {
nav_opts = {};
}
fixmystreet.nav_control = new OpenLayers.Control.Navigation(nav_opts);
fixmystreet.controls = [
new OpenLayers.Control.Attribution(),
new OpenLayers.Control.ArgParser(),
fixmystreet.nav_control,
new OpenLayers.Control.Permalink(permalink_id),
new OpenLayers.Control.PanZoomFMS({id: 'fms_pan_zoom' })
];
fixmystreet.map_type = OpenLayers.Layer.WMTS;
// Set DPI - default is 72
OpenLayers.DOTS_PER_INCH = 96;
// tell the main code to run our function instead
// of setting the map up itself
fixmystreet.map_setup = init_zurich_map;
// Give main code a new bbox_strategy that translates between
// lat/lon and our swiss coordinates
fixmystreet.bbox_strategy = new OpenLayers.Strategy.ZurichBBOX({ratio: 1});
}
OpenLayers.Strategy.ZurichBBOX = OpenLayers.Class(OpenLayers.Strategy.BBOX, {
getMapBounds: function() {
// Get the map bounds but return them in lat/lon, not
// Swiss coordinates
if (this.layer.map === null) {
return null;
}
var swissBounds = this.layer.map.getExtent();
var topLeft = getOLLatLonFromSwiss(swissBounds.left,swissBounds.top);
var bottomRight = getOLLatLonFromSwiss(swissBounds.right,swissBounds.bottom);
var bounds = new OpenLayers.Bounds();
bounds.extend(topLeft);
bounds.extend(bottomRight);
return bounds;
},
CLASS_NAME: "OpenLayers.Strategy.ZurichBBOX"
});
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