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// Functionality required by all OpenLayers WMTS base maps
fixmystreet.maps.setup_wmts_base_map = function() {
fixmystreet.map_type = OpenLayers.Layer.WMTS;
// Set DPI - default is 72
OpenLayers.DOTS_PER_INCH = fixmystreet.wmts_config.tile_dpi;
fixmystreet.map_options = {
maxExtent: this.layer_bounds,
units: 'm',
scales: fixmystreet.wmts_config.scales
};
fixmystreet.layer_options = [];
$.each(fixmystreet.wmts_config.layer_names, function(i, v) {
fixmystreet.layer_options.push({
projection: new OpenLayers.Projection(fixmystreet.wmts_config.map_projection),
name: v,
layer: v,
formatSuffix: fixmystreet.wmts_config.tile_suffix.replace(".", ""),
matrixSet: fixmystreet.wmts_config.matrix_set,
requestEncoding: "REST",
url: fixmystreet.wmts_config.tile_urls[i],
style: fixmystreet.wmts_config.layer_style,
matrixIds: fixmystreet.maps.matrix_ids,
scales: fixmystreet.wmts_config.scales,
tileOrigin: new OpenLayers.LonLat(fixmystreet.wmts_config.origin_x, fixmystreet.wmts_config.origin_y)
});
});
// Give main code a new bbox_strategy that translates between
// lat/lon and our WMTS layer's coordinates
fixmystreet.bbox_strategy = new OpenLayers.Strategy.ReprojectBBOX({
ratio: 1
});
};
OpenLayers.Strategy.ReprojectBBOX = OpenLayers.Class(OpenLayers.Strategy.BBOX, {
getMapBounds: function() {
// Get the map bounds but return them in lat/lon, not
// local coordinates
if (this.layer.map === null) {
return null;
}
var localBounds = this.layer.map.getExtent();
// Transform bound corners into WGS84
localBounds.transform( new OpenLayers.Projection(fixmystreet.wmts_config.map_projection), new OpenLayers.Projection("EPSG:4326") );
return localBounds;
},
CLASS_NAME: "OpenLayers.Strategy.ReprojectBBOX"
});
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