openseadragon-wmts

OpenSeadragonWMTS

Adds support for displaying geo-referenced WMTS tile maps in OpenSeadragon.

See online demo.

Install

Download the latest release or grab directly from the CDN. Import into your page:

<script src="https://cdn.jsdelivr.net/npm/openseadragon-wmts@latest/dist/openseadragon-wmts.umd.cjs"></script>

Or install via npm:

$ npm install openseadragon-wmts

Use

var viewer = OpenSeadragon({
  id: "openseadragon",
  prefixUrl: "https://cdn.jsdelivr.net/npm/openseadragon@2.4/build/openseadragon/images/"
});

// Initialize the plugin
var map = await OpenSeadragonWMTS(viewer, {
  url: 'http://maps.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml'
});

// The map object provides functions to convert OSD coordinates to WGS84
var mouseTracker = new OpenSeadragon.MouseTracker({
  element: viewer.container,

  moveHandler: function(event) {
    var viewportPoint = viewer.viewport.pointFromPixel(event.position);

    var lonlat = map.viewportToLonLat(viewportPoint);
    console.log(lonlat);
 }

});

mouseTracker.setTracking(true);

Per default, the plugin displays the first available map layer with the default style. To select a specific layer and style:

var map = await OpenSeadragon.WMTS(viewer, {
  url: 'http://maps.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml',
  layer: 'Orthofoto 2020',
  style: 'farbe'
});

API

Method	Type
imageToLonLat	[x, y]	Image X/Y to lon/lat
lonLatToImageCoordinates	[lon, lat]	lon/lat to image X/Y
lonLatToMapCoordinates	[lon, lat]	lon/lat to map projection
lonLatToViewportCoordinates	[lon, lat]	lon/lat to OSD viewport X/Y
mapToLonLat	[east, north]	Map projection to lon/lat
mapToViewportCoordinates	[east, north]	Map projection to OSD viewport X/Y
viewportToLonLat	[x, y]	OSD viewport X/Y to lon/lat
viewportToMapCoordinates	[x, y]	OSD viewport X/Y to map projection