proj4.defs("EPSG:3067", "+proj=utm +zone=35 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs");
var extent = [-3670733.46, 4601971.85, 642319.78, 9362767.00];
ol.proj.get('EPSG:3067').setExtent(extent);
var layers = [
    new ol.layer.Tile({
        source: new ol.source.XYZ({
            url: 'http://geoserver.hel.fi/mapproxy/wmts/osm-sm/etrs_tm35fin/{z}/{x}/{y}.png',
            extent: extent,
        })
    })
];

var view = new ol.View({
    center: ol.proj.transform([24.9993393, 60.184716], 'EPSG:4326', 'EPSG:3067'), //Turun linna
    zoom: 10,
    projection: 'EPSG:3067'
});

var map = new ol.Map({
    interactions: ol.interaction.defaults().extend([new app.Drag()]),
    layers: layers,
    target: 'map',
    projection: 'EPSG:3067',
    view: view
});