60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
goog.require('ol.DeviceOrientation');
|
|
goog.require('ol.Map');
|
|
goog.require('ol.View');
|
|
goog.require('ol.control');
|
|
goog.require('ol.layer.Tile');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.source.OSM');
|
|
|
|
var projection = ol.proj.get('EPSG:3857');
|
|
var view = new ol.View({
|
|
center: [0, 0],
|
|
projection: projection,
|
|
extent: projection.getExtent(),
|
|
zoom: 2
|
|
});
|
|
var map = new ol.Map({
|
|
layers: [
|
|
new ol.layer.Tile({
|
|
source: new ol.source.OSM()
|
|
})
|
|
],
|
|
target: 'map',
|
|
controls: ol.control.defaults({
|
|
attributionOptions: /** @type {olx.control.AttributionOptions} */ ({
|
|
collapsible: false
|
|
})
|
|
}),
|
|
view: view
|
|
});
|
|
|
|
var deviceOrientation = new ol.DeviceOrientation();
|
|
|
|
function el(id) {
|
|
return document.getElementById(id);
|
|
}
|
|
|
|
el('track').addEventListener('change', function() {
|
|
deviceOrientation.setTracking(this.checked);
|
|
});
|
|
|
|
deviceOrientation.on('change', function() {
|
|
el('alpha').innerText = deviceOrientation.getAlpha() + ' [rad]';
|
|
el('beta').innerText = deviceOrientation.getBeta() + ' [rad]';
|
|
el('gamma').innerText = deviceOrientation.getGamma() + ' [rad]';
|
|
el('heading').innerText = deviceOrientation.getHeading() + ' [rad]';
|
|
});
|
|
|
|
// tilt the map
|
|
deviceOrientation.on(['change:beta', 'change:gamma'], function(event) {
|
|
var center = view.getCenter();
|
|
var resolution = view.getResolution();
|
|
var beta = event.target.getBeta() || 0;
|
|
var gamma = event.target.getGamma() || 0;
|
|
|
|
center[0] -= resolution * gamma * 25;
|
|
center[1] += resolution * beta * 25;
|
|
|
|
view.setCenter(view.constrainCenter(center));
|
|
});
|