问题
I would like to initialize cesium so that the map is centered on some specific coordinates instead of the default ones. I have the following initialization code:
var map = new Cesium.CesiumWidget('map-js');
map.centralBody.terrainProvider = new Cesium.CesiumTerrainProvider({
url : 'http://cesiumjs.org/smallterrain'
});
Usually, with other mapping libraries, I would set the center on initialization, eg on mapbox:
map = L.mapbox.map('map-js', 'api-key').setView([42.12, 12.45], 9);
How to do that with cesium?
回答1:
Try adding this after your first block of code above:
var scene = map.scene;
var ellipsoid = Cesium.Ellipsoid.WGS84;
var west = Cesium.Math.toRadians(-77.0);
var south = Cesium.Math.toRadians(38.0);
var east = Cesium.Math.toRadians(-72.0);
var north = Cesium.Math.toRadians(42.0);
var extent = new Cesium.Rectangle(west, south, east, north);
scene.camera.viewRectangle(extent, ellipsoid);
More examples are available in our Camera Demo.
EDIT (May 2014): Due to Cesium API changes, .getCamera()
is renamed .camera
, the camera's .controller
was removed and rolled into the camera itself, and Extent
is renamed to Rectangle
. The above code now reflects the new API. For a complete list of breaking changes, see CHANGES.md.
回答2:
If you want to keep the current "zoom" (aka camera distance from ellipsoid) and only have lon/lat, you could call setView() and use the current camera height, like:
viewer.camera.setView({
destination : Cesium.Cartesian3.fromDegrees(
longitude,
latitude,
Cesium.Ellipsoid.WGS84.cartesianToCartographic(viewer.camera.position).height
)
});
来源:https://stackoverflow.com/questions/21650127/how-to-set-cesium-js-map-center-coordinates-latitude-longitude