cesium獲取座標及高程

一、獲取entity座標及高程javascript

var cartographic = Cesium.Cartographic.fromCartesian(entity.position.getValue());
 var lon = Cesium.Math.toDegrees(cartographic.longitude);
 var lat = Cesium.Math.toDegrees(cartographic.latitude);
 var elev = viewer.scene.globe.getHeight(cartographic);

二、鼠標點選獲取座標及高程java

var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
handler.setInputAction(function (event) {
      var wp = event.position;
      if (!Cesium.defined(wp)) {
        return
      }
      var ray = viewer.scene.camera.getPickRay(wp);
      if (!Cesium.defined(ray)) {
        return
      }
      var cartesian = viewer.scene.globe.pick(ray, viewer.scene);
      if (!Cesium.defined(cartesian)) {
        return
      }
      if (cartesian) {
        var cartographic = Cesium.Cartographic.fromCartesian(cartesian);
        var lon = Cesium.Math.toDegrees(cartographic.longitude);
        var lat = Cesium.Math.toDegrees(cartographic.latitude);
        var elev = viewer.scene.globe.getHeight(cartographic);
        }
      }
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);

鼠標點選2(能夠選擇模型)

var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
var handler.setInputAction(function (event) {
  var wp = event.position;
  if (!Cesium.defined(wp)) {
    return
  }

  var cartesian=viewer.scene.pickPosition(wp);

  if(cartesian){
    var cartographic=ellipsoid.cartesianToCartographic(cartesian);
    //畫點
    var lon = Cesium.Math.toDegrees(cartographic.longitude);
    var lat = Cesium.Math.toDegrees(cartographic.latitude);
    var elev = cartographic.height;
    if(elev<0){
      var ray = viewer.scene.camera.getPickRay(wp);
      if (!Cesium.defined(ray)) {
        return
      }
      cartesian = viewer.scene.globe.pick(ray, viewer.scene);
      if (!Cesium.defined(cartesian)) {
        return
      }
      if(cartesian){
        cartographic=ellipsoid.cartesianToCartographic(cartesian);
        lon = Cesium.Math.toDegrees(cartographic.longitude);
        lat = Cesium.Math.toDegrees(cartographic.latitude);
        elev = cartographic.height;
      }
    }
}

三、根據座標獲取高程git

var carto=new Cesium.Cartographic.fromDegrees(lon,lat);　　//輸入經緯度
var h1=viewer.scene.globe.getHeight(carto);

四、根據座標獲取地表附着物高程canvas

var carto=new Cesium.Cartographic.fromDegrees(lon,lat)；　　//輸入經緯度
var h2=_this.viewer.scene.sampleHeight(carto);

五、根據座標獲取terrain高程，精度爲mpromise

var terrainData = new Cesium.CesiumTerrainProvider({
  url:this.server_url_outer+"terrain/"    //輸入terrian地形數據加載地址
});
var positions = [
  Cesium.Cartographic.fromDegrees(lon,lat)    //輸入經緯度
];
var promise = Cesium.sampleTerrain(terrainData,14,positions); //獲取14級地形高程
Cesium.when(promise, function (updatedPositions) {
  var terrainHeight = updatedPositions[0].height;
});

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轉載請註明出處：https://www.cnblogs.com/implementer/this