首先,Cesium 中的坐标可分为两种情况:二维和三维,三维又有地形和模型之分: 1.二维坐标,获取椭球体表面的经纬度坐标: var handler = new Cesium.ScreenSpaceEventHandler(scene.canvas); handler.setInputAction(function(evt) { var cartesian=viewer.camera.pickEllipsoid(evt.position,viewer.scene.globe.ellipsoid)
获取地球上两经纬度坐标点间的距离,利用[大圆距离公式] A diagram illustrating great-circle distance (drawn in red) between two points on a sphere, P and Q. Two antipodal points, u and v, are also depicted. 谷歌都在用呢, C#实现的代码如下: /// <summary> /// 地球半径 /// </summary> priva