Sky atmosphere fix to not use camera height when intersecting the ellipsoid
Sky atmosphere fix to not use camera height when intersecting the ellipsoid

CesiumGS/cesium,AnalyticalGraphicsInc/cesium,likangning93/cesium,progsung/cesium,CesiumGS/cesium,likangning93/cesium,likangning93/cesium,CesiumGS/cesium,likangning93/cesium,likangning93/cesium,CesiumGS/cesium,AnalyticalGraphicsInc/cesium,CesiumGS/cesium,progsung/cesium