Are latitude and longitude geocentric or geodetic?

Anne_Flaherty · February 4, 2020, 6:58pm

If I have a Cesium.Cartographic value are the lat/long coordinates geodetic or geocentric? Does Cesium have built in conversion functions?

omar · February 5, 2020, 2:45pm

I believe Cesium using geodetic longitude/latitude, based on this thread: https://groups.google.com/d/msg/cesium-dev/nrxWrVD9M1o/3ngUsrZcAQAJ

And from looking at various places in the source code, like this one:

github.com

CesiumGS/cesium/blob/bc8b44ebcece9d2c0302826a060ce0765eb66214/Source/WorkersES6/createVerticesFromGoogleEarthEnterpriseBuffer.js#L107-L109


if (includeWebMercatorT) {
    southMercatorY = WebMercatorProjection.geodeticLatitudeToMercatorAngle(geographicSouth);
    oneOverMercatorHeight = 1.0 / (WebMercatorProjection.geodeticLatitudeToMercatorAngle(geographicNorth) - southMercatorY);