How to calculate the vertical distance and horizontal distance between two points

CesiumJS
1

The horizontal and vertical distances that I draw on the cesium are weird, the same for X and Y, and the two points for different Z values ​​are not on a vertical line, I don't know how to set parameter,thank you!

2

Are you maybe mixing Cartesian3 and Cartographic coordinates?

3

For reference, Cartesian3 objects are (x, y, z) coordinates in world space. Cartographic objects are (lat, long, height) coordinates. You can convert between them, see the linked documentation.

Thanks,

Gabby