Through official examples, I can know whether a point(Cartesian2) is inside the 3dtiles model. However,i want to know whether a point(longitude,latitude,height) is inside the 3dtiles model.
If the point longitude, latitude, and height are known, you could get the bounding sphere of the 3D Tileset and check if the point is within the bounds of that sphere.
This sphere + point intersection test could be helpful: https://math.stackexchange.com/a/3118250