Given the "Red" arrow as the vector of interest in the image below, is there a standard (or practical) name for the "Blue" vector?
This is for the purpose of naming variables/methods related to the Blue vector. Conceptually I am thinking of it as the polar-shadow of the Red vector, but naming my variable "VectorShadow" will likely be ambiguous for the next programmer looking at my code.
For context the code is simply converting 3D Cartesian Coordinates to/from Spherical Coordinates.
