Plot Any Three-Dimensional (3D) Angle

Basic function for plotting and labeling any kind of three-dimensional angle (circumference arc) in Matlab.

I developed this function while working on my Master Thesis in Space and Astronautical Engineering because I needed to produce several three-dimensional Matlab figures with highlighted and labeled angular quantities (for instance, the thumbnail figure features many angles plotted with this function) and I could not find any similar function in the Matlab File Exchange.

Since then, I have used this function extensively, refining it from time to time. Personally I find it very useful and time-saving.

I think it may come in handy to those who rely on Matlab figures also for crisp and neat physical and geometrical three-dimensional illustrations.

Have fun with it and please inform me of any inconsistency.