I'm not sure where I should this, but it might related to some coding so I decided to ask in this forum
At this time, my superior is curious whether how can she calculate the distance from point A to point B of the viewer in Metres or Inches (or by some measurement unit). For example, the image below describe my question
I'm not sure whether there are any plugin that can help to calculate this or I need to write my own algorithms to solve this problem.
Thanks for the answer :)