If you can think of what the term may be so that I can google for this myself that would be perfect. Lets say I have a collection (array) of x,y points, doesn't really matter what they are, heres the most basic example:
Heres my question. say I plot a line from 5,5 to -5,-5: I would like to know which other points are within a distance of x. If x = 3, 0,1 would be returned but 10,10 is obviously not within a distance of 3.
Again sorry for this, I dont need someone to teach me, just looking for the term so that I can do that on my own
Also, would the term be the same for a 3d plane? x,y and z?