koobas.hobune.stream
Trying to make a tape measure?
So I am trying to make a polar coordinates learning application, imagine this:
And i want the user to be able to grab the origin point O and be able to "pull it out" like a tape measure along EXCLUSIVELY the x axis, (if that makes sense). Just imagine this (sorry i'm bad with photoshop): 
so that when the user lets go of the point the origin will snap back just like a tape measure would if you let go of it. I already have some snap drop zones along the x axis that the "tape measure" will snap to if the user places the origin there. So I only want it to snap back to place if the user places the origin any where other than those zones. Any help is appreciated. I am very new to this. Thanks in advance.
