Calculating angle in degrees of mouse movement?

Question

I want to calculate the angle of a mouse movement in degrees. I know you don't have to move the mouse in a straight line, I was just trying to calculate it based on starting and end points to create a nice right angle. Ideally the start and stop points would be determined by a click.

Answer 1

Pseudocode:

OnBeginClick: Store the mouse position

OnEndClick:

deltaX is currentMouseX - storedMouseX

deltaY is currentMoustY - storedMouseY

deltaY divided by deltaX = someValue (it's actually tangent(angle), we're about to calculate the angle)

arctangent(someValue) = angle