Today it's about Maths, and well my brain crash down when it's about Maths.
Here's the problem:
I've a first number whose value is determined by the X position of the mouse. (We call it a)
I've a second number who is always even. (We'll call b)
a and b are integer.
How to round up or down a to the nearest multiple of b?
If someone wanna help me, or teach me!