HUMOR TREE MATHEMATICS > a spiral
The formula used for this spiral is:
left(t) = t * cos(t) + xcenter
top(t) = t * sin(t) + ycenter
Left is the number of pixels from the left of the screen and top is the number of pixels from the top of the screen. The range of t is [0,24π]. the step of t is 0.15.
I got this formula from Vanderbilt.edu.
The behavior of this function is inexplicable. I don't know why it accelerates and decelerates, but it does.