This is a PI (π) Calculator that can estimate pi with varying accuracy. Please note that not all the digits that it outputs will be accurate. Increase the radius, and the accuracy will change (I haven't deducted yet whether it increases or decreases), however there is a limit. Decrease the Calculation Speed, and that will increase the accuracy without a limit (?). However, it will increase the amount of time it takes to calculate it. Increase the clamp, and it will reduce the calculation time, perhaps without decreasing the accuracy much, however, numbers that do not divide very evenly (tenths place max) into 360 will distort it a bit (See Clamp Value to see how it looks when divided into 360). For best results, do not change the values after pressing the green flag. Change them before, then click. Change "π*10^" to multiply the PI output by ten so that you can see more digits. Just remember that the decimal point is supposed to be before 3 when copying. Press C to set custom values for Radius, Clamp or Calculation Speed.
All code by me. I was experimenting around and fine tuning the code until I was satisfied with it and came up with this. The green circle is not fundamental to the calculation and is just a progress bar.