Pie Chart

Uses the arc() function to generate a pie chart from the data stored in an array.

from p5 import *

angles = [30, 10, 45, 35, 60, 38, 75, 67]

def setup():
        # Sets the screen to be 720 pixels wide and 400 pixels high
        size(720, 400)
        no_loop()
        no_stroke()

def draw():
        background(100)
        pie_chart(300, angles)

def pie_chart(diameter, data):
        lastAngle = 0
        for i in range(len(data)):
                gray = remap(i, [0, len(data)], [0, 255])
                fill(gray)
                arc(
                        (width / 2, height / 2),
                        diameter,
                        diameter,
                        lastAngle,
                        lastAngle + radians(angles[i])
                )

                lastAngle += radians(angles[i])

if __name__ == '__main__':
        run()