Radial Gradient

Draws a series of concentric circles to create a gradient from one color to another.

from p5 import *

dim = None

def setup():
        size(640, 360)

        global dim
        dim = width/2;
        background(0)
        color_mode('HSB', 360, 100, 100)
        no_stroke()

def draw():
        global dim
        background(0)

        x = 0
        while x <= width:
                drawGradient(x, height/2)
                x += dim

def drawGradient(x, y):
        radius = dim/2
        h = random_uniform(0, 360)

        for r in range(int(radius), 0, -1):
                fill(h, 90, 90)
                ellipse((x, y), r*2, r*2)
                h = (h + 1) % 360

if __name__ == '__main__':
  run(frame_rate=1)