String Art

from drawing import *
from math import sin, cos, pi

# Set up a list of points around a circle.

size = 600              # width & height of drawing in pixels
x_center = size // 2    # circle center and radius
y_center = size // 2
radius = size * 0.4

n_points = 37                          # number of points around the circle
n_skip = [18, 16, 12, 7]               # string art layers   
colors = ['blue', 'green', 'yellow', 'orange']

points = []
for i in range(n_points):
    angle = i * 2.0 * pi / n_points
    x = x_center + radius * cos(angle)
    y = y_center + radius * sin(angle)
    points = points + [Point(x,y)]

art = Drawing(size, size)

# Create line segments connecting the points
# with a different skip number and color for each layer
for layer in range(len(colors)):
    i = 0
    for iteration in range(n_points):
        j = (i + n_skip[layer]) % n_points        # j is next point past i
        art.add( Line(points[i],                  # add a line from point i to point j
                      points[j], 
                      color=colors[layer],
                      line_width=1
                     ) 
               )
        i = j                                     # forward to the next point

art.render()

art.display()