processsing 函数random

size(600, 600)
background(50)

stroke(200)
for i in range(5):
    line(random(width), random(height),
         random(width), random(height))

size(600, 600)
background(50)

def draw_me_a_line(colour=200):
    stroke(colour)
    line(random(width), random(height),
         random(width), random(height))

for i in range(5):
    draw_me_a_line()

size(600, 600)
background(50)

def draw_me_a_line(colour=200):
    stroke(colour)
    line(random(width), random(height),
         random(width), random(height))

for i in range(5):
    chance = random(100)
    if chance > 50:
        draw_me_a_line()
    else:
        draw_me_a_line(100)