Shoebot experiment - perlin noise..

Fri 05 April 2013
By stu

Perlin noise is pretty cool, you can use it to generate realistic looking clouds or mountains.

Here's a bot for shoebot I made a while back that uses perlin noise to generate some nice circles.

You'll need shoebot and the lib "noise" installed into your environment for it to work;

# pip install noise

Then to run;

sbot -w perlin-circlescape1.bot

Here's a video of them in action -

See below the break for the code - 

import noise

size(1000,1000)
speed(60)

colormode(HSB)

def setup():
    global origx, origy
    origx = 0
    origy = 0    

rows = 8
cols = 9
gap = 100

def draw():
    global origx, origy, gap

    # black background
    background(0)

    # start from 100,100
    translate(100,100)
    # and draw the blocks
    mx = float(1.0 / WIDTH) * (-MOUSEX - (-WIDTH / 2))
    my = float(1.0 / HEIGHT) * (-MOUSEY - (-HEIGHT / 2))

    origx += (mx / 8.0)
    origy += (my / 8.0)
    for gx,gy in grid(rows,cols,1,1):
        # height of each block is determined by x,y coordinates
        n = (noise.pnoise2(float(origx + (gx / 10.0)), float(origy + (gy / 10.0)), 2) / cols)
        diam = 50 + (n * 600.0)
        s = (n * 10.0)
        fill(0.1, 1.0 - s, 1)
        x = gx * gap
        y = gy * gap
        oval(x - diam / 2, y - diam / 2, diam, diam)

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