Sine wave interference patterns

korakot (Korakot Chaovavanich) — Fri, 16 Sep 2005 01:14:15 GMT

A nice visualization from Simon Wittber's recipe



from appuifw import *

import e32, random

from math import *



app.body = c = Canvas()

width, height =  c.size

freq = random.choice([25., 50., 100., 200., 400.])



for y in range(height):

    for x in range(width):

        z1 = sin(x/freq*1.7*pi)

        z2 = sin((x/3+y)/freq*1.5*pi)

        z3 = sin(y/freq*0.1*pi)



        z = abs(z1+z2+z3)*255

        c.point((x,y), (z,z/4,z*4))

c.text((5, height-12), u'Freq = %d' %freq, 0xffffff)



e32.ao_sleep(5)    # wait 5 sec then quit

See a screenshot here.

DZone Snippets: sine code

Sine wave interference patterns