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"""
Wave Gradient
by Ira Greenberg.
Adapted to python by Jonathan Feinberg
Generate a gradient along a sin() wave.
"""
amplitude = 30
fillGap = 2.5
def setup():
size(200, 200)
background(200, 200, 200)
noLoop()
def draw():
frequency = 0
for i in range(-75, height + 75):
# Reset angle to 0, so waves stack properly
angle = 0
# Increasing frequency causes more gaps
frequency += .006
for j in range(width + 75):
py = i + sin(radians(angle)) * amplitude
angle += frequency
c = color(abs(py - i) * 255 / amplitude,
255 - abs(py - i) * 255 / amplitude,
j * (255.0 / (width + 50)))
# Hack to fill gaps. Raise value of fillGap if you increase frequency
for filler in range(fillGap):
set(int(j - filler), int(py) - filler, c)
set(int(j), int(py), c)
set(int(j + filler), int(py) + filler, c)
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