#https://www.shadertoy.com/view/4dlyRj

pixels = W:1024 H:1024

x = from -2 to 2 W
y = from -2 to 2 H

spikes = 7
spikeLength = 1.0

#(length(uv-0.5)-0.25+spikeLength*sin(atan(uv.y-0.5,uv.x-0.5)*spikes)))


w = length2(x, y) + spikeLength*sin(atan2(y,x)*spikes)
k = w

r = k
g = k
b = k
	


