pixels = W:1024 H:1024

x = from (5) to 45 W
y = from (5) to 45 H

x = if(x > 25, 50 - x, x)
y = if(y > 25, 50 - y, y)

a = sin(x)/x
b = sin(y)/y
c = sin(x*y)/x/y

h = abs(a + b + c)*3
i = abs(a + b - c)*3
j = abs(a - b + c)*3
k = abs(a - b - c)*3

r = h + i
g = i + j
b = j + k
