LP cohérence_spatiale

a = 1 (slider from -5 to 5)
b = 1.3 (slider from -5 to 5)
d = 5 (slider from -5 to 5)
f(x) = 1 + (cos((((2 * (π * a)) * b)) / ((2 * d))) * cos(((2 * (π * a)) * x)))
A = Intersect(f, yAxis, (0, 1.6845471059286887))
g = Line(A, xAxis)
B = Point(f)
h = Line(B, g)