tijdbalk

a = 1.1 (slider from 0 to 2, step 0.01)
b = 1 (slider from 0 to 2, step 0.01)
T = 1 (slider from -5 to 5, step 0.1)
t = 1.1300000000000001 (slider from 0 to 5, step 0.01)
Planeet: ((a * cos(((2 * 3.141592653589793 / T) * t))), (b * sin(((2 * 3.141592653589793 / T) * t))))
Zon: ((-sqrt(a^(2) - b^(2))), 0)
B_2: (sqrt(a^(2) - b^(2)), 0)
voerstraal = Segment(Zon, Planeet)
c: x^(2) / a^(2) + y^(2) / b^(2) = 1
A, B = Intersect(c, xAxis)
C, D = Intersect(c, yAxis)
Middelpunt = Intersect(xAxis, yAxis)
d = Segment(Middelpunt, B)
e = Segment(Middelpunt, C)