e = 0.8 (slider from 0 to 1, step 0.0010)
γ = 4 (slider from 0 to 4, step 0.1)
E_1: (-(γ), 0.0)
E_2: (γ, 0.0)
a: γ / e
b: sqrt(a^(2.0) - γ^(2.0))
c: x^(2.0) / a^(2.0) + y^(2.0) / b^(2.0) = 1.0