参数椭圆方程

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → O
2. Intersect(d, xAxis) → A'_2, A_2
3. Rotate(A_2, α, O) → A'
4. Angle(A_2, O, A') → φ
5. Ray(O, A') → e
6. Intersect(c, e) → B',
7. OrthogonalLine(A', xAxis) → f
8. OrthogonalLine(B', f) → g
9. Intersect(f, g) → E
10. Segment(A', E) → h
11. Segment(B', E) → i
12. If(j, 1, 0) → speed
13. Intersect(f, xAxis) → Γ
14. Intersect(g, yAxis) → Δ
15. Segment(O, Γ) → k
16. Segment(Δ, O) → l
17. Segment(A', Γ) → m
18. Segment(O, A') → n
19. Intersect(c, yAxis) → B'_1, B_2
20. Segment(B', Δ) → p
21. Angle(Δ, B', O) → γ