How to redraw F-Curve Spline by using keyFrames data from Animation Curve?

[AiMiDi]

For only x-axis, there are two points defined (0,0) with right tangent(14.49, 0) and (60,47.869) with left tangent(-39, -1.532), and It is clear that the value at frame 23 is 31.49
But After I use these information to try to recreate the curve with Bezier algorithm myself, I somehow get the value 26.379:

And I have tried Hermite algorithm, but it's still wrong 26.5:
Can you reveal your way of interpolation？

Thank，
AiMiD

[AiMiDi]

@ferdinand Could you please check this out? This is quite important for me! Appreciation for your time!

Thank，
AiMiD

[ferdinand]

Hello @AiMiDi,

we have seen this topic, and it has been assigned, but not to me. We will answer soon.

Thank you for your understanding,
Ferdinand

[i_mazlov]

Hi @AiMiDi ,

The problem you're pointing out to lies in the algorithmic field and relates to a non-public part of C4D, hence is Out of Scope for this forum:

We will neither reveal non-public functionalities of Cinema 4D's API, nor will we establish a direct line of communication with the developers of Cinema 4D.

Let me know if you have any further questions!

Cheers,
Ilia