Tangent incorrect.

[_Aka_]

Hi

The issue you are highlighting does exist, it's not you misconfiguring/misusing the spline.
The issues comes from the fact that Spline.GetTangent does not calculate the real tangent using a mathematical formula for each spline type, but does a delta between two positions which are really close. That gives this unwanted behavior at the CPs.

A solution is to go to the following method in CurvySplineSegment

Code:

public Vector3 GetTangent(float localF, Vector3 position, Space space = Space.Self)

and add the following after its code contract

Code:

if (Spline.Interpolation == CurvyInterpolation.Bezier)
                return CurvySpline.BezierTangent(threadSafeLocalPosition.Addition(HandleOut),
                    threadSafeLocalPosition,
                    threadSafeNextCpLocalPosition,
                    threadSafeNextCpLocalPosition.Addition(cachedNextControlPoint.HandleIn),
                    localF).normalized;

I don't like this solution because it is not consistent, it fixes the problem for a type of splines, but not for all of them. Also, it might have side effects I am not thinking of right now.

A solution I prefer is to use the CP's handles, to get exactly the values of the handles (that define the tangents). Those are correct.

Sorry about this issue.