Best way to duplicate a spline with an offset

[Kapistijn]

Thank you for the response.

Unfortunately defining the space doesn't seem to affect the outcome.
I really feel like I'm missing something here. Any idea's?

Thank you so much in advance!

Code:

private Vector3 CalculateOffset(CurvySplineSegment originalSplineSegment)
        {
            if (originalSplineSegment == null)
                return Vector3.zero;

            Vector3 tangent = m_CurvySpline.GetTangent(originalSplineSegment.TF, Space.Self);
            Vector3 worldTangent = m_CurvySpline.GetTangent(originalSplineSegment.TF, Space.World);
            Vector3 perpendicularTangent = Vector3.Cross(worldTangent, originalSplineSegment.transform.up);

            Vector3 offset = perpendicularTangent * m_Offset;

            Debug.DrawLine(originalSplineSegment.transform.position, originalSplineSegment.transform.position + (tangent * m_Offset * 2.0f), Color.yellow, 10.0f);
            Debug.DrawLine(originalSplineSegment.transform.position, originalSplineSegment.transform.position + (worldTangent * m_Offset), Color.orange, 10.0f);
            Debug.DrawLine(originalSplineSegment.transform.position, originalSplineSegment.transform.position + (perpendicularTangent * m_Offset), Color.red, 10.0f);

            return offset;
        }