Compose Tangent
Tangents always occur in pairs on splines. One tangent controls the course of the curve before and one controls the course behind the respective spline point. This Node helps to compose such a tangent pair (a Tuple) from two vectors. Note that tangents are evaluated only for Bezier splines.
On the left is the standard interpolation of a Bezier curve of three points. The two images to the right use the assignment of manual tangents to the center spline point (point number 1) and no tangents for the end points of the curve.
This setup creates a spline of three points where the middle point is assigned individual tangents (see lower branch of the setup). The start and end points are not given tangents, so they remain hard interpolated.