I know how Spline works for two points, but how can we create a smooth line of
spheres passing through n points? I am looking for something like line smoothing
in graphs/charts.

I assume we have to create n-1 Splines, but how do we calculate the control
points to have a smooth curvature over points?

In the tutorial on Bezier patches, there is an explanation for aligning the
control points for Bezier surfaces, but I am not sure if we need to apply the
same approach here.

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