you can also do this using a (smooth) 2D or 3D spline function.
specify a couple if points, to define the path that an object
(or camera) shoeld follow, and use 2 or 3 points realy close
together at the start end end of the spline, so it starts/stops
at near-zero speed.
you can also yse a linear spline, if you realy want exactly trait
corners.
i'll try to find some old code of mine.

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