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I am looking for info (explanation) of two (not necesarily related) algorithms, the Fast Fourier Transform, and the spline (or whatever you call it if you want to generate a smooth curve through a couple of known coordinates, be it 2D or 3D). The problem is, though, that I am no maths magician, so I would very much appreciate a step-by-step explanation, rather than some complex equation. I hope this is possible. Please let me know if you can help me with this.