Splines and modulation

My efforts to equally subdivide a curve along its length have, in part, been leading to this. First, I extended the sampling to work with splines (made up of cubic Bézier curves with c1 continuity). This shot shows 4 curves put together to form a spline:
spline
Next, I wrote some code to modulate a curve onto another curve. Here’s a curve, and the same curve with another curve modulated onto it.

plain modulated

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