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I have a few dozen nodes spaced in a helix shape and an object trying its best to follow the path of the nodes. The nodes are like pylons/cones on the road, and the object is the car trying to navigate and follow them. The helix isnt perfect, so Im thinking to use a spline curve to fit the nodes. I need help determining the distance of the object to the curve. I have the XYZ co-ordinates of all nodes and the object at all times.

How do you suggest I fit the nodes and then how would I find the closest distance to the curve?

All help is appreciated. Thank you.

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# Distance between point and 3D spline

Can you offer guidance or do you also need help?

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