Quantify Curvature Comb (local magnitude and direction of curvature)

matthew_stacy

Is it currently possible to quantify the magnitude and direction of curvature from the curvature comb?  Onshape displays the minimum radius (reciprocal of maximum curvature), but what about other locations along the curve?

https://cad.onshape.com/documents/6c266cb2de72a5f94d754a53/w/a55642e15b75de7d2d916b08/e/24e7d9dae7320c4352ba4ef2

EvanReese

I don't think it's possible with built-in tools, but I'd use it if it was. I have already been looking at what's available in featurescript for curvature evaluation, so this was fresh enough on my mind to write this rudamentary script that can do it: https://cad.onshape.com/documents/08081f0d1d945086a5efbe77/v/b6d1515aaa3220416d67f7b0/e/e847ec56d76d18b3af815cd7

it only accepts one curve at a time, and to find the approximate point you want it kind of a guess-and-check process right now.

I'm out of time for now, but it could be taken much farther:

1. output rounded numbers and sensible units
2. include surfaces
3. be able to select a sketch point instead of putting numbers in for the point position
4. be able to iterate through a whole bunch of points and find the approximate min and max locations