Plotting functions on splines should be evaluated with physical coordinates. #483
Description
Current Behavior
When plotting functions on splines, evaluation is currently performed at the parametric coordinates of the spline. This can be unintuitive and potentially confusing. However I see a use-case (see the isophotes example).
Proposed Change
Make the current behavior optional, with evaluation in physical space as the default.
This would make plotting functions - especially on Multipatches - more intuitive and user-friendly.
❓ Curious to hear your thoughts on this — especially regarding potential performance implications or cases where parametric evaluation is preferred.