This task is for a node with a feature-set corresponding to the the "Start and End Mapping" sub-panel for curve geometry.

Details

• This node differs from the existing feature in that it outputs a changed curve rather than only changing the evaluated positions.
• This raises some complexity in that it must interpolate control point values like handle positions, however, the node becomes much simpler conceptually in general.

Further Questions

• I wonder about use cases for the "Resolution" mode in the current feature. It would be easy to add but maybe there is no use case.

Implementation

• The node can use a generic "sampling" to get the factor or length mapped onto the curve.
• Then it can interpolate data to the neighboring evaluated points, and then interpolate between those two points with a factor returned from that lookup.