Curve Length Node #88725

{F10152979 size=full}	{F10152981 size=full}

This is task is for a node that calculates the lengths of splines.

Details

The main complexity is that each spline has its own length, and the curve may have multiple splines.
Therefore there are two output modes.
The first (and default) outputs the total length of all of the splines as a float. The second creates a float attribute on the spline domain and fills it with the values for each spline.

Further Questions

The name "Calculate Curve Length" might be better (more clear), but it is longer.

Implementation
Implementation is trivial, this can use the Spline::length() function.

Changed status from 'Needs Triage' to: 'Confirmed'

Added subscriber: @HooglyBoogly

Added subscriber: @guitargeek

The result of discussions today among the geometry nodes team:

The node should not have two modes, instead it should only have the "Total" mode, with no geometry output.
Per-spline length can be exposed as a read-only attribute on the spline domain.

This issue was referenced by ddd4b2b785

Changed status from 'Confirmed' to: 'Resolved'