Last Updated: 7th August 2023

Latest Version: 1.00, 7th August 2023

rdSplineTools is an Editor Plugin that speeds up the editing of large splines in your Unreal Engine levels by huge amounts without the need to move to other forms of spline mesh creation.

It seamlessly splits splines into as many sub-splines as you wish – editing a subspline has no impact on other subsplines unless their end points match, in which case the matching end point moves accordingly.

You can also add new splines attached to the main spline (eg, sub-roads at intersections etc).

When editing your spline points, if you hold down “z” while dragging, the point Snaps to the closest Socket on the SplineMeshes (any socket within a radius). If you hold down “x” while “z” is held, it calls a custom function you can create in your spline blueprint to create any type of snapping you wish.

Another tool included provides the ability to copy all spline point data to the clipboard from where you can paste into a text file (or source file) as a backup. Then you can copy that back to the spline if you ever want to revert it.


  • Speed up editing splines by Huge amounts
  • Split your splines up for better World Partition support
  • Focus on small sections of road/path etc at a time without impacting the rest
  • Store text based copies of the spline data for backups and export/import
  • Snap spline points to mesh sockets in realtime