Send to Unreal - Hair Curves exported as guides only

[sv3nk]

• Addon: i.e Send to Unreal
• Steps to Reproduce the Problem:
  In Blender, create hair system using curves
  Place guides on mesh
  Create hair by using Interpolate Hair Curves Modifier
  Move mesh and curves into export folder
  Export to Unreal
  In Unreal, open groom
  Only guides are visible / have been exported
• Error Log:
• OS: Windows 11
• Addon Version:
  Send to Unreal 2.4.3
• Blender Version:
  Blender 3.6
• Unreal Version:
  Unreal 5.3

[sv3nk]

Seems like this is easily solved by applying all modifiers before pushing the assets to Unreal Engine.
Maybe this could be added to the documentation as a necessary step.

[DanMcLaughlin]

Setting the 'check for unapplied modifiers' will catch it too

[sv3nk]

That is correct. Also:

When designing a groom in Blender using curves, it will look very jagged in Unreal.
The reason for that is, that in Blender you can use Subdivision in the Viewport settings to make it look better.

That subdivision is never applied to the curves.

To prevent that, it is useful for the user to convert their curves into particles and set the render subdivision for particles.
That way, subdivision is actually applied before exporting.

Turning the subdivision too high results in some unexpected results though, where the hair gets very short for whatever reason.
I found that a value of 4 to 6 works best.

Maybe that could be added to the documentation.

[DanMcLaughlin]

Seems like the plugin is understaffed these days; I'd suggest taking a little time and adding it yourself, it's only a little markdown.