How do I lock a direction for particle size scaling?

Yo!

I’m trying to create a laser in cascade using a mesh and I’ve got the whole system exactly how I want it except that as I’m using size by life to actually create the beam it scales along both sides of the y axis. Is there any way to either lock the -y axis for scaling or change the origin point of the scale?

Thanks!

edit - I would guess I’m supposed to use pivot offset but when I add it , it has a red cross on the node.

the pivot point of the mesh should be where it starts at the laser-cannon or whatever starting location you are choosing. that way scaling it is easy peasy.

Is there any way to change the pivot point in unreal because I’ve already tried changing it in blender but for some reason unreal resets the pivot when i import it :confused:

Edit - I’ve realised that there is a tick box in the import settings however it’s greyed out unless I un-tick ‘transform vertex to absolute’, but if i do that then the whole mesh gets very warped in unreal :confused:
Edit 2 - I think it may be an issue with the export, any idea how to fix it?

In Blender, the world location 0,0,0 is always the pivot, so just make sure to place your mesh depending on that.

HOLY **** THANK YOU

Jeez I was ripping my hair out over this and that is such a simple solution XD thank you!!!