Hello. So I’m pretty new to blueprints and can’t figure out how to exclude a certain axis when setting the start and end tangents of a spline mesh. I’d like to have a mesh deform with the spline, but only on X and Y, and retain the step like structure as shown with the bottom mesh. Any help would be…

No idea what made it work, best guess is not connecting the Z vector for the tangents. [UnrealEditor_MYltZMOWco] [UnrealEditor_Tbm8STz8rK]

Hi modimist, If you want each step to retain it’s original shape - just use normal static meshes rather than spline static meshes.

Hey RecourseDesign, I may have mistyped, as far as I can tell I am using a static mesh, not a spline mesh… I think. This is the deform spline graph I’m trying to make the step functionality work with. [UnrealEditor_4n9VX0Sr8i]

Okay, gave that a go and seeing the issue with combining the two, but not finding an alternative for the “set start and end”, as the Target no longer works. Also not sure if I should split struct and just be grabbing Z rotation? Might of went over my head a bit, sorry! [UnrealEditor_OmTzzXQ8i1]

You don’t need the Start/Stop at all - that “Relative Transform” is all you need. Regarding the rotation - you may need to experiment with that, using GetRotationAtDistanceAlongSpline may give better results: (I just used AtSplinePoint() for eg) [image]

Hmm, yeah still no deformation. Seem to lose it if I don’t use the “set start and end” node. [PureRef_a1atB8kN4s]

I’m sorry, I thought you were trying to remove the deformation. In that case, just have the code as you originally had it, but in the End Location - use the Start Locations Z value. [image] I feel bad for wasting your time now!

Oh no worries! I’m just happy to be getting a response on here, so thank you! As for your last message, definitely a step in the right direction. Looks fine from the top and is deforming, but from the side, still a bit wonky and not like stairs/steps. Any ideas? [PureRef_0TTTOX1w5H]

Yeah, I think you’ll need to set the y tangent (I think it will be y, maybe x) to 0.0 on both start and stop - I’m guessing now though…

This is the only way I could think to make X or Y zero. Not sure if thats what you meant, but either way, no luck fixing it with that. Eh, I’ll keep trying things and see where I get. Thanks again for all the help! [UnrealEditor_PXC0WqhraX]

Stair spline BP with deformation on certain axis

Development Programming & Scripting Blueprint

RecourseDesign (RecourseDesign) June 6, 2023, 6:33pm 4