Aligning Spline Points to Landscape

Several users have asked about snapping SplineArchitectWall to a landscape. Unreal Engine 5 already provides the necessary tools. Below are two recommended workflows.

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1. Draw Spline Tool (Modeling Tools)

UE5’s Draw Spline tool can directly create a spline inside an existing SplineArchitectWall and project it onto the landscape.

Steps:

1. Select your SplineArchitectWall actor in the viewport.
2. Go to Modeling Tools → Draw Spline.
3. In the tool settings, set Output Mode → Existing Actor.
4. The spline points will be added directly onto the landscape, inside the selected SplineArchitectWall.

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2. Snapping selected Spline Points

If you already have a spline but want to quickly snap all spline points to the terrain (or any underlying geometry), use this method:

Steps:

1. In the Outliner, select your SplineArchitectWall actor. Move it slightly above the landscape.
2. In the Details Panel, under the Spline Component, press Select All Spline Points.
3. In the Viewport, right-click on the spline and choose Snap To Floor.

This snaps all points at once, instead of snapping them one by one with the END key.