Polygon Profile (Pro)

A Polygon Profile (URoadPolygonProfile) is a reusable asset that stores one or more 2D closed polygon shapes. The Polygon Attribute (Pro) uses them to place custom overlays — stop lines, arrows, hatching, and the like — on road lanes.

Properties

Each profile holds an array of Polygon entries. Every entry defines:

Property	Description
Curve	A 2D Hermite spline (FInterpCurveVector2D) defining the closed polygon outline in local lane space
RoadZone	Road surface type applied to this polygon (determines its material and color)
TextureAngle	UV texture rotation in degrees
TextureScale	UV texture scale multiplier
MaxSquareDistanceFromSpline	Curve-to-polyline simplification tolerance

Create one from the Content Browser (right-click → Meta Road → Polygon Profile); double-click it to open the Polygon Profile editor.

The Polygon Profile editor

A dedicated 2D canvas for drawing and shaping the polygons.

• Canvas viewport — the 2D editing surface. All polygons in the profile are shown together; the active polygon is highlighted while the others are dimmed.

• Details panel — properties of the profile and its polygon entries (the table above).

Canvas controls:

• LMB drag — move a polygon point, or its tangent handle (for Hermite/curved segments).

• RMB — context menu to add or delete polygons and individual points.

• Scroll — zoom in / out.

• MMB / RMB drag — pan the canvas.

How it’s used

• Referenced by the Profile of a Polygon Attribute key — one shape can be reused across many lanes.

• Can be dragged from the Content Browser onto a road lane to add a polygon key at the point nearest the cursor.

See also

• Profiles — all Meta Road profile assets.

• Polygon Attribute — places a Polygon Profile shape on a lane.