---
title: "PortalFactory.Style.plane(width:height:radius:)"
framework: realitykit
role: symbol
role_heading: Case
path: "realitykit/portalfactory/style/plane(width:height:radius:)"
---

# PortalFactory.Style.plane(width:height:radius:)

A flat or curved planar portal.

## Declaration

```swift
case plane(width: Float, height: Float, radius: Float = 0.0)
```

## Parameters

- `width`: The width of the portal plane in meters. Must be positive.
- `height`: The height of the portal plane in meters. Must be positive.
- `radius`: The radius of curvature. Zero creates a flat plane (default), positive values create a cylindrical curved portal. Must be non-negative.

## Discussion

Discussion Creates a rectangular portal that can be flat or curved into a cylindrical shape. The portal surface uses a plane mesh generated with MeshResource.generatePlane. Coordinate Space The portal plane is positioned at the entity’s local origin [0, 0, 0] with a normal facing the positive Z direction [0, 0, 1].