A right circular cylinder geometry.
SDKs
- iOS 8.0+
- macOS 10.8+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Scene
Kit
Declaration
class SCNCylinder : SCNGeometry
Overview
A cylinder and its properties
A cylinder defines the surface of a solid whose every cross section along a linear axis is a circle of equal size. Define the size of the cylinder’s cross section in the x- and z-axis dimensions of its local coordinate space with the radius property, and its extent in the y-axis dimension with the height property. To position and orient a cylinder in a scene, attach it to the geometry property of an SCNNode object.
Control the level of detail with the radial and height properties. A higher radial segment count creates a smoother curve for the cylinder’s circular sides. A higher segment count in either direction produces more vertices, which can improve rendering quality for certain lighting models or custom shader effects, but at a cost to rendering performance.
A cylinder contains three SCNGeometry objects: one each for its base and top, and one that wraps around its sides. SceneKit can render each element using a different material. For details, see the materials property in SCNGeometry.