# projectPoint(_:) Projects a point from the 3D world coordinate system of the SceneKit scene to the 2D viewport coordinate system of the SpriteKit node. ``` func projectPoint(_ point: vector_float3) -> vector_float3 ``` ## Parameters `point` A point in the world coordinate system of the Scene Kit scene. ## Return Value The corresponding point in the SpriteKit node’s coordinate system. ## Discussion The z-coordinate of the returned point describes the depth of the projected point relative to the near and far clipping planes of the viewing frustum (defined by the [`pointOfView`](/documentation/SpriteKit/SK3DNode/pointOfView) property). Projecting a point on the near clipping plane returns a point whose z-coordinate is `0.0`; projecting a point on the far clipping plane returns a point whose z-coordinate is `1.0`. The following Swift code illustrates how you might convert the position of a SceneKit node, `sphereNode`, in 3D space to the 2D coordinates of a SpriteKit [`SK3DNode`](/documentation/SpriteKit/SK3DNode), `node`. The code assumes that `sphereNode` is the first child node of the SceneKit scene’s . ```swift if let sphereNode = node.scnScene?.rootNode.childNodes.first { let location = node.projectPoint(vector_float3(Float(sphereNode.position.x), Float(sphereNode.position.y), Float(sphereNode.position.z))) } ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)