---
title: "projectPoint(_:)"
framework: spritekit
role: symbol
role_heading: Instance Method
path: "spritekit/sk3dnode/projectpoint(_:)"
---

# projectPoint(_:)

Projects a point from the 3D world coordinate system of the SceneKit scene to the 2D viewport coordinate system of the SpriteKit node.

## Declaration

```swift
func projectPoint(_ point: vector_float3) -> vector_float3
```

## Parameters

- `point`: A point in the world coordinate system of the Scene Kit scene.

## Return Value

Return Value The corresponding point in the SpriteKit node’s coordinate system.

## Discussion

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 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, node. The code assumes that sphereNode is the first child node of the SceneKit scene’s rootNode. 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))) }

## See Also

### Projecting Points and Performing Hit-Testing

- [hitTest(_:options:)](spritekit/sk3dnode/hittest(_:options:).md)
- [unprojectPoint(_:)](spritekit/sk3dnode/unprojectpoint(_:).md)