CODEWITHSUNDEEP
swiftscenekit
oneiros
oneiros

Reputation: 3578

SceneKit: sceneView projectPoint with multiple cameras

If a scene contains multiple cameras, which camera does the projectPoint method use to project points from 3D to screen-space? If this is defined by the pointOfView property, then how come when I update the position of the pointOfView a given 3D point is still projected to the same 2D point?

Upvotes: 1

Views: 621

Answers (1)

Andy Jazz
Andy Jazz

Reputation: 58553

Since SCNCamera belongs to SCNView, just set the PoV via the "pointOfView" instance property of a View to a required camera node.

let cameraNode001 = SCNNode()
cameraNode001.camera = SCNCamera()
scene.rootNode.addChildNode(cameraNode001)
cameraNode001.position = SCNVector3(x: 0, y: 0, z: 15)

let cameraNode002 = SCNNode()
cameraNode002.camera = SCNCamera()
scene.rootNode.addChildNode(cameraNode002)
cameraNode002.position = SCNVector3(x: 10, y: 10, z: 30)

let sceneView = self.view as! SCNView 
sceneView.scene = scene


sceneView.pointOfView = cameraNode001

then you can change PoV:

sceneView.pointOfView = cameraNode002

Upvotes: 1

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