Are SceneKit eulerAngles Floats or CGFloats?

Question

According to the SceneKit API, euler angles, as a property of SCNNode, are SCNVector3. And SCNVector3 is { CGFloat x, y, z: }. But when I attempt to assign a CGFloat to a eulerAngle property of a node, Xcode claims I'm trying to assign to type 'Float'. Here's a snippet from my panGesture handler:

    baseNode.eulerAngles.x = newAngleX

I can avoid this by casting as Floats but I'm curious, especially since SCNVector3 still seems to accept CGFloats.

For whatever reason, it is `Float` on iOS and `CGFloat` on OS X. — Martin R, Feb 24 '16 at 20:03

score 1 · Answer 1 · answered Feb 24 '16 at 19:51

You're right, the documentation is wrong. Directly from SceneKit/SceneKitTypes.h:

typedef struct SCNVector3 {
    float x, y, z;
} SCNVector3;

Which, amongst other things, means they're 32-bit regardless of target, unlike CGFloats. So it's not a mere typedef issue despite the naming similarity — Swift is right to want an explicit cast.

Are SceneKit eulerAngles Floats or CGFloats?

1 Answers1