iosobjective-cscenekitscnnodescnsphere

Accessing SCNSphere Properties

I am trying to access / modify the properties of an SCNSphere that I have in a SCNScene. I have the scene pre-set as a file called "spaceScene.scn". I am loading the scene as such

self.sceneView.scene = [SCNScene sceneNamed:@"spaceScene.scn"];
self.sceneView.allowsCameraControl = YES;
self.sceneView.scene.rootNode.camera = [SCNCamera camera];
SCNSphere *earth = (SCNSphere *)[self.sceneView.scene.rootNode childNodeWithName:@"earth" recursively:NO];

NSMutableArray *materials = earth.materials;
NSLog(@"Materials of earth from scene: %@", materials);

I can not seem to get past reading the materials property of the SCNSphere earth. I keep getting an instance error:

-[SCNNode materials]: unrecognized selector sent to instance 0x1701c5550

Feeling a little silly with this issue but please someone just tell me how to access the sphere properties? thanks

Solution

  • SCNSphere does not inherit from SCNNode. You should rather retrieve the node's geometry which can be a sphere.