Han 的 github 代码的 Objective-C 版本,sceneViews 以编程方式创建,y + z 位置未更新 - 全部归功于 Han:
-(void)setup{
//left
leftSceneView = [ARSCNView new];
leftSceneView.frame = CGRectMake(0, 0, w, h/2);
leftSceneView.delegate = self;
leftSceneView.autoenablesDefaultLighting = true;
[self.view addSubview:leftSceneView];
//right
rightSceneView = [ARSCNView new];
rightSceneView.frame = CGRectMake(0, h/2, w, h/2);
rightSceneView.playing = true;
rightSceneView.autoenablesDefaultLighting = true;
[self.view addSubview:rightSceneView];
//scene
SCNScene * scene = [SCNScene new];
leftSceneView.scene = scene;
rightSceneView.scene = scene;
//tracking
ARWorldTrackingConfiguration * configuration = [ARWorldTrackingConfiguration new];
configuration.planeDetection = ARPlaneDetectionHorizontal;
[leftSceneView.session runWithConfiguration:configuration];
}
-(void)renderer:(id<SCNSceneRenderer>)renderer updateAtTime:(NSTimeInterval)time {
dispatch_async(dispatch_get_main_queue(), ^{
//update right eye
SCNNode * pov = self->leftSceneView.pointOfView.clone;
SCNQuaternion orientation = pov.orientation;
GLKQuaternion orientationQuaternion = GLKQuaternionMake(orientation.x, orientation.y, orientation.z, orientation.w);
GLKVector3 eyePosition = GLKVector3Make(1, 0, 0);
GLKVector3 rotatedEyePosition = GLKQuaternionRotateVector3(orientationQuaternion, eyePosition);
SCNVector3 rotatedEyePositionSCNV = SCNVector3Make(rotatedEyePosition.x, rotatedEyePosition.y, rotatedEyePosition.z);
float mag = 0.066f;
float rotatedX = pov.position.x + rotatedEyePositionSCNV.x * mag;
float rotatedY = pov.position.y;// + rotatedEyePositionSCNV.y * mag;
float rotatedZ = pov.position.z;// + rotatedEyePositionSCNV.z * mag;
[pov setPosition:SCNVector3Make(rotatedX, rotatedY, rotatedZ)];
self->rightSceneView.pointOfView = pov;
});
}