ARKit-3 API Changes ARFrameSemantics (ARConfiguration::frameSemantics) ARConfiguration::supportsFrameSemantics Motion Capture Sample - Capturing Body Motion in 3D ARBodyTrackingConfiguration ARSkeleton ARSkeletonDefinition (ARSkeleton::definition) ARBodyAnchor ARSkeleton3D (ARBodyAnchor::skeleton) ARBody2D (ARFrame::detectedBody) ARSkeleton2D (ARBody2D::skeleton) ARFrameSemanticBodyDetection People Occlusion Sample - Occluding Virtual Content with People Sample - Effecting People Occlusion in Custom Renderers ARFrame::segmentationBuffer ARFrame::estimatedDepthData ARSegmentationClass ARMatteGenerator