MotionEyeTracking2行为 将原始Vicon标记和眼睛跟踪数据3D转换为旋转和平移数据 input: raw Vicon marker and eye data output: behavior data including 1) horizontal head position 2) head height 3) translational speed 4) azimuth head direction corrected for tilt 5) azimuth movement direction 6) head tilt: yaw, pitch, roll 7) head angular velocity about: yaw, pitch, roll