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find a better place for leftward pos/neg rotations
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rennis250 committed Sep 2, 2024
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Expand Up @@ -94,10 +94,6 @@ When relating data from the IMU to things visible in the scene camera, it may be

![IMU Scene Camera](./imu-scene_camera_offset-black.png)

::: tip
Note that leftward rotations for the yaw values reported by the IMU are positive, whereas leftward rotations about the y-axis of the scene camera coordinate system are negative.
:::

### Euler Angles

When exporting recordings from Pupil Cloud or Neon Player the IMU's orientation in Euler angles (i.e. pitch, yaw, and roll) is also available:
Expand All @@ -107,7 +103,7 @@ When exporting recordings from Pupil Cloud or Neon Player the IMU's orientation
- Roll is a rotations around the world y-axis with a value range of -180° to +180°. Wearing Neon upright with a neutral head pose roughly corresponds to a roll of 0°. Rightward tilt is positive, leftward is negative.

::: tip
Neon may sit differently on each wearer’s face, causing deviations from a neutral orientation even when facing magnetic north.
Neon may sit differently on each wearer’s face, causing deviations from a neutral orientation even when facing magnetic north. Also, leftward rotations for the yaw values reported by the IMU are positive, whereas leftward rotations about the y-axis of the scene camera coordinate system are negative.
:::

![IMU Pitch, Yaw, Roll](./imu-pitch-yaw-roll-black.png)

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