November 6, 2019 update:
  • There's a new open source Cardboard SDK that offers a streamlined API, improved device compatibility, and built-in viewer profile QR code scanning. We recommend that all developers actively building for Google Cardboard migrate to the new Cardboard SDK: iOS, Android NDK, Unity XR Plugin (SDK)
October 15, 2019 update:
  • The Daydream View VR headset is no longer available for purchase. However, you can continue to use the existing Google VR SDK to update and distribute your apps to the Google Play Store, and make them available to users in the Daydream app.

GVRHeadRotation Struct

GVRHeadRotation Struct Reference


Contains yaw and pitch angles corresponding to where the user is looking.

yaw is the rotation along the vertical (y) axis. Values are in the [-180, 180] range with:

  • 0 == looking straight at the initial image orientation
  • 90 == looking 90 degrees to the right
  • -90 == looking 90 degrees to the left
  • 180 == -180 == looking in the direction opposite to the initial one

pitch is the rotation along the right (x) axis previously rotated by yaw. Values are in the [-90, 90] range with:

  • 0 == looking straight, level with the ground
  • 90 == looking up
  • -90 == looking down

When pitch approaches 90 or -90, yaw values are reset to zero as computing the yaw values becomes numerically unstable.

Protected Attributes

CGFloat yaw
CGFloat pitch