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GVRHeadRotation Struct

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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