GVRHeadRotation Struct

Protected Attributes

GVRHeadRotation Struct Reference

Overview

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