Function toAxisAngle

toAxisAngle(q, dst?): {
angle: number;
axis: Vec3;
}
Gets the rotation axis and angle
Parameters
- q: Quat
  quaternion to compute from
- Optional dst: Vec3
  Vec3 to hold result. If not passed in a new one is created.
Returns {
angle: number;
axis: Vec3;
}
angle and axis
- angle: number
- axis: Vec3