Function axisRotation

axisRotation(axis, angleInRadians, dst?): Mat4
Creates a 4-by-4 matrix which rotates around the given axis by the given angle.
Parameters
- axis: Vec3
  The axis about which to rotate.
- angleInRadians: number
  The angle by which to rotate (in radians).
- Optional dst: Mat4
  matrix to hold result. If not passed a new one is created.
Returns Mat4
A matrix which rotates angle radians around the axis.