Quaternion

function Quaternion(

  x: single;

  y: single;

  z: single;

  w: single

):TQuaternion; overload;

function Quaternion(

  const M: TMatrix

):TQuaternion; overload;

function Quaternion(

  const x: TVector;

  const y: TVector;

  const z: TVector

):TQuaternion; overload;

function Quaternion(

  const x: single;

  const y: single;

  const z: single

):TQuaternion; overload;

function Quaternion(

  const axis: TVector;

  radians: single

):TQuaternion; overload;