Reference TVec2

  TVec2 = record
  public
    { Returns true if both components match }
    function Equals(const Value: TVec2): Boolean; inline;
    { The angle in radians from the origin to this vector }
    function Angle: Float; overload;
    { The angle in radians from this vector to a point }
    function Angle(X, Y: Float): Float; overload;
    function Angle(const V: TVec2): Float; overload;
    { The length of the vector }
    function Distance: Float; overload;
    { The distance from this vector to a point }
    function Distance(X, Y: Float): Float; overload;
    function Distance(const V: TVec2): Float; overload;
    { Move this vector by an amount }
    procedure Offset(X, Y: Float); overload;
    procedure Offset(const V: TVec2); overload;
    { Return a copy of this vector moved by an amount }
    function Move(X, Y: Float): TVec2; overload;
    function Move(const V: TVec2): TVec2; overload;
    { Scale the vector to a length of 1 }
    procedure Normalize;
    { Return a copy of the vector scaled to a length of 1 }
    function Normal: TVec2;
    { Return the normal rotated 90 degrees }
    function Binormal: TVec2;
    { The point halfway between this vector and another }
    function Mid(const V: TVec2): TVec2;
    { The point a distance from this vector toward V }
    function Extend(const V: TVec2; Dist: Float): TVec2;
    { Rotate V around this vector by an angle in radians }
    function Rotate(const V: TVec2; Angle: Float): TVec2;
    X: Float;
    Y: Float;
    S: Float;
    T: Float;
    Vec1: TVec1;
    V: array[0..1] of Float;
  end;