1. -- 
  2. -- Jan & Uwe R. Zimmer, Australia, July 2011 
  3. -- 
  4.  
  5. with Float_Type; use Float_Type; 
  6. with Vectors_xD; 
  7.  
  8. package Vectors_2D is 
  9.  
  10.    type xy_Coordinates is (x, y); 
  11.  
  12.    package Vectors_2Di is new Vectors_xD (Real, xy_Coordinates); 
  13.  
  14.    subtype Vector_2D is Vectors_2Di.Vector_xD; 
  15.  
  16.    Zero_Vector_2D : constant Vector_2D := Vectors_2Di.Zero_Vector_xD; 
  17.  
  18.    function Image (V : Vector_2D) return String renames Vectors_2Di.Image; 
  19.  
  20.    function Norm (V : Vector_2D) return Vector_2D renames Vectors_2Di.Norm; 
  21.  
  22.    function "*" (Scalar : Real; V : Vector_2D) return Vector_2D renames Vectors_2Di."*"; 
  23.    function "*" (V : Vector_2D; Scalar : Real) return Vector_2D renames Vectors_2Di."*"; 
  24.    function "/" (V : Vector_2D; Scalar : Real) return Vector_2D renames Vectors_2Di."/"; 
  25.  
  26.    function "*" (V_Left, V_Right : Vector_2D) return Real renames Vectors_2Di."*"; 
  27.  
  28.    function Angle_Between (V_Left, V_Right : Vector_2D) return Real renames Vectors_2Di.Angle_Between; 
  29.  
  30.    function "+" (V_Left, V_Right : Vector_2D) return Vector_2D renames Vectors_2Di."+"; 
  31.    function "-" (V_Left, V_Right : Vector_2D) return Vector_2D renames Vectors_2Di."-"; 
  32.  
  33.    function "abs" (V : Vector_2D) return Real renames Vectors_2Di."abs"; 
  34.  
  35. end Vectors_2D;