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Vector.h

// Mesh Algorithms: a library of algorithms to manipulate 3D meshes
// Copyright (C) 2001 Tim Garthwaite and Jason Reposa

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef VECTOR_H
#define VECTOR_H

#include <string>
#include <cstdio>

class Vector {
  float data[4];

 public:
  Vector( const float x=0.0, 
          const float y=0.0, 
          const float z=0.0, 
          const float w=1.0 
        );

  // Access methods
  float   x () const; 
  float   y () const; 
  float   z () const; 
  float   w () const; 

  float & x (); 
  float & y (); 
  float & z (); 
  float & w (); 

  // Methods
  float magnitude() const; 
  void  normalize(); 
  void  set(float nx, float ny, float nz); 

  // Operators
  friend Vector operator + (const Vector &v1, const Vector &v2); 
  friend Vector operator - (const Vector &v1, const Vector &v2); 
  friend float  dot        (const Vector &v1, const Vector &v2); 
  friend Vector cross      (const Vector &v1, const Vector &v2); 
  std::string toString(); 

};

#endif

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