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/* ----------------------------------------------------------------------- *
 * This file is part of GEL, http://www.imm.dtu.dk/GEL
 * Copyright (C) the authors and DTU Informatics
 * For license and list of authors, see ../../doc/intro.pdf
 * ----------------------------------------------------------------------- */

/** @file ArithVec4Float.h
 * @brief Abstract 4D floating point vector class
 */

#ifndef __CGLA_ARITHVEC4FLOAT_H__
#define __CGLA_ARITHVEC4FLOAT_H__

#include "ArithVecFloat.h"

namespace CGLA {

        /** \brief A four dimensional floating point vector template. 

                        This class is also used (via typedef) for
                        homogeneous vectors.
        */

        template<class T, class V>
        class ArithVec4Float: public ArithVecFloat<T,V,4>
        {
        public:
  
                /// Construct a (0,0,0,0) homogenous Vector
                ArithVec4Float() {}

                /// Construct a 4D vector
                ArithVec4Float(T a, T b, T c, T d): 
                        ArithVecFloat<T,V,4>(a,b,c,d) {}

                /// Divide all coordinates by the fourth coordinate
                void de_homogenize()
                {
                        float k = 1.0/(*this)[3];
                        (*this)[0] = (*this)[0]*k;
                        (*this)[1] = (*this)[1]*k;
                        (*this)[2] = (*this)[2]*k;
                        (*this)[3] = 1.0;
                }

        };
}
#endif