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#ifndef MATH_VECTOR4_H
#define MATH_VECTOR4_H
/*
GLT OpenGL C++ Toolkit (LGPL)
Copyright (C) 2000-2002 Nigel Stewart
Email: nigels@nigels.com
WWW: http://www.nigels.com/glt/
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
*/
/*! \file
\brief 4D Vector
\ingroup Math
*/
#include <iosfwd>
#include <string>
#include "glt_config.h"
#include "glt_real.h"
////////////////////////// Vector4 /////////////////////////////////
/*! \class Vector4
\brief 4D Vector
\ingroup Math
*/
class Vector4
{
friend std::ostream &operator<<(std::ostream &os, const Vector4 &x);
friend std::istream &operator>>(std::istream &is, Vector4 &x);
public:
/// Default constructor
Vector4();
/// Copy constructor
Vector4(const Vector4 &v);
/// Constructor
Vector4(const real x, const real y,const real z,const real w = 0.0);
/// Constructor
Vector4(const float *v);
/// Constructor
Vector4(const double *v);
/// Construct from string
Vector4(const std::string &str);
/// x co-ordinate
real &x();
/// x co-ordinate
const real &x() const;
/// y co-ordinate
real &y();
/// y co-ordinate
const real &y() const;
/// z co-ordinate
real &z();
/// z co-ordinate
const real &z() const;
/// w co-ordinate
real &w();
/// w co-ordinate
const real &w() const;
/// i'th co-ordinate
real &operator[](const int i);
/// i'th co-ordinate
const real &operator[](const int i) const;
/// Access as array
operator real* (void) { return _vector; }
/// Access as array
const real* data() const { return _vector; }
void glLight(GLenum light, GLenum pname) const;
protected:
/// Storage for x, y and z components
real _vector[4];
};
#endif
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