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#include "glt_vector4.h"
/*! \file
\ingroup Math
*/
#include "glt_string.h"
#include <cassert>
#include <cmath>
#include <iostream>
#include <algorithm>
using namespace std;
Vector4::Vector4()
{
_vector[0] = _vector[1] = _vector[2] = _vector[3] = 0.0;
}
Vector4::Vector4(const Vector4 &v)
{
_vector[0] = v._vector[0];
_vector[1] = v._vector[1];
_vector[2] = v._vector[2];
_vector[3] = v._vector[3];
}
Vector4::Vector4(const real x, const real y, const real z,const real w)
{
_vector[0] = x;
_vector[1] = y;
_vector[2] = z;
_vector[3] = w;
}
Vector4::Vector4(const float *v)
{
_vector[0] = v[0];
_vector[1] = v[1];
_vector[2] = v[2];
_vector[3] = v[3];
}
Vector4::Vector4(const double *v)
{
_vector[0] = v[0];
_vector[1] = v[1];
_vector[2] = v[2];
_vector[3] = v[3];
}
Vector4::Vector4(const string &str)
{
#ifndef NDEBUG
const int n =
#endif
atoc(str,atof,"+-eE.0123456789",_vector+0,_vector+4);
assert(n==4);
}
const real &
Vector4::operator[](const int i) const
{
assert(i>=0 && i<4);
return _vector[i];
}
real &
Vector4::operator[](const int i)
{
assert(i>=0 && i<4);
return _vector[i];
}
// Vector4::operator real* (void)
// {
// return (real *) _vector;
// }
real &Vector4::x() { return _vector[0]; }
const real &Vector4::x() const { return _vector[0]; }
real &Vector4::y() { return _vector[1]; }
const real &Vector4::y() const { return _vector[1]; }
real &Vector4::z() { return _vector[2]; }
const real &Vector4::z() const { return _vector[2]; }
real &Vector4::w() { return _vector[3]; }
const real &Vector4::w() const { return _vector[3]; }
void
Vector4::glLight(GLenum light, GLenum pname) const
{
#ifdef GLT_FAST_FLOAT
glLightfv(light, pname, _vector);
#else
GLfloat params[4];
params[0] = _vector[0];
params[1] = _vector[1];
params[2] = _vector[2];
params[3] = _vector[3];
glLightfv(light, pname, params);
#endif
}
////////////////////////// F R I E N D S
/*!
\brief Output vector to stream
\ingroup Math
*/
ostream &
operator<<(ostream &os, const Vector4 &x)
{
os << x[0] << '\t';
os << x[1] << '\t';
os << x[2] << '\t';
os << x[3];
return os;
}
/*!
\brief Input vector from stream
\ingroup Math
*/
istream &
operator>>(istream &is, Vector4 &x)
{
is >> x[0];
is >> x[1];
is >> x[2];
is >> x[3];
return is;
}
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