| 667 |
khor |
1 |
/* ----------------------------------------------------------------------- *
|
|
|
2 |
* This file is part of GEL, http://www.imm.dtu.dk/GEL
|
|
|
3 |
* Copyright (C) the authors and DTU Informatics
|
|
|
4 |
* For license and list of authors, see ../../doc/intro.pdf
|
|
|
5 |
* ----------------------------------------------------------------------- */
|
|
|
6 |
|
|
|
7 |
/** @file ArithVec4Float.h
|
|
|
8 |
* @brief Abstract 4D floating point vector class
|
|
|
9 |
*/
|
|
|
10 |
|
|
|
11 |
#ifndef __CGLA_ARITHVEC4FLOAT_H__
|
|
|
12 |
#define __CGLA_ARITHVEC4FLOAT_H__
|
|
|
13 |
|
|
|
14 |
#include "ArithVecFloat.h"
|
|
|
15 |
|
|
|
16 |
namespace CGLA {
|
|
|
17 |
|
|
|
18 |
/** \brief A four dimensional floating point vector template.
|
|
|
19 |
|
|
|
20 |
This class is also used (via typedef) for
|
|
|
21 |
homogeneous vectors.
|
|
|
22 |
*/
|
|
|
23 |
|
|
|
24 |
template<class T, class V>
|
|
|
25 |
class ArithVec4Float: public ArithVecFloat<T,V,4>
|
|
|
26 |
{
|
|
|
27 |
public:
|
|
|
28 |
|
|
|
29 |
/// Construct a (0,0,0,0) homogenous Vector
|
|
|
30 |
ArithVec4Float() {}
|
|
|
31 |
|
|
|
32 |
/// Construct a 4D vector
|
|
|
33 |
ArithVec4Float(T a, T b, T c, T d):
|
|
|
34 |
ArithVecFloat<T,V,4>(a,b,c,d) {}
|
|
|
35 |
|
|
|
36 |
/// Divide all coordinates by the fourth coordinate
|
|
|
37 |
void de_homogenize()
|
|
|
38 |
{
|
|
|
39 |
float k = 1.0/(*this)[3];
|
|
|
40 |
(*this)[0] = (*this)[0]*k;
|
|
|
41 |
(*this)[1] = (*this)[1]*k;
|
|
|
42 |
(*this)[2] = (*this)[2]*k;
|
|
|
43 |
(*this)[3] = 1.0;
|
|
|
44 |
}
|
|
|
45 |
|
|
|
46 |
};
|
|
|
47 |
}
|
|
|
48 |
#endif
|
|
|
49 |
|