WebSVN – gelsvn – Diff – /trunk/src/CGLA/ArithSqMat3x3Float.h


/* ----------------------------------------------------------------------- *
 * 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 ArithSqMat3x3Float.h
 * @brief Abstract 3x3 floating point matrix class
 */
 
#ifndef __CGLA_ARITHSQMAT3X3FLOAT_H__
#define __CGLA_ARITHSQMAT3X3FLOAT_H__
 
#include "ExceptionStandard.h"
#include "CGLA.h"
#include "Vec3f.h"
#include "ArithSqMatFloat.h"
 
namespace CGLA 
{
 
  CGLA_DERIVEEXCEPTION(Mat3x3fException)
    CGLA_DERIVEEXCEPTION(Mat3x3fSingular)
 
    /** \brief 3 by 3 float matrix template.
				
		This class template will typically be used for rotation or
		scaling matrices for 3D vectors. */
    template<class V, class M>
    class ArithSqMat3x3Float: public ArithSqMatFloat<V, M, 3>
    {
    public:
 
      /// Vector type
      typedef V VectorType;
 
      /// The type of a matrix element
      typedef typename V::ScalarType ScalarType;
 
    public:
 
      /// Construct matrix from 3 Vec3f vectors.
      ArithSqMat3x3Float(V _a, V _b, V _c): 
	ArithSqMatFloat<V, M, 3> (_a,_b,_c) {}
  
      /// Construct the 0 matrix
      ArithSqMat3x3Float() {}
 
      /// Construct a matrix from a single scalar value.
      explicit ArithSqMat3x3Float(ScalarType a): 
	ArithSqMatFloat<V, M, 3>(a) {}
 
    };
 
  /// Invert 3x3 matrix
  template<class V, class M>
    M invert(const ArithSqMat3x3Float<V,M>&);
 
  /** Compute determinant. There is a more generic function for
      computing determinants of square matrices (ArithSqMat). This one
      is faster but works only on Mat3x3f */
  template<class V, class M>
    inline 
    typename ArithSqMat3x3Float<V,M>::ScalarType
    determinant(const ArithSqMat3x3Float<V,M>& m)
    {
      return 
	m[0][0]*m[1][1]*m[2][2] +
	m[0][1]*m[1][2]*m[2][0] +
	m[0][2]*m[1][0]*m[2][1] -
	m[0][2]*m[1][1]*m[2][0] -
	m[0][0]*m[1][2]*m[2][1] -
	m[0][1]*m[1][0]*m[2][2] ;
    }
 
 
}
#endif
 
 
 
 
 
 
 
 

Rev 89	Rev 595
-		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 ArithSqMat3x3Float.h`
-		8	`* @brief Abstract 3x3 floating point matrix class`
-		9	`*/`
-		10
1	`#ifndef __CGLA_ARITHSQMAT3X3FLOAT_H__`	11	`#ifndef __CGLA_ARITHSQMAT3X3FLOAT_H__`
2	`#define __CGLA_ARITHSQMAT3X3FLOAT_H__`	12	`#define __CGLA_ARITHSQMAT3X3FLOAT_H__`
3		13
4	`#include "ExceptionStandard.h"`	14	`#include "ExceptionStandard.h"`
5	`#include "CGLA.h"`	15	`#include "CGLA.h"`
6	`#include "Vec3f.h"`	16	`#include "Vec3f.h"`
7	`#include "ArithSqMatFloat.h"`	17	`#include "ArithSqMatFloat.h"`
8		18
9	`namespace CGLA`	19	`namespace CGLA`
10	`{`	20	`{`
11		21
12	`CGLA_DERIVEEXCEPTION(Mat3x3fException)`	22	`CGLA_DERIVEEXCEPTION(Mat3x3fException)`
13	`CGLA_DERIVEEXCEPTION(Mat3x3fSingular)`	23	`CGLA_DERIVEEXCEPTION(Mat3x3fSingular)`
14		24
15	`/** \brief 3 by 3 float matrix template.`	25	`/** \brief 3 by 3 float matrix template.`
16		26
17	`This class template will typically be used for rotation or`	27	`This class template will typically be used for rotation or`
18	`scaling matrices for 3D vectors. */`	28	`scaling matrices for 3D vectors. */`
19	`template<class V, class M>`	29	`template<class V, class M>`
20	`class ArithSqMat3x3Float: public ArithSqMatFloat<V, M, 3>`	30	`class ArithSqMat3x3Float: public ArithSqMatFloat<V, M, 3>`
21	`{`	31	`{`
22	`public:`	32	`public:`
23		33
24	`/// Vector type`	34	`/// Vector type`
25	`typedef V VectorType;`	35	`typedef V VectorType;`
26		36
27	`/// The type of a matrix element`	37	`/// The type of a matrix element`
28	`typedef typename V::ScalarType ScalarType;`	38	`typedef typename V::ScalarType ScalarType;`
29		39
30	`public:`	40	`public:`
31		41
32	`/// Construct matrix from 3 Vec3f vectors.`	42	`/// Construct matrix from 3 Vec3f vectors.`
33	`ArithSqMat3x3Float(V _a, V _b, V _c):`	43	`ArithSqMat3x3Float(V _a, V _b, V _c):`
34	`ArithSqMatFloat<V, M, 3> (_a,_b,_c) {}`	44	`ArithSqMatFloat<V, M, 3> (_a,_b,_c) {}`
35		45
36	`/// Construct the 0 matrix`	46	`/// Construct the 0 matrix`
37	`ArithSqMat3x3Float() {}`	47	`ArithSqMat3x3Float() {}`
38		48
39	`/// Construct a matrix from a single scalar value.`	49	`/// Construct a matrix from a single scalar value.`
40	`explicit ArithSqMat3x3Float(ScalarType a):`	50	`explicit ArithSqMat3x3Float(ScalarType a):`
41	`ArithSqMatFloat<V, M, 3>(a) {}`	51	`ArithSqMatFloat<V, M, 3>(a) {}`
42		52
43	`};`	53	`};`
44		54
45	`/// Invert 3x3 matrix`	55	`/// Invert 3x3 matrix`
46	`template<class V, class M>`	56	`template<class V, class M>`
47	`M invert(const ArithSqMat3x3Float<V,M>&);`	57	`M invert(const ArithSqMat3x3Float<V,M>&);`
48		58
49	`/** Compute determinant. There is a more generic function for`	59	`/** Compute determinant. There is a more generic function for`
50	`computing determinants of square matrices (ArithSqMat). This one`	60	`computing determinants of square matrices (ArithSqMat). This one`
51	`is faster but works only on Mat3x3f */`	61	`is faster but works only on Mat3x3f */`
52	`template<class V, class M>`	62	`template<class V, class M>`
53	`inline`	63	`inline`
54	`typename ArithSqMat3x3Float<V,M>::ScalarType`	64	`typename ArithSqMat3x3Float<V,M>::ScalarType`
55	`determinant(const ArithSqMat3x3Float<V,M>& m)`	65	`determinant(const ArithSqMat3x3Float<V,M>& m)`
56	`{`	66	`{`
57	`return`	67	`return`
58	`m[0][0]m[1][1]m[2][2] +`	68	`m[0][0]m[1][1]m[2][2] +`
59	`m[0][1]m[1][2]m[2][0] +`	69	`m[0][1]m[1][2]m[2][0] +`
60	`m[0][2]m[1][0]m[2][1] -`	70	`m[0][2]m[1][0]m[2][1] -`
61	`m[0][2]m[1][1]m[2][0] -`	71	`m[0][2]m[1][1]m[2][0] -`
62	`m[0][0]m[1][2]m[2][1] -`	72	`m[0][0]m[1][2]m[2][1] -`
63	`m[0][1]m[1][0]m[2][2] ;`	73	`m[0][1]m[1][0]m[2][2] ;`
64	`}`	74	`}`
65		75
66		76
67	`}`	77	`}`
68	`#endif`	78	`#endif`
69		79
70		80
71		81
72		82
73		83
74		84
75		85
76		86

Subversion Repositories gelsvn

(root)/trunk/src/CGLA/ArithSqMat3x3Float.h – Rev 89 → 595