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mat4x4.h
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Wed, Sep 4, 02:30
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rLAMMPS lammps
mat4x4.h
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/*
*_________________________________________________________________________*
* POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE *
* DESCRIPTION: SEE READ-ME *
* FILE NAME: mat4x4.h *
* AUTHORS: See Author List *
* GRANTS: See Grants List *
* COPYRIGHT: (C) 2005 by Authors as listed in Author's List *
* LICENSE: Please see License Agreement *
* DOWNLOAD: Free at www.rpi.edu/~anderk5 *
* ADMINISTRATOR: Prof. Kurt Anderson *
* Computational Dynamics Lab *
* Rensselaer Polytechnic Institute *
* 110 8th St. Troy NY 12180 *
* CONTACT: anderk5@rpi.edu *
*_________________________________________________________________________*/
#ifndef MAT4X4_H
#define MAT4X4_H
#include "virtualmatrix.h"
#include "matrix.h"
class
Vect4
;
class
Mat4x4
:
public
VirtualMatrix
{
double
elements
[
4
][
4
];
public:
Mat4x4
();
~
Mat4x4
();
Mat4x4
(
const
Mat4x4
&
A
);
// copy constructor
Mat4x4
(
const
VirtualMatrix
&
A
);
// copy constructor
double
&
operator_2int
(
int
i
,
int
j
);
// array access
double
Get_2int
(
int
i
,
int
j
)
const
;
void
Set_2int
(
int
i
,
int
j
,
double
value
);
double
BasicGet_2int
(
int
i
,
int
j
)
const
;
void
BasicSet_2int
(
int
i
,
int
j
,
double
value
);
void
BasicIncrement_2int
(
int
i
,
int
j
,
double
value
);
void
Const
(
double
value
);
MatrixType
GetType
()
const
;
std
::
istream
&
ReadData
(
std
::
istream
&
c
);
// input
std
::
ostream
&
WriteData
(
std
::
ostream
&
c
)
const
;
// output
void
AssignVM
(
const
VirtualMatrix
&
A
);
Mat4x4
&
operator
=
(
const
Mat4x4
&
A
);
// assignment operator
Mat4x4
&
operator
=
(
const
VirtualMatrix
&
A
);
// overloaded =
Mat4x4
&
operator
*=
(
double
b
);
Mat4x4
&
Identity
();
friend
Mat4x4
T
(
const
Mat4x4
&
A
);
// a wasteful transpose
friend
Mat4x4
CrossMat
(
Vect4
&
a
);
// a wasteful cross matrix implementation
friend
void
FastLU
(
Mat4x4
&
A
,
Mat4x4
&
LU
,
int
*
indx
);
friend
void
FastLUSubs
(
Mat4x4
&
LU
,
Matrix
&
B
,
Matrix
&
C
,
int
*
indx
);
friend
void
FastMult
(
Mat4x4
&
A
,
Vect4
&
B
,
Vect4
&
C
);
friend
void
FastTMult
(
Mat4x4
&
A
,
Vect4
&
B
,
Vect4
&
C
);
friend
void
FastNegMult
(
Mat4x4
&
A
,
Vect4
&
B
,
Vect4
&
C
);
friend
void
FastNegTMult
(
Mat4x4
&
A
,
Vect4
&
B
,
Vect4
&
C
);
friend
void
FastMult
(
Mat4x4
&
A
,
Mat4x4
&
B
,
Mat4x4
&
C
);
friend
void
FastMultT
(
Mat4x4
&
A
,
Mat4x4
&
B
,
Mat4x4
&
C
);
friend
void
FastAssignT
(
Mat4x4
&
A
,
Mat4x4
&
C
);
};
#endif
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