forked from lijiext/lammps
84 lines
3.3 KiB
C
84 lines
3.3 KiB
C
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/*
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*_________________________________________________________________________*
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* POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE *
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* DESCRIPTION: SEE READ-ME *
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* FILE NAME: mat3x3.h *
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* AUTHORS: See Author List *
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* GRANTS: See Grants List *
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* COPYRIGHT: (C) 2005 by Authors as listed in Author's List *
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* LICENSE: Please see License Agreement *
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* DOWNLOAD: Free at www.rpi.edu/~anderk5 *
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* ADMINISTRATOR: Prof. Kurt Anderson *
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* Computational Dynamics Lab *
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* Rensselaer Polytechnic Institute *
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* 110 8th St. Troy NY 12180 *
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* CONTACT: anderk5@rpi.edu *
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*_________________________________________________________________________*/
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#ifndef MAT3X3_H
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#define MAT3X3_H
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#include "virtualmatrix.h"
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class Vect3;
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class Mat6x6;
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class Matrix;
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class ColMatrix;
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class Mat3x3 : public VirtualMatrix {
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double elements[3][3];
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public:
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Mat3x3();
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~Mat3x3();
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Mat3x3(const Mat3x3& A); // copy constructor
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Mat3x3(const VirtualMatrix& A); // copy constructor
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double& operator_2int (int i, int j); // array access
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double Get_2int(int i, int j) const;
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void Set_2int(int i, int j, double value);
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double BasicGet_2int(int i, int j) const;
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void BasicSet_2int(int i, int j, double value);
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void BasicIncrement_2int(int i, int j, double value);
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void Const(double value);
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MatrixType GetType() const;
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std::istream& ReadData(std::istream& c); // input
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std::ostream& WriteData(std::ostream& c) const; // output
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void AssignVM(const VirtualMatrix& A);
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Mat3x3& operator=(const Mat3x3& A); // assignment operator
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Mat3x3& operator=(const VirtualMatrix& A); // overloaded =
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Mat3x3& operator*=(double b);
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Mat3x3& Identity();
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friend Mat3x3 T(const Mat3x3& A); // a wasteful transpose
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friend Mat3x3 CrossMat(Vect3& a); // a wasteful cross matrix implementation
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friend void FastSimpleRotation(Vect3& v, double q, Mat3x3& d);
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friend void FastQuaternions(ColMatrix& q, Mat3x3& C);
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friend void FastInvQuaternions(Mat3x3& C, ColMatrix& q);
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friend void FastLU(Mat3x3& A, Mat3x3& LU, int *indx);
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friend void FastLUSubs(Mat3x3& LU, Mat3x3& B, Mat3x3& C, int *indx);
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friend void FastMult(Mat3x3& A, Vect3& B, Vect3& C);
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friend void FastTMult(Mat3x3& A, Vect3& B, Vect3& C);
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friend void FastNegMult(Mat3x3& A, Vect3& B, Vect3& C);
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friend void FastNegTMult(Mat3x3& A, Vect3& B, Vect3& C);
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friend void FastMult(Mat3x3& A, Mat3x3& B, Mat3x3& C);
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friend void FastMultT(Mat3x3& A, Mat3x3& B, Mat3x3& C);
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friend void FastAssignT(Mat3x3& A, Mat3x3& C);
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friend void FastMult(Mat3x3& A, Vect3& B, ColMatrix& C);
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friend void OnPopulateSC(Vect3& gamma, Mat3x3& C, Mat6x6& SC);
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friend void OnPopulateSI(Mat3x3& inertia, double mass, Mat6x6& sI);
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friend void FastMult(Mat3x3& A, ColMatrix& B, Vect3& C);
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friend void EP_Transformation(ColMatrix& q, Mat3x3& C);
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friend void EP_FromTransformation(ColMatrix& q, Mat3x3& C);
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};
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#endif
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