0c125f3a0d
git-svn-id: https://reactphysics3d.googlecode.com/svn/trunk@37 92aac97c-a6ce-11dd-a772-7fcde58d38e6
112 lines
6.1 KiB
C++
112 lines
6.1 KiB
C++
/****************************************************************************
|
|
* Copyright (C) 2009 Daniel Chappuis *
|
|
****************************************************************************
|
|
* This file is part of ReactPhysics3D. *
|
|
* *
|
|
* ReactPhysics3D is free software: you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation, either version 3 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* ReactPhysics3D is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>. *
|
|
***************************************************************************/
|
|
|
|
#ifndef MATRIX_H
|
|
#define MATRIX_H
|
|
|
|
// Libraries
|
|
#include "exceptions.h"
|
|
#include <stdexcept>
|
|
#include <iostream>
|
|
|
|
// ReactPhysics3D namespace
|
|
namespace reactphysics3d {
|
|
|
|
/* -------------------------------------------------------------------
|
|
Class Matrix :
|
|
This class represents a matrix.
|
|
-------------------------------------------------------------------
|
|
*/
|
|
class Matrix {
|
|
private :
|
|
int nbRow; // Number of row in the matrix
|
|
int nbColumn; // Number of colum in the matrix
|
|
double** array; // Dynamic array that contains the values of the matrix
|
|
|
|
public :
|
|
Matrix(int nbRow, int nbColum) throw(std::invalid_argument); // Constructor of the class Matrix
|
|
Matrix(const Matrix& matrix); // Copy constructor of the class Matrix
|
|
virtual ~Matrix(); // Destructor of the class Matrix
|
|
double getValue(int i, int j) const throw(std::invalid_argument); // Return a value in the matrix
|
|
void setValue(int i, int j, double value) throw(std::invalid_argument); // Set a value in the matrix
|
|
int getNbRow() const; // Return the number of row of the matrix
|
|
int getNbColumn() const; // Return the number of column of the matrix
|
|
Matrix getCofactor(int i, int j) const throw(std::invalid_argument); // Return the cofactor matrix by removing row i and column j
|
|
Matrix getTranspose() const; // Return the transposed matrixs
|
|
Matrix getInverse() const throw(MathematicsException); // Return the inverse of the matrix if there exists
|
|
double getDeterminant() const throw(MathematicsException); // Return the determinant of the matrix
|
|
double getTrace() const throw(MathematicsException); // Return the trace of a square matrix
|
|
static Matrix identity(int dimension) throw(std::invalid_argument); // Return the identity matrix I of the given dimension
|
|
|
|
void display() const; // TO DELETE
|
|
|
|
// --- Overloaded operators --- //
|
|
Matrix operator+(const Matrix& matrix2) const throw(MathematicsException); // Overloaded operator for addition
|
|
Matrix operator-(const Matrix& matrix2) const throw(MathematicsException); // Overloaded operator for substraction
|
|
Matrix operator*(double nb) const; // Overloaded operator for multiplication with a number
|
|
Matrix operator*(const Matrix& matrix2) const throw(MathematicsException); // Overloaded operator for multiplication with a matrix
|
|
Matrix& operator=(const Matrix& matrix2) throw(MathematicsException); // Overloaded operator for assignment
|
|
bool operator==(const Matrix& matrix2) const throw(MathematicsException); // Overloaded operator for equality condition
|
|
};
|
|
|
|
// Function to get a value in the matrix (inline)
|
|
inline double Matrix::getValue(int i, int j) const throw(std::invalid_argument) {
|
|
if (0 <= i && i < nbRow && 0 <= j && j < nbColumn) {
|
|
// get the value in the matrix
|
|
return array[i][j];
|
|
}
|
|
else {
|
|
// We Throw an out_of_range exception
|
|
throw std::invalid_argument("Exception : The index i or j is outside the matrix size !");
|
|
}
|
|
}
|
|
|
|
// Function to set a value in the matrix (inline)
|
|
inline void Matrix::setValue(int i, int j, double value) throw(std::invalid_argument) {
|
|
if (0 <= i && i < nbRow && 0 <= j && j < nbColumn) {
|
|
// Set the value in the matrix
|
|
this->array[i][j] = value;
|
|
}
|
|
else {
|
|
// We Throw an out_of_range exception
|
|
throw std::invalid_argument("Exception : The index i or j is outside the matrix size !");
|
|
}
|
|
}
|
|
|
|
// Function that return the number of row of the matrix (inline)
|
|
inline int Matrix::getNbRow() const {
|
|
return nbRow;
|
|
}
|
|
|
|
// Function that return the number of colum of the matrix (inline)
|
|
inline int Matrix::getNbColumn() const {
|
|
return nbColumn;
|
|
}
|
|
|
|
// Overloaded operator for multiplication between a number and a Matrix (inline)
|
|
inline Matrix operator*(double number, const Matrix& matrix) {
|
|
|
|
// Return the result matrix
|
|
return matrix * number;
|
|
}
|
|
|
|
} // End of the ReactPhysics3D namespace
|
|
|
|
#endif
|