use from Ernesto Palacios
Dependents: RoboticArm DXL_SDK_Porting_Test
Fork of Matrix by
Diff: Matrix.cpp
- Revision:
- 2:493402568a5e
- Parent:
- 1:48f417da268e
- Child:
- 3:589fb80932b5
--- a/Matrix.cpp Mon Sep 26 03:23:35 2011 +0000 +++ b/Matrix.cpp Thu Oct 20 23:42:13 2011 +0000 @@ -1,152 +1,60 @@ +/** + * @file: Matrix.cpp + * @author: Ernesto Palacios + * @brief: Source Code for the Matrix Class. + * + * Created on September 2011. + * + */ + #include "mbed.h" #include "Matrix.h" - /// Rows by Cols Matrix Constructor -Matrix::Matrix(int Rows, int Cols): _nCols(Cols), _nRows(Rows) +Matrix::Matrix(int Rows, int Cols): _nRows(Rows), _nCols(Cols) { _matrix.resize(_nRows); for( int i = 0; i < _nRows; i++ ) _matrix[i].resize(_nCols); + + _pRow = 0; + _pCol = 0; + + this->Clear(); //Make all elements zero by default. } -/// Defines the same parameters as 'base' Matrix -Matrix::Matrix(const Matrix &base): _nCols(base._nCols), _nRows(base._nRows) +/// Copies one matrix into a new one +Matrix::Matrix(const Matrix& base) { + _nCols = base._nCols; + _nRows = base._nRows; + + _pRow = base._pRow; + _pCol = base._pCol; + _matrix.resize(_nRows); for( int i = 0; i < _nRows; i++ ) _matrix[i].resize(_nCols); -} - -/// Square Matrix Constructor -Matrix::Matrix(int square): _nCols(square), _nRows(square) -{ - _matrix.resize(_nRows); for( int i = 0; i < _nRows; i++ ) - _matrix[i].resize(_nCols); + for( int j = 0; j < _nCols; j++ ) + _matrix[i][j] = base._matrix[i][j]; } /// Default Constructor -Matrix::Matrix(){/*Intentionally left Blank*/} - - -/************************************************************************/ - - -/// Overloaded Asign Operator. Resizes Matrix -Matrix& Matrix::operator = ( const Matrix &rightM ) +Matrix::Matrix() { - if( *this != rightM ) - { - this->_nRows = rightM._nRows; - this->_nCols = rightM._nCols; - - this->_matrix.resize( rightM._nRows ); - for( int i = 0; i < rightM._nRows; i++ ) - this->_matrix [i].resize(rightM._nCols); - - for( int i = 0; i < _nRows; i++ ) - for( int j = 0; j < _nCols; j++ ) - this->_matrix[i][j] = rightM._matrix[i][j]; - - return *this; - - }else{ + _nCols = 0; + _nRows = 0; - Matrix ret (*this); - return ret; - } -} - -/// Comapre element by element -bool Matrix::operator == ( const Matrix& rightM ) -{ - if( _nRows == rightM._nRows && _nCols == rightM._nCols ) - { - bool equal = false; - - for( int i = 0; i < _nRows; i++ ) - for( int j = 0; j < _nCols; j++ ) - if( _matrix[i][j] != rightM._matrix[i][j] ) - equal = equal || true; - - return !equal; - - }else{ return false; } -} - - -/// Calls for '==' operator -bool Matrix::operator != ( const Matrix &rightM ) -{ - return !( *this == rightM ); + _pRow = 0; + _pCol = 0; + } - -/// Matrices must be same size. -/// Element by element adition. -Matrix& Matrix::operator +=(const Matrix& rightM) -{ - if( _nRows == rightM._nRows && _nCols == rightM._nCols ) - { - for( int i = 0; i < _nRows; i++ ) - for( int j = 0; j < _nCols; j++ ) - _matrix[i][j] += rightM._matrix[i][j]; - - return *this; - - }else{ - printf( "\n\nERROR\nDiferent Dimensions @ += \n" ); - // Matrix error(4); - // error.Clear(); - // return error; - } -} - - -/// Matrices must be same size. -/// Element by element Substraction -Matrix& Matrix::operator -=(const Matrix& rightM) -{ - if( _nRows == rightM._nRows && _nCols == rightM._nCols ) - { - for( int i = 0; i < _nRows; i++ ) - for( int j = 0; j < _nCols; j++ ) - _matrix[i][j] -= rightM._matrix[i][j]; - - return *this; - - }else{ - printf( "\n\nERROR\nDiferent Dimensions @ -= \n" ); - //Matrix error(4); - //error.Clear(); - //return error; - } -} - - -/// Element by element Adition. Must be same sizes -const Matrix Matrix::operator +(const Matrix& rightM) -{ - Matrix result = *this; - result += rightM; - return result; -} - - -/// Element by element Substraction. Must be same sizes -const Matrix Matrix::operator -(const Matrix& rightM) -{ - Matrix result = *this; - result -= rightM; - return result; -} - -/************************************************************************/ - +/***********************************************************************/ /// Returns true if matrix is full of zeros bool Matrix::isZero() @@ -154,7 +62,7 @@ bool zero = false; for( int i = 0; i < this->_nRows; i++ ) for( int j = 0; j < this->_nCols; j++ ) - if( this->_matrix[i][j] != 0 ) + if( _matrix[i][j] != 0 ) zero = zero || true; return !zero; } @@ -163,7 +71,7 @@ /// Returns true if Matrix is Single Row ot Single Column. bool Matrix::isVector() { - if( this->_nRows == 1 || this->_nCols == 1 ) + if( _nRows == 1 || _nCols == 1 ) return true; else return false; @@ -172,27 +80,30 @@ /*************************************************************************/ /// Returns all elements in Matrix as a single Row vector. -Matrix Matrix::ToPackedVector() +const Matrix Matrix::ToPackedVector( const Matrix& Mat ) { - Matrix Shattered( ( this->_nRows * this->_nCols ) , 1 ); + + Matrix Crushed( 1, Mat._nRows * Mat._nCols ); int cont = 0; - for( int i = 0; i < this->_nRows; i++ ) - { - for( int j = 0; j < this->_nCols; j++ ) + + for( int i = 0; i < Mat._nRows; i++ ) + for( int j = 0; j < Mat._nCols; j++ ) { - Shattered._matrix[0][cont] = this->_matrix[i][j]; + Crushed._matrix[0][cont] = Mat._matrix[i][j]; cont++; } - } - return Shattered; + Crushed._pRow = Crushed._nRows; + Crushed._pCol = Crushed._nCols; + + return Crushed; } -/***************************************************************************/ + /// Test elment-by-element. Prints detailed error. -bool Matrix::Equals( const Matrix mat1, const Matrix mat2 ) +bool Matrix::Equals( const Matrix& mat1, const Matrix& mat2 ) { if( mat1._nCols == mat2._nCols && mat1._nRows == mat2._nRows ) { @@ -214,39 +125,7 @@ } -/// To Implicitly create a Single Column Matrix. -Matrix Matrix::CreateColumnMatrix(int Cols) -{ - Matrix ColMatrix(1,Cols); - return ColMatrix; -} - - -/// To Implicitly create a Single Row Matrix. -Matrix Matrix::CreateRowMatrix(int Rows) -{ - Matrix RowMatrix( Rows, 1); - return RowMatrix; -} - - -/// To implicitly Clone a Matrix. Although '=' works the same. -void Matrix::Clone( const Matrix &Source, Matrix &Receip ) -{ - Receip._nCols = Source._nCols; - Receip._nRows = Source._nRows; - - Receip._matrix.resize(Receip._nRows); - for( int i = 0; i < Receip._nRows; i++ ) - Receip._matrix[i].resize(Receip._nCols); - - for( int i = 0; i < Receip._nRows; i++ ) - for( int j = 0; j < Receip._nCols; j++ ) - Receip._matrix[i][j] = Source._matrix[i][j]; -} - - -/// To add (Insert) a Single Row to a Matrix. +/// To add (Insert) a Single Row to a Matrix. void Matrix::AddRow(Matrix& Mat, int Row) { --Row; @@ -254,7 +133,7 @@ if( Row > Mat._nRows + 1) { printf("\n\nERROR:\nRow out of Limits @ AddRow()\n"); - + }else{ Mat._nRows++; @@ -273,14 +152,14 @@ /// To add (Insert) a single Column to a Matrix -void Matrix::AddColumn( Matrix &Mat, int Col ) +void Matrix::AddColumn( Matrix& Mat, int Col ) { --Col; if( Col > Mat._nCols + 1 ) { printf("\n\nERROR:\nRow out of Limits on AddCol()\n"); - + }else{ @@ -300,20 +179,25 @@ /// Delete a Single Column From Matrix. -void Matrix::DeleteCol( Matrix &Mat, int Col) +void Matrix::DeleteCol( Matrix& Mat, int Col) { --Col; // Because of Column zero. if( Col > Mat._nCols ) { printf("\n\nERROR:\nColumn out of Limits @ DeleteCol()\n"); - + }else{ for( int i = 0; i < Mat._nRows; i++ ) for( int j = Col; j < Mat._nCols; j++ ) Mat._matrix[i][j] = Mat._matrix[i][j+1]; + // If adressing last element of Column, + // wich no longer exists + if( Mat._pCol == Mat._nCols ) + Mat._pCol--; + // Decrease one column Mat._nCols--; @@ -333,11 +217,11 @@ if( Row > Mat._nRows ) { printf("\n\nERROR:\nColumn out of Limits @ DeleteCol()\n"); - + }else{ for( int i = Row; i < Mat._nRows - 1; i++ ) - + for( int j = 0; j < Mat._nCols; j++ ) Mat._matrix[i][j] = Mat._matrix[i+1][j]; Mat._nRows--; @@ -348,41 +232,50 @@ /*****************************************************************************************/ /// Extracts a single row form calling matrix and saves it to another matrix. -void Matrix::ExportRow( int Row, Matrix &Mat ) +const Matrix Matrix::ExportRow( const Matrix& Mat, int row ) { - --Row; + --row; - if( Row > this->_nRows ) + if( row > Mat._nRows ) { - printf( "\n\nWARNING: Row out of dimmensions @ GetRow\n" + printf( "\n\nERROR:\nRow out of dimmensions @ GetRow\n" "Nothing Done.\n\n" ); }else{ - Matrix SingleRow( 1 , this->_nCols ); + Matrix SingleRow( 1 , Mat._nCols ); SingleRow.Clear(); - for( int j = 0; j < this->_nCols; j++ ) - SingleRow._matrix[0][j] = this->_matrix[Row][j]; - - Mat = SingleRow; + for( int j = 0; j < Mat._nCols; j++ ) + SingleRow._matrix[0][j] = Mat._matrix[row][j]; + + SingleRow._pCol = SingleRow._nCols; + SingleRow._pRow = 0; + + return SingleRow; } } /// Extracts a single column form calling matrix and saves it to another matrix. -void Matrix::ExportCol( int Col, Matrix &Mat ) +const Matrix Matrix::ExportCol( const Matrix& Mat, int col ) { - if( Col > this->_nCols ) + --col; + + if( col > Mat._nCols ) { - printf( "\n\nWARNING:\nCol out of dimmensions.\n" + printf( "\n\nERROR:\nColumn out of dimmensions.\n" "Nothing Done.\n\n" ); }else{ - Matrix SingleCol( this->_nRows, 1 ); - for(int i = 0; i < this->_nRows; i++ ) - SingleCol._matrix[i][0] = this->_matrix[i][Col]; - Mat = SingleCol; + Matrix SingleCol( Mat._nRows, 1 ); + for(int i = 0; i < Mat._nRows; i++ ) + SingleCol._matrix[i][0] = Mat._matrix[i][col]; + + SingleCol._pCol = 0; + SingleCol._pRow = SingleCol._nRows; + + return SingleCol; } } @@ -390,12 +283,16 @@ /// Makes matrix Bigger! void Matrix::Resize( int Rows, int Cols ) { - this->_nRows = Rows; - this->_nCols = Cols; - this->_matrix.resize( _nRows ); - + _nRows = Rows; //Decreases one because internally + _nCols = Cols; // Index starts at zero. + + _matrix.resize( _nRows ); + for( int i = 0; i< _nRows ; i++ ) _matrix[i].resize(_nCols); + + _pRow = 0; // If matrix is resized the << + _pCol = 0; // operator overwrites everything! } @@ -415,6 +312,9 @@ printf("\n"); } printf("\n"); + + _pRow = _nRows; + _pCol = _nCols; } @@ -439,19 +339,23 @@ for( int i = 0; i < _nRows; i++ ) for( int j = 0; j < _nCols; j++ ) _matrix[i][j] = 0; + + _pCol = 0; // New data can be added + _pRow = 0; } /********************************************************************************/ + /// Inserts a Single element in a desired Position( Index starts at [1][1] ); void Matrix::add(int Row, int Col, float number) { --Col; --Row; - + if( Row > _nRows || Col > _nCols ) { printf("\n\nERROR:\nOut of limits of Matrix @ mat.Add()"); - + }else{ _matrix[Row][Col] = number; } @@ -479,4 +383,4 @@ /// Returns the number of Columns in Matrix. -int Matrix::getCols(){ return this->_nCols; } +int Matrix::getCols(){ return this->_nCols; } \ No newline at end of file