Matrix.hpp

00001 //------------------------------------------------------------------------------
00002 //  Generic 2-dimensional array class ---- Matrix
00003 //
00004 //  2016/05/22, Copyright (c) 2016 MIKAMI, Naoki
00005 //------------------------------------------------------------------------------
00006 
00007 #ifndef MIKAMI_MATRIX_HPP
00008 #define MIKAMI_MATRIX_HPP
00009 
00010 #include "Array.hpp"
00011 
00012 namespace Mikami
00013 {
00014     template <class T> class Matrix
00015     {
00016     public:
00017         explicit Matrix(int rows = 1, int cols = 1);
00018         Matrix(int rows, int cols, T initialValue);
00019         void Fill(T val);
00020         void SetSize(int rows, int cols);                           // setting size
00021         Array<T>& operator[](int i) { return vv_[i]; }              // assign by element
00022         const Array<T>& operator[](int i) const { return vv_[i]; }  //get element
00023         int Rows() const { return vv_.Length(); }
00024         int Cols() const { return vv_[0].Length(); }
00025     private:
00026         Array< Array<T> > vv_;
00027     };
00028 
00029 //-----------------------------------------------------------------------
00030 // implementation of generic 2-dimensional array class
00031 //-----------------------------------------------------------------------
00032     template <class T> Matrix<T>::Matrix(int rows, int cols): vv_(rows)
00033     {
00034         Array<T> a(cols);
00035         for (int i=0; i<rows; i++) vv_[i] = a;
00036     }
00037 
00038     template <class T> Matrix<T>::Matrix(int rows, int cols, T initialValue)
00039             : vv_(rows)
00040     {
00041         Array<T> a(cols, initialValue);
00042         for (int i=0; i<rows; i++) vv_[i] = a;
00043     }
00044 
00045     template <class T> void Matrix<T>::Fill(T val)
00046     {
00047         for (int n=0; n<Rows(); n++) vv_[n].Fill(val);
00048     }
00049 
00050     template <class T> void Matrix<T>::SetSize(int rows, int cols)
00051     {
00052         Array<T> a(cols);
00053         vv_.SetSize(rows);
00054         for (int i=0; i<rows; i++) vv_[i] = a;
00055     }
00056 }
00057 #endif  // MIKAMI_MATRIX_HPP
00058