/* * * Template Numerical Toolkit (TNT) * * Mathematical and Computational Sciences Division * National Institute of Technology, * Gaithersburg, MD USA * * * This software was developed at the National Institute of Standards and * Technology (NIST) by employees of the Federal Government in the course * of their official duties. Pursuant to title 17 Section 105 of the * United States Code, this software is not subject to copyright protection * and is in the public domain. NIST assumes no responsibility whatsoever for * its use by other parties, and makes no guarantees, expressed or implied, * about its quality, reliability, or any other characteristic. * */ #ifndef TNT_ARRAY3D_H #define TNT_ARRAY3D_H #include <cstdlib> #include <iostream> #ifdef TNT_BOUNDS_CHECK #include <assert.h> #endif #include "tnt_array1d.h" #include "tnt_array2d.h" namespace TNT { template <class T> class Array3D { private: Array1D<T> data_; Array2D<T*> v_; int m_; int n_; int g_; public: typedef T value_type; Array3D(); Array3D(int m, int n, int g); Array3D(int m, int n, int g, T val); Array3D(int m, int n, int g, T *a); inline operator T***(); inline operator const T***(); inline Array3D(const Array3D &A); inline Array3D & operator=(const T &a); inline Array3D & operator=(const Array3D &A); inline Array3D & ref(const Array3D &A); Array3D copy() const; Array3D & inject(const Array3D & A); inline T** operator[](int i); inline const T* const * operator[](int i) const; inline int dim1() const; inline int dim2() const; inline int dim3() const; ~Array3D(); /* extended interface */ inline int ref_count(){ return data_.ref_count(); } Array3D subarray(int i0, int i1, int j0, int j1, int k0, int k1); }; template <class T> Array3D<T>::Array3D() : data_(), v_(), m_(0), n_(0) {} template <class T> Array3D<T>::Array3D(const Array3D<T> &A) : data_(A.data_), v_(A.v_), m_(A.m_), n_(A.n_), g_(A.g_) { } template <class T> Array3D<T>::Array3D(int m, int n, int g) : data_(m*n*g), v_(m,n), m_(m), n_(n), g_(g) { if (m>0 && n>0 && g>0) { T* p = & (data_[0]); int ng = n_*g_; for (int i=0; i<m_; i++) { T* ping = p+ i*ng; for (int j=0; j<n; j++) v_[i][j] = ping + j*g_; } } } template <class T> Array3D<T>::Array3D(int m, int n, int g, T val) : data_(m*n*g, val), v_(m,n), m_(m), n_(n), g_(g) { if (m>0 && n>0 && g>0) { T* p = & (data_[0]); int ng = n_*g_; for (int i=0; i<m_; i++) { T* ping = p+ i*ng; for (int j=0; j<n; j++) v_[i][j] = ping + j*g_; } } } template <class T> Array3D<T>::Array3D(int m, int n, int g, T* a) : data_(m*n*g, a), v_(m,n), m_(m), n_(n), g_(g) { if (m>0 && n>0 && g>0) { T* p = & (data_[0]); int ng = n_*g_; for (int i=0; i<m_; i++) { T* ping = p+ i*ng; for (int j=0; j<n; j++) v_[i][j] = ping + j*g_; } } } template <class T> inline T** Array3D<T>::operator[](int i) { #ifdef TNT_BOUNDS_CHECK assert(i >= 0); assert(i < m_); #endif return v_[i]; } template <class T> inline const T* const * Array3D<T>::operator[](int i) const { return v_[i]; } template <class T> Array3D<T> & Array3D<T>::operator=(const T &a) { for (int i=0; i<m_; i++) for (int j=0; j<n_; j++) for (int k=0; k<g_; k++) v_[i][j][k] = a; return *this; } template <class T> Array3D<T> Array3D<T>::copy() const { Array3D A(m_, n_, g_); for (int i=0; i<m_; i++) for (int j=0; j<n_; j++) for (int k=0; k<g_; k++) A.v_[i][j][k] = v_[i][j][k]; return A; } template <class T> Array3D<T> & Array3D<T>::inject(const Array3D &A) { if (A.m_ == m_ && A.n_ == n_ && A.g_ == g_) for (int i=0; i<m_; i++) for (int j=0; j<n_; j++) for (int k=0; k<g_; k++) v_[i][j][k] = A.v_[i][j][k]; return *this; } template <class T> Array3D<T> & Array3D<T>::ref(const Array3D<T> &A) { if (this != &A) { m_ = A.m_; n_ = A.n_; g_ = A.g_; v_ = A.v_; data_ = A.data_; } return *this; } template <class T> Array3D<T> & Array3D<T>::operator=(const Array3D<T> &A) { return ref(A); } template <class T> inline int Array3D<T>::dim1() const { return m_; } template <class T> inline int Array3D<T>::dim2() const { return n_; } template <class T> inline int Array3D<T>::dim3() const { return g_; } template <class T> Array3D<T>::~Array3D() {} template <class T> inline Array3D<T>::operator T***() { return v_; } template <class T> inline Array3D<T>::operator const T***() { return v_; } /* extended interface */ template <class T> Array3D<T> Array3D<T>::subarray(int i0, int i1, int j0, int j1, int k0, int k1) { /* check that ranges are valid. */ if (!( 0 <= i0 && i0 <= i1 && i1 < m_ && 0 <= j0 && j0 <= j1 && j1 < n_ && 0 <= k0 && k0 <= k1 && k1 < g_)) return Array3D<T>(); /* null array */ Array3D<T> A; A.data_ = data_; A.m_ = i1-i0+1; A.n_ = j1-j0+1; A.g_ = k1-k0+1; A.v_ = Array2D<T*>(A.m_,A.n_); T* p = &(data_[0]) + i0*n_*g_ + j0*g_ + k0; for (int i=0; i<A.m_; i++) { T* ping = p + i*n_*g_; for (int j=0; j<A.n_; j++) A.v_[i][j] = ping + j*g_ ; } return A; } } /* namespace TNT */ #endif /* TNT_ARRAY3D_H */