opencv基本操作(三)

来源：互联网发布：mysql saas 编辑：程序博客网时间：2024/04/19 23:27
经常要遍历整个矩阵,还是写个工具链来辅助访问吧
#ifndef LINESITERATOR_HPP_0x000001#define LINESITERATOR_HPP_0x000001#include <cplusplus_basic.hpp>namespace _pns_private {namespace _pns_opencv_utility {template<bool> class BasicLinesIterator;template<>class BasicLinesIterator<false> {protected:    typedef unsigned char *_p_data_t;    typedef int _p_int_t;    _p_data_t _mp_begin_pointer;    _p_data_t _mp_current_pointer;    _p_data_t _mp_end_pointer;    _p_int_t _mp_step;public:    typedef float float32_type;    typedef double float64_type;    static_assert(sizeof(float64_type)==8,"");    static_assert(sizeof(float32_type)==4,"");    BasicLinesIterator():        _mp_begin_pointer(nullptr),        _mp_current_pointer(nullptr),        _mp_end_pointer(nullptr),        _mp_step(0){}    BasicLinesIterator(            const _p_data_t begin_arg,            _p_int_t line_size_arg,            _p_int_t step_arg):        _mp_begin_pointer(const_cast<_p_data_t>(begin_arg)),        _mp_current_pointer(const_cast<_p_data_t>(begin_arg)),        _mp_end_pointer(const_cast<_p_data_t>(begin_arg)                        +(line_size_arg*step_arg)),        _mp_step(step_arg) {    }    void goNext() {        _mp_current_pointer+=_mp_step;    }    void goPrevious() {        _mp_current_pointer-=_mp_step;    }    void goNext(_p_int_t arg) {        _mp_current_pointer+=_mp_step*arg;    }    void goPrevious(_p_int_t arg) {        _mp_current_pointer-=_mp_step*arg;    }    void goFirst() {        _mp_current_pointer=_mp_begin_pointer;    }    void goLast() {        _mp_current_pointer=_mp_end_pointer;    }};template<>class BasicLinesIterator<true> :public BasicLinesIterator<false> {    using _Super=BasicLinesIterator<false>;protected:    _p_int_t _mp_current_line;    _p_int_t _mp_lines_count;public:    BasicLinesIterator():        _mp_current_line(0),        _mp_lines_count(0){}    BasicLinesIterator(const _p_data_t begin_arg,                       _p_int_t line_size_arg,                       _p_int_t step_arg):        _Super(begin_arg,line_size_arg,step_arg),        _mp_current_line(0),        _mp_lines_count(line_size_arg) {    }    _p_int_t lineCount() const { return this->_mp_lines_count; }    _p_int_t currentLineNumber() const { return this->_mp_current_line; }    void goNext() {        _mp_current_pointer+=_mp_step;        ++_mp_current_line;    }    void goPrevious() {        _mp_current_pointer-=_mp_step;        --_mp_current_line;    }    void goNext(_p_int_t arg) {        _mp_current_pointer+=_mp_step*arg;        _mp_current_line+=arg;    }    void goPrevious(_p_int_t arg) {        _mp_current_pointer-=_mp_step*arg;        _mp_current_line-=arg;    }    void goFirst() {        _mp_current_pointer=_mp_begin_pointer;        _mp_current_line=0;    }    void goLast() {        _mp_current_pointer=_mp_end_pointer;        _mp_current_line=_mp_lines_count;    }};template<bool _HasLineNumber_=false>class LinesIterator : public BasicLinesIterator<_HasLineNumber_> {    using _Super=BasicLinesIterator<_HasLineNumber_>;    using typename _Super::_p_data_t;    using typename _Super::_p_int_t;public:    LinesIterator()=default;    LinesIterator(const _p_data_t begin_arg,                  _p_int_t line_size_arg,                  _p_int_t step_arg)        :_Super(begin_arg,line_size_arg,step_arg) {    }    _p_int_t step()const { return this->_mp_step; }    template<typename _T_>    _T_ * firstLine() {        return reinterpret_cast<_T_ *>(this->_mp_begin_pointer);    }    template<typename _T_>    const _T_ * firstLine()const {        return reinterpret_cast<const _T_ *>(this->_mp_begin_pointer);    }    template<typename _T_>    _T_ * lastLine() {        return reinterpret_cast<_T_ *>(this->_mp_end_pointer);    }    template<typename _T_>    const _T_ * lastLine()const {        return reinterpret_cast<const _T_ *>(this->_mp_end_pointer);    }    template<typename _T_>    _T_* currentLine() {        return reinterpret_cast<_T_*>(this->_mp_current_pointer);    }    template<typename _T_>    const _T_* currentLine() const {        return reinterpret_cast<const _T_*>(this->_mp_current_pointer);    }    template<typename _T_>    _T_* nextLine() {        return reinterpret_cast<_T_*>(this->_mp_current_pointer+this->_mp_step);    }    template<typename _T_>    const _T_* nextLine()const {        return reinterpret_cast<const _T_*>(this->_mp_current_pointer+this->_mp_step);    }    template<typename _T_>    _T_* previousLine() {        return reinterpret_cast<_T_*>(this->_mp_current_pointer-this->_mp_step);    }    template<typename _T_>    const _T_* previousLine()const {        return reinterpret_cast<const _T_*>(this->_mp_current_pointer-this->_mp_step);    }    template<typename _T_>    _T_* nextLine(_p_int_t arg) {        return reinterpret_cast<_T_*>(this->_mp_current_pointer+arg*this->_mp_step);    }    template<typename _T_>    const _T_* nextLine(_p_int_t arg)const {        return reinterpret_cast<const _T_*>(this->_mp_current_pointer+arg*this->_mp_step);    }    template<typename _T_>    _T_* previousLine(_p_int_t arg) {        return reinterpret_cast<_T_*>(this->_mp_current_pointer-arg*this->_mp_step);    }    template<typename _T_>    const _T_* previousLine(int arg)const {        return reinterpret_cast<const _T_*>(this->_mp_current_pointer-arg*this->_mp_step);    }    bool isFinePointer(const void *arg) const {        return (arg<static_cast<const void *>(this->_mp_end_pointer))&&                (static_cast<const void*>(this->_mp_begin_pointer)<=arg);    }    operator bool() const {        return this->_mp_current_pointer<this->_mp_end_pointer;    }    bool isFinePointer() const {        return (this->_mp_current_pointer<this->_mp_end_pointer)&&                (this->_mp_begin_pointer<=this->_mp_current_pointer);    }private:    CPLUSPLUS_OBJECT(LinesIterator)};extern template class LinesIterator<true>;extern template class LinesIterator<false>;}/*_pns_opencv_utility*/}/*_pns_private*/using _pns_private::_pns_opencv_utility::LinesIterator;#endif // LINESITERATOR_HPP
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