HexahedralMeshIterators.hh

/*===========================================================================*\
 *                                                                           *
 *                            OpenVolumeMesh                                 *
 *        Copyright (C) 2011 by Computer Graphics Group, RWTH Aachen         *
 *                        www.openvolumemesh.org                             *
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/*===========================================================================*\
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 *   $Revision$                                                         *
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\*===========================================================================*/

#ifndef HEXAHEDRALMESHITERATORS_HH
#define HEXAHEDRALMESHITERATORS_HH

#include "../Core/Iterators.hh"
#include "OpenVolumeMesh/Config/Export.hh"

namespace OpenVolumeMesh {

class HexahedralMeshTopologyKernel;


class OVM_EXPORT CellSheetCellIter : public BaseCirculator<CellHandle, CellHandle> {
private:
    typedef BaseCirculator<CellHandle, CellHandle>    BaseIter;
public:
        CellSheetCellIter(const CellHandle& _ref_h, const unsigned char _orthDir,
            const HexahedralMeshTopologyKernel* _mesh, int _max_laps = 1);

        // Post increment/decrement operator
        CellSheetCellIter operator++(int) {
                CellSheetCellIter cpy = *this;
                ++(*this);
                return cpy;
        }
        CellSheetCellIter operator--(int) {
                CellSheetCellIter cpy = *this;
                --(*this);
                return cpy;
        }
        CellSheetCellIter operator+(int _n) {
                CellSheetCellIter cpy = *this;
                for(int i = 0; i < _n; ++i) {
                        ++cpy;
                }
                return cpy;
        }
        CellSheetCellIter operator-(int _n) {
                CellSheetCellIter cpy = *this;
                for(int i = 0; i < _n; ++i) {
                        --cpy;
                }
                return cpy;
        }
        CellSheetCellIter& operator+=(int _n) {
                for(int i = 0; i < _n; ++i) {
                        ++(*this);
                }
                return *this;
        }
        CellSheetCellIter& operator-=(int _n) {
                for(int i = 0; i < _n; ++i) {
                        --(*this);
                }
                return *this;
        }

        CellSheetCellIter& operator++();
        CellSheetCellIter& operator--();

private:
    std::vector<CellHandle> neighb_sheet_cell_hs_;
    size_t cur_index_;
};


class OVM_EXPORT HalfFaceSheetHalfFaceIter : public BaseCirculator<HalfFaceHandle,HalfFaceHandle> {
private:
    typedef BaseCirculator<HalfFaceHandle, HalfFaceHandle> BaseIter;
public:
        HalfFaceSheetHalfFaceIter(const HalfFaceHandle& _ref_h,
            const HexahedralMeshTopologyKernel* _mesh, int _max_laps = 1);

        // Post increment/decrement operator
        HalfFaceSheetHalfFaceIter operator++(int) {
                HalfFaceSheetHalfFaceIter cpy = *this;
                ++(*this);
                return cpy;
        }
        HalfFaceSheetHalfFaceIter operator--(int) {
                HalfFaceSheetHalfFaceIter cpy = *this;
                --(*this);
                return cpy;
        }
        HalfFaceSheetHalfFaceIter operator+(int _n) {
                HalfFaceSheetHalfFaceIter cpy = *this;
                for(int i = 0; i < _n; ++i) {
                        ++cpy;
                }
                return cpy;
        }
        HalfFaceSheetHalfFaceIter operator-(int _n) {
                HalfFaceSheetHalfFaceIter cpy = *this;
                for(int i = 0; i < _n; ++i) {
                        --cpy;
                }
                return cpy;
        }
        HalfFaceSheetHalfFaceIter& operator+=(int _n) {
                for(int i = 0; i < _n; ++i) {
                        ++(*this);
                }
                return *this;
        }
        HalfFaceSheetHalfFaceIter& operator-=(int _n) {
                for(int i = 0; i < _n; ++i) {
                        --(*this);
                }
                return *this;
        }

        HalfFaceSheetHalfFaceIter& operator++();
        HalfFaceSheetHalfFaceIter& operator--();

    const EdgeHandle& common_edge() const { return common_edges_[cur_index_]; }

private:
        std::vector<HalfFaceHandle> adjacent_halffaces_;
    std::vector<EdgeHandle> common_edges_;
    size_t cur_index_;
};

class OVM_EXPORT HexVertexIter : public BaseCirculator<CellHandle,
    VertexHandle> {
private:
    typedef BaseCirculator<CellHandle,
            VertexHandle> BaseIter;
public:
    HexVertexIter(const CellHandle& _ref_h,
                  const HexahedralMeshTopologyKernel* _mesh,
                  int _max_laps = 1);

    // Post increment/decrement operator
    HexVertexIter operator++(int) {
        HexVertexIter cpy = *this;
        ++(*this);
        return cpy;
    }
    HexVertexIter operator--(int) {
        HexVertexIter cpy = *this;
        --(*this);
        return cpy;
    }
    HexVertexIter operator+(int _n) {
        HexVertexIter cpy = *this;
        for(int i = 0; i < _n; ++i) {
            ++cpy;
        }
        return cpy;
    }
    HexVertexIter operator-(int _n) {
        HexVertexIter cpy = *this;
        for(int i = 0; i < _n; ++i) {
            --cpy;
        }
        return cpy;
    }
    HexVertexIter& operator+=(int _n) {
        for(int i = 0; i < _n; ++i) {
            ++(*this);
        }
        return *this;
    }
    HexVertexIter& operator-=(int _n) {
        for(int i = 0; i < _n; ++i) {
            --(*this);
        }
        return *this;
    }

    HexVertexIter& operator++();
    HexVertexIter& operator--();

private:
    std::vector<VertexHandle> vertices_;
    size_t cur_index_;
};

} // Namespace OpenVolumeMesh

#endif /* HEXAHEDRALMESHITERATORS_HH */