cellMapper.hpp

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/*------------------------------- phasicFlow ---------------------------------
      O        C enter of
     O O       E ngineering and
    O   O      M ultiscale modeling of
   OOOOOOO     F luid flow       
------------------------------------------------------------------------------
  Copyright (C): www.cemf.ir
  email: hamid.r.norouzi AT gmail.com
------------------------------------------------------------------------------  
Licence:
  This file is part of phasicFlow code. It is a free software for simulating 
  granular and multiphase flows. You can redistribute it and/or modify it under
  the terms of GNU General Public License v3 or any other later versions. 
 
  phasicFlow is distributed to help others in their research in the field of 
  granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
-----------------------------------------------------------------------------*/
 
 
#ifndef __cellMapper_hpp__
#define __cellMapper_hpp__
 
#include "phasicFlowKokkos.hpp"
#include "pointFlag.hpp"
#include "rectangleMesh.hpp"
 
 
namespace pFlow
{
 
class cellMapper
{
public:
 
    using HeadType          = hostViewType3D<uint32>;
 
    using NextType          = hostViewType1D<uint32>;   
 
    
    static constexpr uint32 NoPos   = 0xFFFFFFFF;
 
    class CellIterator
    {
    private:
        HeadType        head_;
 
        NextType        next_;
 
    public:
 
        CellIterator(const HeadType& head, const NextType& next)
        :
            head_(head),
            next_(next)
        {}
        
        static constexpr uint32 NoPos = 0xFFFFFFFF;
 
        INLINE_FUNCTION_H
        int32x3 numCells()const {
            return int32x3(head_.extent(0), head_.extent(1), head_.extent(2));}
 
        INLINE_FUNCTION_H
        uint32 start(int32 i, int32 j, int32 k)const {
            return head_(i,j,k); }
 
        INLINE_FUNCTION_H
        uint32 getNext(uint32 n)const {
            if(n == NoPos ) return NoPos;
            return next_(n); }
 
        INLINE_FUNCTION_H
        uint32 next(uint32 n)const{
            return next_(n);}
    };
 
private:
    
    const rectangleMesh&    domainCells_;
 
    HeadType            head_{"NBS::head",1,1,1};
 
    NextType            next_{"NBS::next", 1};
 
    uint32              nextCapacity_ = 0;
 
    void allocateArrays(rangeU32 nextRng);
 
    void checkAllocateNext(rangeU32 nextRng);
    
    void nullifyHead();
    
    void nullifyNext(rangeU32 nextRng);
    
public:
 
    TypeInfoNV("cellMapper");
 
        
        cellMapper(
            const rectangleMesh& rectMesh,
            const hostViewType1D<realx3>& pointPos,
            const pFlagTypeHost& flags);
                    
        INLINE_FUNCTION_HD
        cellMapper(const cellMapper&) = default;
 
        INLINE_FUNCTION_HD
        cellMapper(cellMapper&&) = default;
        
        INLINE_FUNCTION_HD
        cellMapper& operator = (const cellMapper&) = default;
 
        INLINE_FUNCTION_HD
        cellMapper& operator = (cellMapper&&) = default;
 
        INLINE_FUNCTION_HD
        ~cellMapper()=default;
 
 
        auto getCellIterator()const
        {
            return CellIterator(head_, next_);
        }
 
        
        bool build(
            const hostViewType1D<realx3>& pointPos,
            const pFlagTypeHost& flags);
};
 
} // pFlow
 
#endif // __cellMapper_hpp__