GridFactory.h

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//=======================================================================================
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//
//  This file is part of VirtualFluids. VirtualFluids is free software: you can
//  redistribute it and/or modify it under the terms of the GNU General Public
//  License as published by the Free Software Foundation, either version 3 of
//  the License, or (at your option) any later version.
//
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//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
//  for more details.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//  SPDX-FileCopyrightText: Copyright © VirtualFluids Project contributors, see AUTHORS.md in root folder
//
//=======================================================================================
#ifndef GRID_FACTORY_H
#define GRID_FACTORY_H
 
#include "global.h"
 
#include "geometries/Cuboid/Cuboid.h"
#include "geometries/TriangularMesh/TriangularMeshStrategy.h"
 
#include "grid/GridImp.h"
 
namespace vf::gpu {
 
enum class TriangularMeshDiscretizationMethod
{
    RAYCASTING, POINT_IN_OBJECT, POINT_UNDER_TRIANGLE
#if defined(VF_HAS_FAST_WINDING)
    , FAST_WINDING
#endif
};
 
class GridFactory
{
public:
    static SPtr<GridFactory> make()
    {
        return std::make_shared<GridFactory>();
    }
 
    SPtr<Grid> makeGrid(SPtr<Object> gridShape, real startX, real startY, real startZ, real endX, real endY, real endZ, real delta, uint level, const std::string& d3Qxx = "D3Q27")
    {
        SPtr<GridImp> grid;
        
        grid = GridImp::makeShared(gridShape, startX, startY, startZ, endX, endY, endZ, delta, d3Qxx, level);
 
        if (triangularMeshDiscretizationStrategy)
            grid->setTriangularMeshDiscretizationStrategy(triangularMeshDiscretizationStrategy);
        else
            grid->setTriangularMeshDiscretizationStrategy(std::make_shared<PointInObjectDiscretizationStrategy>());
 
        return grid;
    }
 
    void setTriangularMeshDiscretizationMethod(TriangularMeshDiscretizationMethod triangularMeshDiscretizationMethod)
    {
        switch (triangularMeshDiscretizationMethod)
        {
        case TriangularMeshDiscretizationMethod::POINT_UNDER_TRIANGLE:
            triangularMeshDiscretizationStrategy = std::make_shared<PointUnderTriangleStrategy>();
            break;
        case TriangularMeshDiscretizationMethod::RAYCASTING:
            triangularMeshDiscretizationStrategy = std::make_shared<RayCastingDiscretizationStrategy>();
            break;
        case TriangularMeshDiscretizationMethod::POINT_IN_OBJECT:
            triangularMeshDiscretizationStrategy = std::make_shared<PointInObjectDiscretizationStrategy>();
            break;
#if defined(VF_HAS_FAST_WINDING)
        case TriangularMeshDiscretizationMethod::FAST_WINDING:
            triangularMeshDiscretizationStrategy = std::make_shared<FastWindingDiscretizationStrategy>();
            break;
#endif
        }
    }
 
    void setTriangularMeshDiscretizationStrategy(
        SPtr<TriangularMeshDiscretizationStrategy> strategy)
    {
        triangularMeshDiscretizationStrategy = strategy;
    }
 
private:
    SPtr<TriangularMeshDiscretizationStrategy> triangularMeshDiscretizationStrategy;
};
 
}
 
#endif