GridForwardEulerDiffusionSolver3.hpp

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// This code is based on Jet framework.
// Copyright (c) 2018 Doyub Kim
// CubbyFlow is voxel-based fluid simulation engine for computer games.
// Copyright (c) 2020 CubbyFlow Team
// Core Part: Chris Ohk, Junwoo Hwang, Jihong Sin, Seungwoo Yoo
// AI Part: Dongheon Cho, Minseo Kim
// We are making my contributions/submissions to this project solely in our
// personal capacity and are not conveying any rights to any intellectual
// property of any third parties.

#ifndef CUBBYFLOW_GRID_FORWARD_EULER_DIFFUSION_SOLVER3_HPP
#define CUBBYFLOW_GRID_FORWARD_EULER_DIFFUSION_SOLVER3_HPP

#include <Core/Solver/Grid/GridDiffusionSolver3.hpp>

namespace CubbyFlow
{
class GridForwardEulerDiffusionSolver3 final : public GridDiffusionSolver3
{
 public:
    GridForwardEulerDiffusionSolver3() = default;

    GridForwardEulerDiffusionSolver3(const GridForwardEulerDiffusionSolver3&) =
        delete;

    GridForwardEulerDiffusionSolver3(
        GridForwardEulerDiffusionSolver3&&) noexcept = delete;

    ~GridForwardEulerDiffusionSolver3() override = default;

    GridForwardEulerDiffusionSolver3& operator=(
        const GridForwardEulerDiffusionSolver3&) = delete;

    GridForwardEulerDiffusionSolver3& operator=(
        GridForwardEulerDiffusionSolver3&&) noexcept = delete;

    void Solve(const ScalarGrid3& source, double diffusionCoefficient,
               double timeIntervalInSeconds, ScalarGrid3* dest,
               const ScalarField3& boundarySDF =
                   ConstantScalarField3{ std::numeric_limits<double>::max() },
               const ScalarField3& fluidSDF = ConstantScalarField3{
                   -std::numeric_limits<double>::max() }) override;

    void Solve(const CollocatedVectorGrid3& source, double diffusionCoefficient,
               double timeIntervalInSeconds, CollocatedVectorGrid3* dest,
               const ScalarField3& boundarySDF =
                   ConstantScalarField3{ std::numeric_limits<double>::max() },
               const ScalarField3& fluidSDF = ConstantScalarField3{
                   -std::numeric_limits<double>::max() }) override;

    void Solve(const FaceCenteredGrid3& source, double diffusionCoefficient,
               double timeIntervalInSeconds, FaceCenteredGrid3* dest,
               const ScalarField3& boundarySDF =
                   ConstantScalarField3{ std::numeric_limits<double>::max() },
               const ScalarField3& fluidSDF = ConstantScalarField3{
                   -std::numeric_limits<double>::max() }) override;

 private:
    void BuildMarkers(const Vector3UZ& size,
                      const std::function<Vector3D(const Vector3UZ&)>& pos,
                      const ScalarField3& boundarySDF,
                      const ScalarField3& fluidSDF);

    Array3<char> m_markers;
};

using GridForwardEulerDiffusionSolver3Ptr =
    std::shared_ptr<GridForwardEulerDiffusionSolver3>;
}  // namespace CubbyFlow

#endif