cutPolyValue.H

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-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM 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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Namespace
    Foam::cutPoly
 
Description
    Functions and classes for extracting values from cut edges, faces and cells
 
SourceFiles
    cutPolyValueI.H
    cutPolyValueTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef cutPolyValue_H
#define cutPolyValue_H
 
#include "cutPoly.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace cutPoly
{
 
//- Get the local coordinate within an edge, given end point values and an
//  iso-value
inline scalar edgeCutLambda
(
    const edge& e,
    const scalarField& pAlphas,
    const scalar isoAlpha
);
 
//- Linearly interpolate a value from the end points to the cut point of an
//  edge, given a local coordinate within the edge
template<class Type>
Type edgeCutValue
(
    const edge& e,
    const scalar lambda,
    const Field<Type>& pPsis
);
 
//- Linearly interpolate a value from the end points to the cut point of an
//  edge, given end point values and an iso-value
template<class Type>
Type edgeCutValue
(
    const edge& e,
    const scalarField& pAlphas,
    const scalar isoAlpha,
    const Field<Type>& pPsis
);
 
 
/*---------------------------------------------------------------------------*\
                       Class FaceCutValues Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class FaceCutValues
{
    // Private Data
 
        //- The face
        const face& f_;
 
        //- The face's cuts
        const List<labelPair>& fCuts_;
 
        //- The point values that we want to iterate over
        const Field<Type>& pPsis_;
 
        //- The point values that define the iso-surface
        const scalarField& pAlphas_;
 
        //- The value that defines the iso-surface
        const scalar isoAlpha_;
 
        //- Do we want to iterate over the cut below or above the iso surface?
        const bool below_;
 
 
public:
 
    // Public Typedefs
 
        //- The value type
        typedef Type value_type;
 
 
    // Public Classes
 
        //- Forward iterator
        class const_iterator
        {
            // Private Data
 
                //- Reference to the face-values
                const FaceCutValues<Type>& fValues_;
 
                //- Index of the sub-face and sub-face-point
                label i_, j_;
 
                //- Cache of values on cut edges for this sub-face segment
                mutable Tuple2<label, Pair<Type>> iAndCutPsis_;
 
 
            // Private Member Functions
 
                //- Get the values on the cut edges for this sub-face segment
                const Pair<Type>& cutPsis(const label i) const;
 
                //- Return the size of the given sub-face
                label size(const label i) const;
 
                //- Return the value for the given sub-face and sub-face-point
                const Type psi(const label i, const label j) const;
 
 
        public:
 
            // Constructors
 
                //- Construct from components
                const_iterator
                (
                    const FaceCutValues<Type>& fValues,
                    const label i,
                    const label j
                );
 
 
            // Member Functions
 
                //- Get the next value around the sub-face
                Type next() const;
 
 
            // Member Operators
 
                //- Equality comparison
                bool operator==(const const_iterator& it) const;
 
                //- Inequality comparison
                bool operator!=(const const_iterator& it) const;
 
                //- Dereference
                Type operator*() const;
 
                //- Increment
                inline const_iterator& operator++();
 
                //- Increment
                inline const_iterator operator++(int);
        };
 
 
    // Constructors
 
        //- Construct from components
        FaceCutValues
        (
            const face& f,
            const List<labelPair>& fCuts,
            const Field<Type>& pPsis,
            const scalarField& pAlphas,
            const scalar isoAlpha,
            const bool below
        );
 
 
    // Member Functions
 
        //- Get the beginning of the iteration over the values
        const_iterator begin() const;
 
        //- Get the end of the iteration over the values
        const_iterator end() const;
};
 
 
/*---------------------------------------------------------------------------*\
                       Class CellCutValues Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class CellCutValues
{
    // Private Data
 
        //- The cell
        const cell& c_;
 
        //- The cell's edge addressing
        const cellEdgeAddressing& cAddr_;
 
        //- The cell's cuts
        const labelListList& cCuts_;
 
        //- The faces
        const faceList& fs_;
 
        //- The point values that we want to iterate over
        const Field<Type>& pPsis_;
 
        //- The point values that define the iso-surface
        const scalarField& pAlphas_;
 
        //- The value that defines the iso-surface
        const scalar isoAlpha_;
 
 
public:
 
    // Public Typedefs
 
        //- The value type
        typedef Type value_type;
 
 
    // Public Classes
 
        //- Forward iterator
        class const_iterator
        {
            // Private Data
 
                //- Reference to the cell-values
                const CellCutValues<Type>& cValues_;
 
                //- Index of the loop and loop-point
                label i_, j_;
 
 
            // Private Member Functions
 
                //- The values at this loop-point and the next
                Pair<Type> psis_;
 
                //- Return the value for the given loop and loop-point
                Type psi(const label i, const label j);
 
 
        public:
 
            // Constructors
 
                //- Construct from components
                const_iterator
                (
                    const CellCutValues<Type>& cValues,
                    const label i,
                    const label j
                );
 
 
            // Member Functions
 
                //- Get the next value around the loop
                const Type& next() const;
 
 
            // Member Operators
 
                //- Equality comparison
                bool operator==(const const_iterator& it) const;
 
                //- Inequality comparison
                bool operator!=(const const_iterator& it) const;
 
                //- Dereference
                const Type& operator*() const;
 
                //- Increment
                inline const_iterator& operator++();
 
                //- Increment
                inline const_iterator operator++(int);
        };
 
 
    // Constructors
 
        //- Construct from components
        CellCutValues
        (
            const cell& c,
            const cellEdgeAddressing& cAddr,
            const labelListList& cCuts,
            const faceList& fs,
            const Field<Type>& pPsis,
            const scalarField& pAlphas,
            const scalar isoAlpha
        );
 
 
    // Member Functions
 
        //- Get the beginning of the iteration over the values
        const_iterator begin() const;
 
        //- Get the end of the iteration over the values
        const_iterator end() const;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace cutPoly
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "cutPolyValueI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "cutPolyValueTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //