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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkHexahedronCell_h
#define itkHexahedronCell_h
#include "itkQuadrilateralCell.h"
#include "itkHexahedronCellTopology.h"
#include "itkMakeFilled.h"
#include <array>
namespace itk
{
/** \class HexahedronCell
* \brief Represents a hexahedron (cuboid) for a Mesh.
*
* HexahedronCell represents a hexahedron, more precisely, a cuboid, for a Mesh.
*
* \tparam TPixelType The type associated with a point, cell, or boundary
* for use in storing its data.
*
* \tparam TCellTraits Type information of mesh containing cell.
*
* \todo When reviewing this class, the documentation of the template
* parameters MUST be fixed.
*
* NOTE: ONLY 3D implementations are instrumented. All other dimensions
* result in incorrect processing.
*
* \ingroup MeshObjects
* \ingroup ITKCommon
*/
template <typename TCellInterface>
class ITK_TEMPLATE_EXPORT HexahedronCell
: public TCellInterface
, private HexahedronCellTopology
{
public:
ITK_DISALLOW_COPY_AND_MOVE(HexahedronCell);
/** Standard class type aliases. */
itkCellCommonTypedefs(HexahedronCell);
itkCellInheritedTypedefs(TCellInterface);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(HexahedronCell);
/** The type of boundary for this triangle's vertices. */
using VertexType = VertexCell<TCellInterface>;
using VertexAutoPointer = typename VertexType::SelfAutoPointer;
/** The type of boundary for this triangle's edges. */
using EdgeType = LineCell<TCellInterface>;
using EdgeAutoPointer = typename EdgeType::SelfAutoPointer;
/** The type of boundary for this hexahedron's faces. */
using FaceType = QuadrilateralCell<TCellInterface>;
using FaceAutoPointer = typename FaceType::SelfAutoPointer;
/** Hexahedron-specific topology numbers. */
static constexpr unsigned int NumberOfPoints = 8;
static constexpr unsigned int NumberOfVertices = 8;
static constexpr unsigned int NumberOfEdges = 12;
static constexpr unsigned int NumberOfFaces = 6;
static constexpr unsigned int CellDimension = 3;
/** HARDCODE Implementation requirements, while
* allowing general interface. The General interface
* is needed to facilitate the general SpatialObject
* loader.
*/
static constexpr unsigned int CellDimension3D = 3;
static constexpr unsigned int PointDimension3D = 3;
/** Implement the standard CellInterface. */
CellGeometryEnum
GetType() const override
{
return CellGeometryEnum::HEXAHEDRON_CELL;
}
void
MakeCopy(CellAutoPointer &) const override;
unsigned int
GetDimension() const override;
unsigned int
GetNumberOfPoints() const override;
CellFeatureCount
GetNumberOfBoundaryFeatures(int dimension) const override;
bool
GetBoundaryFeature(int dimension, CellFeatureIdentifier, CellAutoPointer &) override;
void
SetPointIds(PointIdConstIterator first) override;
void
SetPointIds(PointIdConstIterator first, PointIdConstIterator last) override;
void
SetPointId(int localId, PointIdentifier) override;
PointIdIterator
PointIdsBegin() override;
PointIdConstIterator
PointIdsBegin() const override;
PointIdIterator
PointIdsEnd() override;
PointIdConstIterator
PointIdsEnd() const override;
/** Hexahedron-specific interface. */
virtual CellFeatureCount
GetNumberOfVertices() const;
virtual CellFeatureCount
GetNumberOfEdges() const;
virtual CellFeatureCount
GetNumberOfFaces() const;
virtual bool
GetVertex(CellFeatureIdentifier, VertexAutoPointer &);
virtual bool
GetEdge(CellFeatureIdentifier, EdgeAutoPointer &);
virtual bool
GetFace(CellFeatureIdentifier, FaceAutoPointer &);
/** Evaluate the position inside the cell */
bool
EvaluatePosition(CoordRepType *,
PointsContainer *,
CoordRepType *,
CoordRepType[],
double *,
InterpolationWeightType *) override;
/** Visitor interface */
itkCellVisitMacro(CellGeometryEnum::HEXAHEDRON_CELL);
protected:
/** Store the number of points needed for a hexahedron. */
std::array<PointIdentifier, NumberOfPoints> m_PointIds{ MakeFilled<std::array<PointIdentifier, NumberOfPoints>>(
NumericTraits<PointIdentifier>::max()) };
void
InterpolationDerivs(CoordRepType pcoords[Self::CellDimension],
CoordRepType derivs[Self::CellDimension * Self::NumberOfPoints]);
void
InterpolationFunctions(CoordRepType pcoords[Self::CellDimension], InterpolationWeightType sf[Self::NumberOfPoints]);
void
EvaluateLocation(int & itkNotUsed(subId),
PointsContainer * points,
CoordRepType pcoords[Self::CellDimension],
CoordRepType x[Self::CellDimension],
InterpolationWeightType * weights);
public:
HexahedronCell() = default;
~HexahedronCell() override = default;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkHexahedronCell.hxx"
#endif
#endif
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