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138 lines
5.9 KiB
C++
138 lines
5.9 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkHigherOrderTetra.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkHigherOrderTetra
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* @brief A 3D cell that represents an arbitrary order HigherOrder tetrahedron
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*
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* vtkHigherOrderTetra is a concrete implementation of vtkCell to represent a
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* 3D tetrahedron using HigherOrder shape functions of user specified order.
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*
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* The number of points in a HigherOrder cell determines the order over which they
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* are iterated relative to the parametric coordinate system of the cell. The
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* first points that are reported are vertices. They appear in the same order in
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* which they would appear in linear cells. Mid-edge points are reported next.
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* They are reported in sequence. For two- and three-dimensional (3D) cells, the
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* following set of points to be reported are face points. Finally, 3D cells
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* report points interior to their volume.
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*/
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#ifndef vtkHigherOrderTetra_h
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#define vtkHigherOrderTetra_h
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#include <functional> //For std::function
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkNew.h" // For member variable.
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#include "vtkNonLinearCell.h"
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#include "vtkSmartPointer.h" // For member variable.
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#include <vector> //For caching
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class vtkTetra;
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class vtkHigherOrderCurve;
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class vtkHigherOrderTriangle;
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class vtkDoubleArray;
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class VTKCOMMONDATAMODEL_EXPORT vtkHigherOrderTetra : public vtkNonLinearCell
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{
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public:
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vtkTypeMacro(vtkHigherOrderTetra, vtkNonLinearCell);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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int GetCellType() override = 0;
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int GetCellDimension() override { return 3; }
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int RequiresInitialization() override { return 1; }
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int GetNumberOfEdges() override { return 6; }
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int GetNumberOfFaces() override { return 4; }
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vtkCell* GetEdge(int edgeId) override = 0;
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vtkCell* GetFace(int faceId) override = 0;
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void SetEdgeIdsAndPoints(int edgeId,
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const std::function<void(const vtkIdType&)>& set_number_of_ids_and_points,
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const std::function<void(const vtkIdType&, const vtkIdType&)>& set_ids_and_points);
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void SetFaceIdsAndPoints(vtkHigherOrderTriangle* result, int edgeId,
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const std::function<void(const vtkIdType&)>& set_number_of_ids_and_points,
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const std::function<void(const vtkIdType&, const vtkIdType&)>& set_ids_and_points);
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void Initialize() override;
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int CellBoundary(int subId, const double pcoords[3], vtkIdList* pts) override;
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int EvaluatePosition(const double x[3], double closestPoint[3], int& subId, double pcoords[3],
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double& dist2, double weights[]) override;
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void EvaluateLocation(int& subId, const double pcoords[3], double x[3], double* weights) override;
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void Contour(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
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vtkCellArray* verts, vtkCellArray* lines, vtkCellArray* polys, vtkPointData* inPd,
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vtkPointData* outPd, vtkCellData* inCd, vtkIdType cellId, vtkCellData* outCd) override;
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void Clip(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
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vtkCellArray* polys, vtkPointData* inPd, vtkPointData* outPd, vtkCellData* inCd,
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vtkIdType cellId, vtkCellData* outCd, int insideOut) override;
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int IntersectWithLine(const double p1[3], const double p2[3], double tol, double& t, double x[3],
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double pcoords[3], int& subId) override;
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int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override;
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void JacobianInverse(const double pcoords[3], double** inverse, double* derivs);
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void Derivatives(
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int subId, const double pcoords[3], const double* values, int dim, double* derivs) override;
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void SetParametricCoords();
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double* GetParametricCoords() override;
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int GetParametricCenter(double pcoords[3]) override;
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double GetParametricDistance(const double pcoords[3]) override;
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void InterpolateFunctions(const double pcoords[3], double* weights) override = 0;
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void InterpolateDerivs(const double pcoords[3], double* derivs) override = 0;
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vtkIdType GetOrder() const { return this->Order; }
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vtkIdType ComputeOrder();
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static vtkIdType ComputeOrder(const vtkIdType nPoints);
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void ToBarycentricIndex(vtkIdType index, vtkIdType* bindex);
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vtkIdType ToIndex(const vtkIdType* bindex);
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static void BarycentricIndex(vtkIdType index, vtkIdType* bindex, vtkIdType order);
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static vtkIdType Index(const vtkIdType* bindex, vtkIdType order);
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virtual vtkHigherOrderCurve* getEdgeCell() = 0;
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virtual vtkHigherOrderTriangle* getFaceCell() = 0;
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protected:
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vtkHigherOrderTetra();
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~vtkHigherOrderTetra() override;
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vtkIdType GetNumberOfSubtetras() const { return this->NumberOfSubtetras; }
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vtkIdType ComputeNumberOfSubtetras();
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// Description:
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// Given the index of the subtriangle, compute the barycentric indices of
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// the subtriangle's vertices.
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void SubtetraBarycentricPointIndices(vtkIdType cellIndex, vtkIdType (&pointBIndices)[4][4]);
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void TetraFromOctahedron(
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vtkIdType cellIndex, const vtkIdType (&octBIndices)[6][4], vtkIdType (&tetraBIndices)[4][4]);
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vtkTetra* Tetra;
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vtkDoubleArray* Scalars; // used to avoid New/Delete in contouring/clipping
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vtkIdType Order;
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vtkIdType NumberOfSubtetras;
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vtkSmartPointer<vtkPoints> PointParametricCoordinates;
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std::vector<vtkIdType> EdgeIds;
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std::vector<vtkIdType> BarycentricIndexMap;
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std::vector<vtkIdType> IndexMap;
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std::vector<vtkIdType> SubtetraIndexMap;
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private:
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vtkHigherOrderTetra(const vtkHigherOrderTetra&) = delete;
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void operator=(const vtkHigherOrderTetra&) = delete;
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};
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#endif
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