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154 lines
6.3 KiB
C
154 lines
6.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkQuadraticPolygon.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 vtkQuadraticPolygon
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* @brief a cell that represents a parabolic n-sided polygon
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*
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* vtkQuadraticPolygon is a concrete implementation of vtkNonLinearCell to
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* represent a 2D n-sided (2*n nodes) parabolic polygon. The polygon cannot
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* have any internal holes, and cannot self-intersect. The cell includes a
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* mid-edge node for each of the n edges of the cell. The ordering of the
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* 2*n points defining the cell are point ids (0..n-1 and n..2*n-1) where ids
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* 0..n-1 define the corner vertices of the polygon; ids n..2*n-1 define the
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* midedge nodes. Define the polygon with points ordered in the counter-
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* clockwise direction; do not repeat the last point.
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*
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* @sa
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* vtkQuadraticEdge vtkQuadraticTriangle vtkQuadraticTetra
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* vtkQuadraticHexahedron vtkQuadraticWedge vtkQuadraticPyramid
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*/
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#ifndef vtkQuadraticPolygon_h
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#define vtkQuadraticPolygon_h
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkNonLinearCell.h"
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class vtkQuadraticEdge;
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class vtkPolygon;
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class vtkIdTypeArray;
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class VTKCOMMONDATAMODEL_EXPORT vtkQuadraticPolygon : public vtkNonLinearCell
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{
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public:
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static vtkQuadraticPolygon* New();
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vtkTypeMacro(vtkQuadraticPolygon, vtkNonLinearCell);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Implement the vtkCell API. See the vtkCell API for descriptions
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* of these methods.
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*/
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int GetCellType() override { return VTK_QUADRATIC_POLYGON; }
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int GetCellDimension() override { return 2; }
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int GetNumberOfEdges() override { return this->GetNumberOfPoints() / 2; }
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int GetNumberOfFaces() override { return 0; }
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vtkCell* GetEdge(int) override;
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vtkCell* GetFace(int) override { return nullptr; }
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int IsPrimaryCell() override { return 0; }
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//@{
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/**
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* These methods are based on the vtkPolygon ones :
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* the vtkQuadraticPolygon (with n edges and 2*n points)
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* is transform into a vtkPolygon (with 2*n edges and 2*n points)
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* and the vtkPolygon methods are called.
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*/
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int CellBoundary(int subId, const double pcoords[3], vtkIdList* pts) 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 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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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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void InterpolateFunctions(const double x[3], double* weights) override;
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static void ComputeCentroid(vtkIdTypeArray* ids, vtkPoints* pts, double centroid[3]);
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int ParameterizePolygon(
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double p0[3], double p10[3], double& l10, double p20[3], double& l20, double n[3]);
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static int PointInPolygon(double x[3], int numPts, double* pts, double bounds[6], double n[3]);
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int Triangulate(vtkIdList* outTris);
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int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override;
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int NonDegenerateTriangulate(vtkIdList* outTris);
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static double DistanceToPolygon(
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double x[3], int numPts, double* pts, double bounds[6], double closest[3]);
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static int IntersectPolygonWithPolygon(int npts, double* pts, double bounds[6], int npts2,
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double* pts2, double bounds2[6], double tol, double x[3]);
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static int IntersectConvex2DCells(
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vtkCell* cell1, vtkCell* cell2, double tol, double p0[3], double p1[3]);
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//@}
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// Not implemented
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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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//@{
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/**
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* Set/Get the flag indicating whether to use Mean Value Coordinate for the
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* interpolation. If true, InterpolateFunctions() uses the Mean Value
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* Coordinate to compute weights. Otherwise, the conventional 1/r^2 method
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* is used. The UseMVCInterpolation parameter is set to true by default.
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*/
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vtkGetMacro(UseMVCInterpolation, bool);
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vtkSetMacro(UseMVCInterpolation, bool);
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//@}
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protected:
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vtkQuadraticPolygon();
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~vtkQuadraticPolygon() override;
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// variables used by instances of this class
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vtkPolygon* Polygon;
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vtkQuadraticEdge* Edge;
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// Parameter indicating whether to use Mean Value Coordinate algorithm
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// for interpolation. The parameter is true by default.
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bool UseMVCInterpolation;
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//@{
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/**
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* Methods to transform a vtkQuadraticPolygon variable into a vtkPolygon
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* variable.
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*/
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static void GetPermutationFromPolygon(vtkIdType nb, vtkIdList* permutation);
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static void PermuteToPolygon(vtkIdType nbPoints, double* inPoints, double* outPoints);
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static void PermuteToPolygon(vtkCell* inCell, vtkCell* outCell);
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static void PermuteToPolygon(vtkPoints* inPoints, vtkPoints* outPoints);
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static void PermuteToPolygon(vtkIdTypeArray* inIds, vtkIdTypeArray* outIds);
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static void PermuteToPolygon(vtkDataArray* inDataArray, vtkDataArray* outDataArray);
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void InitializePolygon();
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//@}
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//@{
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/**
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* Methods to transform a vtkPolygon variable into a vtkQuadraticPolygon
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* variable.
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*/
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static void GetPermutationToPolygon(vtkIdType nb, vtkIdList* permutation);
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static void PermuteFromPolygon(vtkIdType nb, double* values);
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static void ConvertFromPolygon(vtkIdList* ids);
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//@}
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private:
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vtkQuadraticPolygon(const vtkQuadraticPolygon&) = delete;
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void operator=(const vtkQuadraticPolygon&) = delete;
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};
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#endif
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