vtkQuadraticPolygon.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkQuadraticPolygon_h
#define vtkQuadraticPolygon_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkNonLinearCell.h"

VTK_ABI_NAMESPACE_BEGIN
class vtkQuadraticEdge;
class vtkPolygon;
class vtkIdTypeArray;

class VTKCOMMONDATAMODEL_EXPORT vtkQuadraticPolygon : public vtkNonLinearCell
{
public:
  static vtkQuadraticPolygon* New();
  vtkTypeMacro(vtkQuadraticPolygon, vtkNonLinearCell);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  int GetCellType() override { return VTK_QUADRATIC_POLYGON; }
  int GetCellDimension() override { return 2; }
  int GetNumberOfEdges() override { return this->GetNumberOfPoints() / 2; }
  int GetNumberOfFaces() override { return 0; }
  vtkCell* GetEdge(int) override;
  vtkCell* GetFace(int) override { return nullptr; }
  int IsPrimaryCell() VTK_FUTURE_CONST override { return 0; }


  int CellBoundary(int subId, const double pcoords[3], vtkIdList* pts) override;
  void Contour(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
    vtkCellArray* verts, vtkCellArray* lines, vtkCellArray* polys, vtkPointData* inPd,
    vtkPointData* outPd, vtkCellData* inCd, vtkIdType cellId, vtkCellData* outCd) override;
  void Clip(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
    vtkCellArray* polys, vtkPointData* inPd, vtkPointData* outPd, vtkCellData* inCd,
    vtkIdType cellId, vtkCellData* outCd, int insideOut) override;
  int EvaluatePosition(const double x[3], double closestPoint[3], int& subId, double pcoords[3],
    double& dist2, double weights[]) override;
  void EvaluateLocation(int& subId, const double pcoords[3], double x[3], double* weights) override;
  int IntersectWithLine(const double p1[3], const double p2[3], double tol, double& t, double x[3],
    double pcoords[3], int& subId) override;
  void InterpolateFunctions(const double x[3], double* weights) override;
  static void ComputeCentroid(vtkIdTypeArray* ids, vtkPoints* pts, double centroid[3]);
  int ParameterizePolygon(
    double p0[3], double p10[3], double& l10, double p20[3], double& l20, double n[3]);
  static int PointInPolygon(double x[3], int numPts, double* pts, double bounds[6], double n[3]);
  // Needed to remove warning "member function does not override any
  // base class virtual member function"
  int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override
  {
    return vtkCell::Triangulate(index, ptIds, pts);
  }
  int TriangulateLocalIds(int index, vtkIdList* ptIds) override;
  int NonDegenerateTriangulate(vtkIdList* outTris);
  static double DistanceToPolygon(
    double x[3], int numPts, double* pts, double bounds[6], double closest[3]);
  static int IntersectPolygonWithPolygon(int npts, double* pts, double bounds[6], int npts2,
    double* pts2, double bounds2[6], double tol, double x[3]);
  static int IntersectConvex2DCells(
    vtkCell* cell1, vtkCell* cell2, double tol, double p0[3], double p1[3]);

  // Not implemented
  void Derivatives(
    int subId, const double pcoords[3], const double* values, int dim, double* derivs) override;


  vtkGetMacro(UseMVCInterpolation, bool);
  vtkSetMacro(UseMVCInterpolation, bool);

protected:
  vtkQuadraticPolygon();
  ~vtkQuadraticPolygon() override;

  // variables used by instances of this class
  vtkPolygon* Polygon;
  vtkQuadraticEdge* Edge;

  // Parameter indicating whether to use Mean Value Coordinate algorithm
  // for interpolation. The parameter is true by default.
  bool UseMVCInterpolation;


  static void GetPermutationFromPolygon(vtkIdType nb, vtkIdList* permutation);
  static void PermuteToPolygon(vtkIdType nbPoints, double* inPoints, double* outPoints);
  static void PermuteToPolygon(vtkCell* inCell, vtkCell* outCell);
  static void PermuteToPolygon(vtkPoints* inPoints, vtkPoints* outPoints);
  static void PermuteToPolygon(vtkIdTypeArray* inIds, vtkIdTypeArray* outIds);
  static void PermuteToPolygon(vtkDataArray* inDataArray, vtkDataArray* outDataArray);
  void InitializePolygon();


  static void GetPermutationToPolygon(vtkIdType nb, vtkIdList* permutation);
  static void PermuteFromPolygon(vtkIdType nb, double* values);
  static void ConvertFromPolygon(vtkIdType nb, vtkIdList* ids);

private:
  vtkQuadraticPolygon(const vtkQuadraticPolygon&) = delete;
  void operator=(const vtkQuadraticPolygon&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif