vtkTriangleStrip.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkTriangleStrip_h
#define vtkTriangleStrip_h
 
#include "vtkCell.h"
#include "vtkCommonDataModelModule.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkLine;
class vtkTriangle;
class vtkIncrementalPointLocator;
 
class VTKCOMMONDATAMODEL_EXPORT vtkTriangleStrip : public vtkCell
{
public:
  static vtkTriangleStrip* New();
  vtkTypeMacro(vtkTriangleStrip, vtkCell);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  int GetCellType() override { return VTK_TRIANGLE_STRIP; }
  int GetCellDimension() override { return 2; }
  int GetNumberOfEdges() override { return this->GetNumberOfPoints(); }
  int GetNumberOfFaces() override { return 0; }
  vtkCell* GetEdge(int edgeId) override;
  vtkCell* GetFace(int vtkNotUsed(faceId)) override { return nullptr; }
  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;
  int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override;
  void Derivatives(
    int subId, const double pcoords[3], const double* values, int dim, double* derivs) override;
  int IsPrimaryCell() override { return 0; }
 
  int GetParametricCenter(double pcoords[3]) override;
 
  static void DecomposeStrip(int npts, const vtkIdType* pts, vtkCellArray* tris);
 
protected:
  vtkTriangleStrip();
  ~vtkTriangleStrip() override;
 
  vtkLine* Line;
  vtkTriangle* Triangle;
 
private:
  vtkTriangleStrip(const vtkTriangleStrip&) = delete;
  void operator=(const vtkTriangleStrip&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif