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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTriangleStrip.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkTriangleStrip
* @brief a cell that represents a triangle strip
*
* vtkTriangleStrip is a concrete implementation of vtkCell to represent a 2D
* triangle strip. A triangle strip is a compact representation of triangles
* connected edge to edge in strip fashion. The connectivity of a triangle
* strip is three points defining an initial triangle, then for each
* additional triangle, a single point that, combined with the previous two
* points, defines the next triangle.
*/
#ifndef vtkTriangleStrip_h
#define vtkTriangleStrip_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkCell.h"
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) VTK_OVERRIDE;
//@{
/**
* See the vtkCell API for descriptions of these methods.
*/
int GetCellType() VTK_OVERRIDE {return VTK_TRIANGLE_STRIP;};
int GetCellDimension() VTK_OVERRIDE {return 2;};
int GetNumberOfEdges() VTK_OVERRIDE {return this->GetNumberOfPoints();};
int GetNumberOfFaces() VTK_OVERRIDE {return 0;};
vtkCell *GetEdge(int edgeId) VTK_OVERRIDE;
vtkCell *GetFace(int vtkNotUsed(faceId)) VTK_OVERRIDE {return 0;};
int CellBoundary(int subId, double pcoords[3], vtkIdList *pts) VTK_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) VTK_OVERRIDE;
void Clip(double value, vtkDataArray *cellScalars,
vtkIncrementalPointLocator *locator, vtkCellArray *polys,
vtkPointData *inPd, vtkPointData *outPd,
vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
int insideOut) VTK_OVERRIDE;
//@}
int EvaluatePosition(double x[3], double* closestPoint,
int& subId, double pcoords[3],
double& dist2, double *weights) VTK_OVERRIDE;
void EvaluateLocation(int& subId, double pcoords[3], double x[3],
double *weights) VTK_OVERRIDE;
int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
double x[3], double pcoords[3], int& subId) VTK_OVERRIDE;
int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts) VTK_OVERRIDE;
void Derivatives(int subId, double pcoords[3], double *values,
int dim, double *derivs) VTK_OVERRIDE;
int IsPrimaryCell() VTK_OVERRIDE {return 0;}
/**
* Return the center of the point cloud in parametric coordinates.
*/
int GetParametricCenter(double pcoords[3]) VTK_OVERRIDE;
/**
* Given a triangle strip, decompose it into a list of (triangle)
* polygons. The polygons are appended to the end of the list of triangles.
*/
static void DecomposeStrip(int npts, vtkIdType *pts, vtkCellArray *tris);
protected:
vtkTriangleStrip();
~vtkTriangleStrip() VTK_OVERRIDE;
vtkLine *Line;
vtkTriangle *Triangle;
private:
vtkTriangleStrip(const vtkTriangleStrip&) VTK_DELETE_FUNCTION;
void operator=(const vtkTriangleStrip&) VTK_DELETE_FUNCTION;
};
#endif
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