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vtkQuad.h
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vtkQuad.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkQuad.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 vtkQuad
* @brief a cell that represents a 2D quadrilateral
*
* vtkQuad is a concrete implementation of vtkCell to represent a 2D
* quadrilateral. vtkQuad is defined by the four points (0,1,2,3) in
* counterclockwise order. vtkQuad uses the standard isoparametric
* interpolation functions for a linear quadrilateral.
*/
#ifndef vtkQuad_h
#define vtkQuad_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkCell.h"
class vtkLine;
class vtkTriangle;
class vtkIncrementalPointLocator;
class VTKCOMMONDATAMODEL_EXPORT vtkQuad : public vtkCell
{
public:
static vtkQuad *New();
vtkTypeMacro(vtkQuad,vtkCell);
void PrintSelf(ostream& os, vtkIndent indent) override;
//@{
/**
* See the vtkCell API for descriptions of these methods.
*/
int GetCellType() override {return VTK_QUAD;};
int GetCellDimension() override {return 2;};
int GetNumberOfEdges() override {return 4;};
int GetNumberOfFaces() override {return 0;};
vtkCell *GetEdge(int edgeId) override;
vtkCell *GetFace(int) 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;
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;
double *GetParametricCoords() override;
//@}
/**
* Return the center of the triangle in parametric coordinates.
*/
int GetParametricCenter(double pcoords[3]) override;
/**
* Clip this quad using scalar value provided. Like contouring, except
* that it cuts the quad to produce other quads and/or triangles.
*/
void Clip(double value, vtkDataArray *cellScalars,
vtkIncrementalPointLocator *locator, vtkCellArray *polys,
vtkPointData *inPd, vtkPointData *outPd,
vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
int insideOut) override;
/**
* @deprecated Replaced by vtkQuad::InterpolateFunctions as of VTK 5.2
*/
static void InterpolationFunctions(const double pcoords[3], double sf[4]);
/**
* @deprecated Replaced by vtkQuad::InterpolateDerivs as of VTK 5.2
*/
static void InterpolationDerivs(const double pcoords[3], double derivs[8]);
//@{
/**
* Compute the interpolation functions/derivatives
* (aka shape functions/derivatives)
*/
void InterpolateFunctions(const double pcoords[3], double sf[4]) override
{
vtkQuad::InterpolationFunctions(pcoords,sf);
}
void InterpolateDerivs(const double pcoords[3], double derivs[8]) override
{
vtkQuad::InterpolationDerivs(pcoords,derivs);
}
//@}
/**
* Return the ids of the vertices defining edge (`edgeId`).
* Ids are related to the cell, not to the dataset.
*/
int *GetEdgeArray(int edgeId);
protected:
vtkQuad();
~vtkQuad() override;
vtkLine *Line;
vtkTriangle *Triangle;
private:
vtkQuad(const vtkQuad&) = delete;
void operator=(const vtkQuad&) = delete;
};
//----------------------------------------------------------------------------
inline int vtkQuad::GetParametricCenter(double pcoords[3])
{
pcoords[0] = pcoords[1] = 0.5;
pcoords[2] = 0.0;
return 0;
}
#endif