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/*=========================================================================
Program: Visualization Toolkit
Module: vtkVertex.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 vtkVertex
* @brief a cell that represents a 3D point
*
* vtkVertex is a concrete implementation of vtkCell to represent a 3D point.
*/
#ifndef vtkVertex_h
#define vtkVertex_h
#include "vtkCell.h"
#include "vtkCommonDataModelModule.h" // For export macro
class vtkIncrementalPointLocator;
class VTKCOMMONDATAMODEL_EXPORT vtkVertex : public vtkCell
{
public:
static vtkVertex* New();
vtkTypeMacro(vtkVertex, vtkCell);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Make a new vtkVertex object with the same information as this object.
*/
//@{
/**
* See the vtkCell API for descriptions of these methods.
*/
int GetCellType() override { return VTK_VERTEX; }
int GetCellDimension() override { return 0; }
int GetNumberOfEdges() override { return 0; }
int GetNumberOfFaces() override { return 0; }
vtkCell* GetEdge(int) override { return nullptr; }
vtkCell* GetFace(int) override { return nullptr; }
void Clip(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
vtkCellArray* pts, 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;
double* GetParametricCoords() override;
//@}
/**
* Given parametric coordinates of a point, return the closest cell
* boundary, and whether the point is inside or outside of the cell. The
* cell boundary is defined by a list of points (pts) that specify a vertex
* (1D cell). If the return value of the method is != 0, then the point is
* inside the cell.
*/
int CellBoundary(int subId, const double pcoords[3], vtkIdList* pts) override;
/**
* Generate contouring primitives. The scalar list cellScalars are
* scalar values at each cell point. The point locator is essentially a
* points list that merges points as they are inserted (i.e., prevents
* duplicates).
*/
void Contour(double value, vtkDataArray* cellScalars, vtkIncrementalPointLocator* locator,
vtkCellArray* verts1, vtkCellArray* lines, vtkCellArray* verts2, vtkPointData* inPd,
vtkPointData* outPd, vtkCellData* inCd, vtkIdType cellId, vtkCellData* outCd) override;
/**
* Return the center of the triangle in parametric coordinates.
*/
int GetParametricCenter(double pcoords[3]) override;
/**
* Intersect with a ray. Return parametric coordinates (both line and cell)
* and global intersection coordinates, given ray definition and tolerance.
* The method returns non-zero value if intersection occurs.
*/
int IntersectWithLine(const double p1[3], const double p2[3], double tol, double& t, double x[3],
double pcoords[3], int& subId) override;
/**
* Triangulate the vertex. This method fills pts and ptIds with information
* from the only point in the vertex.
*/
int Triangulate(int index, vtkIdList* ptIds, vtkPoints* pts) override;
/**
* Get the derivative of the vertex. Returns (0.0, 0.0, 0.0) for all
* dimensions.
*/
void Derivatives(
int subId, const double pcoords[3], const double* values, int dim, double* derivs) override;
static void InterpolationFunctions(const double pcoords[3], double weights[1]);
static void InterpolationDerivs(const double pcoords[3], double derivs[3]);
//@{
/**
* Compute the interpolation functions/derivatives
* (aka shape functions/derivatives)
*/
void InterpolateFunctions(const double pcoords[3], double weights[1]) override
{
vtkVertex::InterpolationFunctions(pcoords, weights);
}
void InterpolateDerivs(const double pcoords[3], double derivs[3]) override
{
vtkVertex::InterpolationDerivs(pcoords, derivs);
}
//@}
protected:
vtkVertex();
~vtkVertex() override {}
private:
vtkVertex(const vtkVertex&) = delete;
void operator=(const vtkVertex&) = delete;
};
//----------------------------------------------------------------------------
inline int vtkVertex::GetParametricCenter(double pcoords[3])
{
pcoords[0] = pcoords[1] = pcoords[2] = 0.0;
return 0;
}
#endif
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