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Program: Visualization Toolkit
Module: vtkPyramid.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkPyramid - a 3D cell that represents a linear pyramid
// .SECTION Description
// vtkPyramid is a concrete implementation of vtkCell to represent a 3D
// pyramid. A pyramid consists of a rectangular base with four triangular
// faces. vtkPyramid uses the standard isoparametric shape functions for
// a linear pyramid. The pyramid is defined by the five points (0-4) where
// (0,1,2,3) is the base of the pyramid which, using the right hand rule,
// forms a quadrilaterial whose normal points in the direction of the
// pyramid apex at vertex #4.
// .SECTION See Also
// vtkConvexPointSet vtkHexahedron vtkTetra vtkVoxel vtkWedge
#ifndef __vtkPyramid_h
#define __vtkPyramid_h
#include "vtkCell3D.h"
class vtkLine;
class vtkQuad;
class vtkTriangle;
class vtkUnstructuredGrid;
class vtkIncrementalPointLocator;
class VTK_FILTERING_EXPORT vtkPyramid : public vtkCell3D
static vtkPyramid *New();
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// See vtkCell3D API for description of these methods.
virtual void GetEdgePoints(int edgeId, int* &pts);
virtual void GetFacePoints(int faceId, int* &pts);
// Description:
// See the vtkCell API for descriptions of these methods.
int GetCellType() {return VTK_PYRAMID;}
int GetCellDimension() {return 3;}
int GetNumberOfEdges() {return 8;}
int GetNumberOfFaces() {return 5;}
vtkCell *GetEdge(int edgeId);
vtkCell *GetFace(int faceId);
int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
void Contour(double value, vtkDataArray *cellScalars,
vtkIncrementalPointLocator *locator, vtkCellArray *verts,
vtkCellArray *lines, vtkCellArray *polys,
vtkPointData *inPd, vtkPointData *outPd,
vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
int EvaluatePosition(double x[3], double* closestPoint,
int& subId, double pcoords[3],
double& dist2, double *weights);
void EvaluateLocation(int& subId, double pcoords[3], double x[3],
double *weights);
int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
double x[3], double pcoords[3], int& subId);
int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
void Derivatives(int subId, double pcoords[3], double *values,
int dim, double *derivs);
virtual double *GetParametricCoords();
// Description:
// Return the center of the pyramid in parametric coordinates.
int GetParametricCenter(double pcoords[3]);
// Description:
// @deprecated Replaced by vtkPyramid::InterpolateFunctions as of VTK 5.2
static void InterpolationFunctions(double pcoords[3], double weights[5]);
// Description:
// @deprecated Replaced by vtkPyramid::InterpolateDerivs as of VTK 5.2
static void InterpolationDerivs(double pcoords[3], double derivs[15]);
// Description:
// Compute the interpolation functions/derivatives
// (aka shape functions/derivatives)
virtual void InterpolateFunctions(double pcoords[3], double weights[5])
virtual void InterpolateDerivs(double pcoords[3], double derivs[15])
int JacobianInverse(double pcoords[3], double **inverse, double derivs[15]);
// Description:
// Return the ids of the vertices defining edge/face (`edgeId`/`faceId').
// Ids are related to the cell, not to the dataset.
static int *GetEdgeArray(int edgeId);
static int *GetFaceArray(int faceId);
vtkLine *Line;
vtkTriangle *Triangle;
vtkQuad *Quad;
vtkPyramid(const vtkPyramid&); // Not implemented.
void operator=(const vtkPyramid&); // Not implemented.
inline int vtkPyramid::GetParametricCenter(double pcoords[3])
pcoords[0] = pcoords[1] = 0.4;
pcoords[2] = 0.2;
return 0;