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Program: Visualization Toolkit
Module: vtkCubicLine.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 vtkCubicLine - cell represents a cubic , isoparametric 1D line
// .SECTION Description
// vtkCubicLine is a concrete implementation of vtkNonLinearCell to represent a 1D Cubic line.
// The Cubic Line is the 4 nodes isoparametric parabolic line . The
// interpolation is the standard finite element, cubic isoparametric
// shape function. The cell includes two mid-edge nodes. The ordering of the
// four points defining the cell is point ids (0,1,2,3) where id #2 and #3 are the
// mid-edge nodes. Please note that the parametric coordinates lie between -1 and 1
// in accordance with most standard documentations.
// .SECTION Thanks
// <verbatim>
// This file has been developed by Oxalya -
// Copyright (c) EDF -
// </verbatim>
#ifndef __vtkCubicLine_h
#define __vtkCubicLine_h
#include "vtkNonLinearCell.h"
class vtkLine;
class vtkDoubleArray;
class VTK_FILTERING_EXPORT vtkCubicLine : public vtkNonLinearCell
static vtkCubicLine *New();
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// See the vtkCell API for descriptions of these methods.
int GetCellType() {return VTK_CUBIC_LINE;};
int GetCellDimension() {return 1;};
int GetNumberOfEdges() {return 0;};
int GetNumberOfFaces() {return 0;};
vtkCell *GetEdge(int) {return 0;};
vtkCell *GetFace(int) {return 0;};
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 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 distance of the parametric coordinate provided to the
// cell. If inside the cell, a distance of zero is returned.
double GetParametricDistance(double pcoords[3]);
// Description:
// Clip this line using scalar value provided. Like contouring, except
// that it cuts the line to produce other lines.
void Clip(double value, vtkDataArray *cellScalars,
vtkIncrementalPointLocator *locator, vtkCellArray *lines,
vtkPointData *inPd, vtkPointData *outPd,
vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
int insideOut);
// Description:
// Return the center of the triangle in parametric coordinates.
int GetParametricCenter(double pcoords[3]);
// Description:
// Line-line intersection. Intersection has to occur within [0,1] parametric
// coordinates and with specified tolerance.
int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
double x[3], double pcoords[3], int& subId);
// Description:
// @deprecated Replaced by vtkCubicLine::InterpolateFunctions as of VTK 5.2
static void InterpolationFunctions(double pcoords[3], double weights[4]);
// Description:
// @deprecated Replaced by vtkCubicLine::InterpolateDerivs as of VTK 5.2
static void InterpolationDerivs(double pcoords[3], double derivs[4]);
// Description:
// Compute the interpolation functions/derivatives
// (aka shape functions/derivatives)
virtual void InterpolateFunctions(double pcoords[3], double weights[4])
virtual void InterpolateDerivs(double pcoords[3], double derivs[4])
vtkLine *Line;
vtkDoubleArray *Scalars; //used to avoid New/Delete in contouring/clipping
vtkCubicLine(const vtkCubicLine&); // Not implemented.
void operator=(const vtkCubicLine&); // Not implemented.
inline int vtkCubicLine::GetParametricCenter(double pcoords[3])
pcoords[0]=pcoords[1] = pcoords[2] = 0.0;
return 0;