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dox/Filtering/vtkLine.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkLine.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00024 #ifndef __vtkLine_h
00025 #define __vtkLine_h
00026 
00027 #include "vtkCell.h"
00028 
00029 class VTK_FILTERING_EXPORT vtkLine : public vtkCell
00030 {
00031 public:
00032   static vtkLine *New();
00033   vtkTypeRevisionMacro(vtkLine,vtkCell);
00034   void PrintSelf(ostream& os, vtkIndent indent);
00035 
00037 
00038   int GetCellType() {return VTK_LINE;};
00039   int GetCellDimension() {return 1;};
00040   int GetNumberOfEdges() {return 0;};
00041   int GetNumberOfFaces() {return 0;};
00042   vtkCell *GetEdge(int) {return 0;};
00043   vtkCell *GetFace(int) {return 0;};
00044   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00045   void Contour(double value, vtkDataArray *cellScalars,
00046                vtkPointLocator *locator, vtkCellArray *verts,
00047                vtkCellArray *lines, vtkCellArray *polys,
00048                vtkPointData *inPd, vtkPointData *outPd,
00049                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00050   int EvaluatePosition(double x[3], double* closestPoint,
00051                        int& subId, double pcoords[3],
00052                        double& dist2, double *weights);
00053   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00054                         double *weights);
00055   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00056   void Derivatives(int subId, double pcoords[3], double *values,
00057                    int dim, double *derivs);
00058   virtual double *GetParametricCoords();
00060 
00062 
00064   void Clip(double value, vtkDataArray *cellScalars,
00065             vtkPointLocator *locator, vtkCellArray *lines,
00066             vtkPointData *inPd, vtkPointData *outPd,
00067             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00068             int insideOut);
00070 
00072   int GetParametricCenter(double pcoords[3]);
00073 
00075 
00077   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00078                         double x[3], double pcoords[3], int& subId);
00080 
00081 
00083 
00088   static int Intersection(double p1[3], double p2[3],
00089                           double x1[3], double x2[3],
00090                           double& u, double& v);
00092 
00093 
00095 
00101   static double DistanceToLine(double x[3], double p1[3], double p2[3],
00102                               double &t, double closestPoint[3]);
00104 
00105 
00109   static double DistanceToLine(double x[3], double p1[3], double p2[3]);
00110 
00112 
00118   static double DistanceBetweenLines(
00119                 double l0[3], double l1[3], 
00120                 double m0[3], double m1[3],
00121                 double closestPt1[3], double closestPt2[3],
00122                 double &t1, double &t2 );
00124 
00126 
00132   static double DistanceBetweenLineSegments(
00133                 double l0[3], double l1[3], 
00134                 double m0[3], double m1[3],
00135                 double closestPt1[3], double closestPt2[3],
00136                 double &t1, double &t2 );
00138   
00140 
00141   static void InterpolationFunctions(double pcoords[3], double weights[2]);
00142   // Description:
00143   // @deprecated Replaced by vtkLine::InterpolateDerivs as of VTK 5.2
00144   static void InterpolationDerivs(double pcoords[3], double derivs[2]);
00145   // Description:
00146   // Compute the interpolation functions/derivatives
00147   // (aka shape functions/derivatives)
00148   virtual void InterpolateFunctions(double pcoords[3], double weights[2])
00149     {
00150     vtkLine::InterpolationFunctions(pcoords,weights);
00151     }
00152   virtual void InterpolateDerivs(double pcoords[3], double derivs[2])
00153     {
00154     vtkLine::InterpolationDerivs(pcoords,derivs);
00155     }
00157 
00158 protected:
00159   vtkLine();
00160   ~vtkLine() {};
00161 
00162 private:
00163   vtkLine(const vtkLine&);  // Not implemented.
00164   void operator=(const vtkLine&);  // Not implemented.
00165 };
00166 
00167 //----------------------------------------------------------------------------
00168 inline int vtkLine::GetParametricCenter(double pcoords[3])
00169 {
00170   pcoords[0] = 0.5;
00171   pcoords[1] = pcoords[2] = 0.0;
00172   return 0;
00173 }
00174 
00175 #endif
00176 
00177 

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