src/libengrid/vtkImplicitPolyData.h

   1 //
   2 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   3 // +                                                                      +
   4 // + This file is part of enGrid.                                         +
   5 // +                                                                      +
   6 // + Copyright 2008-2013 enGits GmbH                                      +
   7 // +                                                                      +
   8 // + enGrid is free software: you can redistribute it and/or modify       +
   9 // + it under the terms of the GNU General Public License as published by +
  10 // + the Free Software Foundation, either version 3 of the License, or    +
  11 // + (at your option) any later version.                                  +
  12 // +                                                                      +
  13 // + enGrid is distributed in the hope that it will be useful,            +
  14 // + but WITHOUT ANY WARRANTY; without even the implied warranty of       +
  15 // + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        +
  16 // + GNU General Public License for more details.                         +
  17 // +                                                                      +
  18 // + You should have received a copy of the GNU General Public License    +
  19 // + along with enGrid. If not, see <http://www.gnu.org/licenses/>.       +
  20 // +                                                                      +
  21 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  22 //
  23 /*=========================================================================
  24
  25   Program:   Boolean
  26   Module:    $RCSfile: vtkImplicitPolyData.h,v $
  27   Language:  C++
  28   Date:      $Date: 2003/07/12 11:22:38 $
  29   Version:   $Revision: 1.1.1.1 $
  30
  31   Copyright (c) 2002 Denis Shamonin
  32   Section Computational Science
  33   University of Amsterdam
  34   Kruislaan 403, 1098 SJ Amsterdam
  35   the Netherlands
  36
  37   E-mail        : dshamoni@science.uva.nl
  38   URL           : http://www.science.uva.nl/~dshamoni/
  39
  40   All rights reserved.
  41
  42      This software is distributed WITHOUT ANY WARRANTY; without even
  43      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  44      PURPOSE.  See the above copyright notice for more information.
  45
  46 =========================================================================*/
  47 // .NAME vtkImplicitPolyData - treat polygons in input as implicit planes
  48 // .SECTION Description
  49 // vtkImplicitPolyData provides the basis for using arbritrary polygonal data
  50 // as an implicit surface, points are evaluated against nearest polygons which
  51 // are handled as implicit planes.
  52 // vtkImplicitPolyData is a concrete implementation of the abstract class
  53 // vtkImplicitFunction.
  54 // An internal instance of vtkTriangleFilter is used to filter vertices and
  55 // lines out of the input PolyData, and a MYvtkPointLocator is used to find the
  56 // nearest triangle to a candidate point.
  57
  58 // PLEASE SEND ME YOUR UPDATES, BUG FIXES! at dshamoni@science.uva.nl
  59
  60 #ifndef __vtkImplicitPolyData_h
  61 #define __vtkImplicitPolyData_h
  62
  63 #include <math.h>
  64 #include "vtkPolyData.h"
  65 #include "vtkImplicitFunction.h"
  66 #include "vtkTriangleFilter.h"
  67 #include "vtkIdList.h"
  68
  69 #define PointLocator vtkPointLocator
  70 #include "vtkPointLocator.h"
  71
  72 class vtkImplicitPolyData : public vtkImplicitFunction
  73 {
  74 public:
  75   static vtkImplicitPolyData *New() {return new vtkImplicitPolyData;};
  76   const char *GetClassName() {return "vtkImplicitPolyData";};
  77   void PrintSelf(ostream& os, vtkIndent indent);
  78
  79   vtkImplicitPolyData();
  80   ~vtkImplicitPolyData();
  81
  82   // Description:
  83   // Return the MTime also considering the Input dependency.
  84   unsigned long GetMTime();
  85
  86   void SetEvaluateBounds( double eBounds[6] );
  87
  88   // Description
  89   // Evaluate plane equation of nearest triangle to point x[3].
  90   double EvaluateFunction(double x[3]);
  91
  92   // Description
  93   // Evaluate function gradient of nearest triangle to point x[3].
  94   void EvaluateGradient(double x[3], double g[3]);
  95
  96   // Description:
  97   // Set the input polydata used for the implicit function evaluation.
  98   // Passes input through an internal instance of vtkTriangleFilter to remove
  99   // vertices and lines, leaving only triangular polygons for evaluation as
 100   // implicit planes
 101   void SetInput(vtkPolyData *input);
 102
 103   // Description:
 104   // Set / get the function value to use if no input polydata specified.
 105   vtkSetMacro(NoValue,double);
 106   vtkGetMacro(NoValue,double);
 107
 108   // Description:
 109   // Set / get the function gradient to use if no input polydata specified.
 110   vtkSetVector3Macro(NoGradient,double);
 111   vtkGetVector3Macro(NoGradient,double);
 112
 113   vtkSetMacro(Tolerance,double);
 114   vtkGetMacro(Tolerance,double);
 115
 116 protected:
 117   double NoValue;
 118   double NoGradient[3];
 119
 120   vtkTriangleFilter *tri;
 121   vtkPolyData *input;
 122   vtkPointLocator *locator;
 123   vtkPolygon *poly;
 124   vtkIdList *cells;
 125
 126   double EvaluateBounds[6];
 127   int   EvaluateBoundsSet;
 128   double Tolerance;
 129
 130 };
 131 #endif
 132
 133