File: itkCleanQuadEdgeMeshFilter.hxx

package info (click to toggle)
insighttoolkit5 5.4.3-5
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 704,384 kB
  • sloc: cpp: 783,592; ansic: 628,724; xml: 44,704; fortran: 34,250; python: 22,874; sh: 4,078; pascal: 2,636; lisp: 2,158; makefile: 464; yacc: 328; asm: 205; perl: 203; lex: 146; tcl: 132; javascript: 98; csh: 81
file content (163 lines) | stat: -rw-r--r-- 4,912 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkCleanQuadEdgeMeshFilter_hxx
#define itkCleanQuadEdgeMeshFilter_hxx

#include "itkMath.h"

namespace itk
{

template <typename TInputMesh, typename TOutputMesh>
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::CleanQuadEdgeMeshFilter()
{
  this->m_AbsoluteTolerance = InputCoordRepType{};
  this->m_RelativeTolerance = InputCoordRepType{};

  this->m_BoundingBox = BoundingBoxType::New();

  this->m_Criterion = CriterionType::New();
  this->m_Criterion->SetTopologicalChange(false);

  this->m_Decimation = DecimationType::New();
  this->m_Decimation->SetCriterion(this->m_Criterion);
}


template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::GenerateData()
{
  InputCoordRepType zeroValue{};

  InputCoordRepType absoluteToleranceSquared = this->m_AbsoluteTolerance * this->m_AbsoluteTolerance;
  if ((Math::ExactlyEquals(this->m_AbsoluteTolerance, zeroValue)) &&
      (Math::NotExactlyEquals(this->m_RelativeTolerance, zeroValue)))
  {
    this->m_BoundingBox->SetPoints(this->GetInput()->GetPoints());
    this->m_BoundingBox->ComputeBoundingBox();

    absoluteToleranceSquared =
      this->m_RelativeTolerance * this->m_RelativeTolerance * this->m_BoundingBox->GetDiagonalLength2();
  }

  this->MergePoints(absoluteToleranceSquared);
  this->CleanPoints();
}


template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::MergePoints(const InputCoordRepType absoluteToleranceSquared)
{
  OutputMeshPointer output = this->GetOutput();

  this->m_Criterion->SetMeasureBound(absoluteToleranceSquared);

  this->m_Decimation->SetInput(this->GetInput());
  this->m_Decimation->Update();

  InputMeshPointer decimatedMesh = this->m_Decimation->GetOutput();

  InputPointsContainerIterator pointsIt = decimatedMesh->GetPoints()->Begin();
  InputPointsContainerIterator pointsItEnd = decimatedMesh->GetPoints()->End();

  OutputPointType outputPoint;

  while (pointsIt != pointsItEnd)
  {
    outputPoint.CastFrom(pointsIt.Value());
    output->SetPoint(pointsIt.Index(), outputPoint);
    ++pointsIt;
  }

  // Copy Edge Cells
  InputCellsContainerIterator cellIt = decimatedMesh->GetEdgeCells()->Begin();
  InputCellsContainerIterator cellItEnd = decimatedMesh->GetEdgeCells()->End();
  InputEdgeCellType *         qeCell;
  InputQEPrimal *             qeGeometry;

  while (cellIt != cellItEnd)
  {
    qeCell = dynamic_cast<InputEdgeCellType *>(cellIt.Value());
    qeGeometry = qeCell->GetQEGeom();
    output->AddEdgeWithSecurePointList(qeGeometry->GetOrigin(), qeGeometry->GetDestination());
    ++cellIt;
  }

  // Copy cells
  cellIt = decimatedMesh->GetCells()->Begin();
  cellItEnd = decimatedMesh->GetCells()->End();
  InputPolygonCellType * polygonCell;

  while (cellIt != cellItEnd)
  {
    polygonCell = dynamic_cast<InputPolygonCellType *>(cellIt.Value());
    if (polygonCell)
    {
      InputPointIdList points;

      for (InputPointsIdInternalIterator pit = polygonCell->InternalPointIdsBegin();
           pit != polygonCell->InternalPointIdsEnd();
           ++pit)
      {
        points.push_back((*pit));
      }
      output->AddFaceWithSecurePointList(points);
    }
    ++cellIt;
  }
}


template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::CleanPoints()
{
  OutputMeshPointer output = this->GetOutput();

  OutputPointsContainerIterator p_it = output->GetPoints()->Begin();
  OutputPointsContainerIterator p_end = output->GetPoints()->End();
  OutputPointIdentifier         id(0);

  while (p_it != p_end)
  {
    id = p_it->Index();
    if (output->FindEdge(id) == nullptr)
    {
      output->DeletePoint(id);
    }
    ++p_it;
  }

  output->SqueezePointsIds();
}


template <typename TInputMesh, typename TOutputMesh>
void
CleanQuadEdgeMeshFilter<TInputMesh, TOutputMesh>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);
  os << indent << "AbsoluteTolerance: " << m_AbsoluteTolerance << std::endl;
  os << indent << "RelativeTolerance: " << m_RelativeTolerance << std::endl;
}

} // end namespace itk

#endif