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
|
/*=========================================================================
*
* 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 itkQuadricDecimationQuadEdgeMeshFilter_hxx
#define itkQuadricDecimationQuadEdgeMeshFilter_hxx
namespace itk
{
template <typename TInput, typename TOutput, typename TCriterion>
void
QuadricDecimationQuadEdgeMeshFilter<TInput, TOutput, TCriterion>::Initialize()
{
OutputMeshPointer output = this->GetOutput();
OutputPointsContainerPointer points = output->GetPoints();
OutputPointsContainerIterator it = points->Begin();
OutputPointIdentifier p_id;
OutputQEType * qe;
OutputQEType * qe_it;
OutputMeshType * outputMesh = this->GetOutput();
while (it != points->End())
{
p_id = it->Index();
qe = output->FindEdge(p_id);
if (qe != nullptr)
{
qe_it = qe;
do
{
QuadricAtOrigin(qe_it, m_Quadric[p_id], outputMesh);
qe_it = qe_it->GetOnext();
} while (qe_it != qe);
}
++it;
}
}
template <typename TInput, typename TOutput, typename TCriterion>
void
QuadricDecimationQuadEdgeMeshFilter<TInput, TOutput, TCriterion>::DeletePoint(
const OutputPointIdentifier & iIdToBeDeleted,
const OutputPointIdentifier & iRemaining)
{
Superclass::DeletePoint(iIdToBeDeleted, iRemaining);
auto it = m_Quadric.find(iIdToBeDeleted);
m_Quadric[iRemaining] += it->second;
m_Quadric.erase(it);
}
template <typename TInput, typename TOutput, typename TCriterion>
auto
QuadricDecimationQuadEdgeMeshFilter<TInput, TOutput, TCriterion>::Relocate(OutputQEType * iEdge) -> OutputPointType
{
OutputPointIdentifier id_org = iEdge->GetOrigin();
OutputPointIdentifier id_dest = iEdge->GetDestination();
QuadricElementType Q = m_Quadric[id_org] + m_Quadric[id_dest];
OutputMeshPointer output = this->GetOutput();
OutputPointType org = output->GetPoint(id_org);
OutputPointType dest = output->GetPoint(id_dest);
OutputPointType mid;
mid.SetToMidPoint(org, dest);
return Q.ComputeOptimalLocation(mid);
}
} // namespace itk
#endif
|
