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
|
/*=========================================================================
*
* 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.
*
*=========================================================================*/
#include <iostream>
#include "itkQuadEdgeMesh.h"
#include "itkBinaryMask3DMeshSource.h"
#include "itkImageRegionIteratorWithIndex.h"
int
itkBinaryMask3DQuadEdgeMeshSourceTest(int, char *[])
{
// Define the dimension of the images
constexpr unsigned int Dimension = 3;
// Declare the types of the output images
using ImageType = itk::Image<unsigned short, Dimension>;
// Declare the type of the index,size and region to initialize images
using IndexType = itk::Index<Dimension>;
using SizeType = itk::Size<Dimension>;
using RegionType = itk::ImageRegion<Dimension>;
using PixelType = ImageType::PixelType;
using IteratorType = itk::ImageRegionIteratorWithIndex<ImageType>;
// Declare the type of the Mesh
using MeshType = itk::QuadEdgeMesh<double, 3>;
using PointType = MeshType::PointType;
using MeshSourceType = itk::BinaryMask3DMeshSource<ImageType, MeshType>;
constexpr PixelType backgroundValue = 0;
constexpr PixelType internalValue = 1;
SizeType size;
size[0] = 128;
size[1] = 128;
size[2] = 128;
IndexType start;
start.Fill(0);
RegionType region{ start, size };
auto image = ImageType::New();
image->SetRegions(region);
image->Allocate();
image->FillBuffer(backgroundValue);
IteratorType it(image, region);
it.GoToBegin();
PointType point;
PointType center;
PointType::VectorType radial;
IndexType centralIndex = start;
centralIndex[0] += size[0] / 2;
centralIndex[1] += size[1] / 2;
centralIndex[2] += size[2] / 2;
image->TransformIndexToPhysicalPoint(centralIndex, center);
//
// Create a digitized sphere in the middle of the image.
//
while (!it.IsAtEnd())
{
image->TransformIndexToPhysicalPoint(it.GetIndex(), point);
radial = point - center;
if (radial.GetNorm() < 60.0)
{
it.Set(internalValue);
}
++it;
}
auto meshSource = MeshSourceType::New();
meshSource->SetInput(image);
meshSource->SetObjectValue(internalValue);
try
{
meshSource->Update();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Exception thrown during Update() " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
std::cout << meshSource->GetNumberOfNodes() << std::endl;
std::cout << meshSource->GetNumberOfCells() << std::endl;
return EXIT_SUCCESS;
}
|
