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
|
#include <vtkMutableDirectedGraph.h>
#include <vtkTree.h>
#include <vtkNew.h>
#include <vector>
#include "vtkTreeBFSIterator.h"
int TestTreeBFSIterator(int, char *[])
{
vtkNew<vtkMutableDirectedGraph> g;
// Create vertices:
// Level 0
vtkIdType v0 = g->AddVertex();
// Level 1
vtkIdType v1 = g->AddVertex();
vtkIdType v2 = g->AddVertex();
// Level 2
vtkIdType v3 = g->AddVertex();
vtkIdType v4 = g->AddVertex();
vtkIdType v5 = g->AddVertex();
// Level 3
vtkIdType v6 = g->AddVertex();
vtkIdType v7 = g->AddVertex();
vtkIdType v8 = g->AddVertex();
//create a fully connected graph
g->AddEdge(v0, v1);
g->AddEdge(v0, v2);
g->AddEdge(v1, v3);
g->AddEdge(v2, v4);
g->AddEdge(v2, v5);
g->AddEdge(v4, v6);
g->AddEdge(v4, v7);
g->AddEdge(v5, v8);
vtkNew<vtkTree> tree;
tree->CheckedShallowCopy(g.GetPointer());
std::vector<int> correctSequence;
for(int i = 0; i <= 8; i++)
{
correctSequence.push_back(i);
}
vtkNew<vtkTreeBFSIterator> bfsIterator;
bfsIterator->SetTree(tree.GetPointer());
if(bfsIterator->GetStartVertex() != tree->GetRoot())
{
cout << "StartVertex is not defaulting to root" << endl;
return EXIT_FAILURE;
}
//traverse the tree in a depth first fashion
for(size_t i = 0; i < correctSequence.size(); i++)
{
if(!bfsIterator->HasNext())
{
cout << "HasNext() returned false before the end of the tree" << endl;
return EXIT_FAILURE;
}
vtkIdType nextVertex = bfsIterator->Next();
if(nextVertex != correctSequence[i])
{
cout << "Next vertex should be " << correctSequence[i] << " but it is " << nextVertex << endl;
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
|
