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
|
/*=========================================================================
Program: Visualization Toolkit
Module: TestGDALVectorReader.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkGDALVectorReader.h"
// VTK includes
#include <vtkActor.h>
#include <vtkCellData.h>
#include <vtkCompositePolyDataMapper.h>
#include <vtkDataSetAttributes.h>
#include <vtkDoubleArray.h>
#include <vtkLookupTable.h>
#include <vtkMapper.h>
#include <vtkMultiBlockDataSet.h>
#include <vtkNew.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRegressionTestImage.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkTestUtilities.h>
// C++ includes
#include <sstream>
// Main program
int TestGDALVectorReader(int argc, char* argv[])
{
const char* vectorFileName = vtkTestUtilities::ExpandDataFileName(argc, argv,
"Data/GIS/countries.shp");
// Create reader to read shape file.
vtkNew<vtkGDALVectorReader> reader;
reader->SetFileName(vectorFileName);
reader->AddFeatureIdsOn();
delete [] vectorFileName;
// Test layer information helpers
reader->UpdateInformation();
int nl = reader->GetNumberOfLayers();
for (int i = 0; i < nl; ++i)
{
reader->SetActiveLayer(i);
cout
<< "Layer " << i
<< " Type " << reader->GetActiveLayerType()
<< " FeatureCount " << reader->GetActiveLayerFeatureCount()
<< "\n";
}
reader->SetActiveLayer(0); // Read only layer 0, which is the only layer.
reader->Update();
// We need a renderer
vtkNew<vtkRenderer> renderer;
// Get the data
vtkSmartPointer<vtkMultiBlockDataSet> mbds = reader->GetOutput();
// Verify that feature IDs exist as a scalar (assuming first block exists)
if (mbds && mbds->GetNumberOfBlocks() > 0)
{
vtkPolyData* pd = vtkPolyData::SafeDownCast(mbds->GetBlock(0));
vtkCellData* cd = pd ? pd->GetCellData() : NULL;
if (cd)
{
if (!cd->GetPedigreeIds())
{
cerr << "Unable to find pedigree IDs even though AddFeatureIds was ON\n";
return 1;
}
}
}
// Create scene
vtkNew<vtkActor> actor;
vtkNew<vtkCompositePolyDataMapper> mapper;
// Create an interesting lookup table
vtkNew<vtkLookupTable> lut;
lut->SetTableRange(1.0, 8.0);
lut->SetValueRange(0.6, 0.9);
lut->SetHueRange(0.0, 0.8);
lut->SetSaturationRange(0.0, 0.7);
lut->SetNumberOfColors(8);
lut->Build();
mapper->SetInputDataObject(mbds);
mapper->SelectColorArray("mapcolor8");
mapper->SetScalarModeToUseCellFieldData();
mapper->SetScalarVisibility(1);
mapper->UseLookupTableScalarRangeOn();
mapper->SetLookupTable(lut.GetPointer());
mapper->SetColorModeToMapScalars();
actor->SetMapper(mapper.GetPointer());
actor->GetProperty()->SetLineWidth(1.4f);
renderer->AddActor(actor.GetPointer());
// Create a render window, and an interactor
vtkNew<vtkRenderWindow> renderWindow;
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindow->AddRenderer(renderer.GetPointer());
renderWindowInteractor->SetRenderWindow(renderWindow.GetPointer());
//Add the actor to the scene
renderer->SetBackground(1.0, 1.0, 1.0);
renderWindow->SetSize(400, 400);
renderWindow->Render();
renderer->ResetCamera();
renderWindow->Render();
int retVal = vtkRegressionTestImage(renderWindow.GetPointer());
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
renderWindowInteractor->Start();
}
return !retVal;
}
|
