1 /*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: TestGPURayCastVolumeScale.cxx
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14 =========================================================================*/
15 // This test covers additive method.
16 // This test volume renders a synthetic dataset with unsigned char values,
17 // with the additive method.
18
19 #include <vtkCamera.h>
20 #include <vtkColorTransferFunction.h>
21 #include <vtkDataArray.h>
22 #include <vtkGPUVolumeRayCastMapper.h>
23 #include <vtkImageChangeInformation.h>
24 #include <vtkImageData.h>
25 #include <vtkImageReader.h>
26 #include <vtkImageShiftScale.h>
27 #include <vtkNew.h>
28 #include <vtkOutlineFilter.h>
29 #include <vtkPiecewiseFunction.h>
30 #include <vtkPointData.h>
31 #include <vtkPolyDataMapper.h>
32 #include <vtkRegressionTestImage.h>
33 #include <vtkRenderWindow.h>
34 #include <vtkRenderWindowInteractor.h>
35 #include <vtkRenderer.h>
36 #include <vtkSmartPointer.h>
37 #include <vtkTestUtilities.h>
38 #include <vtkTimerLog.h>
39 #include <vtkVolumeProperty.h>
40 #include <vtkXMLImageDataReader.h>
41
TestGPURayCastVolumeScale(int argc,char * argv[])42 int TestGPURayCastVolumeScale(int argc, char *argv[])
43 {
44 double scalarRange[2];
45
46 vtkNew<vtkActor> outlineActor;
47 vtkNew<vtkPolyDataMapper> outlineMapper;
48 vtkNew<vtkGPUVolumeRayCastMapper> volumeMapper;
49
50 vtkNew<vtkXMLImageDataReader> reader;
51 const char* volumeFile = vtkTestUtilities::ExpandDataFileName(
52 argc, argv, "Data/vase_1comp.vti");
53 reader->SetFileName(volumeFile);
54
55 vtkSmartPointer<vtkImageChangeInformation> changeInformation =
56 vtkSmartPointer<vtkImageChangeInformation>::New();
57 changeInformation->SetInputConnection(reader->GetOutputPort());
58 changeInformation->SetOutputSpacing(1, 2, 3);
59 changeInformation->SetOutputOrigin(10, 20, 30);
60 changeInformation->Update();
61 volumeMapper->SetInputConnection(changeInformation->GetOutputPort());
62
63 // Add outline filter
64 vtkNew<vtkOutlineFilter> outlineFilter;
65 outlineFilter->SetInputConnection(changeInformation->GetOutputPort());
66 outlineMapper->SetInputConnection(outlineFilter->GetOutputPort());
67 outlineActor->SetMapper(outlineMapper.GetPointer());
68
69 volumeMapper->GetInput()->GetScalarRange(scalarRange);
70 volumeMapper->SetBlendModeToComposite();
71
72 vtkNew<vtkRenderWindow> renWin;
73 vtkNew<vtkRenderer> ren;
74 renWin->AddRenderer(ren.GetPointer());
75 renWin->SetSize(400, 400);
76 ren->SetBackground(0.2, 0.2, 0.5);
77
78 vtkNew<vtkRenderWindowInteractor> iren;
79 iren->SetRenderWindow(renWin.GetPointer());
80
81 vtkNew<vtkPiecewiseFunction> scalarOpacity;
82 scalarOpacity->AddPoint(scalarRange[0], 0.0);
83 scalarOpacity->AddPoint(scalarRange[1], 1.0);
84
85 vtkNew<vtkVolumeProperty> volumeProperty;
86 volumeProperty->ShadeOff();
87 volumeProperty->SetInterpolationType(VTK_LINEAR_INTERPOLATION);
88
89 volumeProperty->SetScalarOpacity(scalarOpacity.GetPointer());
90
91 vtkSmartPointer<vtkColorTransferFunction> colorTransferFunction =
92 volumeProperty->GetRGBTransferFunction(0);
93 colorTransferFunction->RemoveAllPoints();
94 colorTransferFunction->AddRGBPoint(scalarRange[0], 0.0, 0.0, 0.0);
95 colorTransferFunction->AddRGBPoint(scalarRange[1], 1.0, 1.0, 1.0);
96
97 vtkNew<vtkVolume> volume;
98 volume->SetMapper(volumeMapper.GetPointer());
99 volume->SetProperty(volumeProperty.GetPointer());
100
101 ren->AddViewProp(volume.GetPointer());
102 ren->AddActor(outlineActor.GetPointer());
103
104 renWin->Render();
105 ren->ResetCamera();
106
107 iren->Initialize();
108
109 int retVal = vtkRegressionTestImage( renWin.GetPointer() );
110 if( retVal == vtkRegressionTester::DO_INTERACTOR)
111 {
112 iren->Start();
113 }
114
115 return !retVal;
116 }
117