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
|
/*=========================================================================
Program: Visualization Toolkit
Module: TestGPURayCastBlendModes.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.
=========================================================================*/
// Description
// This test renders a simple cube volume using different blend modes
#include "vtkCamera.h"
#include "vtkColorTransferFunction.h"
#include "vtkGPUVolumeRayCastMapper.h"
#include "vtkImageData.h"
#include "vtkNew.h"
#include "vtkPiecewiseFunction.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkVolume.h"
#include "vtkVolumeProperty.h"
int TestGPURayCastBlendModes(int argc, char *argv[])
{
cout << "CTEST_FULL_OUTPUT (Avoid ctest truncation of output)" << endl;
int dims[3] = {100, 100, 100};
int boundary[3] = {10, 10, 10};
// Create a vtkImageData with two components
vtkNew<vtkImageData> image;
image->SetDimensions(dims[0], dims[1], dims[2]);
image->AllocateScalars(VTK_UNSIGNED_CHAR, 1);
// Fill the first half rectangular parallelopiped along X with the
// first component values and the second half with second component values
unsigned char * ptr =
static_cast<unsigned char *> (image->GetScalarPointer(0, 0, 0));
for (int z = 0; z < dims[2]; ++z)
{
for (int y = 0; y < dims[1]; ++y)
{
for (int x = 0; x < dims[0]; ++x)
{
if ((z < boundary[2] || z > (dims[2] - boundary[2] - 1)) ||
(y < boundary[1] || y > (dims[1] - boundary[1] - 1)) ||
(x < boundary[0] || x > (dims[0] - boundary[0] - 1)))
{
*ptr++ = 255;
}
else
{
*ptr++ = 0;
}
}
}
}
vtkNew<vtkColorTransferFunction> color;
color->AddRGBPoint(0.0, 0.2, 0.3, 0.6);
color->AddRGBPoint(255.0, 0.2, 0.6, 0.3);
vtkNew<vtkPiecewiseFunction> opacity;
opacity->AddPoint(0.0, 0.0);
opacity->AddPoint(255.0, 0.8);
vtkNew<vtkVolumeProperty> property;
property->SetScalarOpacity(opacity.GetPointer());
property->SetColor(color.GetPointer());
vtkNew<vtkVolume> volume[4];
vtkNew<vtkGPUVolumeRayCastMapper> mapper[4];
mapper[0]->SetBlendModeToMaximumIntensity();
mapper[1]->SetBlendModeToMinimumIntensity();
mapper[2]->SetBlendModeToAdditive();
mapper[3]->SetBlendModeToAverageIntensity();
vtkNew<vtkRenderWindow> renWin;
renWin->SetMultiSamples(0);
renWin->SetSize(301, 300); // Intentional NPOT size
vtkNew<vtkRenderer> renderer[4];
renderer[0]->SetViewport(0.0, 0.0, 0.5, 0.5);
renderer[1]->SetViewport(0.5, 0.0, 1.0, 0.5);
renderer[2]->SetViewport(0.0, 0.5, 0.5, 1.0);
renderer[3]->SetViewport(0.5, 0.5, 1.0, 1.0);
for (int i = 0; i < 4; ++i)
{
mapper[i]->SetInputData(image.GetPointer());
volume[i]->SetMapper(mapper[i].GetPointer());
volume[i]->SetProperty(property.GetPointer());
renderer[i]->AddVolume(volume[i].GetPointer());
renderer[i]->SetBackground(0.3, 0.3, 0.3);
renderer[i]->GetActiveCamera()->Yaw(20.0);
renderer[i]->ResetCamera();
renWin->AddRenderer(renderer[i].GetPointer());
}
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin.GetPointer());
renWin->Render();
int retVal = vtkTesting::Test(argc, argv, renWin.GetPointer(), 15);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
if ((retVal == vtkTesting::PASSED) || (retVal == vtkTesting::DO_INTERACTOR))
{
return EXIT_SUCCESS;
}
else
{
return EXIT_FAILURE;
}
}
|
