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
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
=========================================================================
Program: Visualization Toolkit
Module: TestGPURayCastIndependentComponent.py
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.
=========================================================================
'''
import sys
import vtk
import vtk.test.Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
'''
Prevent .pyc files from being created.
Stops the vtk source being polluted
by .pyc files.
'''
sys.dont_write_bytecode = True
class TestGPURayCastIndependentComponent(vtk.test.Testing.vtkTest):
def test(self):
dataRoot = vtkGetDataRoot()
reader = vtk.vtkXMLImageDataReader()
reader.SetFileName("" + str(dataRoot) + "/Data/vase_4comp.vti")
volume = vtk.vtkVolume()
#mapper = vtk.vtkFixedPointVolumeRayCastMapper()
mapper = vtk.vtkGPUVolumeRayCastMapper()
mapper.SetSampleDistance(0.1)
mapper.SetAutoAdjustSampleDistances(0)
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
iRen = vtk.vtkRenderWindowInteractor()
# Set connections
mapper.SetInputConnection(reader.GetOutputPort());
volume.SetMapper(mapper)
ren.AddViewProp(volume)
renWin.AddRenderer(ren)
iRen.SetRenderWindow(renWin)
# Define opacity transfer function and color functions
opacityFunc1 = vtk.vtkPiecewiseFunction()
opacityFunc1.AddPoint(0.0, 0.0);
opacityFunc1.AddPoint(60.0, 0.1);
opacityFunc1.AddPoint(255.0, 0.0);
opacityFunc2 = vtk.vtkPiecewiseFunction()
opacityFunc2.AddPoint(0.0, 0.0);
opacityFunc2.AddPoint(60.0, 0.0);
opacityFunc2.AddPoint(120.0, 0.1);
opacityFunc1.AddPoint(255.0, 0.0);
opacityFunc3 = vtk.vtkPiecewiseFunction()
opacityFunc3.AddPoint(0.0, 0.0);
opacityFunc3.AddPoint(120.0, 0.0);
opacityFunc3.AddPoint(180.0, 0.1);
opacityFunc3.AddPoint(255.0, 0.0);
opacityFunc4 = vtk.vtkPiecewiseFunction()
opacityFunc4.AddPoint(0.0, 0.0);
opacityFunc4.AddPoint(180.0, 0.0);
opacityFunc4.AddPoint(255.0, 0.1);
# Color transfer functions
color1 = vtk.vtkColorTransferFunction()
color1.AddRGBPoint(0.0, 1.0, 0.0, 0.0);
color1.AddRGBPoint(60.0, 1.0, 0.0, 0.0);
color2 = vtk.vtkColorTransferFunction()
color2.AddRGBPoint(60.0, 0.0, 0.0, 1.0);
color2.AddRGBPoint(120.0, 0.0, 0.0, 1.0);
color3 = vtk.vtkColorTransferFunction()
color3.AddRGBPoint(120.0, 0.0, 1.0, 0.0);
color3.AddRGBPoint(180.0, 0.0, 1.0, 0.0);
color4 = vtk.vtkColorTransferFunction()
color4.AddRGBPoint(180.0, 0.0, 0.0, 0.0);
color4.AddRGBPoint(239.0, 0.0, 0.0, 0.0);
# Now set the opacity and the color
volumeProperty = volume.GetProperty()
volumeProperty.SetIndependentComponents(1)
volumeProperty.SetScalarOpacity(0, opacityFunc1)
volumeProperty.SetScalarOpacity(1, opacityFunc2)
volumeProperty.SetScalarOpacity(2, opacityFunc3)
volumeProperty.SetScalarOpacity(3, opacityFunc4)
volumeProperty.SetColor(0, color1)
volumeProperty.SetColor(1, color2)
volumeProperty.SetColor(2, color3)
volumeProperty.SetColor(3, color4)
iRen.Initialize();
ren.SetBackground(0.1,0.4,0.2)
ren.ResetCamera()
renWin.Render()
img_file = "TestGPURayCastIndependentComponent.png"
vtk.test.Testing.compareImage(
iRen.GetRenderWindow(), vtk.test.Testing.getAbsImagePath(img_file), threshold=10)
vtk.test.Testing.interact()
if __name__ == "__main__":
vtk.test.Testing.main([(TestGPURayCastIndependentComponent, 'test')])
|
