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
|
#!/usr/bin/env python
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkFiltersCore import vtkGlyph3D
from vtkmodules.vtkFiltersSources import (
vtkConeSource,
vtkSphereSource,
)
from vtkmodules.vtkRenderingCore import (
vtkPolyDataMapper,
vtkRenderWindow,
vtkRenderWindowInteractor,
vtkRenderer,
)
from vtkmodules.vtkRenderingLOD import vtkLODActor
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
def GetRGBColor(colorName):
'''
Return the red, green and blue components for a
color as doubles.
'''
rgb = [0.0, 0.0, 0.0] # black
vtkNamedColors().GetColorRGB(colorName, rgb)
return rgb
ren1 = vtkRenderer()
renWin = vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# create a sphere source and actor
#
sphere = vtkSphereSource()
sphereMapper = vtkPolyDataMapper()
sphereMapper.SetInputConnection(sphere.GetOutputPort())
sphereActor = vtkLODActor()
sphereActor.SetMapper(sphereMapper)
sphereActor.GetProperty().SetDiffuseColor(GetRGBColor('banana'))
sphereActor.GetProperty().SetSpecular(.4)
sphereActor.GetProperty().SetSpecularPower(20)
# create the spikes using a cone source and the sphere source
#
cone = vtkConeSource()
cone.SetResolution(20)
glyph = vtkGlyph3D()
glyph.SetInputConnection(sphere.GetOutputPort())
glyph.SetSourceConnection(cone.GetOutputPort())
glyph.SetVectorModeToUseNormal()
glyph.SetScaleModeToScaleByVector()
glyph.SetScaleFactor(0.25)
spikeMapper = vtkPolyDataMapper()
spikeMapper.SetInputConnection(glyph.GetOutputPort())
spikeActor = vtkLODActor()
spikeActor.SetMapper(spikeMapper)
spikeActor.GetProperty().SetDiffuseColor(GetRGBColor('tomato'))
spikeActor.GetProperty().SetSpecular(.4)
spikeActor.GetProperty().SetSpecularPower(20)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(sphereActor)
ren1.AddActor(spikeActor)
ren1.SetBackground(0.1, 0.2, 0.4)
renWin.SetSize(300, 300)
# render the image
#
ren1.ResetCamera()
cam1 = ren1.GetActiveCamera()
cam1.Zoom(1.4)
cam1.Azimuth(30)
cam1.Elevation(30)
renWin.Render()
iren.FlyTo(ren1, 0.37723, 0.154699, 0.204326)
#iren.Start()
|
