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
|
#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
# Parameters for debugging
NPts = 100000
# create pipeline
#
points = vtk.vtkPointSource()
points.SetNumberOfPoints(NPts)
points.SetRadius(5)
# create some scalars based on implicit function
# Create a cylinder
cyl = vtk.vtkCylinder()
cyl.SetCenter(0,0,0)
cyl.SetRadius(0.1)
# Generate scalars and vector
sample = vtk.vtkSampleImplicitFunctionFilter()
sample.SetInputConnection(points.GetOutputPort())
sample.SetImplicitFunction(cyl)
sample.Update()
print(sample.GetOutput().GetScalarRange())
# Draw the points
sampleMapper = vtk.vtkPointGaussianMapper()
sampleMapper.SetInputConnection(sample.GetOutputPort(0))
sampleMapper.EmissiveOff()
sampleMapper.SetScaleFactor(0.0)
sampleMapper.SetScalarRange(0,20)
sampleActor = vtk.vtkActor()
sampleActor.SetMapper(sampleMapper)
# Create an outline
outline = vtk.vtkOutlineFilter()
outline.SetInputConnection(sample.GetOutputPort())
outlineMapper = vtk.vtkPolyDataMapper()
outlineMapper.SetInputConnection(outline.GetOutputPort())
outlineActor = vtk.vtkActor()
outlineActor.SetMapper(outlineMapper)
# Create the RenderWindow, Renderer and both Actors
#
ren0 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren0)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# Add the actors to the renderer, set the background and size
#
ren0.AddActor(sampleActor)
ren0.AddActor(outlineActor)
ren0.SetBackground(0.1, 0.2, 0.4)
renWin.SetSize(250,250)
cam = ren0.GetActiveCamera()
cam.SetFocalPoint(0,0,0)
cam.SetPosition(1,1,1)
ren0.ResetCamera()
iren.Initialize()
# render the image
#
renWin.Render()
#iren.Start()
|
