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
|
#!/usr/bin/env python
# This example demonstrates how to combine a "geometric" implicit
# function with noise at different frequencies to produce the
# appearance of a landscape.
import vtk
plane = vtk.vtkPlane()
p1 = vtk.vtkPerlinNoise()
p1.SetFrequency(1, 1, 0)
p2 = vtk.vtkPerlinNoise()
p2.SetFrequency(3, 5, 0)
p2.SetPhase(0.5, 0.5, 0)
p3 = vtk.vtkPerlinNoise()
p3.SetFrequency(16, 16, 0)
sum = vtk.vtkImplicitSum()
sum.SetNormalizeByWeight(1)
sum.AddFunction(plane)
sum.AddFunction(p1, 0.2)
sum.AddFunction(p2, 0.1)
sum.AddFunction(p3, 0.02)
sample = vtk.vtkSampleFunction()
sample.SetImplicitFunction(sum)
sample.SetSampleDimensions(65, 65, 20)
sample.SetModelBounds(-1, 1, -1, 1, -0.5, 0.5)
sample.ComputeNormalsOff()
surface = vtk.vtkContourFilter()
surface.SetInputConnection(sample.GetOutputPort())
surface.SetValue(0, 0.0)
smooth = vtk.vtkPolyDataNormals()
smooth.SetInputConnection(surface.GetOutputPort())
smooth.SetFeatureAngle(90)
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(smooth.GetOutputPort())
mapper.ScalarVisibilityOff()
actor = vtk.vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().SetColor(0.4, 0.2, 0.1)
# Create the renderer etc.
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# Add the actors to the renderer, set the background and size
ren.AddActor(actor)
ren.SetBackground(1, 1, 1)
renWin.SetSize(500, 500)
ren.ResetCamera()
ren.GetActiveCamera().Elevation(-45)
ren.GetActiveCamera().Azimuth(10)
ren.GetActiveCamera().Dolly(1.35)
ren.ResetCameraClippingRange()
iren.Initialize()
renWin.Render()
iren.Start()
|
