/[escript]/trunk/pyvisi/py_src/rotation.py
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Contents of /trunk/pyvisi/py_src/rotation.py

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Revision 1211 - (show annotations)
Wed Jul 4 05:16:46 2007 UTC (12 years, 1 month ago) by jongui
File MIME type: text/x-python
File size: 1972 byte(s)
- Fixed some minor bugs.
- Added a new feature called 'MapOnScalarClipWithRotation' that clips a two-dimensional data with a scalar value and subsequently rotating it to create a three-dimensional effect.
- Corresponding examples, test cases and documentation of the new module have also been added.
1 """
2 @var __author__: name of author
3 @var __copyright__: copyrights
4 @var __license__: licence agreement
5 @var __url__: url entry point on documentation
6 @var __version__: version
7 @var __date__: date of the version
8 """
9
10 __author__="John Ngui, john.ngui@uq.edu.au"
11 __copyright__=""" Copyright (c) 2006 by ACcESS MNRF
12 http://www.access.edu.au
13 Primary Business: Queensland, Australia"""
14 __license__="""Licensed under the Open Software License version 3.0
15 http://www.opensource.org/licenses/osl-3.0.php"""
16 __url__="http://www.iservo.edu.au/esys"
17 __version__="$Revision$"
18 __date__="$Date$"
19
20
21 import vtk
22
23 class Rotation:
24 """
25 Class that sweeps 2D data around the z-axis to create a 3D looking effect.
26 """
27
28 def __init__(self):
29 """
30 Initialise the rotation.
31 """
32
33 self.__vtk_rotational_extrusion_filter = \
34 vtk.vtkRotationalExtrusionFilter()
35
36 def _setupRotationExtrusionFilter(self, object):
37 """
38 Setup the rotation.
39
40 @type object: vtkUnstructuredGrid, etc
41 @param object: Input for the clipper
42 """
43
44 self.__object = object
45 self.__setInput()
46
47 def __setInput(self):
48 """
49 Set the input for the rotation.
50 """
51
52 self.__vtk_rotational_extrusion_filter.SetInput(self.__object)
53 self.__vtk_rotational_extrusion_filter.Update()
54
55 def setResolution(self, resolution):
56 """
57 Set the resolution of the sweep for the rotation, which controls the
58 number of intermediate points
59
60 @type resolution: Number
61 @param resolution: Resolution of the rotation
62 """
63
64 self.__vtk_rotational_extrusion_filter.SetResolution(resolution)
65
66 def setAngle(self, angle):
67 """
68 Set the angle of rotation.
69
70 @type angle: Number
71 @param angle: Angle of rotation
72 """
73
74 self.__vtk_rotational_extrusion_filter.SetAngle(angle)
75
76 def _getRotationOutput(self):
77 """
78 Return the output of the rotation.
79
80 @rtype: vtkPolyData
81 @return: Polygonal data
82 """
83
84 return self.__vtk_rotational_extrusion_filter.GetOutput()
85

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