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

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Revision 1147 - (show annotations)
Wed May 16 06:39:11 2007 UTC (12 years, 2 months ago) by ksteube
File MIME type: text/x-python
File size: 1028 byte(s)
Added back in some files that were accidentally deleted.

1 """
2 @author: John NGUI
3 """
4
5 import vtk
6
7 class Arrow2D:
8 """
9 Class that defines 2D arrows.
10 """
11
12 def __init__(self):
13 """
14 Initialise the 2D arrows.
15 """
16
17 self.__vtk_arrow2D = vtk.vtkGlyphSource2D()
18 self.__setupArrow2D()
19
20 def __setupArrow2D(self):
21 """
22 Setup the 2D arrows.
23 """
24
25 # Use arrows instead of cone or sphere.
26 self.__vtk_arrow2D.SetGlyphTypeToArrow()
27 # Fill the inside of the arrows.
28 self.__vtk_arrow2D.SetFilled(0)
29
30 def _getOutput(self):
31 """
32 Return the output of the 2D arrows.
33
34 @rtype: vtkPolyData
35 @return: Polygonal data
36 """
37
38 return self.__vtk_arrow2D.GetOutput()
39
40
41 ###############################################################################
42
43
44 class Arrow3D:
45 """
46 Class that defines 3D arrows.
47 """
48
49 def __init__(self):
50 """
51 Initialise the 3D arrows.
52 """
53
54 self.__vtk_arrow3D = vtk.vtkArrowSource()
55
56 def _getOutput(self):
57 """
58 Return the output of the 3D arrows.
59
60 @rtype: vtkPolyData
61 @return Polygonal data
62 """
63
64 return self.__vtk_arrow3D.GetOutput()
65

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