/[escript]/trunk/doc/examples/pyvisi/streamline.py
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Annotation of /trunk/doc/examples/pyvisi/streamline.py

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Revision 1194 - (hide annotations)
Thu Jun 14 05:53:49 2007 UTC (13 years, 2 months ago) by jongui
File MIME type: text/x-python
File size: 1179 byte(s)
- Fixed a minor bug in the Camera module.
- Added some extra capability to the Movie module.
- The Camera module now has the capability to perform parallel projection by calling the 'parallelProjectionOn' method.
- The Camera at this stage is only capable of zooming towards the rendered object using 'dolly'. However, it appears that 'dolly' cannot be used to perform zooming out.
1 ksteube 1147 # Import the necessary modules.
2     from esys.pyvisi import Scene, DataCollector, StreamLine, Camera
3     from esys.pyvisi.constant import *
4 jongui 1148 import os
5 ksteube 1147
6 jongui 1148 PYVISI_EXAMPLE_MESHES_PATH = "data_meshes"
7     PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
8 ksteube 1147 X_SIZE = 400
9     Y_SIZE = 400
10    
11     VECTOR_FIELD_CELL_DATA = "temperature"
12     FILE_3D = "interior_3D.xml"
13     IMAGE_NAME = "streamline.jpg"
14     JPG_RENDERER = Renderer.ONLINE_JPG
15    
16     # Create a Scene.
17     s = Scene(renderer = JPG_RENDERER, num_viewport = 1, x_size = X_SIZE,
18     y_size = Y_SIZE)
19    
20     # Create a DataCollector reading from a XML file.
21     dc1 = DataCollector(source = Source.XML)
22 jongui 1148 dc1.setFileName(file_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, FILE_3D))
23 ksteube 1147
24     # Create a Streamline.
25     sl1 = StreamLine(scene = s, data_collector = dc1,
26     viewport = Viewport.SOUTH_WEST, color_mode = ColorMode.SCALAR,
27     lut = Lut.COLOR, cell_to_point = False, outline = True)
28     sl1.setTubeRadius(radius = 0.02)
29 jongui 1158 sl1.setTubeNumberOfSides(3)
30     sl1.setTubeRadiusToVaryByScalar()
31 ksteube 1147
32     # Create a Camera.
33 jongui 1148 c1 = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
34 ksteube 1147 c1.isometricView()
35    
36     # Render the object.
37 jongui 1148 s.render(image_name = os.path.join(PYVISI_EXAMPLE_IMAGES_PATH, IMAGE_NAME))

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