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

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Revision 1148 - (hide annotations)
Wed May 16 22:45:33 2007 UTC (13 years, 9 months ago) by jongui
File MIME type: text/x-python
File size: 1343 byte(s)
Added the updated files for pyvisi and removed some incorrect reference images.
1 ksteube 1147 # Import the necessary modules
2     from esys.pyvisi import Scene, DataCollector, VelocityOnPlaneCut, 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 = "velocity"
12     FILE_3D = "interior_3D.xml"
13     IMAGE_NAME = "velocity.jpg"
14     JPG_RENDERER = Renderer.ONLINE_JPG
15    
16    
17     # Create a Scene with four viewports
18     s = Scene(renderer = JPG_RENDERER, num_viewport = 1, x_size = X_SIZE,
19     y_size = Y_SIZE)
20    
21     # Create a DataCollector reading from a XML file.
22     dc1 = DataCollector(source = Source.XML)
23 jongui 1148 dc1.setFileName(file_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, FILE_3D))
24 ksteube 1147 dc1.setActiveVector(vector = VECTOR_FIELD_CELL_DATA)
25    
26     # Create VelocityOnPlaneCut.
27     vopc1 = VelocityOnPlaneCut(scene = s, data_collector = dc1,
28     viewport = Viewport.SOUTH_WEST, color_mode = ColorMode.VECTOR,
29     arrow = Arrow.THREE_D, lut = Lut.COLOR, cell_to_point = False,
30     outline = True)
31     vopc1.setScaleFactor(scale_factor = 0.5)
32     vopc1.setPlaneToXY(offset = 0.5)
33     vopc1.setRatio(2)
34     vopc1.randomOn()
35    
36     # Create a Camera.
37 jongui 1148 c1 = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
38 ksteube 1147 c1.isometricView()
39     c1.elevation(angle = -20)
40    
41     # Render the object.
42 jongui 1148 s.render(image_name = os.path.join(PYVISI_EXAMPLE_IMAGES_PATH, IMAGE_NAME))
43 ksteube 1147

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