/[escript]/trunk/doc/examples/pyvisi/poisson_with_pyvisi.py
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Revision 1153 - (hide annotations)
Thu May 17 06:33:54 2007 UTC (12 years, 3 months ago) by jongui
File MIME type: text/x-python
File size: 1182 byte(s)
Made some minor modifications and fixed minor bugs. Most tests appear to pass on the Altix although there are two tests which occasionally throw an error related to memory corruption.
1 ksteube 1147 # Import the necesary modules.
2     from esys.escript import *
3     from esys.escript.linearPDEs import Poisson
4     from esys.finley import Rectangle
5     from esys.pyvisi import Scene, DataCollector, Map, Camera
6     from esys.pyvisi.constant import *
7 jongui 1148 import os
8 ksteube 1147
9 jongui 1148 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
10 ksteube 1147 X_SIZE = 400
11     Y_SIZE = 300
12     JPG_RENDERER = Renderer.ONLINE_JPG
13    
14     # generate domain:
15     mydomain = Rectangle(l0=1.,l1=1.,n0=40, n1=20)
16 jongui 1153 # define characteristic function of Gamma
17 ksteube 1147 x = mydomain.getX()
18     gammaD = whereZero(x[0])+whereZero(x[1])
19     # define PDE and get its solution u
20     mypde = Poisson(domain=mydomain)
21     mypde.setValue(f=1,q=gammaD)
22     u = mypde.getSolution()
23    
24     # Create a Scene.
25     s = Scene(renderer = JPG_RENDERER, x_size = X_SIZE, y_size = Y_SIZE)
26    
27     # Create a DataCollector reading directly from an escript object.
28     dc = DataCollector(source = Source.ESCRIPT)
29     dc.setData(sol = u)
30    
31     # Create a Map.
32     Map(scene = s, data_collector = dc, viewport = Viewport.SOUTH_WEST,
33     lut = Lut.COLOR, cell_to_point = False, outline = True)
34    
35     # Create a Camera.
36 jongui 1148 c = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
37 ksteube 1147
38     # Render the object.
39 jongui 1148 s.render(image_name = os.path.join(PYVISI_EXAMPLE_IMAGES_PATH, "poisson.jpg"))

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