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

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Revision 1081 - (show annotations)
Wed Apr 11 06:13:46 2007 UTC (13 years, 7 months ago) by jongui
File MIME type: text/x-python
File size: 1318 byte(s)
Made some updates to the guide.
1 # Import the necessary modules
2 from esys.pyvisi import Scene, DataCollector, VelocityOnPlaneCut, Camera
3 from esys.pyvisi.constant import *
4
5 PYVISI_EXAMPLE_MESHES_PATH = "data_meshes/"
6 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images/"
7 X_SIZE = 400
8 Y_SIZE = 400
9
10 VECTOR_FIELD_CELL_DATA = "velocity"
11 FILE_3D = "interior_3D.xml"
12 IMAGE_NAME = "velocity.jpg"
13 JPG_RENDERER = Renderer.ONLINE_JPG
14
15
16 # Create a Scene with four viewports
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 dc1.setFileName(file_name = PYVISI_EXAMPLE_MESHES_PATH + FILE_3D)
23 dc1.setActiveVector(vector = VECTOR_FIELD_CELL_DATA)
24
25 # Create VelocityOnPlaneCut.
26 vopc1 = VelocityOnPlaneCut(scene = s, data_collector = dc1,
27 viewport = Viewport.SOUTH_WEST, color_mode = ColorMode.VECTOR,
28 arrow = Arrow.THREE_D, lut = Lut.COLOR, cell_to_point = False,
29 outline = True)
30 vopc1.setScaleFactor(scale_factor = 0.5)
31 vopc1.setPlaneToXY(offset = 0.5)
32 vopc1.setRatio(2)
33 vopc1.randomOn()
34
35 # Create a Camera.
36 c1 = Camera(scene = s, data_collector = dc1, viewport = Viewport.SOUTH_WEST)
37 c1.isometricView()
38 c1.elevation(angle = -20)
39
40 # Render the object.
41 s.render(PYVISI_EXAMPLE_IMAGES_PATH + IMAGE_NAME)
42

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