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

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Revision 1569 - (show annotations)
Sat May 24 04:51:38 2008 UTC (11 years, 3 months ago) by ksteube
File MIME type: text/x-python
File size: 1708 byte(s)
Config for new installation at APAC with offscreen rendering

1 """
2 Author: Ken Steube
3 """
4
5 # Example of creating an image in a file (without the need for an X connection)
6
7 # Import the necessary modules.
8 from esys.pyvisi import Scene, DataCollector, Map, ImageReader, Image, Camera
9 from esys.pyvisi import GlobalPosition
10 from esys.pyvisi.constant import *
11 import os, sys
12
13 PYVISI_EXAMPLE_MESHES_PATH = "data_meshes"
14 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
15 X_SIZE = 400
16 Y_SIZE = 400
17
18 SCALAR_FIELD_POINT_DATA = "temperature"
19 FILE_3D = "interior_3D.xml"
20 LOAD_IMAGE_NAME = "flinders.jpg"
21 JPG_RENDERER = Renderer.OFFLINE_JPG
22
23 # Create a Scene.
24 s = Scene(renderer = JPG_RENDERER, num_viewport = 1, x_size = X_SIZE,
25 y_size = Y_SIZE)
26
27 if not os.path.isfile("data_meshes/interior_3D.xml"):
28 print "Cannot find file data_meshes/interior_3D.xml"
29 sys.exit(1)
30
31 # Create a DataCollector reading from a XML file.
32 dc1 = DataCollector(source = Source.XML)
33 dc1.setFileName(file_name = "data_meshes/interior_3D.xml")
34
35 # Create a Map.
36 m1 = Map(scene = s, data_collector = dc1, viewport = Viewport.SOUTH_WEST,
37 lut = Lut.COLOR, cell_to_point = False, outline = True)
38 m1.setOpacity(0.3)
39
40 # Create an ImageReader (in place of DataCollector).
41 ir = ImageReader(ImageFormat.JPG)
42 ir.setImageName(image_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, \
43 LOAD_IMAGE_NAME))
44
45 # Create an Image.
46 i = Image(scene = s, image_reader = ir, viewport = Viewport.SOUTH_WEST)
47 i.setOpacity(opacity = 0.9)
48 i.translate(0,0,-1)
49 i.setPoint1(GlobalPosition(2,0,0))
50 i.setPoint2(GlobalPosition(0,2,0))
51
52 # Create a Camera.
53 c1 = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
54
55 # Render the image.
56 print "Creating image file ./offscreen.jpg"
57 s.render(image_name = "offscreen.jpg")
58

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