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

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Revision 1568 - (show annotations)
Sat May 24 03:15:08 2008 UTC (10 years, 11 months ago) by ksteube
File MIME type: text/x-python
File size: 1599 byte(s)
Some testing on ac.apac.edu.au, more work needed
New pyvisi example offscreen.py for 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
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 # Create a DataCollector reading from a XML file.
28 dc1 = DataCollector(source = Source.XML)
29 dc1.setFileName(file_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, FILE_3D))
30
31 # Create a Map.
32 m1 = Map(scene = s, data_collector = dc1, viewport = Viewport.SOUTH_WEST,
33 lut = Lut.COLOR, cell_to_point = False, outline = True)
34 m1.setOpacity(0.3)
35
36 # Create an ImageReader (in place of DataCollector).
37 ir = ImageReader(ImageFormat.JPG)
38 ir.setImageName(image_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, \
39 LOAD_IMAGE_NAME))
40
41 # Create an Image.
42 i = Image(scene = s, image_reader = ir, viewport = Viewport.SOUTH_WEST)
43 i.setOpacity(opacity = 0.9)
44 i.translate(0,0,-1)
45 i.setPoint1(GlobalPosition(2,0,0))
46 i.setPoint2(GlobalPosition(0,2,0))
47
48 # Create a Camera.
49 c1 = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
50
51 # Render the image.
52 print "Creating image file ./offscreen.jpg"
53 s.render(image_name = "offscreen.jpg")
54

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