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

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Thu Sep 25 23:11:13 2008 UTC (10 years, 3 months ago) by ksteube
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1
2 ########################################################
3 #
4 # Copyright (c) 2003-2008 by University of Queensland
5 # Earth Systems Science Computational Center (ESSCC)
6 # http://www.uq.edu.au/esscc
7 #
8 # Primary Business: Queensland, Australia
9 # Licensed under the Open Software License version 3.0
10 # http://www.opensource.org/licenses/osl-3.0.php
11 #
12 ########################################################
13
14 __copyright__="""Copyright (c) 2003-2008 by University of Queensland
15 Earth Systems Science Computational Center (ESSCC)
16 http://www.uq.edu.au/esscc
17 Primary Business: Queensland, Australia"""
18 __license__="""Licensed under the Open Software License version 3.0
19 http://www.opensource.org/licenses/osl-3.0.php"""
20 __url__="http://www.uq.edu.au/esscc/escript-finley"
21
22 """
23 Author: Ken Steube
24 """
25
26 # Example of creating an image in a file (without the need for an X connection)
27
28 # Import the necessary modules.
29 from esys.pyvisi import Scene, DataCollector, Map, ImageReader, Image, Camera
30 from esys.pyvisi import GlobalPosition
31 from esys.pyvisi.constant import *
32 import os, sys
33
34 PYVISI_EXAMPLE_MESHES_PATH = "data_meshes"
35 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
36 X_SIZE = 400
37 Y_SIZE = 400
38
39 SCALAR_FIELD_POINT_DATA = "temperature"
40 FILE_3D = "interior_3D.xml"
41 LOAD_IMAGE_NAME = "flinders.jpg"
42 JPG_RENDERER = Renderer.OFFLINE_JPG
43
44 # Create a Scene.
45 s = Scene(renderer = JPG_RENDERER, num_viewport = 1, x_size = X_SIZE,
46 y_size = Y_SIZE)
47
48 if not os.path.isfile("data_meshes/interior_3D.xml"):
49 print "Cannot find file data_meshes/interior_3D.xml"
50 sys.exit(1)
51
52 # Create a DataCollector reading from a XML file.
53 dc1 = DataCollector(source = Source.XML)
54 dc1.setFileName(file_name = "data_meshes/interior_3D.xml")
55
56 # Create a Map.
57 m1 = Map(scene = s, data_collector = dc1, viewport = Viewport.SOUTH_WEST,
58 lut = Lut.COLOR, cell_to_point = False, outline = True)
59 m1.setOpacity(0.3)
60
61 # Create an ImageReader (in place of DataCollector).
62 ir = ImageReader(ImageFormat.JPG)
63 ir.setImageName(image_name = os.path.join(PYVISI_EXAMPLE_MESHES_PATH, \
64 LOAD_IMAGE_NAME))
65
66 # Create an Image.
67 i = Image(scene = s, image_reader = ir, viewport = Viewport.SOUTH_WEST)
68 i.setOpacity(opacity = 0.9)
69 i.translate(0,0,-1)
70 i.setPoint1(GlobalPosition(2,0,0))
71 i.setPoint2(GlobalPosition(0,2,0))
72
73 # Create a Camera.
74 c1 = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
75
76 # Render the image.
77 print "Creating image file ./offscreen.jpg"
78 s.render(image_name = "offscreen.jpg")
79

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