Mercurial > repos > iuc > icqsol_add_surface_field_from_expression

comparison icqsol_utils.py @ 0:e12b55e960de draft default tip

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author iuc
date Tue, 23 Aug 2016 14:54:04 -0400
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-1:000000000000 0:e12b55e960de
1 import os
2 import sys
3 import tempfile
4
5 from icqsol.shapes.icqShapeManager import ShapeManager
6 from icqsol.bem.icqLaplaceSolver import LaplaceSolver
7
8 PLY = 'ply'
9 POLYDATA = 'POLYDATA'
10 VTK = 'vtk'
11
12
13 def asbool(val):
14 return str(val).lower() in ['yes', 'true']
15
16
17 def get_format_and_type(galaxy_ext):
18 # Define the output file format and type.
19 format = None
20 datatype = None
21 if galaxy_ext in ['vtkascii', 'vtkbinary']:
22 format = VTK
23 elif galaxy_ext in ['plyascii', 'plybinary']:
24 format = PLY
25 if galaxy_ext in ['vtkascii', 'plyascii']:
26 datatype = 'ascii'
27 elif galaxy_ext in ['vtkbinary', 'plybinary']:
28 datatype = 'binary'
29 return format, datatype
30
31
32 def get_input_file_path(tmp_dir, input_file, format):
33 """
34 iCqSol uses file extensions (e.g., .ply, .vtk) when reading and
35 writing files, so the Galaxy dataset naming convention of
36 setting all file extensions as .dat must be handled.
37 """
38 file_path = get_temporary_file_path(tmp_dir, format)
39 # Remove the file so we can create a symlink.
40 os.remove(file_path)
41 os.symlink(input_file, file_path)
42 return file_path
43
44
45 def get_laplace_solver(shape_data, max_edge_length=float('inf')):
46 return LaplaceSolver(shape_data, max_edge_length=max_edge_length)
47
48
49 def get_shape_manager(format=None, dataset_type=None):
50 # Instantiate a ShapeManager.
51 return ShapeManager(file_format=format, vtk_dataset_type=dataset_type)
52
53
54 def get_temp_dir(prefix='tmp-vtk-', dir=None):
55 """
56 Return a temporary directory.
57 """
58 return tempfile.mkdtemp(prefix=prefix, dir=dir)
59
60
61 def get_tempfilename(dir=None, suffix=None):
62 """
63 Return a temporary file name.
64 """
65 if suffix is None:
66 s = None
67 elif suffix.startswith('.'):
68 s = suffix
69 else:
70 s = '.%s' % suffix
71 fd, name = tempfile.mkstemp(suffix=s, dir=dir)
72 os.close(fd)
73 return name
74
75
76 def get_temporary_file_path(tmp_dir, file_extension):
77 """
78 Return the path to a temporary file with a valid VTK format
79 file extension.
80 """
81 return get_tempfilename(tmp_dir, file_extension)
82
83
84 def stop_err(msg):
85 sys.stderr.write("%s\n" % msg)
86 sys.exit()