/[escript]/trunk/pyvisi/py_src/datacollector.py
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revision 1189 by jongui, Thu Jun 7 05:31:25 2007 UTC revision 1197 by jongui, Mon Jun 18 02:08:34 2007 UTC
# Line 1  Line 1 
1  """  """
2  @author: John NGUI  @var __author__: name of author
3    @var __copyright__: copyrights
4    @var __license__: licence agreement
5    @var __url__: url entry point on documentation
6    @var __version__: version
7    @var __date__: date of the version
8  """  """
9    
10    __author__="John Ngui, john.ngui@uq.edu.au"
11    __copyright__="""  Copyright (c) 2006 by ACcESS MNRF
12                        http://www.access.edu.au
13                    Primary Business: Queensland, Australia"""
14    __license__="""Licensed under the Open Software License version 3.0
15                 http://www.opensource.org/licenses/osl-3.0.php"""
16    __url__="http://www.iservo.edu.au/esys"
17    __version__="$Revision$"
18    __date__="$Date$"
19    
20    
21  import vtk  import vtk
22  import tempfile, os, sys  import tempfile, os, sys
23  from constant import Source, ColorMode  from constant import Source, ColorMode
# Line 34  class DataCollector: Line 50  class DataCollector:
50          self.__source = source          self.__source = source
51          # Keeps track on whether DataCollector have been modified.          # Keeps track on whether DataCollector have been modified.
52          self.__modified = True          self.__modified = True
53            # Keeps track of the number of times the 'setFileName' or 'setData'
54            # method have been executed.
55            self.__count = 0
56          # Keeps track on whether any specific scalar, vector or tensor          # Keeps track on whether any specific scalar, vector or tensor
57          # field have been specified.          # field have been specified.
58          self.__set_scalar = False          self.__set_scalar = False
# Line 65  class DataCollector: Line 84  class DataCollector:
84          """          """
85    
86          self.__modified = True          self.__modified = True
87            self.__count += 1
88    
89          if(self.__source == Source.XML):          if(self.__source == Source.XML):
90              # Check whether the specified file exists, otherwise exit.              # Check whether the specified file exists, otherwise exit.
# Line 88  class DataCollector: Line 108  class DataCollector:
108          """          """
109    
110          self.__modified = True          self.__modified = True
111            self.__count += 1
112    
113          if self.__source == Source.ESCRIPT:          if self.__source == Source.ESCRIPT:
114              esys.escript.saveVTK(self.__tmp_file,**args)              esys.escript.saveVTK(self.__tmp_file,**args)
# Line 361  class DataCollector: Line 382  class DataCollector:
382          """          """
383    
384          if(self.__modified == True):          if(self.__modified == True):
385              #self.__modified = False              # 'self.__modified' is set to False only if the 'setFileName' or
386                # 'setData' method have been called once. This is to prevent
387                # the scalar range and active field (i.e. scalar, vector or tensor)
388                # from being updated as no changes has taken place (for performance
389                # reasons). However if the 'setFileName' or 'setData' method is
390                # called more than once, then 'self.__modified' remains True.
391                if(self.__count == 1):
392                    self.__modified = False
393              return True              return True
394          else:          else:
395              return False              return False

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