126 lines
4.6 KiB
Python
Executable File
126 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: UTF-8 no BOM -*-
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import os,sys,vtk
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import numpy as np
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from optparse import OptionParser
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import damask
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scriptID = '$Id$'
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scriptName = os.path.splitext(scriptID.split()[1])[0]
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# --------------------------------------------------------------------
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# MAIN
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# --------------------------------------------------------------------
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parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
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Create regular voxel grid from points in an ASCIItable.
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""", version = scriptID)
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parser.add_option('-m', '--mode',
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dest = 'mode',
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type = 'choice', choices = ['cell','point'],
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help = 'cell-centered or point-centered coordinates ')
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parser.add_option('-p', '--positions',
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dest = 'position',
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type = 'string', metavar = 'string',
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help = 'coordinate label [%default]')
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parser.set_defaults(position = 'pos',
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)
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(options, filenames) = parser.parse_args()
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if not options.mode: parser.error("No coordinate type specified.")
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# --- loop over input files -------------------------------------------------------------------------
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if filenames == []: filenames = [None]
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for name in filenames:
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try:
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table = damask.ASCIItable(name = name,
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buffered = False, readonly = True)
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except: continue
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damask.util.croak(damask.util.emph(scriptName)+(': '+name if name else ''))
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# --- interpret header ----------------------------------------------------------------------------
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table.head_read()
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# ------------------------------------------ sanity checks ----------------------------------------
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errors = []
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remarks = []
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if table.label_dimension(options.position) != 3: errors.append('coordinates {} are not a vector.'.format(options.position))
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if remarks != []: damask.util.croak(remarks)
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if errors != []:
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damask.util.croak(errors)
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table.close(dismiss = True)
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continue
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# --------------- figure out size and grid ---------------------------------------------------------
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table.data_readArray(options.position)
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coords = [np.unique(table.data[:,i]) for i in xrange(3)]
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if options.mode == 'cell':
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coords = [0.5 * np.array([3.0 * coords[i][0] - coords[i][0 + len(coords[i]) > 1]] + \
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[coords[i][j-1] + coords[i][j] for j in xrange(1,len(coords[i]))] + \
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[3.0 * coords[i][-1] - coords[i][-1 - (len(coords[i]) > 1)]]) for i in xrange(3)]
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grid = np.array(map(len,coords),'i')
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N = grid.prod() if options.mode == 'point' else (grid-1).prod()
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if N != len(table.data): errors.append('data count {} does not match grid {}x{}x{}.'.format(N,*(grid - options.mode == 'cell') ))
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if errors != []:
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damask.util.croak(errors)
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table.close(dismiss = True)
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continue
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# ------------------------------------------ process data ---------------------------------------
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rGrid = vtk.vtkRectilinearGrid()
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coordArray = [vtk.vtkDoubleArray(),
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vtk.vtkDoubleArray(),
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vtk.vtkDoubleArray(),
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]
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rGrid.SetDimensions(*grid)
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for i,points in enumerate(coords):
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for point in points:
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coordArray[i].InsertNextValue(point)
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rGrid.SetXCoordinates(coordArray[0])
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rGrid.SetYCoordinates(coordArray[1])
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rGrid.SetZCoordinates(coordArray[2])
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damask.util.croak('{} points and {} cells...'.format(rGrid.GetNumberOfPoints(),rGrid.GetNumberOfCells(),))
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# ------------------------------------------ output result ---------------------------------------
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if name:
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(dir,filename) = os.path.split(name)
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writer = vtk.vtkXMLRectilinearGridWriter()
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writer.SetDataModeToBinary()
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writer.SetCompressorTypeToZLib()
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writer.SetFileName(os.path.join(dir,os.path.splitext(filename)[0]+'_{}'.format(options.position) \
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+'.'+writer.GetDefaultFileExtension()))
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if vtk.VTK_MAJOR_VERSION <= 5: writer.SetInput(rGrid)
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else: writer.SetInputData(rGrid)
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writer.Write()
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else:
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writer = vtk.vtkRectilinearGridWriter()
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writer.WriteToOutputStringOn()
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writer.SetFileTypeToASCII()
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writer.SetHeader('# powered by '+scriptID)
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if vtk.VTK_MAJOR_VERSION <= 5: writer.SetInput(rGrid)
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else: writer.SetInputData(rGrid)
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writer.Write()
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sys.stdout.write(writer.GetOutputString()[0:writer.GetOutputStringLength()])
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table.close() # close input ASCII table
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