130 lines
5.2 KiB
Python
Executable File
130 lines
5.2 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: UTF-8 no BOM -*-
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import os,sys,string,vtk
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import numpy as np
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import damask
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from optparse import OptionParser
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scriptID = string.replace('$Id$','\n','\\n')
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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 [seedsfile[s]]', description = """
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Produce VTK point mesh from seeds file
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""", version = scriptID)
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parser.add_option('-s', '--size',
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dest = 'size',
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type = 'float', nargs = 3, metavar = 'float float float',
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help = 'x,y,z size of hexahedral box [1.0 along largest grid point number]')
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parser.add_option('-p','--position',
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dest = 'position',
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type = 'string', metavar = 'string',
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help = 'column label for coordinates [%default]')
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parser.set_defaults(size = [0.0,0.0,0.0],
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position = 'pos',
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)
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(options, filenames) = parser.parse_args()
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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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table.croak('\033[1m'+scriptName+'\033[0m'+(': '+name if name else ''))
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# --- interpret header ----------------------------------------------------------------------------
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table.head_read()
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info,extra_header = table.head_getGeom()
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table.croak(['grid a b c: %s'%(' x '.join(map(str,info['grid']))),
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'size x y z: %s'%(' x '.join(map(str,info['size']))),
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'origin x y z: %s'%(' : '.join(map(str,info['origin']))),
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'homogenization: %i'%info['homogenization'],
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'microstructures: %i'%info['microstructures'],
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])
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remarks = []
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errors = []
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if np.any(info['grid'] < 1): remarks.append('invalid grid a b c.')
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if np.any(info['size'] <= 0.0) \
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and np.all(info['grid'] < 1): errors.append('invalid size x y z.')
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else:
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for i in xrange(3):
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if info['size'][i] <= 0.0: # any invalid size?
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info['size'][i] = float(info['grid'][i])/max(info['grid']) # normalize to grid
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remarks.append('rescaling size {} to {}...'.format({0:'x',1:'y',2:'z'}[i],info['size'][i]))
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if table.label_dimension(options.position) != 3: errors.append('columns "{}" have dimension {}'.format(options.position,
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table.label_dimension(options.position)))
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if remarks != []: table.croak(remarks)
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if errors != []:
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table.croak(errors)
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table.close(dismiss=True)
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continue
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labels = ['{dim}_{label}'.format(dim = 1+i,label = options.position) for i in xrange(3)]
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hasGrains = table.label_index('microstructure') != -1
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labels += ['microstructure'] if hasGrains else []
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table.data_readArray(labels) # read ASCIItable columns
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coords = table.data[:,:3]*info['size'] # assign coordinates (rescaled to box size)
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grain = table.data[:,3].astype('i') if hasGrains else 1+np.arange(len(coords),dtype='i') # assign grains
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# --- generate grid --------------------------------------------------------------------------------
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grid = vtk.vtkUnstructuredGrid()
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pts = vtk.vtkPoints()
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# --- process microstructure information -----------------------------------------------------------
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IDs = vtk.vtkIntArray()
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IDs.SetNumberOfComponents(1)
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IDs.SetName("GrainID")
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for i,item in enumerate(coords):
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IDs.InsertNextValue(grain[i])
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pid = pts.InsertNextPoint(item[0:3])
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pointIds = vtk.vtkIdList()
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pointIds.InsertId(0, pid)
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grid.InsertNextCell(1, pointIds)
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grid.SetPoints(pts)
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grid.GetCellData().AddArray(IDs)
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# --- write data -----------------------------------------------------------------------------------
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if name:
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(dir,filename) = os.path.split(name)
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writer = vtk.vtkXMLUnstructuredGridWriter()
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writer.SetDataModeToBinary()
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writer.SetCompressorTypeToZLib()
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writer.SetFileName(os.path.join(dir,'seeds_'+os.path.splitext(filename)[0]
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+'.'+writer.GetDefaultFileExtension()))
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if vtk.VTK_MAJOR_VERSION <= 5: writer.SetInput(grid)
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else: writer.SetInputData(grid)
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writer.Write()
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else:
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writer = vtk.vtkUnstructuredGridWriter()
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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(grid)
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else: writer.SetInputData(grid)
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writer.Write()
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sys.stdout.write(writer.GetOutputString()[0:writer.GetOutputStringLength()])
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table.close()
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