143 lines
5.1 KiB
Python
Executable File
143 lines
5.1 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,re,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 hexahedral voxels around points in an ASCIItable.
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""", version = scriptID)
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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.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 voxel')
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parser.add_option('-o', '--origin',
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dest = 'origin',
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type = 'float', nargs = 3, metavar = 'float float float',
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help = 'x,y,z origin of coordinate system')
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parser.add_option('-g', '--geom',
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dest = 'geom', action='store_true',
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help = 'derive geometry from geom-file header information [%default]')
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parser.set_defaults(position = 'pos',
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origin = (0.0,0.0,0.0),
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geom = False,
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)
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(options, filenames) = parser.parse_args()
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if options.size == None and not options.geom:
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parser.error('no size 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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table.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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if options.geom:
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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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else:
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info = {}
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info['size'] = np.ones(3)
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info['grid'] = info['size'] / options.size
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info['origin'] = options.origin
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errors = []
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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 np.any(info['grid'] < 1): errors.append('invalid grid a b c.')
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if np.any(info['size'] <= 0.0): errors.append('invalid size x y z.')
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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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# ------------------------------------------ process data ---------------------------------------
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table.data_readArray(options.position)
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table.data[:,0:3] *= info['size']
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table.data[:,0:3] += info['origin']
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hexPoints = np.array([[-1,-1,-1],
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[ 1,-1,-1],
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[ 1, 1,-1],
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[-1, 1,-1],
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[-1,-1, 1],
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[ 1,-1, 1],
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[ 1, 1, 1],
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[-1, 1, 1],
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])
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halfDelta = 0.5*info['size']/info['grid']
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Points = vtk.vtkPoints()
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Hex = vtk.vtkHexahedron()
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uGrid = vtk.vtkUnstructuredGrid()
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for p in table.data:
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for i,h in enumerate(hexPoints):
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id = Points.InsertNextPoint(p+h*halfDelta)
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Hex.GetPointIds().SetId(i,id)
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uGrid.InsertNextCell(Hex.GetCellType(), Hex.GetPointIds())
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uGrid.SetPoints(Points)
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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.vtkXMLUnstructuredGridWriter()
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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(uGrid)
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else: writer.SetInputData(uGrid)
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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(uGrid)
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else: writer.SetInputData(uGrid)
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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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