152 lines
5.2 KiB
Python
Executable File
152 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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identifiers = {
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'grid': ['a','b','c'],
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'size': ['x','y','z'],
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'origin': ['x','y','z'],
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}
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mappings = {
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'grid': lambda x: int(x),
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'size': lambda x: float(x),
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'origin': lambda x: float(x),
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'microstructures': lambda x: int(x),
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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', dest='size', 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.set_defaults(size = [0.0,0.0,0.0])
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(options, filenames) = parser.parse_args()
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#--- setup file handles --------------------------------------------------------------------------
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files = []
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if filenames == []:
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files.append({'name':'STDIN',
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'input':sys.stdin,
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'output':sys.stdout,
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'croak':sys.stderr,
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})
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else:
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for name in filenames:
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if os.path.exists(name):
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files.append({'name':name,
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'input':open(name),
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'output':sys.stdout,
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'croak':sys.stdout,
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})
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#--- loop over input files ------------------------------------------------------------------------
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for file in files:
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file['croak'].write('\033[1m' + scriptName + '\033[0m: ' + (file['name'] if file['name'] != 'STDIN' else '') + '\n')
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table = damask.ASCIItable(file['input'],file['output'])
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table.head_read()
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labels = ['x','y','z']
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grainCol = table.labels_index('microstructure')
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hasGrains = grainCol != -1
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if hasGrains:
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labels += ['microstructure']
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table.data_readArray(labels)
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coords = table.data[:,0:3]
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grain = table.data[:,grainCol] if hasGrains else 1+np.arange(len(coords))
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grainIDs = np.unique(grain).astype('i')
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#--- interpret header ----------------------------------------------------------------------------
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info = {
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'grid': np.zeros(3,'i'),
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'size': np.array(options.size),
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'origin': np.zeros(3,'d'),
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'microstructures': 0,
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}
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for header in table.info:
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headitems = map(str.lower,header.split())
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if len(headitems) == 0: continue
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if headitems[0] in mappings.keys():
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if headitems[0] in identifiers.keys():
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for i in xrange(len(identifiers[headitems[0]])):
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info[headitems[0]][i] = \
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mappings[headitems[0]](headitems[headitems.index(identifiers[headitems[0]][i])+1])
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else:
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info[headitems[0]] = mappings[headitems[0]](headitems[1])
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if info['microstructures'] != len(grainIDs):
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file['croak'].write('grain data not matching grain count (%i)...\n'%(len(grainIDs)))
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info['microstructures'] = len(grainIDs)
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if np.any(info['grid'] < 1):
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file['croak'].write('invalid grid a b c.\n')
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continue
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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'])
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file['croak'].write('rescaling size %s...\n'%{0:'x',1:'y',2:'z'}[i])
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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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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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IDs.InsertNextValue(grainIDs[i])
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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 file['name'] == 'STDIN':
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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:
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writer.SetInput(grid)
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else:
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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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else:
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(head,tail) = os.path.split(file['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(head,'seeds_'+os.path.splitext(tail)[0]
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+'.'+writer.GetDefaultFileExtension()))
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if vtk.VTK_MAJOR_VERSION <= 5:
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writer.SetInput(grid)
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else:
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writer.SetInputData(grid)
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writer.Write()
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