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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtktetgen.py,v $
## Language: Python
## Date: $Date: 2005/09/14 09:49:59 $
## Version: $Revision: 1.7 $
## Copyright (c) Luca Antiga, David Steinman. All rights reserved.
## See LICENCE file for details.
## This software is distributed WITHOUT ANY WARRANTY; without even
## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
## PURPOSE. See the above copyright notices for more information.
import sys
import vtk
import vtkvmtk
import pypes
vmtktetgen = 'vmtkTetGen'
class vmtkTetGen(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.GenerateCaps = 0
self.PLC = 1
self.Refine = 0
self.Coarsen = 0
self.NoBoundarySplit = 0
self.Quality = 1
self.MinRatio = 1.414
self.MinDihedral = 10.0
self.MaxDihedral = 165.0
self.VarVolume = 0
self.FixedVolume = 0
self.MaxVolume = 1E-1
self.RemoveSliver = 0
self.RegionAttrib = 0
self.Epsilon = 1E-8
self.NoMerge = 0
self.DetectInter = 0
self.CheckClosure = 0
self.Order = 1
self.DoCheck = 0
self.Verbose = 0
self.UseSizingFunction = 0
self.SizingFunctionArrayName = ''
self.CellEntityIdsArrayName = 'CellEntityIds'
self.TetrahedronVolumeArrayName = 'TetrahedronVolume'
self.OutputSurfaceElements = 1
self.OutputVolumeElements = 1
self.SetScriptName('vmtktetgen')
self.SetScriptDoc('wrapper around TetGen tetrahedral mesh generator by Hang Si (http://tetgen.berlios.de/)')
self.SetInputMembers([
['Mesh','i','vtkUnstructuredGrid',1,'','the input mesh','vmtkmeshreader'],
['GenerateCaps','caps','bool',1,'','close surface holes with caps before meshing'],
['PLC','plc','int',1,'','see TetGen documentation'],
['Refine','refine','int',1,'','see TetGen documentation'],
['Coarsen','coarsen','int',1,'','see TetGen documentation'],
['NoBoundarySplit','noboundarysplit','int',1,'','see TetGen documentation'],
['Quality','quality','int',1,'','see TetGen documentation'],
['MinRatio','minratio','float',1,'','see TetGen documentation'],
['MinDihedral','mindihedral','float',1,'','see TetGen documentation'],
['MaxDihedral','maxdihedral','float',1,'','see TetGen documentation'],
['VarVolume','varvolume','int',1,'','see TetGen documentation'],
['FixedVolume','fixedvolume','int',1,'','see TetGen documentation'],
['MaxVolume','maxvolume','float',1,'','see TetGen documentation'],
['RemoveSliver','removesliver','int',1,'','see TetGen documentation'],
['RegionAttrib','regionattrib','int',1,'','see TetGen documentation'],
['Epsilon','epsilon','float',1,'','see TetGen documentation'],
['NoMerge','nomerge','int',1,'','see TetGen documentation'],
['DetectInter','detectinter','int',1,'','see TetGen documentation'],
['CheckClosure','checkclosure','int',1,'','see TetGen documentation'],
['Order','order','int',1,'','see TetGen documentation'],
['DoCheck','docheck','int',1,'','see TetGen documentation'],
['Verbose','verbose','int',1,'','see TetGen documentation'],
['UseSizingFunction','usesizingfunction','int',1,'','see TetGen documentation'],
['CellEntityIdsArrayName','entityidsarray','str',1,'','name of the array where cell entity ids are stored'],
['TetrahedronVolumeArrayName','tetravolumearray','str',1,'','name of the array where volumes of tetrahedra are stored'],
['SizingFunctionArrayName','sizingfunctionarray','str',1,'','name of the array where sizing function values are stored'],
['OutputSurfaceElements','surfaceelements','int',1,'','toggle output surface elements'],
['OutputVolumeElements','volumeelements','int',1,'','toggle output volume elements']
])
self.SetOutputMembers([
['Mesh','o','vtkUnstructuredGrid',1,'','the output mesh','vmtkmeshwriter'],
['CellEntityIdsArrayName','entityidsarray','str',1,'','name of the array where cell entity ids are stored'],
['TetrahedronVolumeArrayName','tetravolumearray','str',1,'','name of the array where volumes of tetrahedra are stored']
])
def Execute(self):
if self.Mesh == None:
self.PrintError('Error: No input mesh.')
if self.GenerateCaps == 1:
if not ((self.Mesh.IsHomogeneous() == 1) & (self.Mesh.GetCellType(0) == 5)):
self.PrintError('Error: In order to generate caps, all input mesh elements must be triangles.')
meshToSurfaceFilter = vtk.vtkGeometryFilter()
meshToSurfaceFilter.SetInput(self.Mesh)
meshToSurfaceFilter.Update()
cap = vtkvmtk.vtkvmtkSimpleCapPolyData()
cap.SetInput(meshToSurfaceFilter.GetOutput())
cap.SetCellMarkerArrayName(self.FacetMarkerArrayName)
cap.Update()
surfacetomesh = vtkvmtk.vtkvmtkPolyDataToUnstructuredGridFilter()
surfacetomesh.SetInput(cap.GetOutput())
surfacetomesh.Update()
self.Mesh = surfacetomesh.GetOutput()
tetgen = vtkvmtk.vtkvmtkTetGenWrapper()
tetgen.SetInput(self.Mesh)
tetgen.SetPLC(self.PLC)
tetgen.SetRefine(self.Refine)
tetgen.SetCoarsen(self.Coarsen)
tetgen.SetNoBoundarySplit(self.NoBoundarySplit)
tetgen.SetQuality(self.Quality)
tetgen.SetMinRatio(self.MinRatio)
tetgen.SetMinDihedral(self.MinDihedral)
tetgen.SetMaxDihedral(self.MaxDihedral)
tetgen.SetVarVolume(self.VarVolume)
tetgen.SetFixedVolume(self.FixedVolume)
tetgen.SetMaxVolume(self.MaxVolume)
tetgen.SetRemoveSliver(self.RemoveSliver)
tetgen.SetRegionAttrib(self.RegionAttrib)
tetgen.SetEpsilon(self.Epsilon)
tetgen.SetNoMerge(self.NoMerge)
tetgen.SetDetectInter(self.DetectInter)
tetgen.SetCheckClosure(self.CheckClosure)
tetgen.SetOrder(self.Order)
tetgen.SetDoCheck(self.DoCheck)
tetgen.SetVerbose(self.Verbose)
tetgen.SetUseSizingFunction(self.UseSizingFunction)
tetgen.SetCellEntityIdsArrayName(self.CellEntityIdsArrayName)
tetgen.SetTetrahedronVolumeArrayName(self.TetrahedronVolumeArrayName)
tetgen.SetSizingFunctionArrayName(self.SizingFunctionArrayName)
tetgen.SetOutputSurfaceElements(self.OutputSurfaceElements)
tetgen.SetOutputVolumeElements(self.OutputVolumeElements)
tetgen.Update()
self.Mesh = tetgen.GetOutput()
if self.Mesh.GetSource():
self.Mesh.GetSource().UnRegisterAllOutputs()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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