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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkmeshvorticityhelicity.py,v $
## Language: Python
## Date: $Date: 2005/09/14 09:49:59 $
## Version: $Revision: 1.6 $
## 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 vtkvmtk
import vtk
import sys
import pypes
vmtkmeshvorticityhelicity = 'vmtkMeshVorticityHelicity'
class vmtkMeshVorticityHelicity(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.VelocityArrayName = None
self.VorticityArrayName = 'Vorticity'
self.HelicityArrayName = 'Helicity'
self.ComputeHelicity = True
self.ConvergenceTolerance = 1E-6
self.QuadratureOrder = 3
self.SetScriptName('vmtkmeshvorticityhelicity')
self.SetScriptDoc('compute vorticity and helicity from a velocity field')
self.SetInputMembers([
['Mesh','i','vtkUnstructuredGrid',1,'','the input mesh','vmtkmeshreader'],
['ComputeHelicity','helicity','bool',1,'',''],
['VelocityArrayName','velocityarray','str',1,'',''],
['VorticityArrayName','vorticityarray','str',1,'',''],
['HelicityArrayName','helicityarray','str',1,'',''],
['ConvergenceTolerance','tolerance','float',1,'',''],
['QuadratureOrder','quadratureorder','int',1,'','']
])
self.SetOutputMembers([
['Mesh','o','vtkUnstructuredGrid',1,'','the output mesh','vmtkmeshwriter']
])
def Execute(self):
if (self.Mesh == None):
self.PrintError('Error: no Mesh.')
vorticityFilter = vtkvmtk.vtkvmtkUnstructuredGridVorticityFilter()
vorticityFilter.SetInputData(self.Mesh)
vorticityFilter.SetVelocityArrayName(self.VelocityArrayName)
vorticityFilter.SetVorticityArrayName(self.VorticityArrayName)
vorticityFilter.SetHelicityFactorArrayName(self.HelicityArrayName)
vorticityFilter.SetConvergenceTolerance(self.ConvergenceTolerance)
vorticityFilter.SetQuadratureOrder(self.QuadratureOrder)
if self.ComputeHelicity:
vorticityFilter.ComputeHelicityFactorOn()
else:
vorticityFilter.ComputeHelicityFactorOff()
vorticityFilter.Update()
self.Mesh = vorticityFilter.GetOutput()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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