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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkmeshmergetimesteps.py,v $
## Language: Python
## Date: $Date: 2013/07/15 12:59:27 $
## 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.
## Note: this class was contributed by
## Simone Manini
## Orobix Srl
import vtk
import sys
import os
import vtkvmtk
import vmtkmeshreader
import vmtkmeshvectorfromcomponents
import pypes
vmtkmeshmergetimesteps = 'vmtkMeshMergeTimesteps'
class vmtkMeshMergeTimesteps(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.InputDirectoryName = None
self.Pattern = None
self.FirstTimeStep = None
self.LastTimeStep = None
self.IntervalTimeStep = 1
self.VelocityVector = 0
self.VelocityVectorArrayName = None
self.Pressure = 0
self.PressureArrayName = 'p'
self.Wsr = 0
self.VelocityComponentsArrayNames = 'u v w'
self.WsrComponentsArrayNames = 'taux tauy tauz'
self.WsrVector = 0
self.SetScriptName('vmtkmeshmergetimesteps')
self.SetScriptDoc('merge multiple mesh files with different timesteps into one')
self.SetInputMembers([
['InputDirectoryName','directory','str',1,''],
['Pattern','pattern','str',1,''],
['FirstTimeStep','firststep','int',1,'(0,)'],
['LastTimeStep','laststep','int',1,'(0,)'],
['IntervalTimeStep','intervalstep','int',1,'(0,)'],
['VelocityComponentsArrayNames','components','str',-1,'',''],
['VelocityVector','velocityvector','bool',1,'','velocity vector instead of components'],
['VelocityVectorArrayName','vector','str',1,'','velocity vector name'],
['Pressure','pressure','bool',1,'','pressure array'],
['PressureArrayName','pressurearrayname','str',1,'','name of the pressure array'],
['Wsr','wallshearrate','bool',1,'','wallshearrate array'],
['WsrComponentsArrayNames','components','str',-1,'',''],
['WsrVector','wsrvector','bool',1,'','wallshearrate vector instead of components'],
])
self.SetOutputMembers([
['Mesh','o','vtkUnstructuredGrid',1,'','the output mesh','vmtkmeshwriter']
])
def Execute(self):
if (self.InputDirectoryName == None):
self.PrintError('Error: no directory.')
if (self.Pattern == None):
self.PrintError('Error: no pattern.')
if (self.FirstTimeStep == None):
self.PrintError('Error: no first timestep.')
if (self.LastTimeStep == None):
self.PrintError('Error: no last timestep.')
if (self.VelocityComponentsArrayNames == None):
self.PrintError('Error: no VelocityComponentsArrayNames.')
for root, dirs, files in os.walk(self.InputDirectoryName):
if root == self.InputDirectoryName:
fileList = [x for x in files if not (x.startswith('.'))]
timeIndexList = range(self.FirstTimeStep,self.LastTimeStep+1,self.IntervalTimeStep)
reader = vmtkmeshreader.vmtkMeshReader()
#if self.VelocityVector or self.WsrVector:
if self.WsrVector:
vectorFromComponents = vmtkmeshvectorfromcomponents.vmtkMeshVectorFromComponents()
u_name = self.VelocityComponentsArrayNames.split(' ')[0]
v_name = self.VelocityComponentsArrayNames.split(' ')[1]
w_name = self.VelocityComponentsArrayNames.split(' ')[2]
if self.Wsr:
taux_name = self.WsrComponentsArrayNames.split(' ')[0]
tauy_name = self.WsrComponentsArrayNames.split(' ')[1]
tauz_name = self.WsrComponentsArrayNames.split(' ')[2]
field = vtk.vtkFieldData()
field.AllocateArrays(1)
timesteps = vtk.vtkIntArray()
timesteps.SetNumberOfComponents(1)
timesteps.SetName("timesteps")
i = 0
for step in timeIndexList:
if (self.Pattern%step).replace(' ','0') in fileList:
timesteps.InsertTuple1(i, step)
i+=1
fileName = (self.Pattern%step).replace(' ','0')
timeIndex = step
reader.InputFileName = os.path.abspath(os.path.join(self.InputDirectoryName,fileName))
reader.Execute()
mesh = reader.Mesh
if step == self.FirstTimeStep:
mesh.CopyStructure(mesh)
self.Mesh = mesh
if self.Pressure:
p = mesh.GetPointData().GetArray(self.PressureArrayName)
p.SetName(self.PressureArrayName+str(step))
self.Mesh.GetPointData().AddArray(p)
if self.Wsr:
taux = mesh.GetPointData().GetArray(taux_name)
taux.SetName(taux_name+str(step))
self.Mesh.GetPointData().AddArray(taux)
tauy = mesh.GetPointData().GetArray(tauy_name)
tauy.SetName(tauy_name+str(step))
self.Mesh.GetPointData().AddArray(tauy)
tauz = mesh.GetPointData().GetArray(tauz_name)
tauz.SetName(tauz_name+str(step))
self.Mesh.GetPointData().AddArray(tauz)
if self.VelocityVector:
j = 0
u_component = vtk.vtkDoubleArray()
u_component.SetNumberOfComponents(1)
v_component = vtk.vtkDoubleArray()
v_component.SetNumberOfComponents(1)
w_component = vtk.vtkDoubleArray()
w_component.SetNumberOfComponents(1)
while j < mesh.GetPointData().GetArray(self.VelocityVectorArrayName).GetNumberOfTuples():
u_val = mesh.GetPointData().GetArray(self.VelocityVectorArrayName).GetComponent(j,0)
v_val = mesh.GetPointData().GetArray(self.VelocityVectorArrayName).GetComponent(j,1)
w_val = mesh.GetPointData().GetArray(self.VelocityVectorArrayName).GetComponent(j,2)
u_component.InsertTuple1(j, u_val)
v_component.InsertTuple1(j, v_val)
w_component.InsertTuple1(j, w_val)
j+=1
u_component.SetName(u_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(u_component)
v_component.SetName(v_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(v_component)
w_component.SetName(w_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(w_component)
else:
u = mesh.GetPointData().GetArray(u_name)
u.SetName(u_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(u)
v = mesh.GetPointData().GetArray(v_name)
v.SetName(v_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(v)
w = mesh.GetPointData().GetArray(w_name)
w.SetName(w_name+"_"+str(step))
self.Mesh.GetPointData().AddArray(w)
if self.WsrVector:
vectorFromComponents.Mesh = self.Mesh
vectorFromComponents.VectorArrayName = "Wsr_"+str(step)
vectorFromComponents.ComponentsArrayNames = [taux.GetName(),tauy.GetName(),tauz.GetName()]
vectorFromComponents.RemoveComponentArrays = True
vectorFromComponents.Execute()
field.AddArray(timesteps)
self.Mesh.SetFieldData(field)
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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