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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkmeshvolume.py,v $
## Language: Python
## Date: $Date: 2005/09/14 09:49:59 $
## Version: $Revision: 1.8 $
## 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 vtk
import sys
import pypes
vmtkmeshvolume = 'vmtkMeshVolume'
class vmtkMeshVolume(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.Volume = 0.0
self.SetScriptName('vmtkmeshvolume')
self.SetScriptDoc('computes the volume of a mesh')
self.SetInputMembers([
['Mesh','i','vtkPolyData',1,'','the input mesh','vmtkmeshreader']
])
self.SetOutputMembers([
['Volume','volume','float',1,'']
])
def Execute(self):
if self.Mesh == None:
self.PrintError('Error: No input mesh.')
tetrahedralizeFilter = vtk.vtkDataSetTriangleFilter()
tetrahedralizeFilter.SetInputData(self.Mesh)
tetrahedralizeFilter.TetrahedraOnlyOn()
tetrahedralizeFilter.Update()
self.Mesh = tetrahedralizeFilter.GetOutput()
self.Volume = 0.0
cellPoints = vtk.vtkIdList()
for i in xrange(self.Mesh.GetNumberOfCells()):
self.Mesh.GetCellPoints(i,cellPoints)
point0 = self.Mesh.GetPoint(cellPoints.GetId(0))
point1 = self.Mesh.GetPoint(cellPoints.GetId(1))
point2 = self.Mesh.GetPoint(cellPoints.GetId(2))
point3 = self.Mesh.GetPoint(cellPoints.GetId(3))
self.Volume += abs(vtk.vtkTetra.ComputeVolume(point0,point1,point2,point3))
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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