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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtksurfacenormals.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 vtk
import vtkvmtk
import sys
import pypes
vmtksurfacenormals = 'vmtkSurfaceNormals'
class vmtkSurfaceNormals(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Surface = None
self.NormalsArrayName = 'Normals'
self.ComputeCellNormals = 0
self.AutoOrientNormals = 1
self.FlipNormals = 0
self.Consistency = 1
self.SetScriptName('vmtksurfacenormals')
self.SetScriptDoc('compute normals to a surface')
self.SetInputMembers([
['Surface','i','vtkPolyData',1,'','the input surface','vmtksurfacereader'],
['NormalsArrayName','normalsarray','str',1,'','name of the array where normals have to be stored'],
['AutoOrientNormals','autoorientnormals','bool',1,'','try to auto orient normals outwards'],
['Consistency','consistency','bool',1,'','try to orient normals so that neighboring points have similar orientations'],
['ComputeCellNormals','cellnormals','bool',1,'','compute cell normals instead of point normals'],
['FlipNormals','flipnormals','bool',1,'','flip normals after computing them']
])
self.SetOutputMembers([
['Surface','o','vtkPolyData',1,'','the output surface','vmtksurfacewriter']
])
def Execute(self):
if self.Surface == None:
self.PrintError('Error: No Surface.')
normalsFilter = vtk.vtkPolyDataNormals()
normalsFilter.SetInputData(self.Surface)
normalsFilter.SetAutoOrientNormals(self.AutoOrientNormals)
normalsFilter.SetFlipNormals(self.FlipNormals)
normalsFilter.SetConsistency(self.Consistency)
normalsFilter.SetComputeCellNormals(self.ComputeCellNormals)
normalsFilter.SplittingOff()
normalsFilter.Update()
self.Surface = normalsFilter.GetOutput()
if self.NormalsArrayName != '':
self.Surface.GetPointData().GetNormals().SetName(self.NormalsArrayName)
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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