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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtksurfacedistance.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 vtk
import vtkvmtk
import sys
import pypes
vmtksurfacedistance = 'vmtkSurfaceDistance'
class vmtkSurfaceDistance(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.ReferenceSurface = None
self.Surface = None
self.DistanceArrayName = ''
self.DistanceVectorsArrayName = ''
self.SignedDistanceArrayName = ''
self.FlipNormals = 0
self.SetScriptName('vmtksurfacedistance')
self.SetScriptDoc('compute the pointwise minimum distance of the input surface from a reference surface')
self.SetInputMembers([
['Surface','i','vtkPolyData',1,'','the input surface','vmtksurfacereader'],
['ReferenceSurface','r','vtkPolyData',1,'','the reference surface','vmtksurfacereader'],
['DistanceArrayName','distancearray','str',1,'','name of the array where the distance of the input surface to the reference surface has to be stored'],
['DistanceVectorsArrayName','distancevectorsarray','str',1,'','name of the array where the distance vectors of the input surface to the reference surface has to be stored'],
['SignedDistanceArrayName','signeddistancearray','str',1,'','name of the array where the signed distance of the input surface to the reference surface is stored; distance is positive if distance vector and normal to the reference surface have negative dot product, i.e. if the input surface is outer with respect to the reference surface'],
['FlipNormals','flipnormals','bool',1,'','flip normals to the reference surface 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.')
if self.ReferenceSurface == None:
self.PrintError('Error: No ReferenceSurface.')
if self.SignedDistanceArrayName != '':
normalsFilter = vtk.vtkPolyDataNormals()
normalsFilter.SetInputData(self.ReferenceSurface)
normalsFilter.AutoOrientNormalsOn()
normalsFilter.SetFlipNormals(self.FlipNormals)
normalsFilter.Update()
self.ReferenceSurface.GetPointData().SetNormals(normalsFilter.GetOutput().GetPointData().GetNormals())
if self.DistanceArrayName != '' or self.DistanceVectorsArrayName != '' or self.SignedDistanceArrayName != '':
self.PrintLog('Computing distance.')
surfaceDistance = vtkvmtk.vtkvmtkSurfaceDistance()
surfaceDistance.SetInputData(self.Surface)
surfaceDistance.SetReferenceSurface(self.ReferenceSurface)
if self.DistanceArrayName != '':
surfaceDistance.SetDistanceArrayName(self.DistanceArrayName)
if self.DistanceVectorsArrayName != '':
surfaceDistance.SetDistanceVectorsArrayName(self.DistanceVectorsArrayName)
if self.SignedDistanceArrayName != '':
surfaceDistance.SetSignedDistanceArrayName(self.SignedDistanceArrayName)
surfaceDistance.Update()
self.Surface = surfaceDistance.GetOutput()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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