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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtksurfacescaling.py,v $
## Language: Python
## Date: $Date: 2005/09/14 09:49:59 $
## Version: $Revision: 1.4 $
## 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
vmtksurfacescaling = 'vmtkSurfaceScaling'
class vmtkSurfaceScaling(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Surface = None
self.ScaleFactor = None
self.ScaleFactorX = None
self.ScaleFactorY = None
self.ScaleFactorZ = None
self.SetScriptName('vmtksurfacescaling')
self.SetScriptDoc('scale a surface by an isotropic factor, or x,y,z directions by separate factors')
self.SetInputMembers([
['Surface','i','vtkPolyData',1,'','the input surface','vmtksurfacereader'],
['ScaleFactor','scale','float',1,'(0.0,)','isotropic scaling factor'],
['ScaleFactorX','scalex','float',1,'(0.0,)','scaling factor in x direction'],
['ScaleFactorY','scaley','float',1,'(0.0,)','scaling factor in y direction'],
['ScaleFactorZ','scalez','float',1,'(0.0,)','scaling factor in z direction'],
])
self.SetOutputMembers([
['Surface','o','vtkPolyData',1,'','the output surface','vmtksurfacewriter']
])
def Execute(self):
if (self.Surface == None):
self.PrintError('Error: no Surface.')
transform = vtk.vtkTransform()
s = self.ScaleFactor or 1.0
x = self.ScaleFactorX or 1.0
y = self.ScaleFactorY or 1.0
z = self.ScaleFactorZ or 1.0
transform.Scale(s*x, s*y, s*z)
transformFilter = vtk.vtkTransformPolyDataFilter()
transformFilter.SetInputData(self.Surface)
transformFilter.SetTransform(transform)
transformFilter.Update()
self.Surface = transformFilter.GetOutput()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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