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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkmeshcutter.py,v $
## Language: Python
## Date: $Date: 2006/05/26 12:35:13 $
## 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 vmtkrenderer
import pypes
vmtkmeshcutter = 'vmtkMeshCutter'
class vmtkMeshCutter(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.Surface = None
self.vmtkRenderer = None
self.OwnRenderer = 0
self.Actor = None
self.Display = 1
self.PlaneWidget = None
self.ObserverId = -1
self.Opacity = 0.05
self.SetScriptName('vmtkmeshcutter')
self.SetScriptDoc('slicing a mesh with a plane')
self.SetInputMembers([
['Mesh','i','vtkUnstructuredGrid',1,'','the input mesh','vmtkmeshreader'],
['Display','display','bool',1,'','toggle rendering'],
['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer'],
['Opacity','opacity','float',0.05,'(0.0,1.0)','object opacity in the scene']
])
self.SetOutputMembers([
['Surface','o','vtkPolyData',1,'','the output surface','vmtksurfacewriter']
])
def CutMesh(self):
cutPlane = vtk.vtkPlane()
self.PlaneWidget.GetPlane(cutPlane)
self.MeshCutFilter.SetCutFunction(cutPlane)
self.MeshCutFilter.Update()
self.Actor = vtk.vtkActor()
mapper = vtk.vtkDataSetMapper()
mapper.SetInputConnection(self.MeshCutFilter.GetOutputPort())
self.Actor.SetMapper(mapper)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
def StartPlaneCallback(self,widget,event_string):
pass
def EndPlaneCallback(self,widget,event_string):
self.CutMesh()
def BuildView(self):
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
self.PlaneWidget = vtk.vtkImplicitPlaneWidget()
if self.Actor != None:
self.vmtkRenderer.Renderer.RemoveActor(self.Actor)
if self.Mesh != None:
self.MeshCutFilter = vtk.vtkCutter()
self.MeshCutFilter.SetInputData(self.Mesh)
cutPlane = vtk.vtkPlane()
self.PlaneWidget.GetPlane(cutPlane)
self.MeshCutFilter.SetCutFunction(cutPlane)
self.MeshCutFilter.Update()
self.Surface = self.MeshCutFilter.GetOutput()
self.PlaneWidget.AddObserver("StartInteractionEvent",self.StartPlaneCallback)
self.PlaneWidget.AddObserver("EndInteractionEvent",self.EndPlaneCallback)
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(self.Mesh)
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
self.Actor.GetProperty().SetOpacity(self.Opacity)
self.PlaneWidget.SetInteractor(self.vmtkRenderer.RenderWindowInteractor)
self.PlaneWidget.SetPlaceFactor(1.25)
self.PlaneWidget.DrawPlaneOn()
self.PlaneWidget.GetPlaneProperty().SetOpacity(0.1)
self.PlaneWidget.SetProp3D(self.Actor)
self.PlaneWidget.PlaceWidget()
self.PlaneWidget.SetOrigin(self.Actor.GetCenter())
self.PlaneWidget.On()
if (self.Display == 1):
self.vmtkRenderer.Render()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
def Execute(self):
if self.Mesh == None and self.Display == 1:
self.PrintError('Error: no Mesh.')
self.BuildView()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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