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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtksurfaceregiondrawing.py,v $
## Language: Python
## Date: $Date: 2006/05/26 12:35:13 $
## Version: $Revision: 1.9 $
## 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
vmtksurfaceregiondrawing = 'vmtkSurfaceRegionDrawing'
class vmtkSurfaceRegionDrawing(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Surface = None
self.vmtkRenderer = None
self.OwnRenderer = 0
self.Actor = None
self.ContourWidget = None
self.Interpolator = None
self.Binary = 1
self.OutsideValue = 1.0
self.InsideValue = 0.0
self.ContourScalarsArrayName = 'ContourScalars'
self.SetScriptName('vmtksurfaceregiondrawing')
self.SetScriptDoc('draw a closed contour on a surface and generate a distance field on the surface')
self.SetInputMembers([
['Surface','i','vtkPolyData',1,'','the input surface','vmtksurfacereader'],
['Binary','binary','bool',1,'','fill contour with inside value instead of distance to contour'],
['InsideValue','inside','float',1,'','value with which the surface within the contour is filled'],
['OutsideValue','outside','float',1,'','value with which the surface outside the contour is filled'],
['ContourScalarsArrayName','array','str',1,'','the name of the array where the generated scalars are stored'],
['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer']
])
self.SetOutputMembers([
['Surface','o','vtkPolyData',1,'','the output surface','vmtksurfacewriter']
])
def ScalarsCallback(self, obj):
rep = vtk.vtkOrientedGlyphContourRepresentation.SafeDownCast(self.ContourWidget.GetRepresentation())
pointIds = vtk.vtkIdList()
self.Interpolator.GetContourPointIds(rep,pointIds)
points = vtk.vtkPoints()
points.SetNumberOfPoints(pointIds.GetNumberOfIds())
for i in range(pointIds.GetNumberOfIds()):
pointId = pointIds.GetId(i)
point = self.Surface.GetPoint(pointId)
points.SetPoint(i,point)
selectionFilter = vtk.vtkSelectPolyData()
selectionFilter.SetInputData(self.Surface)
selectionFilter.SetLoop(points)
selectionFilter.GenerateSelectionScalarsOn()
selectionFilter.SetSelectionModeToSmallestRegion()
selectionFilter.Update()
selectionScalars = selectionFilter.GetOutput().GetPointData().GetScalars()
contourScalars = self.Surface.GetPointData().GetArray(self.ContourScalarsArrayName)
for i in range(contourScalars.GetNumberOfTuples()):
selectionValue = selectionScalars.GetTuple1(i)
if self.Binary:
if selectionValue < 0.0:
contourScalars.SetTuple1(i,self.InsideValue)
else:
contourValue = contourScalars.GetTuple1(i)
if (not contourValue < 0.0 and selectionValue < 0.0) or (contourValue < 0.0 and selectionValue < contourValue):
contourScalars.SetTuple1(i,selectionValue)
self.Actor.GetMapper().SetScalarRange(contourScalars.GetRange(0))
self.Surface.Modified()
self.ContourWidget.Initialize()
def DeleteContourCallback(self, obj):
self.ContourWidget.Initialize()
def InteractCallback(self, obj):
if self.ContourWidget.GetEnabled() == 1:
self.ContourWidget.SetEnabled(0)
else:
self.ContourWidget.SetEnabled(1)
def Display(self):
self.vmtkRenderer.Render()
def Execute(self):
if self.Surface == None:
self.PrintError('Error: no Surface.')
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
triangleFilter = vtk.vtkTriangleFilter()
triangleFilter.SetInputData(self.Surface)
triangleFilter.Update()
self.Surface = triangleFilter.GetOutput()
contourScalars = vtk.vtkDoubleArray()
contourScalars.SetNumberOfComponents(1)
contourScalars.SetNumberOfTuples(self.Surface.GetNumberOfPoints())
contourScalars.SetName(self.ContourScalarsArrayName)
contourScalars.FillComponent(0,self.OutsideValue)
self.Surface.GetPointData().AddArray(contourScalars)
self.Surface.GetPointData().SetActiveScalars(self.ContourScalarsArrayName)
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputData(self.Surface)
mapper.ScalarVisibilityOn()
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
self.Actor.GetMapper().SetScalarRange(-1.0,0.0)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
self.ContourWidget = vtk.vtkContourWidget()
self.ContourWidget.SetInteractor(self.vmtkRenderer.RenderWindowInteractor)
rep = vtk.vtkOrientedGlyphContourRepresentation.SafeDownCast(self.ContourWidget.GetRepresentation())
rep.GetLinesProperty().SetColor(1, 0.2, 0)
rep.GetLinesProperty().SetLineWidth(3.0)
pointPlacer = vtk.vtkPolygonalSurfacePointPlacer()
pointPlacer.AddProp(self.Actor)
pointPlacer.GetPolys().AddItem(self.Surface)
rep.SetPointPlacer(pointPlacer)
self.Interpolator = vtk.vtkPolygonalSurfaceContourLineInterpolator()
self.Interpolator.GetPolys().AddItem(self.Surface)
rep.SetLineInterpolator(self.Interpolator)
self.vmtkRenderer.AddKeyBinding('space','Generate scalars',self.ScalarsCallback)
self.vmtkRenderer.AddKeyBinding('d','Delete contour',self.DeleteContourCallback)
self.vmtkRenderer.AddKeyBinding('i','Start interaction',self.InteractCallback)
self.Display()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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