#!/usr/bin/env python

## Program:   VMTK
## Module:    $RCSfile: vmtknetworkeditor.py,v $
## Language:  Python
## Date:      $Date: 2006/05/26 12:35:13 $
## Version:   $Revision: 1.3 $

##   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.

##   Developed with support from the EC FP7/2007-2013: ARCH, Project n. 224390

import vtk
import sys

import vtkvmtk
import vmtkrenderer
import vmtkimageviewer
import vmtkimagefeatures
import pypes

import vmtkactivetubes

vmtknetworkeditor = 'vmtkNetworkEditor'

class vmtkNetworkEditor(pypes.pypeScript):

    def __init__(self):

        pypes.pypeScript.__init__(self)
        
        self.Network = None
        self.RadiusArrayName = 'Radius'
        self.LabelsArrayName = 'Labels'

        self.SplineInterpolation = 1

        self.UseActiveTubes = 0
        self.NumberOfIterations = 100
        self.PotentialWeight = 1.0
        self.StiffnessWeight = 0.0

        self.NetworkTube = None

        self.Selection = None
        self.SelectionPoints = None
        self.SelectionRadiusArray = None
        self.SelectionActor = None
        self.SelectedCellId = -1
        self.SelectedSubId = -1
        self.SelectedPCoords = 0.0

        self.ActiveSegment = None
        self.ActiveSegmentPoints = None
        self.ActiveSegmentCellArray = None
        self.ActiveSegmentRadiusArray = None
        self.ActiveSegmentActor = None

        self.ActiveSegmentSeeds = None
        self.ActiveSegmentSeedsPoints = None
        self.ActiveSegmentSeedsRadiusArray = None
        self.ActiveSegmentSeedsActor = None

        self.AttachedCellIds = [-1,-1]
        self.AttachedSubIds = [-1,-1]
        self.AttachedPCoords = [0.0,0.0]

        self.PlaneWidgetX = None
        self.PlaneWidgetY = None
        self.PlaneWidgetZ = None

        self.Image = None
        self.FeatureImage = None

        self.CurrentRadius = 0.0

        self.NetworkRadiusArray = None
        self.NetworkLabelsArray = None

        self.CellPicker = None

        self.CellIdsToMerge = []

        self.OperationMode = None
        self.PickMode = 'image'

        self.vmtkRenderer = None
        self.OwnRenderer = 0

        self.SetScriptName('vmtknetworkeditor')
        self.SetScriptDoc('')
        self.SetInputMembers([
            ['Network','i','vtkPolyData',1,'','the input network','vmtksurfacereader'],
            ['RadiusArrayName','radiusarray','str',1,''],
            ['LabelsArrayName','labelsarray','str',1,''],
            ['SplineInterpolation','spline','bool',1,''],
            ['UseActiveTubes','activetubes','bool',1,''],
            ['NumberOfIterations','iterations','int',1,'(0,)'],
            ['PotentialWeight','potentialweight','float',1,'(0.0,)'],
            ['StiffnessWeight','stiffnessweight','float',1,'(0.0,)'],
            ['PlaneWidgetX','xplane','vtkImagePlaneWidget',1,'','the X image plane widget'],
            ['PlaneWidgetY','yplane','vtkImagePlaneWidget',1,'','the Y image plane widget'],
            ['PlaneWidgetZ','zplane','vtkImagePlaneWidget',1,'','the Z image plane widget'],
            ['Image','image','vtkImageData',1,'','','vmtkimagereader'],
            ['FeatureImage','featureimage','vtkImageData',1,'','','vmtkimagereader'],
            ['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer']])
        self.SetOutputMembers([
            ['Network','o','vtkPolyData',1,'','the output network','vmtknetworkwriter'],
            ['RadiusArrayName','oradiusarray','str',1,''],
            ['Surface','osurface','vtkPolyData',1,'','the output surface','vmtksurfacewriter']])

    def TogglePickMode(self):
        if self.PickMode == 'image':
            self.PickMode = 'network'
        else:
            self.PickMode = 'image'

    def TogglePlaneWidget(self,planeWidget):
        if not planeWidget:
            return
        interaction = planeWidget.GetInteraction()
        if interaction:
            planeWidget.InteractionOff()
        else:
            planeWidget.InteractionOn()

    def UpdateLabels(self):
        self.CellCenters.Modified()
        self.CellCenters.Update()
        self.Render()

    def ToggleLabels(self):
        if self.LabelsActor.GetVisibility() == 1:
            self.LabelsActor.VisibilityOff()
        else:
            self.LabelsActor.VisibilityOn()
        self.Render()

    def SetPickMode(self,pickMode):
        if pickMode == 'image':
            self.PickMode = 'image'
            if self.PlaneWidgetX:
                self.PlaneWidgetX.InteractionOn()
            if self.PlaneWidgetY:
                self.PlaneWidgetY.InteractionOn()
            if self.PlaneWidgetZ:
                self.PlaneWidgetZ.InteractionOn()
        elif pickMode == 'network':
            self.PickMode = 'network'
            if self.PlaneWidgetX:
                self.PlaneWidgetX.InteractionOff()
            if self.PlaneWidgetY:
                self.PlaneWidgetY.InteractionOff()
            if self.PlaneWidgetZ:
                self.PlaneWidgetZ.InteractionOff()

    def KeyReleaseCallback(self,obj,event):
        pass
        #key = object.GetKeySym()
        #if self.OperationMode == 'add':
        #    if key == 'Shift_L' or key == 'Shift_R':
        #        if self.PickMode == 'network':
        #            self.SetPickMode('image')
    
    def CheckMenu(self):
        self.vmtkRenderer.RemoveKeyBinding('space')
        self.vmtkRenderer.RemoveKeyBinding('c')
        self.vmtkRenderer.RemoveKeyBinding('u')
        self.vmtkRenderer.RemoveKeyBinding('+')
        self.vmtkRenderer.RemoveKeyBinding('-')
        self.vmtkRenderer.RemoveKeyBinding('=')
        self.vmtkRenderer.RemoveKeyBinding('Return')

    def ShowLabelCallback(self, obj):
        self.ToggleLabels()

    def AddCallback(self, obj):
        self.InputInfo('Switched to add mode.\nCtrl + left click to add tubes.')
        #self.PrintLog('Add mode')
        self.OperationMode = 'add'
        self.InitializeActiveSegment()
        self.vmtkRenderer.AddKeyBinding('space','Toggle image/tube interaction',self.SpaceCallback, '2')
        self.vmtkRenderer.AddKeyBinding('c','Cancel',self.CancelCallback,'2')
        self.vmtkRenderer.AddKeyBinding('u','Undo',self.UndoCallback,'2')
        self.vmtkRenderer.AddKeyBinding('+','Increase radius',self.PlusCallback,'2')
        self.vmtkRenderer.AddKeyBinding('=','Increase radius',self.PlusCallback,'2')
        self.vmtkRenderer.AddKeyBinding('-','Decrease radius',self.MinusCallback,'2')
        self.vmtkRenderer.AddKeyBinding('Return','Accept tube',self.ReturnAddCallback,'2')
        self.UpdateAndRender()

    def DeleteCallback(self, obj):
        self.InputInfo('Switched to delete mode.\nCtrl + left click to delete tubes.')
        #self.PrintLog('Delete mode')
        self.OperationMode = 'delete'
        self.InitializeActiveSegment()
        self.CheckMenu()
        if self.PickMode == 'image':
            self.SetPickMode('network')
            self.InitializeActiveSegment()
        self.UpdateAndRender()

    def SplitCallback(self, obj):
        self.InputInfo('Switched to split mode.\nCtrl + left click to split tubes.')
        #self.PrintLog('Split mode')
        self.OperationMode = 'split'
        self.InitializeActiveSegment()
        self.CheckMenu()
        if self.PickMode == 'image':
            self.SetPickMode('network')
            self.InitializeActiveSegment()
        self.UpdateAndRender()

    def LabelCallback(self, obj):
        #self.PrintLog('Label mode')
        self.InputInfo('Switched to label mode.\nCtrl + left click to add label.')
        self.OperationMode = 'label'
        self.InitializeActiveSegment()
        self.CheckMenu()
        if self.PickMode == 'image':
            self.SetPickMode('network')
            self.InitializeActiveSegment()
        self.UpdateAndRender()

    def MergeCallback(self, obj):
        self.InputInfo('Switched to merge mode.\nCtrl + left click to select two tubes to merge.')
        #self.PrintLog('Merge mode')
        self.OperationMode = 'merge'
        self.InitializeActiveSegment()
        self.CheckMenu()
        if self.PickMode == 'image':
            self.SetPickMode('network')
            self.InitializeActiveSegment()
            self.CellIdsToMerge = []
        self.vmtkRenderer.AddKeyBinding('Return','Accept merge',self.ReturnCallback,'2')
        self.UpdateAndRender()

    def SpaceCallback(self, obj):
        self.TogglePickMode()
        self.TogglePlaneWidget(self.PlaneWidgetX)
        self.TogglePlaneWidget(self.PlaneWidgetY)
        self.TogglePlaneWidget(self.PlaneWidgetZ)
        self.InputInfo('Ctrl + left click to add seeds.')	

    def CancelCallback(self, obj):
        self.InitializeActiveSegment()

    def UndoCallback(self, obj):
        numberOfSeeds = self.ActiveSegmentSeedsPoints.GetNumberOfPoints()
        if numberOfSeeds > 0:
            self.ActiveSegmentSeedsPoints.SetNumberOfPoints(numberOfSeeds-1)
            self.ActiveSegmentSeedsRadiusArray.SetNumberOfValues(numberOfSeeds-1)
            self.ActiveSegmentSeeds.Modified()
            self.AttachedCellIds[1] = -1
            self.AttachedSubIds[1] = -1
            self.AttachedPCoords[1] = 0.0
        else:
            self.AttachedCellIds[0] = -1
            self.AttachedSubIds[0] = -1
            self.AttachedPCoords[0] = 0.0
        numberOfPoints = self.ActiveSegmentPoints.GetNumberOfPoints()
        if numberOfPoints > 2:
            self.ActiveSegmentPoints.SetNumberOfPoints(numberOfPoints-1)
            self.ActiveSegmentRadiusArray.SetNumberOfValues(numberOfPoints-1)
            self.ActiveSegmentCellArray.Initialize()
            self.ActiveSegmentCellArray.InsertNextCell(numberOfPoints-1)
            for i in range(numberOfPoints-1):
                self.ActiveSegmentCellArray.InsertCellPoint(i)
            self.ActiveSegment.Modified()
        else:
            self.ActiveSegmentPoints.SetNumberOfPoints(0)
            self.ActiveSegmentCellArray.Initialize()
            self.ActiveSegmentRadiusArray.SetNumberOfValues(0)
            self.ActiveSegment.Modified()
        self.UpdateAndRender()

    def PlusCallback(self, obj):
        numberOfSeeds = self.ActiveSegmentSeedsPoints.GetNumberOfPoints()
        if numberOfSeeds > 0:
            radius = self.ActiveSegmentSeedsRadiusArray.GetValue(numberOfSeeds-1)
            radius += 0.1
            self.ActiveSegmentSeedsRadiusArray.SetValue(numberOfSeeds-1,radius)
            self.CurrentRadius = radius
            self.ActiveSegmentSeeds.Modified()
        numberOfPoints = self.ActiveSegmentPoints.GetNumberOfPoints()
        if numberOfPoints > 0:
            radius = self.ActiveSegmentRadiusArray.GetValue(numberOfPoints-1)
            radius += 0.1
            self.ActiveSegmentRadiusArray.SetValue(numberOfPoints-1,radius)
            self.ActiveSegment.Modified()
        self.UpdateAndRender()

    def MinusCallback(self, obj):
        numberOfSeeds = self.ActiveSegmentSeedsPoints.GetNumberOfPoints()
        if numberOfSeeds > 0:
            radius = self.ActiveSegmentSeedsRadiusArray.GetValue(numberOfSeeds-1)
            radius -= 0.1
            if radius > 0.0:
                self.ActiveSegmentSeedsRadiusArray.SetValue(numberOfSeeds-1,radius)
                self.CurrentRadius = radius
                self.ActiveSegmentSeeds.Modified()
        numberOfPoints = self.ActiveSegmentPoints.GetNumberOfPoints()
        if numberOfPoints > 0:
            radius = self.ActiveSegmentRadiusArray.GetValue(numberOfPoints-1)
            radius -= 0.1
            if radius > 0.0:
                self.ActiveSegmentRadiusArray.SetValue(numberOfPoints-1,radius)
                self.ActiveSegment.Modified()
        self.UpdateAndRender()

    def ReturnAddCallback(self, obj):
        attachedPointId0 = -1
        attachedPointId1 = -1
        cellIdsToRemove = []
        if self.AttachedCellIds[0] != -1:
            attachedPointId0, hasSplit = self.SplitCellNoRemove(self.AttachedCellIds[0],self.AttachedSubIds[0],self.AttachedPCoords[0])
            if hasSplit:
                cellIdsToRemove.append(self.AttachedCellIds[0])
        if self.AttachedCellIds[1] != -1:
            attachedPointId1, hasSplit = self.SplitCellNoRemove(self.AttachedCellIds[1],self.AttachedSubIds[1],self.AttachedPCoords[1])
            if hasSplit:
                cellIdsToRemove.append(self.AttachedCellIds[1])
        if cellIdsToRemove:
            self.RemoveCells(cellIdsToRemove)
        segment = self.ActiveSegmentActor.GetMapper().GetInput()
        if self.UseActiveTubes:
            self.RunActiveTube(segment)
        segmentRadiusArray = segment.GetPointData().GetArray(self.RadiusArrayName)
        numberOfSegmentPoints = segment.GetNumberOfPoints()
        networkPoints = self.Network.GetPoints()
        networkCellArray = self.Network.GetLines()
        cellId = networkCellArray.InsertNextCell(numberOfSegmentPoints)
        for i in range(numberOfSegmentPoints):
            id = -1
            if i == 0 and attachedPointId0 != -1:
                id = attachedPointId0
            elif i == numberOfSegmentPoints-1 and attachedPointId1 != -1:
                id = attachedPointId1
            else:
                id = networkPoints.InsertNextPoint(segment.GetPoint(i))
                self.NetworkRadiusArray.InsertTuple1(id,segmentRadiusArray.GetTuple1(i))
            networkCellArray.InsertCellPoint(id)
        self.NetworkLabelsArray.InsertValue(cellId,'')
        self.Network.BuildCells()
        self.Network.Modified()
        self.NetworkTube.Modified()
        self.UpdateLabels()
        #if self.Image and self.PickMode == 'network':
        #    self.SetPickMode('image')
        self.InitializeSelection()
        self.InitializeActiveSegment()

    def ReturnCallback(self, obj):
        numberOfActiveCells = self.ActiveSegment.GetNumberOfCells()
        if numberOfActiveCells != 2 or len(self.CellIdsToMerge) != 2:
            return
        cell0ToMerge = self.Network.GetCell(self.CellIdsToMerge[0])
        cell0PointIds = vtk.vtkIdList()
        cell0PointIds.DeepCopy(cell0ToMerge.GetPointIds())
        numberOfCell0Points = cell0PointIds.GetNumberOfIds()
        cell1ToMerge = self.Network.GetCell(self.CellIdsToMerge[1])
        cell1PointIds = vtk.vtkIdList()
        cell1PointIds.DeepCopy(cell1ToMerge.GetPointIds())
        numberOfCell1Points = cell1PointIds.GetNumberOfIds()
        reverse = [False,False] 
        if cell0PointIds.GetId(numberOfCell0Points-1) == cell1PointIds.GetId(0):
            reverse = [False,False]
        elif cell0PointIds.GetId(numberOfCell0Points-1) == cell1PointIds.GetId(numberOfCell1Points-1):
            reverse = [False,True]
        elif cell0PointIds.GetId(0) == cell1PointIds.GetId(numberOfCell1Points-1):
            reverse = [True,True]
        elif cell0PointIds.GetId(0) == cell1PointIds.GetId(0):
            reverse = [True,False]
        else:
            self.PrintLog('Error: trying to merge non-adjacent segments.')
            return
        mergedLabel = self.NetworkLabelsArray.GetValue(self.CellIdsToMerge[0])
        self.RemoveCells(self.CellIdsToMerge)
        networkCellArray = self.Network.GetLines()
        cellId = networkCellArray.InsertNextCell(numberOfCell0Points+numberOfCell1Points-1)
        for i in range(numberOfCell0Points):
            loc = i
            if reverse[0]:
                loc = numberOfCell0Points - 1 - i
            networkCellArray.InsertCellPoint(cell0PointIds.GetId(loc))
        for i in range(1,numberOfCell1Points):
            loc = i
            if reverse[1]:
                loc = numberOfCell1Points - 1 - i
            networkCellArray.InsertCellPoint(cell1PointIds.GetId(loc))
        self.NetworkLabelsArray.InsertValue(cellId,mergedLabel)
        self.Network.SetLines(networkCellArray)
        self.Network.BuildCells()
        self.Network.Modified()
        self.NetworkTube.Modified()
        self.UpdateLabels()
        self.InitializeActiveSegment()
        self.CellIdsToMerge = []

    def RemoveCell(self,cellId):
        self.RemoveCells([cellId])

    def RemoveCells(self,cellIds):
        networkCellArray = vtk.vtkCellArray()
        networkLabelsArray = vtk.vtkStringArray()
        numberOfCells = self.Network.GetNumberOfCells()
        for i in range(numberOfCells):
            if i in cellIds:
                continue
            networkCellArray.InsertNextCell(self.Network.GetCell(i))
            networkLabelsArray.InsertNextValue(self.NetworkLabelsArray.GetValue(i))
        self.Network.SetLines(networkCellArray)
        self.NetworkLabelsArray.DeepCopy(networkLabelsArray)
        self.Network.BuildCells()
        self.Network.Modified()

    def SplitCell(self,cellId,subId,pcoord):
        splitPointId, hasSplit = self.SplitCellNoRemove(cellId,subId,pcoord)
        if hasSplit:
            self.RemoveCell(cellId)
        return splitPointId, hasSplit

    def SplitCellNoRemove(self,cellId,subId,pcoord):
        splitId = subId
        if pcoord > 0.5:
            splitId = subId+1
        cell = self.Network.GetCell(cellId)
        label = self.NetworkLabelsArray.GetValue(cellId)
        numberOfCellPoints = cell.GetNumberOfPoints()
        cellPointIds = cell.GetPointIds()
        splitPointId = cellPointIds.GetId(splitId)
        if splitId == 0 or splitId == numberOfCellPoints-1:
            return splitPointId, False
        lines = self.Network.GetLines()
        newCellId1 = lines.InsertNextCell(splitId+1)
        for i in range(splitId+1):
            lines.InsertCellPoint(cellPointIds.GetId(i))
        newCellId2 = lines.InsertNextCell(numberOfCellPoints-splitId)
        for i in range(splitId,numberOfCellPoints):
            lines.InsertCellPoint(cellPointIds.GetId(i))
        newLabel1 = ''
        newLabel2 = ''
        if label:
            newLabel1 = label + "1"
            newLabel2 = label + "2"
        self.NetworkLabelsArray.InsertValue(newCellId1,newLabel1)
        self.NetworkLabelsArray.InsertValue(newCellId2,newLabel2)
        self.Network.BuildCells()
        return splitPointId, True

    def LeftButtonPressCallback(self,obj,event):
        if self.PickMode != 'network':
            return
        if self.vmtkRenderer.RenderWindowInteractor.GetControlKey() == 0:
            return
        if self.Network.GetNumberOfCells() == 0:
            return
        cellId = self.SelectedCellId
        if cellId == -1:
            return
        subId = self.SelectedSubId
        pcoords = self.SelectedPCoords
        cell = self.Network.GetCell(cellId)
        if pcoords < 0.5:
            pointId = cell.GetPointIds().GetId(subId)
        else:
            pointId = cell.GetPointIds().GetId(subId+1)
        point = self.Network.GetPoint(pointId)
        radius = self.NetworkRadiusArray.GetValue(pointId)
        if self.OperationMode == 'add':
            if radius == 0.0:
                radius = 1.0
            if self.ActiveSegmentSeeds.GetNumberOfPoints() == 0:
                self.ActiveSegmentSeedsPoints.InsertNextPoint(point)
                self.ActiveSegmentSeedsRadiusArray.InsertNextValue(radius)
                self.ActiveSegmentSeeds.Modified()
                self.AttachedCellIds[0] = cellId
                self.AttachedSubIds[0] = subId
                self.AttachedPCoords[0] = pcoords
                self.Render()
                return
            if self.AttachedCellIds[1] != -1:
                return
            self.AttachedCellIds[1] = cellId
            self.AttachedSubIds[1] = subId
            self.AttachedPCoords[1] = pcoords
            if self.ActiveSegmentPoints.GetNumberOfPoints() == 0:
                self.ActiveSegmentPoints.InsertNextPoint(self.ActiveSegmentSeedsPoints.GetPoint(0))
                self.ActiveSegmentRadiusArray.InsertNextValue(self.ActiveSegmentSeedsRadiusArray.GetValue(0))
            self.ActiveSegmentSeedsPoints.InsertNextPoint(point)
            self.ActiveSegmentSeedsRadiusArray.InsertNextValue(radius)
            self.ActiveSegmentSeeds.Modified()
            self.ActiveSegmentPoints.InsertNextPoint(point)
            self.ActiveSegmentRadiusArray.InsertNextValue(radius)
            self.ActiveSegmentCellArray.Initialize()
            numberOfPoints = self.ActiveSegmentPoints.GetNumberOfPoints()
            self.ActiveSegmentCellArray.InsertNextCell(numberOfPoints)
            for i in range(numberOfPoints):
                self.ActiveSegmentCellArray.InsertCellPoint(i)
            self.ActiveSegment.Modified()
            self.Render()
        elif self.OperationMode == 'delete':
            self.InitializeSelection()
            self.RemoveCell(cellId)
            self.NetworkTube.Modified()
            self.UpdateLabels()
        elif self.OperationMode == 'split':
            numberOfCellPoints = cell.GetNumberOfPoints()
            self.SplitCell(cellId,subId,pcoords)
            self.NetworkTube.Modified()
            self.UpdateLabels()
        elif self.OperationMode == 'label':
            self.LabelCellId = cellId
            label = self.NetworkLabelsArray.GetValue(cellId)
            if label:
                self.PrintLog("Current label: %s" % label)
            self.vmtkRenderer.PromptAsync("Please input new label: ",self.QueryLabelCallback)
        elif self.OperationMode == 'merge':
            if self.ActiveSegment.GetNumberOfCells() > 1:
                self.InitializeActiveSegment()
                self.CellIdsToMerge = []
            self.CellIdsToMerge.append(cellId)
            numberOfCellPoints = cell.GetNumberOfPoints()
            activePointIds = []
            for i in range(numberOfCellPoints):
                pointId = cell.GetPointId(i)
                point = self.Network.GetPoint(pointId)
                radius = self.NetworkRadiusArray.GetTuple1(pointId)
                activePointId = self.ActiveSegmentPoints.InsertNextPoint(point)
                self.ActiveSegmentRadiusArray.InsertNextValue(radius)
                activePointIds.append(activePointId)
            self.ActiveSegmentCellArray.InsertNextCell(numberOfCellPoints)
            for i in range(numberOfCellPoints):
                self.ActiveSegmentCellArray.InsertCellPoint(activePointIds[i])
            self.ActiveSegment.Modified()
            self.NetworkTube.Modified()
            self.Render()

    def QueryLabelCallback(self,newLabel):
        self.NetworkLabelsArray.SetValue(self.LabelCellId,newLabel)
        self.LabelCellId = None
        self.InitializeSelection()
        self.Network.Modified()
        self.UpdateLabels()

    def InitializeSelection(self):
        self.SelectionPoints.SetNumberOfPoints(0)
        self.SelectionRadiusArray.SetNumberOfValues(0)
        self.SelectedCellId = -1
        self.SelectedSubId = -1
        self.SelectedPCoords = 0.0
        self.Selection.Modified()
        self.Render()

    def InitializeActiveSegment(self):
        self.ActiveSegmentSeedsPoints.SetNumberOfPoints(0)
        self.ActiveSegmentSeedsRadiusArray.SetNumberOfValues(0)
        self.ActiveSegmentSeeds.Modified()
        self.ActiveSegmentPoints.SetNumberOfPoints(0)
        self.ActiveSegmentCellArray.Initialize()
        self.ActiveSegmentCellArray.SetNumberOfCells(0)
        self.ActiveSegmentRadiusArray.SetNumberOfValues(0)
        self.ActiveSegment.Modified()
        self.AttachedCellIds = [-1,-1]
        self.AttachedSubIds = [-1,-1]
        self.AttachedPCoords = [0.0,0.0]
        self.Render()

    def MouseMoveCallback(self,obj,event):
        if self.PickMode != 'network':
            return
        if self.vmtkRenderer.RenderWindowInteractor.GetControlKey() == 0:
            if self.SelectedCellId != -1:
                self.InitializeSelection()
            return
        if self.Network.GetNumberOfCells() == 0:
            return
        eventPosition = self.vmtkRenderer.RenderWindowInteractor.GetEventPosition()
        result = self.CellPicker.Pick(float(eventPosition[0]),float(eventPosition[1]),0.0,self.vmtkRenderer.Renderer)
        if result == 0:
            return
        cellId = self.CellPicker.GetCellId()
        cell = self.Network.GetCell(cellId)
        subId = self.CellPicker.GetSubId()
        pcoords = self.CellPicker.GetPCoords()[0]
        if pcoords < 0.5:
            pointId = cell.GetPointIds().GetId(subId)
        else:
            pointId = cell.GetPointIds().GetId(subId+1)
        if self.vmtkRenderer.RenderWindowInteractor.GetShiftKey() == 1:
            if subId < cell.GetNumberOfPoints()/2:
                pointId = cell.GetPointIds().GetId(0)
            else:
                pointId = cell.GetPointIds().GetId(cell.GetNumberOfPoints()-1)
        point = self.Network.GetPoint(pointId)
        radius = self.NetworkRadiusArray.GetValue(pointId)
        if radius == 0.0:
            radius = 1.0
        self.SelectionPoints.InsertPoint(0,point)
        self.SelectionRadiusArray.InsertValue(0,radius)
        self.SelectedCellId = cellId
        self.SelectedSubId = subId
        self.SelectedPCoords = pcoords
        self.Selection.Modified()
        self.Render()

    def PlaneStartInteractionCallback(self,obj,event):
        if self.PickMode != 'image':
            return
        if self.OperationMode != 'add':
            return
        if self.vmtkRenderer.RenderWindowInteractor.GetControlKey() == 0:
            return
        point = obj.GetCurrentCursorPosition()
        radius = self.CurrentRadius
        if self.ActiveSegmentSeeds.GetNumberOfPoints() == 0:
            self.ActiveSegmentSeedsPoints.InsertNextPoint(point)
            self.ActiveSegmentSeedsRadiusArray.InsertNextValue(radius)
            self.ActiveSegmentSeeds.Modified()
            self.Render()
            return
        if self.AttachedCellIds[1] != -1:
            return
        if self.ActiveSegmentPoints.GetNumberOfPoints() == 0:
            self.ActiveSegmentPoints.InsertNextPoint(self.ActiveSegmentSeedsPoints.GetPoint(0))
            self.ActiveSegmentRadiusArray.InsertNextValue(self.ActiveSegmentSeedsRadiusArray.GetValue(0))
        self.ActiveSegmentSeedsPoints.InsertNextPoint(point)
        self.ActiveSegmentSeedsRadiusArray.InsertNextValue(radius)
        self.ActiveSegmentSeeds.Modified()
        self.ActiveSegmentPoints.InsertNextPoint(point)
        self.ActiveSegmentRadiusArray.InsertNextValue(radius)
        self.ActiveSegmentCellArray.Initialize()
        numberOfPoints = self.ActiveSegmentPoints.GetNumberOfPoints()
        self.ActiveSegmentCellArray.InsertNextCell(numberOfPoints)
        for i in range(numberOfPoints):
            self.ActiveSegmentCellArray.InsertCellPoint(i)
        self.ActiveSegment.Modified()
        self.Render()

    def FirstRender(self):
        self.vmtkRenderer.Render()

    def Render(self):
        self.vmtkRenderer.RenderWindow.Render()

    def UpdateAndRender(self):
        self.vmtkRenderer.Render(interactive=0)

    def RunActiveTube(self,segment):
        activeTubes = vmtkactivetubes.vmtkActiveTubes()
        activeTubes.Centerline = segment
        activeTubes.Image = self.FeatureImage
        activeTubes.NumberOfIterations = self.NumberOfIterations
        activeTubes.PotentialWeight = self.PotentialWeight
        activeTubes.StiffnessWeight = self.StiffnessWeight
        activeTubes.RadiusArrayName = self.RadiusArrayName
        activeTubes.Execute()
        segment.DeepCopy(activeTubes.Centerline)

    def Execute(self):
 
        if not self.Network:
            self.Network = vtk.vtkPolyData()
            networkPoints = vtk.vtkPoints()
            networkLines = vtk.vtkCellArray()
            radiusArray = vtk.vtkDoubleArray()
            radiusArray.SetName(self.RadiusArrayName)
            self.Network.SetPoints(networkPoints)
            self.Network.SetLines(networkLines)
            self.Network.GetPointData().AddArray(radiusArray)
        
        if not self.vmtkRenderer:
            self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
            self.vmtkRenderer.Initialize()
            self.OwnRenderer = 1

        self.vmtkRenderer.ExitAfterTextInputMode = False
        self.vmtkRenderer.RegisterScript(self) 

        if self.Image and (not self.PlaneWidgetX or not self.PlaneWidgetY or not self.PlaneWidgetZ):
            imageViewer = vmtkimageviewer.vmtkImageViewer()
            imageViewer.Image = self.Image
            imageViewer.vmtkRenderer = self.vmtkRenderer
            imageViewer.Display = 0
            imageViewer.Execute()
            self.PlaneWidgetX = imageViewer.PlaneWidgetX
            self.PlaneWidgetY = imageViewer.PlaneWidgetY
            self.PlaneWidgetZ = imageViewer.PlaneWidgetZ

        if self.Image:
            spacing = self.Image.GetSpacing()
            self.CurrentRadius = min(spacing)

        if self.UseActiveTubes and not self.FeatureImage:
            imageFeatures = vmtkimagefeatures.vmtkImageFeatures()
            imageFeatures.Image = self.Image
            imageFeatures.FeatureImageType = 'vtkgradient'
            imageFeatures.Execute()
            self.FeatureImage = imageFeatures.FeatureImage
 
        self.NetworkRadiusArray = self.Network.GetPointData().GetArray(self.RadiusArrayName)

        self.Network.GetPointData().SetActiveScalars(self.RadiusArrayName)

        networkMapper = vtk.vtkPolyDataMapper()
        networkMapper.SetInputData(self.Network)
        networkMapper.SetScalarModeToUseCellData()

        self.NetworkActor = vtk.vtkActor()
        self.NetworkActor.SetMapper(networkMapper)
        self.vmtkRenderer.Renderer.AddActor(self.NetworkActor)

        self.NetworkTube = vtk.vtkTubeFilter()
        self.NetworkTube.SetInputData(self.Network)
        self.NetworkTube.SetVaryRadiusToVaryRadiusByAbsoluteScalar()
        self.NetworkTube.SetNumberOfSides(20)
        networkTubeMapper = vtk.vtkPolyDataMapper()
        networkTubeMapper.SetInputConnection(self.NetworkTube.GetOutputPort())
        networkTubeMapper.ScalarVisibilityOff()
        networkTubeActor = vtk.vtkActor()
        networkTubeActor.SetMapper(networkTubeMapper)
        networkTubeActor.PickableOff()
        networkTubeActor.GetProperty().SetOpacity(0.2)
        self.vmtkRenderer.Renderer.AddActor(networkTubeActor)

        self.Selection = vtk.vtkPolyData()
        self.SelectionPoints = vtk.vtkPoints()
        self.SelectionRadiusArray = vtk.vtkDoubleArray()
        self.SelectionRadiusArray.SetName(self.RadiusArrayName)
        self.Selection.SetPoints(self.SelectionPoints)
        self.Selection.GetPointData().AddArray(self.SelectionRadiusArray)
        self.Selection.GetPointData().SetActiveScalars(self.RadiusArrayName)

        glyphs = vtk.vtkGlyph3D()
        glyphSource = vtk.vtkSphereSource()
        glyphSource.SetRadius(1.0)
        glyphSource.SetThetaResolution(20)
        glyphSource.SetPhiResolution(20)
        glyphs.SetInputData(self.Selection)
        glyphs.SetSourceConnection(glyphSource.GetOutputPort())
        glyphs.SetScaleModeToScaleByScalar()
        glyphs.SetScaleFactor(1.0)

        selectionMapper = vtk.vtkPolyDataMapper()
        selectionMapper.SetInputConnection(glyphs.GetOutputPort())

        self.SelectionActor = vtk.vtkActor()
        self.SelectionActor.SetMapper(selectionMapper)
        self.SelectionActor.GetProperty().SetColor(1.0,0.0,0.0)
        self.SelectionActor.GetProperty().SetOpacity(0.5)
        self.SelectionActor.PickableOff()
        self.vmtkRenderer.Renderer.AddActor(self.SelectionActor)

        self.ActiveSegmentSeeds = vtk.vtkPolyData()
        self.ActiveSegmentSeedsPoints = vtk.vtkPoints()
        self.ActiveSegmentSeedsRadiusArray = vtk.vtkDoubleArray()
        self.ActiveSegmentSeedsRadiusArray.SetName(self.RadiusArrayName)
        self.ActiveSegmentSeeds.SetPoints(self.ActiveSegmentSeedsPoints)
        self.ActiveSegmentSeeds.GetPointData().AddArray(self.ActiveSegmentSeedsRadiusArray)
        self.ActiveSegmentSeeds.GetPointData().SetActiveScalars(self.RadiusArrayName)

        activeSegmentSeedsGlyphs = vtk.vtkGlyph3D()
        activeSegmentSeedsGlyphSource = vtk.vtkSphereSource()
        activeSegmentSeedsGlyphSource.SetRadius(1.0)
        activeSegmentSeedsGlyphSource.SetThetaResolution(20)
        activeSegmentSeedsGlyphSource.SetPhiResolution(20)
        activeSegmentSeedsGlyphs.SetInputData(self.ActiveSegmentSeeds)
        activeSegmentSeedsGlyphs.SetSourceConnection(activeSegmentSeedsGlyphSource.GetOutputPort())
        activeSegmentSeedsGlyphs.SetScaleModeToScaleByScalar()
        activeSegmentSeedsGlyphs.SetScaleFactor(1.0)

        activeSegmentSeedsMapper = vtk.vtkPolyDataMapper()
        activeSegmentSeedsMapper.SetInputConnection(activeSegmentSeedsGlyphs.GetOutputPort())
        activeSegmentSeedsMapper.ScalarVisibilityOff()

        self.ActiveSegmentSeedsActor = vtk.vtkActor()
        self.ActiveSegmentSeedsActor.SetMapper(activeSegmentSeedsMapper)
        self.ActiveSegmentSeedsActor.GetProperty().SetColor(1.0,0.0,0.0)
        self.ActiveSegmentSeedsActor.GetProperty().SetOpacity(0.5)
        self.ActiveSegmentSeedsActor.PickableOff()
        self.vmtkRenderer.Renderer.AddActor(self.ActiveSegmentSeedsActor)

        self.ActiveSegment = vtk.vtkPolyData()
        self.ActiveSegmentPoints = vtk.vtkPoints()
        self.ActiveSegmentCellArray = vtk.vtkCellArray()
        self.ActiveSegmentRadiusArray = vtk.vtkDoubleArray()
        self.ActiveSegmentRadiusArray.SetName(self.RadiusArrayName)
        self.ActiveSegment.SetPoints(self.ActiveSegmentPoints)
        self.ActiveSegment.SetLines(self.ActiveSegmentCellArray)
        self.ActiveSegment.GetPointData().AddArray(self.ActiveSegmentRadiusArray)
        self.ActiveSegment.GetPointData().SetActiveScalars(self.RadiusArrayName)

        activeSegmentMapper = vtk.vtkPolyDataMapper()
        activeSegmentMapper.ScalarVisibilityOff()
        if self.SplineInterpolation and self.Image != None:
            splineFilter = vtk.vtkSplineFilter()
            splineFilter.SetInputData(self.ActiveSegment)
            splineFilter.SetSubdivideToLength()
            splineFilter.SetLength(2.0*min(self.Image.GetSpacing()))
            activeSegmentMapper.SetInputConnection(splineFilter.GetOutputPort())
        else:
            activeSegmentMapper.SetInputData(self.ActiveSegment)

        self.ActiveSegmentActor = vtk.vtkActor()
        self.ActiveSegmentActor.SetMapper(activeSegmentMapper)
        self.ActiveSegmentActor.GetProperty().SetColor(1.0,1.0,1.0)
        self.ActiveSegmentActor.GetProperty().SetLineWidth(3.0)
        self.ActiveSegmentActor.PickableOff()
        self.vmtkRenderer.Renderer.AddActor(self.ActiveSegmentActor)

        activeTube = vtk.vtkTubeFilter()
        activeTube.SetInputConnection(activeSegmentMapper.GetInputPort())
        activeTube.SetVaryRadiusToVaryRadiusByAbsoluteScalar()
        activeTube.SetNumberOfSides(20)
        activeTubeMapper = vtk.vtkPolyDataMapper()
        activeTubeMapper.SetInputConnection(activeTube.GetOutputPort())
        activeTubeMapper.ScalarVisibilityOff()
        activeTubeActor = vtk.vtkActor()
        activeTubeActor.SetMapper(activeTubeMapper)
        activeTubeActor.PickableOff()
        activeTubeActor.GetProperty().SetOpacity(0.6)
        self.vmtkRenderer.Renderer.AddActor(activeTubeActor)

        self.NetworkLabelsArray = vtk.vtkStringArray.SafeDownCast(self.Network.GetCellData().GetAbstractArray(self.LabelsArrayName))
        if not self.NetworkLabelsArray:
            self.NetworkLabelsArray = vtk.vtkStringArray()
            self.NetworkLabelsArray.SetName(self.LabelsArrayName)
            self.NetworkLabelsArray.SetNumberOfValues(self.Network.GetNumberOfCells())
            for i in range(self.Network.GetNumberOfCells()):
                self.NetworkLabelsArray.SetValue(i,'')
            self.Network.GetCellData().AddArray(self.NetworkLabelsArray)
        self.CellCenters = vtk.vtkCellCenters()
        self.CellCenters.SetInputData(self.Network)
        self.CellCenters.VertexCellsOff()
        self.CellCenters.Update()

        labeledMapper = vtk.vtkLabeledDataMapper()
        labeledMapper.SetInputConnection(self.CellCenters.GetOutputPort())
        labeledMapper.SetLabelModeToLabelFieldData()
        labeledMapper.SetFieldDataName(self.LabelsArrayName)
        labeledMapper.GetLabelTextProperty().SetFontFamilyToArial()
        labeledMapper.GetLabelTextProperty().BoldOff()
        labeledMapper.GetLabelTextProperty().ItalicOff()
        labeledMapper.GetLabelTextProperty().ShadowOff()
        
        self.LabelsActor = vtk.vtkActor2D()
        self.LabelsActor.SetMapper(labeledMapper)
        self.LabelsActor.VisibilityOff()
        self.vmtkRenderer.Renderer.AddActor(self.LabelsActor)

        self.CellPicker = vtk.vtkCellPicker()
        self.CellPicker.SetTolerance(1E-2)
        self.CellPicker.InitializePickList()
        self.CellPicker.AddPickList(self.NetworkActor)
        self.CellPicker.PickFromListOn()

        self.vmtkRenderer.AddKeyBinding('a','Add mode.',self.AddCallback)
        self.vmtkRenderer.AddKeyBinding('d','Delete mode.',self.DeleteCallback)
        self.vmtkRenderer.AddKeyBinding('m','Merge mode.',self.MergeCallback)
        self.vmtkRenderer.AddKeyBinding('s','Split mode.',self.SplitCallback)
        self.vmtkRenderer.AddKeyBinding('l','Label mode.',self.LabelCallback)
        self.vmtkRenderer.AddKeyBinding('Tab','Show labels.',self.ShowLabelCallback)
        self.vmtkRenderer.RenderWindowInteractor.AddObserver("KeyReleaseEvent", self.KeyReleaseCallback)
        self.vmtkRenderer.RenderWindowInteractor.AddObserver("LeftButtonPressEvent", self.LeftButtonPressCallback)
        self.vmtkRenderer.RenderWindowInteractor.AddObserver("MouseMoveEvent", self.MouseMoveCallback)

        if self.PlaneWidgetX:
            self.PlaneWidgetX.UseContinuousCursorOn()
            self.PlaneWidgetX.AddObserver("StartInteractionEvent", self.PlaneStartInteractionCallback)
        if self.PlaneWidgetY:
            self.PlaneWidgetY.UseContinuousCursorOn()
            self.PlaneWidgetY.AddObserver("StartInteractionEvent", self.PlaneStartInteractionCallback)
        if self.PlaneWidgetZ:
            self.PlaneWidgetZ.UseContinuousCursorOn()
            self.PlaneWidgetZ.AddObserver("StartInteractionEvent", self.PlaneStartInteractionCallback)

        self.FirstRender()

        self.Surface = self.NetworkTube.GetOutput()

        if self.OwnRenderer:
            self.vmtkRenderer.Deallocate()

      
if __name__=='__main__':

    main = pypes.pypeMain()
    main.Arguments = sys.argv
    main.Execute()