removed viewer package from tree

11 files changed, 0 insertions, 1987 deletions

diff --git a/src/Python/ccpi/viewer/CILViewer.py b/src/Python/ccpi/viewer/CILViewer.py
deleted file mode 100644
index efcf8be..0000000
--- a/src/Python/ccpi/viewer/CILViewer.py
+++ /dev/null
@@ -1,361 +0,0 @@
-# -*- coding: utf-8 -*-
-#   Copyright 2017 Edoardo Pasca
-#
-#   Licensed under the Apache License, Version 2.0 (the "License");
-#   you may not use this file except in compliance with the License.
-#   You may obtain a copy of the License at
-#
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#   Unless required by applicable law or agreed to in writing, software
-#   distributed under the License is distributed on an "AS IS" BASIS,
-#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#   See the License for the specific language governing permissions and
-#   limitations under the License.
-   
-import vtk
-import numpy
-import math
-from vtk.util import numpy_support
-
-SLICE_ORIENTATION_XY = 2 # Z
-SLICE_ORIENTATION_XZ = 1 # Y
-SLICE_ORIENTATION_YZ = 0 # X
-
-
-
-class CILViewer():
-    '''Simple 3D Viewer based on VTK classes'''
-    
-    def __init__(self, dimx=600,dimy=600):
-        '''creates the rendering pipeline'''
-        
-        # create a rendering window and renderer
-        self.ren = vtk.vtkRenderer()
-        self.renWin = vtk.vtkRenderWindow()
-        self.renWin.SetSize(dimx,dimy)
-        self.renWin.AddRenderer(self.ren)
-
-        # img 3D as slice
-        self.img3D = None
-        self.sliceno = 0
-        self.sliceOrientation = SLICE_ORIENTATION_XY
-        self.sliceActor = None
-        self.voi = None
-        self.wl = None
-        self.ia = None
-        self.sliceActorNo = 0
-        # create a renderwindowinteractor
-        self.iren = vtk.vtkRenderWindowInteractor()
-        self.iren.SetRenderWindow(self.renWin)
-
-        self.style = vtk.vtkInteractorStyleTrackballCamera()
-        self.iren.SetInteractorStyle(self.style)
-
-        self.ren.SetBackground(.1, .2, .4)
-
-        self.actors = {}
-        self.iren.RemoveObservers('MouseWheelForwardEvent')
-        self.iren.RemoveObservers('MouseWheelBackwardEvent')
-        
-        self.iren.AddObserver('MouseWheelForwardEvent', self.mouseInteraction, 1.0)
-        self.iren.AddObserver('MouseWheelBackwardEvent', self.mouseInteraction, 1.0)
-
-        self.iren.RemoveObservers('KeyPressEvent')
-        self.iren.AddObserver('KeyPressEvent', self.keyPress, 1.0)
-        
-        
-        self.iren.Initialize()
-
-        
-
-    def getRenderer(self):
-        '''returns the renderer'''
-        return self.ren
-
-    def getRenderWindow(self):
-        '''returns the render window'''
-        return self.renWin
-
-    def getInteractor(self):
-        '''returns the render window interactor'''
-        return self.iren
-
-    def getCamera(self):
-        '''returns the active camera'''
-        return self.ren.GetActiveCamera()
-
-    def createPolyDataActor(self, polydata):
-        '''returns an actor for a given polydata'''
-        mapper = vtk.vtkPolyDataMapper()
-        if vtk.VTK_MAJOR_VERSION <= 5:
-            mapper.SetInput(polydata)
-        else:
-            mapper.SetInputData(polydata)
-   
-        # actor
-        actor = vtk.vtkActor()
-        actor.SetMapper(mapper)
-        #actor.GetProperty().SetOpacity(0.8)
-        return actor
-
-    def setPolyDataActor(self, actor):
-        '''displays the given polydata'''
-        
-        self.ren.AddActor(actor)
-        
-        self.actors[len(self.actors)+1] = [actor, True]
-        self.iren.Initialize()
-        self.renWin.Render()
-
-    def displayPolyData(self, polydata):
-        self.setPolyDataActor(self.createPolyDataActor(polydata))
-        
-    def hideActor(self, actorno):
-        '''Hides an actor identified by its number in the list of actors'''
-        try:
-            if self.actors[actorno][1]:
-                self.ren.RemoveActor(self.actors[actorno][0])
-                self.actors[actorno][1] = False
-        except KeyError as ke:
-            print ("Warning Actor not present")
-        
-    def showActor(self, actorno, actor = None):
-        '''Shows hidden actor identified by its number in the list of actors'''
-        try:
-            if not self.actors[actorno][1]:
-                self.ren.AddActor(self.actors[actorno][0])
-                self.actors[actorno][1] = True
-                return actorno
-        except KeyError as ke:
-            # adds it to the actors if not there already
-            if actor != None:
-                self.ren.AddActor(actor)
-                self.actors[len(self.actors)+1] = [actor, True]
-                return len(self.actors)
-
-    def addActor(self, actor):
-        '''Adds an actor to the render'''
-        return self.showActor(0, actor)
-            
-        
-    def saveRender(self, filename, renWin=None):
-        '''Save the render window to PNG file'''
-        # screenshot code:
-        w2if = vtk.vtkWindowToImageFilter()
-        if renWin == None:
-            renWin = self.renWin
-        w2if.SetInput(renWin)
-        w2if.Update()
-         
-        writer = vtk.vtkPNGWriter()
-        writer.SetFileName("%s.png" % (filename))
-        writer.SetInputConnection(w2if.GetOutputPort())
-        writer.Write()
-
-    
-    def startRenderLoop(self):
-        self.iren.Start()
-
-
-    def setupObservers(self, interactor):
-        interactor.RemoveObservers('LeftButtonPressEvent')
-        interactor.AddObserver('LeftButtonPressEvent', self.mouseInteraction)
-        interactor.Initialize()
-
-        
-    def mouseInteraction(self, interactor, event):
-        if event == 'MouseWheelForwardEvent':
-            maxSlice = self.img3D.GetDimensions()[self.sliceOrientation]
-            if (self.sliceno + 1 < maxSlice):
-                self.hideActor(self.sliceActorNo)
-                self.sliceno = self.sliceno + 1
-                self.displaySliceActor(self.sliceno)
-        else:
-            minSlice = 0
-            if (self.sliceno - 1 > minSlice):
-                self.hideActor(self.sliceActorNo)
-                self.sliceno = self.sliceno - 1
-                self.displaySliceActor(self.sliceno)
-                 
-
-    def keyPress(self, interactor, event):
-        #print ("Pressed key %s" % interactor.GetKeyCode())
-        # Slice Orientation 
-        if interactor.GetKeyCode() == "x":
-            # slice on the other orientation
-            self.sliceOrientation = SLICE_ORIENTATION_YZ
-            self.sliceno = int(self.img3D.GetDimensions()[1] / 2)
-            self.hideActor(self.sliceActorNo)
-            self.displaySliceActor(self.sliceno)
-        elif interactor.GetKeyCode() == "y":
-            # slice on the other orientation
-            self.sliceOrientation = SLICE_ORIENTATION_XZ
-            self.sliceno = int(self.img3D.GetDimensions()[1] / 2)
-            self.hideActor(self.sliceActorNo)
-            self.displaySliceActor(self.sliceno)
-        elif interactor.GetKeyCode() == "z":
-            # slice on the other orientation
-            self.sliceOrientation = SLICE_ORIENTATION_XY
-            self.sliceno = int(self.img3D.GetDimensions()[2] / 2)
-            self.hideActor(self.sliceActorNo)
-            self.displaySliceActor(self.sliceno)
-        if interactor.GetKeyCode() == "X":
-            # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.ren.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.ren.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.ren.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_YZ] = math.sqrt(newposition[SLICE_ORIENTATION_XY] ** 2 + newposition[SLICE_ORIENTATION_XZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,0,-1)
-            self.ren.SetActiveCamera(camera)
-            self.ren.ResetCamera()
-            self.ren.Render()
-            interactor.SetKeyCode("x")
-            self.keyPress(interactor, event)
-        elif interactor.GetKeyCode() == "Y":
-             # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.ren.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.ren.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.ren.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_XZ] = math.sqrt(newposition[SLICE_ORIENTATION_XY] ** 2 + newposition[SLICE_ORIENTATION_YZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,0,-1)
-            self.ren.SetActiveCamera(camera)
-            self.ren.ResetCamera()
-            self.ren.Render()
-            interactor.SetKeyCode("y")
-            self.keyPress(interactor, event)
-        elif interactor.GetKeyCode() == "Z":
-             # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.ren.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.ren.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.ren.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_XY] = math.sqrt(newposition[SLICE_ORIENTATION_YZ] ** 2 + newposition[SLICE_ORIENTATION_XZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,0,-1)
-            self.ren.SetActiveCamera(camera)
-            self.ren.ResetCamera()
-            self.ren.Render()
-            interactor.SetKeyCode("z")
-            self.keyPress(interactor, event)
-        else :
-            print ("Unhandled event %s" % interactor.GetKeyCode())
-
-
-        
-    def setInput3DData(self, imageData):
-        self.img3D = imageData
-
-    def setInputAsNumpy(self, numpyarray):
-        if (len(numpy.shape(numpyarray)) == 3):
-            doubleImg = vtk.vtkImageData()
-            shape = numpy.shape(numpyarray)
-            doubleImg.SetDimensions(shape[0], shape[1], shape[2])
-            doubleImg.SetOrigin(0,0,0)
-            doubleImg.SetSpacing(1,1,1)
-            doubleImg.SetExtent(0, shape[0]-1, 0, shape[1]-1, 0, shape[2]-1)
-            #self.img3D.SetScalarType(vtk.VTK_UNSIGNED_SHORT, vtk.vtkInformation())
-            doubleImg.AllocateScalars(vtk.VTK_DOUBLE,1)
-            
-            for i in range(shape[0]):
-                for j in range(shape[1]):
-                    for k in range(shape[2]):
-                        doubleImg.SetScalarComponentFromDouble(
-                            i,j,k,0, numpyarray[i][j][k])
-        #self.setInput3DData( numpy_support.numpy_to_vtk(numpyarray) )
-            # rescale to appropriate VTK_UNSIGNED_SHORT
-            stats = vtk.vtkImageAccumulate()
-            stats.SetInputData(doubleImg)
-            stats.Update()
-            iMin = stats.GetMin()[0]
-            iMax = stats.GetMax()[0]
-            scale = vtk.VTK_UNSIGNED_SHORT_MAX / (iMax - iMin)
-
-            shiftScaler = vtk.vtkImageShiftScale ()
-            shiftScaler.SetInputData(doubleImg)
-            shiftScaler.SetScale(scale)
-            shiftScaler.SetShift(iMin)
-            shiftScaler.SetOutputScalarType(vtk.VTK_UNSIGNED_SHORT)
-            shiftScaler.Update()
-            self.img3D = shiftScaler.GetOutput()
-            
-    def displaySliceActor(self, sliceno = 0):
-        self.sliceno = sliceno
-        first = False
-        
-        self.sliceActor , self.voi, self.wl , self.ia = \
-                        self.getSliceActor(self.img3D,
-                                                 sliceno,
-                                                 self.sliceActor,
-                                                 self.voi,
-                                                 self.wl,
-                                                 self.ia)
-        no = self.showActor(self.sliceActorNo, self.sliceActor)
-        self.sliceActorNo = no
-        
-        self.iren.Initialize()
-        self.renWin.Render()
-        
-        return self.sliceActorNo
-
-                      
-    def getSliceActor(self,
-                      imageData ,
-                      sliceno=0,
-                      imageActor=None ,
-                      voi=None,
-                      windowLevel=None,
-                      imageAccumulate=None):
-        '''Slices a 3D volume and then creates an actor to be rendered'''
-        if (voi==None):
-            voi = vtk.vtkExtractVOI()
-            #voi = vtk.vtkImageClip()
-        voi.SetInputData(imageData)
-        #select one slice in Z
-        extent = [ i for i in self.img3D.GetExtent()]
-        extent[self.sliceOrientation * 2] = sliceno
-        extent[self.sliceOrientation * 2 + 1] = sliceno 
-        voi.SetVOI(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        
-        voi.Update()
-        # set window/level for all slices
-        if imageAccumulate == None:
-            imageAccumulate = vtk.vtkImageAccumulate()
-        
-        if (windowLevel == None):
-            windowLevel = vtk.vtkImageMapToWindowLevelColors()
-            imageAccumulate.SetInputData(imageData)
-            imageAccumulate.Update()
-            cmax = imageAccumulate.GetMax()[0]
-            cmin = imageAccumulate.GetMin()[0]
-            windowLevel.SetLevel((cmax+cmin)/2)
-            windowLevel.SetWindow(cmax-cmin)
-
-        windowLevel.SetInputData(voi.GetOutput())
-        windowLevel.Update()
-            
-        if imageActor == None:
-            imageActor = vtk.vtkImageActor()
-        imageActor.SetInputData(windowLevel.GetOutput())
-        imageActor.SetDisplayExtent(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        imageActor.Update()
-        return (imageActor , voi, windowLevel, imageAccumulate)
-
-
-    # Set interpolation on
-    def setInterpolateOn(self):
-        self.sliceActor.SetInterpolate(True)
-        self.renWin.Render()
-
-    # Set interpolation off
-    def setInterpolateOff(self):
-        self.sliceActor.SetInterpolate(False)
-        self.renWin.Render()
\ No newline at end of file
diff --git a/src/Python/ccpi/viewer/CILViewer2D.py b/src/Python/ccpi/viewer/CILViewer2D.py
deleted file mode 100644
index c1629af..0000000
--- a/src/Python/ccpi/viewer/CILViewer2D.py
+++ /dev/null
@@ -1,1126 +0,0 @@
-# -*- coding: utf-8 -*-
-#   Copyright 2017 Edoardo Pasca
-#
-#   Licensed under the Apache License, Version 2.0 (the "License");
-#   you may not use this file except in compliance with the License.
-#   You may obtain a copy of the License at
-#
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-#   Unless required by applicable law or agreed to in writing, software
-#   distributed under the License is distributed on an "AS IS" BASIS,
-#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#   See the License for the specific language governing permissions and
-#   limitations under the License.
-   
-import vtk
-import numpy
-from vtk.util import numpy_support , vtkImageImportFromArray
-from enum import Enum
-
-SLICE_ORIENTATION_XY = 2 # Z
-SLICE_ORIENTATION_XZ = 1 # Y
-SLICE_ORIENTATION_YZ = 0 # X
-
-CONTROL_KEY = 8
-SHIFT_KEY = 4
-ALT_KEY = -128
-
-
-# Converter class
-class Converter():
-    
-    # Utility functions to transform numpy arrays to vtkImageData and viceversa
-    @staticmethod
-    def numpy2vtkImporter(nparray, spacing=(1.,1.,1.), origin=(0,0,0)):
-        '''Creates a vtkImageImportFromArray object and returns it.
-        
-        It handles the different axis order from numpy to VTK'''
-        importer = vtkImageImportFromArray.vtkImageImportFromArray()
-        importer.SetArray(numpy.transpose(nparray).copy())
-        importer.SetDataSpacing(spacing)
-        importer.SetDataOrigin(origin)
-        return importer
-    
-    @staticmethod
-    def numpy2vtk(nparray, spacing=(1.,1.,1.), origin=(0,0,0)):
-        '''Converts a 3D numpy array to a vtkImageData'''
-        importer = Converter.numpy2vtkImporter(nparray, spacing, origin)
-        importer.Update()
-        return importer.GetOutput()
-    
-    @staticmethod
-    def vtk2numpy(imgdata):
-        '''Converts the VTK data to 3D numpy array'''
-        img_data = numpy_support.vtk_to_numpy(
-                imgdata.GetPointData().GetScalars())
-    
-        dims = imgdata.GetDimensions()
-        dims = (dims[2],dims[1],dims[0])
-        data3d = numpy.reshape(img_data, dims)
-        
-        return numpy.transpose(data3d).copy() 
-
-    @staticmethod
-    def tiffStack2numpy(filename, indices, 
-                        extent = None , sampleRate = None ,\
-                        flatField = None, darkField = None):
-        '''Converts a stack of TIFF files to numpy array.
-        
-        filename must contain the whole path. The filename is supposed to be named and
-        have a suffix with the ordinal file number, i.e. /path/to/projection_%03d.tif
-        
-        indices are the suffix, generally an increasing number
-        
-        Optionally extracts only a selection of the 2D images and (optionally)
-        normalizes.
-        '''
-        
-        stack = vtk.vtkImageData()
-        reader = vtk.vtkTIFFReader()
-        voi = vtk.vtkExtractVOI()
-        
-        #directory = "C:\\Users\\ofn77899\\Documents\\CCPi\\IMAT\\20170419_crabtomo\\crabtomo\\"
-        
-        stack_image = numpy.asarray([])
-        nreduced = len(indices)
-        
-        for num in range(len(indices)):
-            fn = filename % indices[num]
-            print ("resampling %s" % ( fn ) )
-            reader.SetFileName(fn)
-            reader.Update()     
-            print (reader.GetOutput().GetScalarTypeAsString())
-            if num == 0:
-                if (extent == None):
-                    sliced = reader.GetOutput().GetExtent()
-                    stack.SetExtent(sliced[0],sliced[1], sliced[2],sliced[3], 0, nreduced-1)
-                else:
-                    sliced = extent
-                    voi.SetVOI(extent)
-                   
-                    if sampleRate is not None:
-                        voi.SetSampleRate(sampleRate)
-                        ext = numpy.asarray([(sliced[2*i+1] - sliced[2*i])/sampleRate[i] for i in range(3)], dtype=int)
-                        print ("ext {0}".format(ext))
-                        stack.SetExtent(0, ext[0] , 0, ext[1], 0, nreduced-1)
-                    else:
-                         stack.SetExtent(0, sliced[1] - sliced[0] , 0, sliced[3]-sliced[2], 0, nreduced-1)
-                if (flatField != None and darkField != None):
-                    stack.AllocateScalars(vtk.VTK_FLOAT, 1)
-                else:
-                    stack.AllocateScalars(reader.GetOutput().GetScalarType(), 1)
-                print ("Image Size: %d" % ((sliced[1]+1)*(sliced[3]+1) ))
-                stack_image = Converter.vtk2numpy(stack)
-                print ("Stack shape %s" % str(numpy.shape(stack_image)))
-            
-            if extent!=None:
-                voi.SetInputData(reader.GetOutput())
-                voi.Update()
-                img = voi.GetOutput()
-            else:
-                img = reader.GetOutput()
-                
-            theSlice = Converter.vtk2numpy(img).T[0]
-            if darkField != None and flatField != None:
-                print("Try to normalize")
-                #if numpy.shape(darkField) == numpy.shape(flatField) and numpy.shape(flatField) == numpy.shape(theSlice):
-                theSlice = Converter.normalize(theSlice, darkField, flatField, 0.01)
-                print (theSlice.dtype)
-            
-                    
-            print ("Slice shape %s" % str(numpy.shape(theSlice)))
-            stack_image.T[num] = theSlice.copy()
-        
-        return stack_image
-    
-    @staticmethod
-    def normalize(projection, dark, flat, def_val=0):
-        a = (projection - dark)
-        b = (flat-dark)
-        with numpy.errstate(divide='ignore', invalid='ignore'):
-            c = numpy.true_divide( a, b )
-            c[ ~ numpy.isfinite( c )] = def_val  # set to not zero if 0/0 
-        return c
-
-
-
-## Utility functions to transform numpy arrays to vtkImageData and viceversa
-#def numpy2vtkImporter(nparray, spacing=(1.,1.,1.), origin=(0,0,0)):
-#    return Converter.numpy2vtkImporter(nparray, spacing, origin)
-#
-#def numpy2vtk(nparray, spacing=(1.,1.,1.), origin=(0,0,0)):
-#    return Converter.numpy2vtk(nparray, spacing, origin)
-#
-#def vtk2numpy(imgdata):
-#    return Converter.vtk2numpy(imgdata)
-#
-#def tiffStack2numpy(filename, indices):
-#    return Converter.tiffStack2numpy(filename, indices)
-
-class ViewerEvent(Enum):
-    # left button
-    PICK_EVENT = 0 
-    # alt  + right button + move
-    WINDOW_LEVEL_EVENT = 1
-    # shift + right button
-    ZOOM_EVENT = 2
-    # control + right button
-    PAN_EVENT = 3
-    # control + left button
-    CREATE_ROI_EVENT = 4
-    # alt + left button
-    DELETE_ROI_EVENT = 5
-    # release button
-    NO_EVENT = -1
-
-
-#class CILInteractorStyle(vtk.vtkInteractorStyleTrackballCamera):
-class CILInteractorStyle(vtk.vtkInteractorStyleImage):
-    
-    def __init__(self, callback):
-        vtk.vtkInteractorStyleImage.__init__(self)
-        self.callback = callback
-        self._viewer = callback
-        priority = 1.0
-        
-#        self.AddObserver("MouseWheelForwardEvent" , callback.OnMouseWheelForward , priority)
-#        self.AddObserver("MouseWheelBackwardEvent" , callback.OnMouseWheelBackward, priority)
-#        self.AddObserver('KeyPressEvent', callback.OnKeyPress, priority)
-#        self.AddObserver('LeftButtonPressEvent', callback.OnLeftButtonPressEvent, priority)
-#        self.AddObserver('RightButtonPressEvent', callback.OnRightButtonPressEvent, priority)
-#        self.AddObserver('LeftButtonReleaseEvent', callback.OnLeftButtonReleaseEvent, priority)
-#        self.AddObserver('RightButtonReleaseEvent', callback.OnRightButtonReleaseEvent, priority)
-#        self.AddObserver('MouseMoveEvent', callback.OnMouseMoveEvent, priority)
-        
-        self.AddObserver("MouseWheelForwardEvent" , self.OnMouseWheelForward , priority)
-        self.AddObserver("MouseWheelBackwardEvent" , self.OnMouseWheelBackward, priority)
-        self.AddObserver('KeyPressEvent', self.OnKeyPress, priority)
-        self.AddObserver('LeftButtonPressEvent', self.OnLeftButtonPressEvent, priority)
-        self.AddObserver('RightButtonPressEvent', self.OnRightButtonPressEvent, priority)
-        self.AddObserver('LeftButtonReleaseEvent', self.OnLeftButtonReleaseEvent, priority)
-        self.AddObserver('RightButtonReleaseEvent', self.OnRightButtonReleaseEvent, priority)
-        self.AddObserver('MouseMoveEvent', self.OnMouseMoveEvent, priority)
-        
-        self.InitialEventPosition = (0,0)
-        
-        
-    def SetInitialEventPosition(self, xy):
-        self.InitialEventPosition = xy
-        
-    def GetInitialEventPosition(self):
-        return self.InitialEventPosition
-    
-    def GetKeyCode(self):
-        return self.GetInteractor().GetKeyCode()
-    
-    def SetKeyCode(self, keycode):
-        self.GetInteractor().SetKeyCode(keycode)
-        
-    def GetControlKey(self):
-        return self.GetInteractor().GetControlKey() == CONTROL_KEY
-    
-    def GetShiftKey(self):
-        return self.GetInteractor().GetShiftKey() == SHIFT_KEY
-    
-    def GetAltKey(self):
-        return self.GetInteractor().GetAltKey() == ALT_KEY
-    
-    def GetEventPosition(self):
-        return self.GetInteractor().GetEventPosition()
-    
-    def GetEventPositionInWorldCoordinates(self):
-        pass
-    
-    def GetDeltaEventPosition(self):
-        x,y = self.GetInteractor().GetEventPosition()
-        return (x - self.InitialEventPosition[0] , y - self.InitialEventPosition[1])
-    
-    def Dolly(self, factor):
-        self.callback.camera.Dolly(factor)
-        self.callback.ren.ResetCameraClippingRange()
-        
-    def GetDimensions(self):
-        return self._viewer.img3D.GetDimensions()
-    
-    def GetInputData(self):
-        return self._viewer.img3D
-    
-    def GetSliceOrientation(self):
-        return self._viewer.sliceOrientation
-    
-    def SetSliceOrientation(self, orientation):
-        self._viewer.sliceOrientation = orientation
-
-    def GetActiveSlice(self):
-        return self._viewer.sliceno
-    
-    def SetActiveSlice(self, sliceno):
-        self._viewer.sliceno = sliceno
-    
-    def UpdatePipeline(self, reset = False):
-        self._viewer.updatePipeline(reset)
-        
-    def GetActiveCamera(self):
-        return self._viewer.ren.GetActiveCamera()
-    
-    def SetActiveCamera(self, camera):
-        self._viewer.ren.SetActiveCamera(camera)
-    
-    def ResetCamera(self):
-        self._viewer.ren.ResetCamera()
-    
-    def Render(self):
-        self._viewer.renWin.Render()
-        
-    def UpdateSliceActor(self):
-        self._viewer.sliceActor.Update()
-    
-    def AdjustCamera(self):
-        self._viewer.AdjustCamera()
-        
-    def SaveRender(self, filename):
-        self._viewer.SaveRender(filename)
-        
-    def GetRenderWindow(self):
-        return self._viewer.renWin
-        
-    def GetRenderer(self):
-        return self._viewer.ren
-    
-    def GetROIWidget(self):
-        return self._viewer.ROIWidget
-    
-    def SetViewerEvent(self, event):
-        self._viewer.event = event
-        
-    def GetViewerEvent(self):
-        return self._viewer.event
-    
-    def SetInitialCameraPosition(self, position):
-        self._viewer.InitialCameraPosition = position
-        
-    def GetInitialCameraPosition(self):
-        return self._viewer.InitialCameraPosition
-
-    def SetInitialLevel(self, level):
-        self._viewer.InitialLevel = level
-    
-    def GetInitialLevel(self):
-        return self._viewer.InitialLevel
-    
-    def SetInitialWindow(self, window):
-        self._viewer.InitialWindow = window
-    
-    def GetInitialWindow(self):
-        return self._viewer.InitialWindow
-    
-    def GetWindowLevel(self):
-        return self._viewer.wl
-    
-    def SetROI(self, roi):
-        self._viewer.ROI = roi
-        
-    def GetROI(self):
-        return self._viewer.ROI
-    
-    def UpdateCornerAnnotation(self, text, corner):
-        self._viewer.updateCornerAnnotation(text, corner)
-
-    def GetPicker(self):
-        return self._viewer.picker
-    
-    def GetCornerAnnotation(self):
-        return self._viewer.cornerAnnotation
-    
-    def UpdateROIHistogram(self):
-        self._viewer.updateROIHistogram()
-        
-        
-    ############### Handle events
-    def OnMouseWheelForward(self, interactor, event):
-        maxSlice = self.GetDimensions()[self.GetSliceOrientation()]
-        shift = interactor.GetShiftKey()
-        advance = 1
-        if shift:
-            advance = 10
-            
-        if (self.GetActiveSlice() + advance < maxSlice):
-            self.SetActiveSlice(self.GetActiveSlice() + advance)
-            
-            self.UpdatePipeline()
-        else:
-            print ("maxSlice %d request %d" % (maxSlice, self.GetActiveSlice() + 1 ))
-    
-    def OnMouseWheelBackward(self, interactor, event):
-        minSlice = 0
-        shift = interactor.GetShiftKey()
-        advance = 1
-        if shift:
-            advance = 10
-        if (self.GetActiveSlice() - advance >= minSlice):
-            self.SetActiveSlice( self.GetActiveSlice() - advance)
-            self.UpdatePipeline()
-        else:
-            print ("minSlice %d request %d" % (minSlice, self.GetActiveSlice() + 1 ))
-        
-    def OnKeyPress(self, interactor, event):
-        #print ("Pressed key %s" % interactor.GetKeyCode())
-        # Slice Orientation 
-        if interactor.GetKeyCode() == "X":
-            # slice on the other orientation
-            self.SetSliceOrientation ( SLICE_ORIENTATION_YZ )
-            self.SetActiveSlice( int(self.GetDimensions()[1] / 2) )
-            self.UpdatePipeline(True)
-        elif interactor.GetKeyCode() == "Y":
-            # slice on the other orientation
-            self.SetSliceOrientation (  SLICE_ORIENTATION_XZ )
-            self.SetActiveSlice ( int(self.GetInputData().GetDimensions()[1] / 2) )
-            self.UpdatePipeline(True)
-        elif interactor.GetKeyCode() == "Z":
-            # slice on the other orientation
-            self.SetSliceOrientation (  SLICE_ORIENTATION_XY )
-            self.SetActiveSlice ( int(self.GetInputData().GetDimensions()[2] / 2) )
-            self.UpdatePipeline(True)
-        if interactor.GetKeyCode() == "x":
-            # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_YZ] = numpy.sqrt(newposition[SLICE_ORIENTATION_XY] ** 2 + newposition[SLICE_ORIENTATION_XZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,0,-1)
-            self.SetActiveCamera(camera)
-            self.Render()
-            interactor.SetKeyCode("X")
-            self.OnKeyPress(interactor, event)
-        elif interactor.GetKeyCode() == "y":
-             # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_XZ] = numpy.sqrt(newposition[SLICE_ORIENTATION_XY] ** 2 + newposition[SLICE_ORIENTATION_YZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,0,-1)
-            self.SetActiveCamera(camera)
-            self.Render()
-            interactor.SetKeyCode("Y")
-            self.OnKeyPress(interactor, event)
-        elif interactor.GetKeyCode() == "z":
-             # Change the camera view point
-            camera = vtk.vtkCamera()
-            camera.SetFocalPoint(self.GetActiveCamera().GetFocalPoint())
-            camera.SetViewUp(self.GetActiveCamera().GetViewUp())
-            newposition = [i for i in self.GetActiveCamera().GetFocalPoint()]
-            newposition[SLICE_ORIENTATION_XY] = numpy.sqrt(newposition[SLICE_ORIENTATION_YZ] ** 2 + newposition[SLICE_ORIENTATION_XZ] ** 2) 
-            camera.SetPosition(newposition)
-            camera.SetViewUp(0,1,0)
-            self.SetActiveCamera(camera)
-            self.ResetCamera()
-            self.Render()
-            interactor.SetKeyCode("Z")
-            self.OnKeyPress(interactor, event)
-        elif interactor.GetKeyCode() == "a":
-            # reset color/window
-            cmax = self._viewer.ia.GetMax()[0]
-            cmin = self._viewer.ia.GetMin()[0]
-            
-            self.SetInitialLevel( (cmax+cmin)/2 )
-            self.SetInitialWindow( cmax-cmin )
-            
-            self.GetWindowLevel().SetLevel(self.GetInitialLevel())
-            self.GetWindowLevel().SetWindow(self.GetInitialWindow())
-            
-            self.GetWindowLevel().Update()
-                
-            self.UpdateSliceActor()
-            self.AdjustCamera()
-            self.Render()
-            
-        elif interactor.GetKeyCode() == "s":
-            filename = "current_render"
-            self.SaveRender(filename)
-        elif interactor.GetKeyCode() == "q":
-            print ("Terminating by pressing q %s" % (interactor.GetKeyCode(), ))
-            interactor.SetKeyCode("e")
-            self.OnKeyPress(interactor, event)
-        else :
-            #print ("Unhandled event %s" % (interactor.GetKeyCode(), )))
-            pass 
-    
-    def OnLeftButtonPressEvent(self, interactor, event):
-        alt = interactor.GetAltKey()
-        shift = interactor.GetShiftKey()
-        ctrl = interactor.GetControlKey()
-#        print ("alt pressed " + (lambda x : "Yes" if x else "No")(alt))
-#        print ("shift pressed " + (lambda x : "Yes" if x else "No")(shift))
-#        print ("ctrl pressed " + (lambda x : "Yes" if x else "No")(ctrl))
-        
-        interactor.SetInitialEventPosition(interactor.GetEventPosition())
-        
-        if ctrl and not (alt and shift): 
-            self.SetViewerEvent( ViewerEvent.CREATE_ROI_EVENT )
-            wsize = self.GetRenderWindow().GetSize()
-            position = interactor.GetEventPosition()
-            self.GetROIWidget().GetBorderRepresentation().SetPosition((position[0]/wsize[0] - 0.05) , (position[1]/wsize[1] - 0.05))
-            self.GetROIWidget().GetBorderRepresentation().SetPosition2( (0.1) , (0.1))
-            
-            self.GetROIWidget().On()
-            self.SetDisplayHistogram(True)
-            self.Render()
-            print ("Event %s is CREATE_ROI_EVENT" % (event))
-        elif alt and not (shift and ctrl):
-            self.SetViewerEvent( ViewerEvent.DELETE_ROI_EVENT )
-            self.GetROIWidget().Off()
-            self._viewer.updateCornerAnnotation("", 1, False)
-            self.SetDisplayHistogram(False)
-            self.Render()
-            print ("Event %s is DELETE_ROI_EVENT" % (event))
-        elif not (ctrl and alt and shift):
-            self.SetViewerEvent ( ViewerEvent.PICK_EVENT )
-            self.HandlePickEvent(interactor, event)
-            print ("Event %s is PICK_EVENT" % (event))
-        
-          
-    def SetDisplayHistogram(self, display):
-        if display:
-            if (self._viewer.displayHistogram == 0):
-                self.GetRenderer().AddActor(self._viewer.histogramPlotActor)
-                self.firstHistogram = 1
-                self.Render()
-                
-            self._viewer.histogramPlotActor.VisibilityOn()
-            self._viewer.displayHistogram = True
-        else:
-            self._viewer.histogramPlotActor.VisibilityOff()
-            self._viewer.displayHistogram = False
-            
-    
-    def OnLeftButtonReleaseEvent(self, interactor, event):
-        if self.GetViewerEvent() == ViewerEvent.CREATE_ROI_EVENT:
-            #bc = self.ROIWidget.GetBorderRepresentation().GetPositionCoordinate()
-            #print (bc.GetValue())
-            self.OnROIModifiedEvent(interactor, event)
-            
-        elif self.GetViewerEvent() == ViewerEvent.PICK_EVENT:
-            self.HandlePickEvent(interactor, event)
-         
-        self.SetViewerEvent( ViewerEvent.NO_EVENT )
-
-    def OnRightButtonPressEvent(self, interactor, event):
-        alt = interactor.GetAltKey()
-        shift = interactor.GetShiftKey()
-        ctrl = interactor.GetControlKey()
-#        print ("alt pressed " + (lambda x : "Yes" if x else "No")(alt))
-#        print ("shift pressed " + (lambda x : "Yes" if x else "No")(shift))
-#        print ("ctrl pressed " + (lambda x : "Yes" if x else "No")(ctrl))
-        
-        interactor.SetInitialEventPosition(interactor.GetEventPosition())
-        
-        
-        if alt and not (ctrl and shift):
-            self.SetViewerEvent( ViewerEvent.WINDOW_LEVEL_EVENT )
-            print ("Event %s is WINDOW_LEVEL_EVENT" % (event))
-            self.HandleWindowLevel(interactor, event)
-        elif shift and not (ctrl and alt):
-            self.SetViewerEvent( ViewerEvent.ZOOM_EVENT )
-            self.SetInitialCameraPosition( self.GetActiveCamera().GetPosition())
-            print ("Event %s is ZOOM_EVENT" % (event))
-        elif ctrl and not (shift and alt):
-            self.SetViewerEvent (ViewerEvent.PAN_EVENT )
-            self.SetInitialCameraPosition ( self.GetActiveCamera().GetPosition() )
-            print ("Event %s is PAN_EVENT" % (event))
-        
-    def OnRightButtonReleaseEvent(self, interactor, event):
-        print (event)
-        if self.GetViewerEvent() == ViewerEvent.WINDOW_LEVEL_EVENT:
-            self.SetInitialLevel( self.GetWindowLevel().GetLevel() )
-            self.SetInitialWindow ( self.GetWindowLevel().GetWindow() )
-        elif self.GetViewerEvent() == ViewerEvent.ZOOM_EVENT or \
-             self.GetViewerEvent() == ViewerEvent.PAN_EVENT:
-            self.SetInitialCameraPosition( () )
-			
-        self.SetViewerEvent( ViewerEvent.NO_EVENT )
-        
-    
-    def OnROIModifiedEvent(self, interactor, event):
-        
-        #print ("ROI EVENT " + event)
-        p1 = self.GetROIWidget().GetBorderRepresentation().GetPositionCoordinate()
-        p2 = self.GetROIWidget().GetBorderRepresentation().GetPosition2Coordinate()
-        wsize = self.GetRenderWindow().GetSize()
-        
-        #print (p1.GetValue())
-        #print (p2.GetValue())
-        pp1 = [p1.GetValue()[0] * wsize[0] , p1.GetValue()[1] * wsize[1] , 0.0]
-        pp2 = [p2.GetValue()[0] * wsize[0] + pp1[0] , p2.GetValue()[1] * wsize[1] + pp1[1] , 0.0]
-        vox1 = self.viewport2imageCoordinate(pp1)
-        vox2 = self.viewport2imageCoordinate(pp2)
-        
-        self.SetROI( (vox1 , vox2) )
-        roi = self.GetROI()
-        print ("Pixel1 %d,%d,%d Value %f" % vox1 )
-        print ("Pixel2 %d,%d,%d Value %f" % vox2 )
-        if self.GetSliceOrientation() == SLICE_ORIENTATION_XY: 
-            print ("slice orientation : XY")
-            x = abs(roi[1][0] - roi[0][0])
-            y = abs(roi[1][1] - roi[0][1])
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_XZ:
-            print ("slice orientation : XY")
-            x = abs(roi[1][0] - roi[0][0])
-            y = abs(roi[1][2] - roi[0][2])
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_YZ:
-            print ("slice orientation : XY")
-            x = abs(roi[1][1] - roi[0][1])
-            y = abs(roi[1][2] - roi[0][2])
-        
-        text = "ROI: %d x %d, %.2f kp" % (x,y,float(x*y)/1024.)
-        print (text)
-        self.UpdateCornerAnnotation(text, 1)
-        self.UpdateROIHistogram()
-        self.SetViewerEvent( ViewerEvent.NO_EVENT )
-        
-    def viewport2imageCoordinate(self, viewerposition):
-        #Determine point index
-        
-        self.GetPicker().Pick(viewerposition[0], viewerposition[1], 0.0, self.GetRenderer())
-        pickPosition = list(self.GetPicker().GetPickPosition())
-        pickPosition[self.GetSliceOrientation()] = \
-            self.GetInputData().GetSpacing()[self.GetSliceOrientation()] * self.GetActiveSlice() + \
-            self.GetInputData().GetOrigin()[self.GetSliceOrientation()]
-        print ("Pick Position " + str (pickPosition))
-        
-        if (pickPosition != [0,0,0]):
-            dims = self.GetInputData().GetDimensions()
-            print (dims)
-            spac = self.GetInputData().GetSpacing()
-            orig = self.GetInputData().GetOrigin()
-            imagePosition = [int(pickPosition[i] / spac[i] + orig[i]) for i in range(3) ]
-            
-            pixelValue = self.GetInputData().GetScalarComponentAsDouble(imagePosition[0], imagePosition[1], imagePosition[2], 0)
-            return (imagePosition[0], imagePosition[1], imagePosition[2] , pixelValue)
-        else:
-            return (0,0,0,0)
-
-        
-    
-    
-    def OnMouseMoveEvent(self, interactor, event):        
-        if self.GetViewerEvent() == ViewerEvent.WINDOW_LEVEL_EVENT:
-            print ("Event %s is WINDOW_LEVEL_EVENT" % (event))
-            self.HandleWindowLevel(interactor, event)    
-        elif self.GetViewerEvent() == ViewerEvent.PICK_EVENT:
-            self.HandlePickEvent(interactor, event)
-        elif self.GetViewerEvent() == ViewerEvent.ZOOM_EVENT:
-            self.HandleZoomEvent(interactor, event)
-        elif self.GetViewerEvent() == ViewerEvent.PAN_EVENT:
-            self.HandlePanEvent(interactor, event)
-            
-            
-    def HandleZoomEvent(self, interactor, event):
-        dx,dy = interactor.GetDeltaEventPosition()   
-        size = self.GetRenderWindow().GetSize()
-        dy = - 4 * dy / size[1]
-        
-        print ("distance: " + str(self.GetActiveCamera().GetDistance()))
-        
-        print ("\ndy: %f\ncamera dolly %f\n" % (dy, 1 + dy))
-        
-        camera = vtk.vtkCamera()
-        camera.SetFocalPoint(self.GetActiveCamera().GetFocalPoint())
-        #print ("current position " + str(self.InitialCameraPosition))
-        camera.SetViewUp(self.GetActiveCamera().GetViewUp())
-        camera.SetPosition(self.GetInitialCameraPosition())
-        newposition = [i for i in self.GetInitialCameraPosition()]
-        if self.GetSliceOrientation() == SLICE_ORIENTATION_XY: 
-            dist = newposition[SLICE_ORIENTATION_XY] * ( 1 + dy ) 
-            newposition[SLICE_ORIENTATION_XY] *= ( 1 + dy )
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_XZ:
-            newposition[SLICE_ORIENTATION_XZ] *= ( 1 + dy )
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_YZ:
-            newposition[SLICE_ORIENTATION_YZ] *= ( 1 + dy )
-        #print ("new position " + str(newposition))
-        camera.SetPosition(newposition)
-        self.SetActiveCamera(camera)
-        
-        self.Render()
-        	
-        print ("distance after: " + str(self.GetActiveCamera().GetDistance()))
-        
-    def HandlePanEvent(self, interactor, event):
-        x,y = interactor.GetEventPosition()
-        x0,y0 = interactor.GetInitialEventPosition()
-        
-        ic = self.viewport2imageCoordinate((x,y))
-        ic0 = self.viewport2imageCoordinate((x0,y0))
-        
-        dx = 4 *( ic[0] - ic0[0])
-        dy = 4* (ic[1] - ic0[1])
-        
-        camera = vtk.vtkCamera()
-        #print ("current position " + str(self.InitialCameraPosition))
-        camera.SetViewUp(self.GetActiveCamera().GetViewUp())
-        camera.SetPosition(self.GetInitialCameraPosition())
-        newposition = [i for i in self.GetInitialCameraPosition()]
-        newfocalpoint = [i for i in self.GetActiveCamera().GetFocalPoint()]
-        if self.GetSliceOrientation() == SLICE_ORIENTATION_XY: 
-            newposition[0] -= dx
-            newposition[1] -= dy
-            newfocalpoint[0] = newposition[0]
-            newfocalpoint[1] = newposition[1]
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_XZ:
-            newposition[0] -= dx
-            newposition[2] -= dy
-            newfocalpoint[0] = newposition[0]
-            newfocalpoint[2] = newposition[2]
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_YZ:
-            newposition[1] -= dx
-            newposition[2] -= dy
-            newfocalpoint[2] = newposition[2]
-            newfocalpoint[1] = newposition[1]
-        #print ("new position " + str(newposition))
-        camera.SetFocalPoint(newfocalpoint)
-        camera.SetPosition(newposition)
-        self.SetActiveCamera(camera)
-        
-        self.Render()
-        
-    def HandleWindowLevel(self, interactor, event):
-        dx,dy = interactor.GetDeltaEventPosition()
-        print ("Event delta %d %d" % (dx,dy))
-        size = self.GetRenderWindow().GetSize()
-        
-        dx = 4 * dx / size[0]
-        dy = 4 * dy / size[1]
-        window = self.GetInitialWindow()
-        level = self.GetInitialLevel()
-        
-        if abs(window) > 0.01:
-            dx = dx * window
-        else:
-            dx = dx * (lambda x: -0.01 if x <0 else 0.01)(window);
-			
-        if abs(level) > 0.01:
-            dy = dy * level
-        else:
-            dy = dy * (lambda x: -0.01 if x <0 else 0.01)(level)
-			
-
-        # Abs so that direction does not flip
-
-        if window < 0.0:
-            dx = -1*dx
-        if level < 0.0:
-            dy = -1*dy
-
-		 # Compute new window level
-
-        newWindow = dx + window
-        newLevel = level - dy
-
-        # Stay away from zero and really
-
-        if abs(newWindow) < 0.01:
-            newWindow = 0.01 * (lambda x: -1 if x <0 else 1)(newWindow)
-
-        if abs(newLevel) < 0.01:
-            newLevel = 0.01 * (lambda x: -1 if x <0 else 1)(newLevel)
-
-        self.GetWindowLevel().SetWindow(newWindow)
-        self.GetWindowLevel().SetLevel(newLevel)
-        
-        self.GetWindowLevel().Update()
-        self.UpdateSliceActor()
-        self.AdjustCamera()
-        
-        self.Render()
-    
-    def HandlePickEvent(self, interactor, event):
-        position = interactor.GetEventPosition()
-        #print ("PICK " + str(position))
-        vox = self.viewport2imageCoordinate(position)
-        #print ("Pixel %d,%d,%d Value %f" % vox )
-        self._viewer.cornerAnnotation.VisibilityOn()
-        self.UpdateCornerAnnotation("[%d,%d,%d] : %.2f" % vox , 0)
-        self.Render()
-        
-###############################################################################
-    
-        
-
-class CILViewer2D():
-    '''Simple Interactive Viewer based on VTK classes'''
-    
-    def __init__(self, dimx=600,dimy=600, ren=None, renWin=None,iren=None):
-        '''creates the rendering pipeline'''
-        # create a rendering window and renderer
-        if ren == None:
-            self.ren = vtk.vtkRenderer()
-        else:
-            self.ren = ren
-        if renWin == None:
-            self.renWin = vtk.vtkRenderWindow()
-        else:
-            self.renWin = renWin
-        if iren == None:
-            self.iren = vtk.vtkRenderWindowInteractor()
-        else:
-            self.iren = iren
-            
-        self.renWin.SetSize(dimx,dimy)
-        self.renWin.AddRenderer(self.ren)
-        
-        self.style = CILInteractorStyle(self)
-        
-        self.iren.SetInteractorStyle(self.style)
-        self.iren.SetRenderWindow(self.renWin)
-        self.iren.Initialize()
-        self.ren.SetBackground(.1, .2, .4)
-        
-        self.camera = vtk.vtkCamera()
-        self.camera.ParallelProjectionOn()
-        self.ren.SetActiveCamera(self.camera)
-        
-        # data
-        self.img3D = None
-        self.sliceno = 0
-        self.sliceOrientation = SLICE_ORIENTATION_XY
-        
-        #Actors
-        self.sliceActor = vtk.vtkImageActor()
-        self.voi = vtk.vtkExtractVOI()
-        self.wl = vtk.vtkImageMapToWindowLevelColors()
-        self.ia = vtk.vtkImageAccumulate()
-        self.sliceActorNo = 0
-        
-        #initial Window/Level
-        self.InitialLevel = 0
-        self.InitialWindow = 0
-        
-        #ViewerEvent
-        self.event = ViewerEvent.NO_EVENT
-        
-        # ROI Widget
-        self.ROIWidget = vtk.vtkBorderWidget()
-        self.ROIWidget.SetInteractor(self.iren)
-        self.ROIWidget.CreateDefaultRepresentation()
-        self.ROIWidget.GetBorderRepresentation().GetBorderProperty().SetColor(0,1,0)
-        self.ROIWidget.AddObserver(vtk.vtkWidgetEvent.Select, self.style.OnROIModifiedEvent, 1.0)
-        
-        # edge points of the ROI
-        self.ROI = ()
-        
-        #picker
-        self.picker = vtk.vtkPropPicker()
-        self.picker.PickFromListOn()
-        self.picker.AddPickList(self.sliceActor)
-
-        self.iren.SetPicker(self.picker)
-        
-        # corner annotation
-        self.cornerAnnotation = vtk.vtkCornerAnnotation()
-        self.cornerAnnotation.SetMaximumFontSize(12);
-        self.cornerAnnotation.PickableOff();
-        self.cornerAnnotation.VisibilityOff();
-        self.cornerAnnotation.GetTextProperty().ShadowOn();
-        self.cornerAnnotation.SetLayerNumber(1);
-        
-        
-        
-        # cursor doesn't show up
-        self.cursor = vtk.vtkCursor2D()
-        self.cursorMapper = vtk.vtkPolyDataMapper2D()
-        self.cursorActor = vtk.vtkActor2D()
-        self.cursor.SetModelBounds(-10, 10, -10, 10, 0, 0)
-        self.cursor.SetFocalPoint(0, 0, 0)
-        self.cursor.AllOff()
-        self.cursor.AxesOn()
-        self.cursorActor.PickableOff()
-        self.cursorActor.VisibilityOn()
-        self.cursorActor.GetProperty().SetColor(1, 1, 1)
-        self.cursorActor.SetLayerNumber(1)
-        self.cursorMapper.SetInputData(self.cursor.GetOutput())
-        self.cursorActor.SetMapper(self.cursorMapper)
-        
-        # Zoom
-        self.InitialCameraPosition = ()
-        
-        # XY Plot actor for histogram
-        self.displayHistogram = False
-        self.firstHistogram = 0
-        self.roiIA = vtk.vtkImageAccumulate()
-        self.roiVOI = vtk.vtkExtractVOI()
-        self.histogramPlotActor = vtk.vtkXYPlotActor()
-        self.histogramPlotActor.ExchangeAxesOff();
-        self.histogramPlotActor.SetXLabelFormat( "%g" )
-        self.histogramPlotActor.SetXLabelFormat( "%g" )
-        self.histogramPlotActor.SetAdjustXLabels(3)
-        self.histogramPlotActor.SetXTitle( "Level" )
-        self.histogramPlotActor.SetYTitle( "N" )
-        self.histogramPlotActor.SetXValuesToValue()
-        self.histogramPlotActor.SetPlotColor(0, (0,1,1) )
-        self.histogramPlotActor.SetPosition(0.6,0.6)
-        self.histogramPlotActor.SetPosition2(0.4,0.4)
- 
-        
-        
-    def GetInteractor(self):
-        return self.iren
-    
-    def GetRenderer(self):
-        return self.ren
-        
-    def setInput3DData(self, imageData):
-        self.img3D = imageData
-        self.installPipeline()
-
-    def setInputAsNumpy(self, numpyarray,  origin=(0,0,0), spacing=(1.,1.,1.), 
-                        rescale=True, dtype=vtk.VTK_UNSIGNED_SHORT):
-        importer = Converter.numpy2vtkImporter(numpyarray, spacing, origin)
-        importer.Update()
-        
-        if rescale:
-            # rescale to appropriate VTK_UNSIGNED_SHORT
-            stats = vtk.vtkImageAccumulate()
-            stats.SetInputData(importer.GetOutput())
-            stats.Update()
-            iMin = stats.GetMin()[0]
-            iMax = stats.GetMax()[0]
-            if (iMax - iMin == 0):
-                scale = 1
-            else:
-                if dtype == vtk.VTK_UNSIGNED_SHORT:
-                    scale = vtk.VTK_UNSIGNED_SHORT_MAX / (iMax - iMin)
-                elif dtype == vtk.VTK_UNSIGNED_INT:
-                    scale = vtk.VTK_UNSIGNED_INT_MAX / (iMax - iMin)
-    
-            shiftScaler = vtk.vtkImageShiftScale ()
-            shiftScaler.SetInputData(importer.GetOutput())
-            shiftScaler.SetScale(scale)
-            shiftScaler.SetShift(-iMin)
-            shiftScaler.SetOutputScalarType(dtype)
-            shiftScaler.Update()
-            self.img3D = shiftScaler.GetOutput()
-        else:
-            self.img3D = importer.GetOutput()
-            
-        self.installPipeline()
-
-    def displaySlice(self, sliceno = 0):
-        self.sliceno = sliceno
-        
-        self.updatePipeline()
-        
-        self.renWin.Render()
-        
-        return self.sliceActorNo
-
-    def updatePipeline(self, resetcamera = False):
-        extent = [ i for i in self.img3D.GetExtent()]
-        extent[self.sliceOrientation * 2] = self.sliceno
-        extent[self.sliceOrientation * 2 + 1] = self.sliceno 
-        self.voi.SetVOI(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        
-        self.voi.Update()
-        self.ia.Update()
-        self.wl.Update()
-        self.sliceActor.SetDisplayExtent(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        self.sliceActor.Update()
-        
-        self.updateCornerAnnotation("Slice %d/%d" % (self.sliceno + 1 , self.img3D.GetDimensions()[self.sliceOrientation]))
-        
-        if self.displayHistogram:
-            self.updateROIHistogram()            
-            
-        self.AdjustCamera(resetcamera)
-        
-        self.renWin.Render()
-        
-        
-    def installPipeline(self):
-        '''Slices a 3D volume and then creates an actor to be rendered'''
-        
-        self.ren.AddViewProp(self.cornerAnnotation)
-        
-        self.voi.SetInputData(self.img3D)
-        #select one slice in Z
-        extent = [ i for i in self.img3D.GetExtent()]
-        extent[self.sliceOrientation * 2] = self.sliceno
-        extent[self.sliceOrientation * 2 + 1] = self.sliceno 
-        self.voi.SetVOI(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        
-        self.voi.Update()
-        # set window/level for current slices
-         
-    
-        self.wl = vtk.vtkImageMapToWindowLevelColors()
-        self.ia.SetInputData(self.voi.GetOutput())
-        self.ia.Update()
-        cmax = self.ia.GetMax()[0]
-        cmin = self.ia.GetMin()[0]
-        
-        self.InitialLevel = (cmax+cmin)/2
-        self.InitialWindow = cmax-cmin
-
-        
-        self.wl.SetLevel(self.InitialLevel)
-        self.wl.SetWindow(self.InitialWindow)
-        
-        self.wl.SetInputData(self.voi.GetOutput())
-        self.wl.Update()
-            
-        self.sliceActor.SetInputData(self.wl.GetOutput())
-        self.sliceActor.SetDisplayExtent(extent[0], extent[1],
-                   extent[2], extent[3],
-                   extent[4], extent[5])
-        self.sliceActor.Update()
-        self.sliceActor.SetInterpolate(False)
-        self.ren.AddActor(self.sliceActor)
-        self.ren.ResetCamera()
-        self.ren.Render()
-        
-        self.AdjustCamera()
-        
-        self.ren.AddViewProp(self.cursorActor)
-        self.cursorActor.VisibilityOn()
-        
-        self.iren.Initialize()
-        self.renWin.Render()
-        #self.iren.Start()
-    
-    def AdjustCamera(self, resetcamera = False):
-        self.ren.ResetCameraClippingRange()
-        if resetcamera:
-            self.ren.ResetCamera()
-        
-            
-    def getROI(self):
-        return self.ROI
-    
-    def getROIExtent(self):
-        p0 = self.ROI[0]
-        p1 = self.ROI[1]
-        return (p0[0], p1[0],p0[1],p1[1],p0[2],p1[2])
-        
-    ############### Handle events are moved to the interactor style
-    
-        
-    def viewport2imageCoordinate(self, viewerposition):
-        #Determine point index
-        
-        self.picker.Pick(viewerposition[0], viewerposition[1], 0.0, self.GetRenderer())
-        pickPosition = list(self.picker.GetPickPosition())
-        pickPosition[self.sliceOrientation] = \
-            self.img3D.GetSpacing()[self.sliceOrientation] * self.sliceno + \
-            self.img3D.GetOrigin()[self.sliceOrientation]
-        print ("Pick Position " + str (pickPosition))
-        
-        if (pickPosition != [0,0,0]):
-            dims = self.img3D.GetDimensions()
-            print (dims)
-            spac = self.img3D.GetSpacing()
-            orig = self.img3D.GetOrigin()
-            imagePosition = [int(pickPosition[i] / spac[i] + orig[i]) for i in range(3) ]
-            
-            pixelValue = self.img3D.GetScalarComponentAsDouble(imagePosition[0], imagePosition[1], imagePosition[2], 0)
-            return (imagePosition[0], imagePosition[1], imagePosition[2] , pixelValue)
-        else:
-            return (0,0,0,0)
-
-        
-    
-    def GetRenderWindow(self):
-        return self.renWin
-    
-    
-    def startRenderLoop(self):
-        self.iren.Start()
-        
-    def GetSliceOrientation(self):
-        return self.sliceOrientation
-    
-    def GetActiveSlice(self):
-        return self.sliceno
-    
-    def updateCornerAnnotation(self, text , idx=0, visibility=True):
-        if visibility:
-            self.cornerAnnotation.VisibilityOn()
-        else:
-            self.cornerAnnotation.VisibilityOff()
-            
-        self.cornerAnnotation.SetText(idx, text)
-        self.iren.Render()
-        
-    def saveRender(self, filename, renWin=None):
-        '''Save the render window to PNG file'''
-        # screenshot code:
-        w2if = vtk.vtkWindowToImageFilter()
-        if renWin == None:
-            renWin = self.renWin
-        w2if.SetInput(renWin)
-        w2if.Update()
-         
-        writer = vtk.vtkPNGWriter()
-        writer.SetFileName("%s.png" % (filename))
-        writer.SetInputConnection(w2if.GetOutputPort())
-        writer.Write()
-    
-    def updateROIHistogram(self):
-        
-        extent = [0 for i in range(6)]
-        if self.GetSliceOrientation() == SLICE_ORIENTATION_XY: 
-            print ("slice orientation : XY")
-            extent[0] = self.ROI[0][0]
-            extent[1] = self.ROI[1][0]
-            extent[2] = self.ROI[0][1]
-            extent[3] = self.ROI[1][1]
-            extent[4] = self.GetActiveSlice()
-            extent[5] = self.GetActiveSlice()+1
-            #y = abs(roi[1][1] - roi[0][1])
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_XZ:
-            print ("slice orientation : XY")
-            extent[0] = self.ROI[0][0]
-            extent[1] = self.ROI[1][0]
-            #x = abs(roi[1][0] - roi[0][0])
-            extent[4] = self.ROI[0][2]
-            extent[5] = self.ROI[1][2]
-            #y = abs(roi[1][2] - roi[0][2])
-            extent[2] = self.GetActiveSlice()
-            extent[3] = self.GetActiveSlice()+1
-        elif self.GetSliceOrientation() == SLICE_ORIENTATION_YZ:
-            print ("slice orientation : XY")
-            extent[2] = self.ROI[0][1]
-            extent[3] = self.ROI[1][1]
-            #x = abs(roi[1][1] - roi[0][1])
-            extent[4] = self.ROI[0][2]
-            extent[5] = self.ROI[1][2]
-            #y = abs(roi[1][2] - roi[0][2])
-            extent[0] = self.GetActiveSlice()
-            extent[1] = self.GetActiveSlice()+1
-        
-        self.roiVOI.SetVOI(extent)
-        self.roiVOI.SetInputData(self.img3D)
-        self.roiVOI.Update()
-        irange = self.roiVOI.GetOutput().GetScalarRange()
-        
-        self.roiIA.SetInputData(self.roiVOI.GetOutput())
-        self.roiIA.IgnoreZeroOff()
-        self.roiIA.SetComponentExtent(0,int(irange[1]-irange[0]-1),0,0,0,0 )
-        self.roiIA.SetComponentOrigin( int(irange[0]),0,0 );
-        self.roiIA.SetComponentSpacing( 1,0,0 );
-        self.roiIA.Update()
-        
-        self.histogramPlotActor.AddDataSetInputConnection(self.roiIA.GetOutputPort())
-        self.histogramPlotActor.SetXRange(irange[0],irange[1])
-        
-        self.histogramPlotActor.SetYRange( self.roiIA.GetOutput().GetScalarRange() )
-        
-        
\ No newline at end of file
diff --git a/src/Python/ccpi/viewer/QVTKWidget.py b/src/Python/ccpi/viewer/QVTKWidget.py
deleted file mode 100644
index 906786b..0000000
--- a/src/Python/ccpi/viewer/QVTKWidget.py
+++ /dev/null
@@ -1,340 +0,0 @@
-################################################################################
-# File:         QVTKWidget.py
-# Author:       Edoardo Pasca
-# Description:  PyVE Viewer Qt widget
-#
-# License:
-#               This file is part of PyVE. PyVE is an open-source image 
-#               analysis and visualization environment focused on medical
-#               imaging. More info at http://pyve.sourceforge.net
-#	       
-#               Copyright (c) 2011-2012 Edoardo Pasca, Lukas Batteau 
-#               All rights reserved.
-#	       
-#              Redistribution and use in source and binary forms, with or
-#              without modification, are permitted provided that the following
-#              conditions are met:
-#
-#              Redistributions of source code must retain the above copyright
-#              notice, this list of conditions and the following disclaimer.
-#              Redistributions in binary form must reproduce the above
-#              copyright notice, this list of conditions and the following
-#              disclaimer in the documentation and/or other materials provided
-#              with the distribution.  Neither name of Edoardo Pasca or Lukas
-#              Batteau nor the names of any contributors may be used to endorse
-#              or promote products derived from this software without specific
-#              prior written permission.
-#
-#              THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-#              CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
-#              INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-#              MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-#              DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
-#              LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-#              OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-#              PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-#              OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-#              THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-#              TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
-#              OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
-#              OF SUCH DAMAGE.
-#
-# CHANGE HISTORY
-#
-# 20120118    Edoardo Pasca        Initial version
-#             
-###############################################################################
-
-import os
-from PyQt5 import QtCore, QtGui, QtWidgets
-#import itk
-import vtk
-#from viewer import PyveViewer
-from ccpi.viewer.CILViewer2D import CILViewer2D , Converter
-
-class QVTKWidget(QtWidgets.QWidget):
-
-    """ A QVTKWidget for Python and Qt."""
-
-    # Map between VTK and Qt cursors.
-    _CURSOR_MAP = {
-        0:  QtCore.Qt.ArrowCursor,          # VTK_CURSOR_DEFAULT
-        1:  QtCore.Qt.ArrowCursor,          # VTK_CURSOR_ARROW
-        2:  QtCore.Qt.SizeBDiagCursor,      # VTK_CURSOR_SIZENE
-        3:  QtCore.Qt.SizeFDiagCursor,      # VTK_CURSOR_SIZENWSE
-        4:  QtCore.Qt.SizeBDiagCursor,      # VTK_CURSOR_SIZESW
-        5:  QtCore.Qt.SizeFDiagCursor,      # VTK_CURSOR_SIZESE
-        6:  QtCore.Qt.SizeVerCursor,        # VTK_CURSOR_SIZENS
-        7:  QtCore.Qt.SizeHorCursor,        # VTK_CURSOR_SIZEWE
-        8:  QtCore.Qt.SizeAllCursor,        # VTK_CURSOR_SIZEALL
-        9:  QtCore.Qt.PointingHandCursor,   # VTK_CURSOR_HAND
-        10: QtCore.Qt.CrossCursor,          # VTK_CURSOR_CROSSHAIR
-    }
-
-    def __init__(self, parent=None, wflags=QtCore.Qt.WindowFlags(), **kw):
-        # the current button
-        self._ActiveButton = QtCore.Qt.NoButton
-
-        # private attributes
-        self.__oldFocus = None
-        self.__saveX = 0
-        self.__saveY = 0
-        self.__saveModifiers = QtCore.Qt.NoModifier
-        self.__saveButtons = QtCore.Qt.NoButton
-        self.__timeframe = 0
-
-        # create qt-level widget
-        QtWidgets.QWidget.__init__(self, parent, wflags|QtCore.Qt.MSWindowsOwnDC)
-        
-        # Link to PyVE Viewer
-        self._PyveViewer = CILViewer2D()
-        #self._Viewer = self._PyveViewer._vtkPyveViewer
-        
-        self._Iren = self._PyveViewer.GetInteractor()
-        #self._Iren = self._Viewer.GetRenderWindow().GetInteractor()
-        self._RenderWindow = self._PyveViewer.GetRenderWindow()
-        #self._RenderWindow = self._Viewer.GetRenderWindow()
-        
-        self._Iren.Register(self._RenderWindow)
-        self._Iren.SetRenderWindow(self._RenderWindow)
-        self._RenderWindow.SetWindowInfo(str(int(self.winId())))
-
-        # do all the necessary qt setup
-        self.setAttribute(QtCore.Qt.WA_OpaquePaintEvent)
-        self.setAttribute(QtCore.Qt.WA_PaintOnScreen)
-        self.setMouseTracking(True) # get all mouse events
-        self.setFocusPolicy(QtCore.Qt.WheelFocus)
-        self.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding))
-
-        self._Timer = QtCore.QTimer(self)
-        #self.connect(self._Timer, QtCore.pyqtSignal('timeout()'), self.TimerEvent)
-
-        self._Iren.AddObserver('CreateTimerEvent', self.CreateTimer)
-        self._Iren.AddObserver('DestroyTimerEvent', self.DestroyTimer)
-        self._Iren.GetRenderWindow().AddObserver('CursorChangedEvent',
-                                                 self.CursorChangedEvent)
-
-    # Destructor
-    def __del__(self):
-        self._Iren.UnRegister(self._RenderWindow)
-        #QtWidgets.QWidget.__del__(self)
-
-    # Display image data
-    def SetInput(self, imageData):
-        self._PyveViewer.setInput3DData(imageData)
-        
-    # GetInteractor
-    def GetInteractor(self):
-        return self._Iren
-    
-    # Display image data
-    def GetPyveViewer(self):
-        return self._PyveViewer
-
-    def __getattr__(self, attr):
-        """Makes the object behave like a vtkGenericRenderWindowInteractor"""
-        print (attr)
-        if attr == '__vtk__':
-            return lambda t=self._Iren: t
-        elif hasattr(self._Iren, attr):
-            return getattr(self._Iren, attr)
-#        else:
-#            raise AttributeError( self.__class__.__name__ + \
-#                  " has no attribute named " + attr )
-
-    def CreateTimer(self, obj, evt):
-        self._Timer.start(10)
-
-    def DestroyTimer(self, obj, evt):
-        self._Timer.stop()
-        return 1
-
-    def TimerEvent(self):
-        self._Iren.InvokeEvent("TimerEvent")
-
-    def CursorChangedEvent(self, obj, evt):
-        """Called when the CursorChangedEvent fires on the render window."""
-        # This indirection is needed since when the event fires, the current
-        # cursor is not yet set so we defer this by which time the current
-        # cursor should have been set.
-        QtCore.QTimer.singleShot(0, self.ShowCursor)
-
-    def HideCursor(self):
-        """Hides the cursor."""
-        self.setCursor(QtCore.Qt.BlankCursor)
-
-    def ShowCursor(self):
-        """Shows the cursor."""
-        vtk_cursor = self._Iren.GetRenderWindow().GetCurrentCursor()
-        qt_cursor = self._CURSOR_MAP.get(vtk_cursor, QtCore.Qt.ArrowCursor)
-        self.setCursor(qt_cursor)
-
-    def sizeHint(self):
-        return QtCore.QSize(400, 400)
-
-    def paintEngine(self):
-        return None
-
-    def paintEvent(self, ev):
-        self._RenderWindow.Render()
-
-    def resizeEvent(self, ev):
-        self._RenderWindow.Render()
-        w = self.width()
-        h = self.height()
-
-        self._RenderWindow.SetSize(w, h)
-        self._Iren.SetSize(w, h)
-
-    def _GetCtrlShiftAlt(self, ev):
-        ctrl = shift = alt = False
-
-        if hasattr(ev, 'modifiers'):
-            if ev.modifiers() & QtCore.Qt.ShiftModifier:
-                shift = True
-            if ev.modifiers() & QtCore.Qt.ControlModifier:
-                ctrl = True
-            if ev.modifiers() & QtCore.Qt.AltModifier:
-                alt = True
-        else:
-            if self.__saveModifiers & QtCore.Qt.ShiftModifier:
-                shift = True
-            if self.__saveModifiers & QtCore.Qt.ControlModifier:
-                ctrl = True
-            if self.__saveModifiers & QtCore.Qt.AltModifier:
-                alt = True
-
-        return ctrl, shift, alt
-
-    def enterEvent(self, ev):
-        if not self.hasFocus():
-            self.__oldFocus = self.focusWidget()
-            self.setFocus()
-
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        self._Iren.SetEventInformationFlipY(self.__saveX, self.__saveY,
-                                            ctrl, shift, chr(0), 0, None)
-        self._Iren.SetAltKey(alt)
-        self._Iren.InvokeEvent("EnterEvent")
-
-    def leaveEvent(self, ev):
-        if self.__saveButtons == QtCore.Qt.NoButton and self.__oldFocus:
-            self.__oldFocus.setFocus()
-            self.__oldFocus = None
-
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        self._Iren.SetEventInformationFlipY(self.__saveX, self.__saveY,
-                                            ctrl, shift, chr(0), 0, None)
-        self._Iren.SetAltKey(alt)
-        self._Iren.InvokeEvent("LeaveEvent")
-
-    def mousePressEvent(self, ev):
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        repeat = 0
-        if ev.type() == QtCore.QEvent.MouseButtonDblClick:
-            repeat = 1
-        self._Iren.SetEventInformationFlipY(ev.x(), ev.y(),
-                                            ctrl, shift, chr(0), repeat, None)
-
-        self._Iren.SetAltKey(alt)
-        self._ActiveButton = ev.button()
-
-        if self._ActiveButton == QtCore.Qt.LeftButton:
-            self._Iren.InvokeEvent("LeftButtonPressEvent")
-        elif self._ActiveButton == QtCore.Qt.RightButton:
-            self._Iren.InvokeEvent("RightButtonPressEvent")
-        elif self._ActiveButton == QtCore.Qt.MidButton:
-            self._Iren.InvokeEvent("MiddleButtonPressEvent")
-
-    def mouseReleaseEvent(self, ev):
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        self._Iren.SetEventInformationFlipY(ev.x(), ev.y(),
-                                            ctrl, shift, chr(0), 0, None)
-        self._Iren.SetAltKey(alt)
-
-        if self._ActiveButton == QtCore.Qt.LeftButton:
-            self._Iren.InvokeEvent("LeftButtonReleaseEvent")
-        elif self._ActiveButton == QtCore.Qt.RightButton:
-            self._Iren.InvokeEvent("RightButtonReleaseEvent")
-        elif self._ActiveButton == QtCore.Qt.MidButton:
-            self._Iren.InvokeEvent("MiddleButtonReleaseEvent")
-
-    def mouseMoveEvent(self, ev):
-        self.__saveModifiers = ev.modifiers()
-        self.__saveButtons = ev.buttons()
-        self.__saveX = ev.x()
-        self.__saveY = ev.y()
-
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        self._Iren.SetEventInformationFlipY(ev.x(), ev.y(),
-                                            ctrl, shift, chr(0), 0, None)
-        self._Iren.SetAltKey(alt)
-        self._Iren.InvokeEvent("MouseMoveEvent")
-
-    def keyPressEvent(self, ev):
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        if ev.key() < 256:
-            key = str(ev.text())
-        else:
-            key = chr(0)
-
-        self._Iren.SetEventInformationFlipY(self.__saveX, self.__saveY,
-                                            ctrl, shift, key, 0, None)
-        self._Iren.SetAltKey(alt)
-        self._Iren.InvokeEvent("KeyPressEvent")
-        self._Iren.InvokeEvent("CharEvent")
-
-    def keyReleaseEvent(self, ev):
-        ctrl, shift, alt = self._GetCtrlShiftAlt(ev)
-        if ev.key() < 256:
-            key = chr(ev.key())
-        else:
-            key = chr(0)
-
-        self._Iren.SetEventInformationFlipY(self.__saveX, self.__saveY,
-                                            ctrl, shift, key, 0, None)
-        self._Iren.SetAltKey(alt)
-        self._Iren.InvokeEvent("KeyReleaseEvent")
-
-    def wheelEvent(self, ev):
-        print ("angleDeltaX %d" % ev.angleDelta().x())
-        print ("angleDeltaY %d" % ev.angleDelta().y())
-        if ev.angleDelta().y() >= 0:
-            self._Iren.InvokeEvent("MouseWheelForwardEvent")
-        else:
-            self._Iren.InvokeEvent("MouseWheelBackwardEvent")
-
-    def GetRenderWindow(self):
-        return self._RenderWindow
-
-    def Render(self):
-        self.update()
-
-
-def QVTKExample():    
-    """A simple example that uses the QVTKWidget class."""
-
-    # every QT app needs an app
-    app = QtWidgets.QApplication(['PyVE QVTKWidget Example'])
-    page_VTK = QtWidgets.QWidget()
-    page_VTK.resize(500,500)
-    layout = QtWidgets.QVBoxLayout(page_VTK)
-    # create the widget
-    widget = QVTKWidget(parent=None)
-    layout.addWidget(widget)
-    
-    #reader = vtk.vtkPNGReader()
-    #reader.SetFileName("F:\Diagnostics\Images\PyVE\VTKData\Data\camscene.png")
-    reader = vtk.vtkMetaImageReader()
-    reader.SetFileName("C:\\Users\\ofn77899\\Documents\\GitHub\\CCPi-Simpleflex\\data\\head.mha")
-    reader.Update()
-    
-    widget.SetInput(reader.GetOutput())
-    
-    # show the widget
-    page_VTK.show()
-    # start event processing
-    app.exec_()
-
-if __name__ == "__main__":
-    QVTKExample()
diff --git a/src/Python/ccpi/viewer/QVTKWidget2.py b/src/Python/ccpi/viewer/QVTKWidget2.py
deleted file mode 100644
index e32e1c2..0000000
--- a/src/Python/ccpi/viewer/QVTKWidget2.py
+++ /dev/null
@@ -1,84 +0,0 @@
-################################################################################
-# File:         QVTKWidget.py
-# Author:       Edoardo Pasca
-# Description:  PyVE Viewer Qt widget
-#
-# License:
-#               This file is part of PyVE. PyVE is an open-source image 
-#               analysis and visualization environment focused on medical
-#               imaging. More info at http://pyve.sourceforge.net
-#	       
-#               Copyright (c) 2011-2012 Edoardo Pasca, Lukas Batteau 
-#               All rights reserved.
-#	       
-#              Redistribution and use in source and binary forms, with or
-#              without modification, are permitted provided that the following
-#              conditions are met:
-#
-#              Redistributions of source code must retain the above copyright
-#              notice, this list of conditions and the following disclaimer.
-#              Redistributions in binary form must reproduce the above
-#              copyright notice, this list of conditions and the following
-#              disclaimer in the documentation and/or other materials provided
-#              with the distribution.  Neither name of Edoardo Pasca or Lukas
-#              Batteau nor the names of any contributors may be used to endorse
-#              or promote products derived from this software without specific
-#              prior written permission.
-#
-#              THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-#              CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
-#              INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-#              MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-#              DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
-#              LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-#              OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-#              PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-#              OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-#              THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-#              TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
-#              OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
-#              OF SUCH DAMAGE.
-#
-# CHANGE HISTORY
-#
-# 20120118    Edoardo Pasca        Initial version
-#             
-###############################################################################
-
-import os
-from PyQt5 import QtCore, QtGui, QtWidgets
-#import itk
-import vtk
-#from viewer import PyveViewer
-from ccpi.viewer.CILViewer2D import CILViewer2D , Converter
-from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
-
-class QVTKWidget(QVTKRenderWindowInteractor):
-
-    
-    def __init__(self, parent=None, wflags=QtCore.Qt.WindowFlags(), **kw):
-        kw = dict() 
-        super().__init__(parent, **kw)
-        
-        
-        # Link to PyVE Viewer
-        self._PyveViewer = CILViewer2D(400,400)
-        #self._Viewer = self._PyveViewer._vtkPyveViewer
-        
-        self._Iren = self._PyveViewer.GetInteractor()
-        kw['iren'] = self._Iren
-        #self._Iren = self._Viewer.GetRenderWindow().GetInteractor()
-        self._RenderWindow = self._PyveViewer.GetRenderWindow()
-        #self._RenderWindow = self._Viewer.GetRenderWindow()
-        kw['rw'] = self._RenderWindow
-       
-        
-        
-       
-    def GetInteractor(self):
-        return self._Iren
-    
-    # Display image data
-    def SetInput(self, imageData):
-        self._PyveViewer.setInput3DData(imageData)
-    
\ No newline at end of file
diff --git a/src/Python/ccpi/viewer/__init__.py b/src/Python/ccpi/viewer/__init__.py
deleted file mode 100644
index 946188b..0000000
--- a/src/Python/ccpi/viewer/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-from ccpi.viewer.CILViewer import CILViewer
\ No newline at end of file
diff --git a/src/Python/ccpi/viewer/__pycache__/CILViewer.cpython-35.pyc b/src/Python/ccpi/viewer/__pycache__/CILViewer.cpython-35.pyc
deleted file mode 100644
index 711f77a..0000000
--- a/src/Python/ccpi/viewer/__pycache__/CILViewer.cpython-35.pyc
+++ /dev/null
diff --git a/src/Python/ccpi/viewer/__pycache__/CILViewer2D.cpython-35.pyc b/src/Python/ccpi/viewer/__pycache__/CILViewer2D.cpython-35.pyc
deleted file mode 100644
index 77c2ca8..0000000
--- a/src/Python/ccpi/viewer/__pycache__/CILViewer2D.cpython-35.pyc
+++ /dev/null
diff --git a/src/Python/ccpi/viewer/__pycache__/QVTKWidget.cpython-35.pyc b/src/Python/ccpi/viewer/__pycache__/QVTKWidget.cpython-35.pyc
deleted file mode 100644
index 3d11b87..0000000
--- a/src/Python/ccpi/viewer/__pycache__/QVTKWidget.cpython-35.pyc
+++ /dev/null
diff --git a/src/Python/ccpi/viewer/__pycache__/QVTKWidget2.cpython-35.pyc b/src/Python/ccpi/viewer/__pycache__/QVTKWidget2.cpython-35.pyc
deleted file mode 100644
index 2fa2eaf..0000000
--- a/src/Python/ccpi/viewer/__pycache__/QVTKWidget2.cpython-35.pyc
+++ /dev/null
diff --git a/src/Python/ccpi/viewer/__pycache__/__init__.cpython-35.pyc b/src/Python/ccpi/viewer/__pycache__/__init__.cpython-35.pyc
deleted file mode 100644
index fcea537..0000000
--- a/src/Python/ccpi/viewer/__pycache__/__init__.cpython-35.pyc
+++ /dev/null
diff --git a/src/Python/ccpi/viewer/embedvtk.py b/src/Python/ccpi/viewer/embedvtk.py
deleted file mode 100644
index b5eb0a7..0000000
--- a/src/Python/ccpi/viewer/embedvtk.py
+++ /dev/null
@@ -1,75 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Created on Thu Jul 27 12:18:58 2017
-
-@author: ofn77899
-"""
-
-#!/usr/bin/env python
- 
-import sys
-import vtk
-from PyQt5 import QtCore, QtWidgets
-from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
-import QVTKWidget2
- 
-class MainWindow(QtWidgets.QMainWindow):
- 
-    def __init__(self, parent = None):
-        QtWidgets.QMainWindow.__init__(self, parent)
- 
-        self.frame = QtWidgets.QFrame()
- 
-        self.vl = QtWidgets.QVBoxLayout()
-#        self.vtkWidget = QVTKRenderWindowInteractor(self.frame)
-        
-        self.vtkWidget = QVTKWidget2.QVTKWidget(self.frame)
-        self.iren = self.vtkWidget.GetInteractor()
-        self.vl.addWidget(self.vtkWidget)
-        
-        
-        
-    
-        self.ren = vtk.vtkRenderer()
-        self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
-#        self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
-# 
-#        # Create source
-#        source = vtk.vtkSphereSource()
-#        source.SetCenter(0, 0, 0)
-#        source.SetRadius(5.0)
-# 
-#        # Create a mapper
-#        mapper = vtk.vtkPolyDataMapper()
-#        mapper.SetInputConnection(source.GetOutputPort())
-# 
-#        # Create an actor
-#        actor = vtk.vtkActor()
-#        actor.SetMapper(mapper)
-# 
-#        self.ren.AddActor(actor)
-# 
-#        self.ren.ResetCamera()
-# 
-        self.frame.setLayout(self.vl)
-        self.setCentralWidget(self.frame)
-        reader = vtk.vtkMetaImageReader()
-        reader.SetFileName("C:\\Users\\ofn77899\\Documents\\GitHub\\CCPi-Simpleflex\\data\\head.mha")
-        reader.Update()
-        
-        self.vtkWidget.SetInput(reader.GetOutput())
-        
-        #self.vktWidget.Initialize()
-        #self.vktWidget.Start()
-        
-        self.show()
-        #self.iren.Initialize()
- 
- 
-if __name__ == "__main__":
- 
-    app = QtWidgets.QApplication(sys.argv)
- 
-    window = MainWindow()
- 
-    sys.exit(app.exec_())
\ No newline at end of file