def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
logger.debug(
"OverviewScene::DisplayObjectMeshes {}".format(suppressLabels))
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
logger.debug( "OverviewScene::DisplayObjectMeshes {}".format( suppressLabels ) )
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
class OverviewScene(QWidget):
#emitted when slice changes
# int -- slice number
# int -- axis number
changedSlice = pyqtSignal(int,int)
def resizeEvent(self, event):
QWidget.resizeEvent(self,event)
self.qvtk.update() #needed on OS X
def slicingCallback(self, obj, event):
def maybeUpdateSlice(old):
num = obj.coordinate[obj.lastChangedAxis]
axis = obj.lastChangedAxis
if old == (num, axis):
self.changedSlice.emit(num, axis)
#when dragging the slice, wait for some milliseconds
#to see whether the user is dragging on before
#sending a signal
num = obj.coordinate[obj.lastChangedAxis]
axis = obj.lastChangedAxis
QTimer.singleShot(50, partial(maybeUpdateSlice, (num, axis)))
def ShowPlaneWidget(self, axis, show):
self.planes.ShowPlane(axis, show)
self.qvtk.update()
def TogglePlaneWidgetX(self):
self.planes.TogglePlaneWidget(0)
self.qvtk.update()
def TogglePlaneWidgetY(self):
self.planes.TogglePlaneWidget(1)
self.qvtk.update()
def TogglePlaneWidgetZ(self):
self.planes.TogglePlaneWidget(2)
self.qvtk.update()
@property
def dataShape(self):
return self._dataShape
@dataShape.setter
def dataShape(self, shape):
if shape == self._dataShape:
return
self._dataShape = shape
if self.planes:
self.planes.RemoveObserver(self.coordEventObserver)
self.qvtk.renderer.RemoveViewProp(self.planes)
del self.planes
self.planes = SlicingPlanesWidget(shape, self.qvtk.GetInteractor())
#self.planes.SetInteractor(self.qvtk.GetInteractor())
self.coordEventObserver = self.planes.AddObserver("CoordinatesEvent", self.slicingCallback)
self.planes.SetCoordinate([0,0,0])
self.planes.SetPickable(False)
## Add RGB arrow axes
if self.axes:
self.qvtk.renderer.RemoveActor(self.axes)
del self.axes
self.axes = vtkAxesActor();
self.axes.AxisLabelsOff()
self.axes.SetTotalLength(0.5*shape[0], 0.5*shape[1], 0.5*shape[2])
self.axes.SetShaftTypeToCylinder()
self.qvtk.renderer.AddActor(self.axes)
self.qvtk.renderer.AddActor(self.planes)
self.qvtk.renderer.ResetCamera()
#for some reason, we have to do this afterwards!
self.planes.togglePlanesOn()
def __init__(self, parent=None):
super(OverviewScene, self).__init__(parent)
self.coordEventObserver = None
self.colorTable = None
self.anaglyph = False
self.sceneItems = []
self.cutter = 3*[None]
self.objects = []
self.planes = None
self.axes = None
self._dataShape = None
layout = QVBoxLayout()
layout.setMargin(0)
layout.setSpacing(0)
self.qvtk = QVTKOpenGLWidget()
layout.addWidget(self.qvtk)
self.setLayout(layout)
self.qvtk.init()
hbox = QHBoxLayout(None)
hbox.setMargin(0)
hbox.setSpacing(5)
hbox.setContentsMargins(5,3,5,3)
def delete_gl_widget():
# This is called just before the app quits to avoid this error during shutdown:
# QGLContext::makeCurrent: Cannot make invalid context current
self.qvtk.setParent(None)
del self.qvtk
QApplication.instance().aboutToQuit.connect( delete_gl_widget )
b1 = QToolButton()
b1.setIcon(QIcon(':icons/icons/x-axis.png'))
b1.setToolTip("Show x slicing plane")
b1.setCheckable(True); b1.setChecked(True)
b2 = QToolButton()
b2.setIcon(QIcon(':icons/icons/y-axis.png'))
b2.setToolTip("Show y slicing plane")
b2.setCheckable(True); b2.setChecked(True)
b3 = QToolButton()
b3.setIcon(QIcon(':icons/icons/z-axis.png'))
b3.setToolTip("Show z slicing plane")
b3.setCheckable(True); b3.setChecked(True)
bAnaglyph = QToolButton()
bAnaglyph.setIcon(QIcon(':icons/icons/3d_glasses.png'))
bAnaglyph.setToolTip("Show in anaglyph 3D")
bAnaglyph.setCheckable(True); bAnaglyph.setChecked(False)
self.bUndock = QToolButton()
self.bUndock.setIcon(QIcon(":/icons/icons/arrow_up.png"))
self.bUndock.setToolTip("Dock/undock this view")
'''
bCutter = QToolButton()
bCutter.setIcon(QIcon(':icons/icons/edit-cut.png'))
bCutter.setCheckable(True); bCutter.setChecked(False)
self.bCutter = bCutter
bExportMesh = QToolButton()
bExportMesh.setIcon(QIcon(':icons/icons/document-save-as.png'))
'''
hbox.addWidget(b1)
hbox.addWidget(b2)
hbox.addWidget(b3)
hbox.addWidget(bAnaglyph)
hbox.addWidget(self.bUndock)
#hbox.addWidget(bCutter)
hbox.addStretch()
#hbox.addWidget(bExportMesh)
layout.addLayout(hbox)
self.connect(b1, SIGNAL("clicked()"), self.TogglePlaneWidgetX)
self.connect(b2, SIGNAL("clicked()"), self.TogglePlaneWidgetY)
self.connect(b3, SIGNAL("clicked()"), self.TogglePlaneWidgetZ)
self.connect(bAnaglyph, SIGNAL("clicked()"), self.ToggleAnaglyph3D)
#self.connect(bExportMesh, SIGNAL("clicked()"), self.exportMesh)
#bCutter.toggled.connect(self.useCutterToggled)
self.connect(self.qvtk, SIGNAL("objectPicked"), self.__onObjectPicked)
def layerContextMenu(layer, menu):
self.layerContextMenu(layer,menu)
Event.register("layerContextMenuRequested", layerContextMenu)
def layerContextMenu(self, layer, menu):
if isinstance( layer, ColortableLayer ):
def show3D():
data = layer._datasources[0].request((slice(0,1,None),
slice(None,None,None), slice(None,None,None),
slice(None,None,None),
slice(0,1,None))).wait()[0,:,:,:,0]
self.SetColorTable(layer._colorTable)
self.DisplayObjectMeshes(data)#, suppressLabels=(), smooth=True):
show3dAction = QAction("Show in 3D Overview", menu)
show3dAction.triggered.connect(show3D)
menu.addAction(show3dAction)
@property
def useCutter(self):
return False
#return self.bCutter.isChecked()
def useCutterToggled(self):
self.__updateCutter()
if self.useCutter:
for i in range(3): self.qvtk.renderer.AddActor(self.cutter[i])
else:
for i in range(3): self.qvtk.renderer.RemoveActor(self.cutter[i])
self.qvtk.update()
def exportMesh(self):
filename = QFileDialog.getSaveFileName(self,"Save Meshes As")
self.qvtk.actors.InitTraversal();
for i in range(self.qvtk.actors.GetNumberOfItems()):
p = self.qvtk.actors.GetNextProp()
if p.GetPickable() and self.qvtk.actors.IsItemPresent(p):
vtpFilename = "%s%02d.vtp" % (filename, i)
objFilename = "%s%02d.obj" % (filename, i)
logger.info( "writing VTP file '%s'" % vtpFilename )
d = p.GetMapper().GetInput()
w = vtkPolyDataWriter()
w.SetFileTypeToASCII()
w.SetInput(d)
w.SetFileName("%s%02d.vtp" % (filename, i))
w.Write()
logger.info( "converting to OBJ file '%s'" % objFilename )
convertVTPtoOBJ(vtpFilename, objFilename)
#renWin = vtkRenderWindow()
#ren = vtkRenderer()
#renWin.AddRenderer(ren)
#ren.AddActor(p)
#exporter = vtkOBJExporter()
#exporter.SetInput(renWin)
#exporter.SetFilePrefix("%s%02d" % (filename, i))
#exporter.Update()
def __onObjectPicked(self, coor):
self.ChangeSlice( coor[0], 0)
self.ChangeSlice( coor[1], 1)
self.ChangeSlice( coor[2], 2)
def __onLeftButtonReleased(self):
logger.debug( "CLICK" )
def ToggleAnaglyph3D(self):
self.anaglyph = not self.anaglyph
if self.anaglyph:
logger.debug( 'setting stero mode ON' )
self.qvtk.renderWindow.StereoRenderOn()
self.qvtk.renderWindow.SetStereoTypeToAnaglyph()
else:
logger.debug( 'setting stero mode OFF' )
self.qvtk.renderWindow.StereoRenderOff()
self.qvtk.update()
def __updateCutter(self):
if(self.useCutter):
#print "Update cutter"
for i in range(3):
if self.cutter[i]: self.cutter[i].SetPlane(self.planes.Plane(i))
else:
pass
#print "Do NOT update cutter"
def ChangeSlice(self, num, axis):
c = copy.copy(self.planes.coordinate)
c[axis] = num
self.planes.SetCoordinate(c)
# set the current point as the camera's focal point
cam = self.qvtk.renderer.GetActiveCamera()
cam.SetFocalPoint( *c ) #rotate around this point
cam.Modified();
self.__updateCutter()
self.qvtk.update()
def display(self, axis):
self.qvtk.update()
def redisplay(self):
self.qvtk.update()
def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
logger.debug( "OverviewScene::DisplayObjectMeshes {}".format( suppressLabels ) )
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
def SetColorTable(self, table):
self.colorTable = table
def onObjectMeshesComputed(self):
self.dlg.accept()
logger.debug( "*** Preparing 3D view ***" )
#Clean up possible previous 3D displays
for c in self.cutter:
if c: self.qvtk.renderer.RemoveActor(c)
for a in self.objects:
self.qvtk.renderer.RemoveActor(a)
self.polygonAppender = vtkAppendPolyData()
for g in self.dlg.extractor.meshes.values():
self.polygonAppender.AddInput(g)
self.cutter[0] = Outliner(self.polygonAppender.GetOutput())
self.cutter[0].GetOutlineProperty().SetColor(1,0,0)
self.cutter[1] = Outliner(self.polygonAppender.GetOutput())
self.cutter[1].GetOutlineProperty().SetColor(0,1,0)
self.cutter[2] = Outliner(self.polygonAppender.GetOutput())
self.cutter[2].GetOutlineProperty().SetColor(0,0,1)
for c in self.cutter:
c.SetPickable(False)
## 1. Use a render window with alpha bits (as initial value is 0 (false)):
#self.renderWindow.SetAlphaBitPlanes(True);
## 2. Force to not pick a framebuffer with a multisample buffer
## (as initial value is 8):
#self.renderWindow.SetMultiSamples(0);
## 3. Choose to use depth peeling (if supported) (initial value is 0 (false)):
#self.renderer.SetUseDepthPeeling(True);
## 4. Set depth peeling parameters
## - Set the maximum number of rendering passes (initial value is 4):
#self.renderer.SetMaximumNumberOfPeels(100);
## - Set the occlusion ratio (initial value is 0.0, exact image):
#self.renderer.SetOcclusionRatio(0.0);
for i, g in self.dlg.extractor.meshes.items():
logger.debug( " - showing object with label = {}".format(i) )
mapper = vtkPolyDataMapper()
mapper.SetInput(g)
actor = vtkActor()
actor.SetMapper(mapper)
self.qvtk.registerObject(actor)
self.objects.append(actor)
if self.colorTable:
c = self.colorTable[i]
c = QColor.fromRgba(c)
actor.GetProperty().SetColor(c.red()/255.0, c.green()/255.0, c.blue()/255.0)
self.qvtk.renderer.AddActor(actor)
self.qvtk.update()
class OverviewScene(QWidget):
#emitted when slice changes
# int -- slice number
# int -- axis number
changedSlice = pyqtSignal(int, int)
def resizeEvent(self, event):
QWidget.resizeEvent(self, event)
self.qvtk.update() #needed on OS X
def slicingCallback(self, obj, event):
def maybeUpdateSlice(old):
num = obj.coordinate[obj.lastChangedAxis]
axis = obj.lastChangedAxis
if old == (num, axis):
self.changedSlice.emit(num, axis)
#when dragging the slice, wait for some milliseconds
#to see whether the user is dragging on before
#sending a signal
num = obj.coordinate[obj.lastChangedAxis]
axis = obj.lastChangedAxis
QTimer.singleShot(50, partial(maybeUpdateSlice, (num, axis)))
def ShowPlaneWidget(self, axis, show):
self.planes.ShowPlane(axis, show)
self.qvtk.update()
def TogglePlaneWidgetX(self):
self.planes.TogglePlaneWidget(0)
self.qvtk.update()
def TogglePlaneWidgetY(self):
self.planes.TogglePlaneWidget(1)
self.qvtk.update()
def TogglePlaneWidgetZ(self):
self.planes.TogglePlaneWidget(2)
self.qvtk.update()
@property
def dataShape(self):
return self._dataShape
@dataShape.setter
def dataShape(self, shape):
if shape == self._dataShape:
return
self._dataShape = shape
if self.planes:
self.planes.RemoveObserver(self.coordEventObserver)
self.qvtk.renderer.RemoveViewProp(self.planes)
del self.planes
self.planes = SlicingPlanesWidget(shape, self.qvtk.GetInteractor())
#self.planes.SetInteractor(self.qvtk.GetInteractor())
self.coordEventObserver = self.planes.AddObserver(
"CoordinatesEvent", self.slicingCallback)
self.planes.SetCoordinate([0, 0, 0])
self.planes.SetPickable(False)
## Add RGB arrow axes
if self.axes:
self.qvtk.renderer.RemoveActor(self.axes)
del self.axes
self.axes = vtkAxesActor()
self.axes.AxisLabelsOff()
self.axes.SetTotalLength(0.5 * shape[0], 0.5 * shape[1],
0.5 * shape[2])
self.axes.SetShaftTypeToCylinder()
self.qvtk.renderer.AddActor(self.axes)
self.qvtk.renderer.AddActor(self.planes)
self.qvtk.renderer.ResetCamera()
#for some reason, we have to do this afterwards!
self.planes.togglePlanesOn()
def __init__(self, parent=None):
super(OverviewScene, self).__init__(parent)
self.coordEventObserver = None
self.colorTable = None
self.anaglyph = False
self.sceneItems = []
self.cutter = 3 * [None]
self.objects = []
self.planes = None
self.axes = None
self._dataShape = None
layout = QVBoxLayout()
layout.setMargin(0)
layout.setSpacing(0)
self.qvtk = QVTKOpenGLWidget()
layout.addWidget(self.qvtk)
self.setLayout(layout)
self.qvtk.init()
hbox = QHBoxLayout(None)
hbox.setMargin(0)
hbox.setSpacing(5)
hbox.setContentsMargins(5, 3, 5, 3)
def delete_gl_widget():
# This is called just before the app quits to avoid this error during shutdown:
# QGLContext::makeCurrent: Cannot make invalid context current
self.qvtk.setParent(None)
del self.qvtk
QApplication.instance().aboutToQuit.connect(delete_gl_widget)
b1 = QToolButton()
b1.setIcon(QIcon(':icons/icons/x-axis.png'))
b1.setToolTip("Show x slicing plane")
b1.setCheckable(True)
b1.setChecked(True)
b2 = QToolButton()
b2.setIcon(QIcon(':icons/icons/y-axis.png'))
b2.setToolTip("Show y slicing plane")
b2.setCheckable(True)
b2.setChecked(True)
b3 = QToolButton()
b3.setIcon(QIcon(':icons/icons/z-axis.png'))
b3.setToolTip("Show z slicing plane")
b3.setCheckable(True)
b3.setChecked(True)
bAnaglyph = QToolButton()
bAnaglyph.setIcon(QIcon(':icons/icons/3d_glasses.png'))
bAnaglyph.setToolTip("Show in anaglyph 3D")
bAnaglyph.setCheckable(True)
bAnaglyph.setChecked(False)
self.bUndock = QToolButton()
self.bUndock.setIcon(QIcon(":/icons/icons/arrow_up.png"))
self.bUndock.setToolTip("Dock/undock this view")
'''
bCutter = QToolButton()
bCutter.setIcon(QIcon(':icons/icons/edit-cut.png'))
bCutter.setCheckable(True); bCutter.setChecked(False)
self.bCutter = bCutter
bExportMesh = QToolButton()
bExportMesh.setIcon(QIcon(':icons/icons/document-save-as.png'))
'''
hbox.addWidget(b1)
hbox.addWidget(b2)
hbox.addWidget(b3)
hbox.addWidget(bAnaglyph)
hbox.addWidget(self.bUndock)
#hbox.addWidget(bCutter)
hbox.addStretch()
#hbox.addWidget(bExportMesh)
layout.addLayout(hbox)
self.connect(b1, SIGNAL("clicked()"), self.TogglePlaneWidgetX)
self.connect(b2, SIGNAL("clicked()"), self.TogglePlaneWidgetY)
self.connect(b3, SIGNAL("clicked()"), self.TogglePlaneWidgetZ)
self.connect(bAnaglyph, SIGNAL("clicked()"), self.ToggleAnaglyph3D)
#self.connect(bExportMesh, SIGNAL("clicked()"), self.exportMesh)
#bCutter.toggled.connect(self.useCutterToggled)
self.connect(self.qvtk, SIGNAL("objectPicked"), self.__onObjectPicked)
def layerContextMenu(layer, menu):
self.layerContextMenu(layer, menu)
Event.register("layerContextMenuRequested", layerContextMenu)
def layerContextMenu(self, layer, menu):
if isinstance(layer, ColortableLayer):
def show3D():
data = layer._datasources[0].request(
(slice(0, 1, None), slice(None, None,
None), slice(None, None, None),
slice(None, None,
None), slice(0, 1, None))).wait()[0, :, :, :, 0]
self.SetColorTable(layer._colorTable)
self.DisplayObjectMeshes(
data) #, suppressLabels=(), smooth=True):
show3dAction = QAction("Show in 3D Overview", menu)
show3dAction.triggered.connect(show3D)
menu.addAction(show3dAction)
@property
def useCutter(self):
return False
#return self.bCutter.isChecked()
def useCutterToggled(self):
self.__updateCutter()
if self.useCutter:
for i in range(3):
self.qvtk.renderer.AddActor(self.cutter[i])
else:
for i in range(3):
self.qvtk.renderer.RemoveActor(self.cutter[i])
self.qvtk.update()
def exportMesh(self):
filename = QFileDialog.getSaveFileName(self, "Save Meshes As")
self.qvtk.actors.InitTraversal()
for i in range(self.qvtk.actors.GetNumberOfItems()):
p = self.qvtk.actors.GetNextProp()
if p.GetPickable() and self.qvtk.actors.IsItemPresent(p):
vtpFilename = "%s%02d.vtp" % (filename, i)
objFilename = "%s%02d.obj" % (filename, i)
logger.info("writing VTP file '%s'" % vtpFilename)
d = p.GetMapper().GetInput()
w = vtkPolyDataWriter()
w.SetFileTypeToASCII()
w.SetInput(d)
w.SetFileName("%s%02d.vtp" % (filename, i))
w.Write()
logger.info("converting to OBJ file '%s'" % objFilename)
convertVTPtoOBJ(vtpFilename, objFilename)
#renWin = vtkRenderWindow()
#ren = vtkRenderer()
#renWin.AddRenderer(ren)
#ren.AddActor(p)
#exporter = vtkOBJExporter()
#exporter.SetInput(renWin)
#exporter.SetFilePrefix("%s%02d" % (filename, i))
#exporter.Update()
def __onObjectPicked(self, coor):
self.ChangeSlice(coor[0], 0)
self.ChangeSlice(coor[1], 1)
self.ChangeSlice(coor[2], 2)
def __onLeftButtonReleased(self):
logger.debug("CLICK")
def ToggleAnaglyph3D(self):
self.anaglyph = not self.anaglyph
if self.anaglyph:
logger.debug('setting stero mode ON')
self.qvtk.renderWindow.StereoRenderOn()
self.qvtk.renderWindow.SetStereoTypeToAnaglyph()
else:
logger.debug('setting stero mode OFF')
self.qvtk.renderWindow.StereoRenderOff()
self.qvtk.update()
def __updateCutter(self):
if (self.useCutter):
#print "Update cutter"
for i in range(3):
if self.cutter[i]:
self.cutter[i].SetPlane(self.planes.Plane(i))
else:
pass
#print "Do NOT update cutter"
def ChangeSlice(self, num, axis):
c = copy.copy(self.planes.coordinate)
c[axis] = num
self.planes.SetCoordinate(c)
# set the current point as the camera's focal point
cam = self.qvtk.renderer.GetActiveCamera()
cam.SetFocalPoint(*c) #rotate around this point
cam.Modified()
self.__updateCutter()
self.qvtk.update()
def display(self, axis):
self.qvtk.update()
def redisplay(self):
self.qvtk.update()
def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
logger.debug(
"OverviewScene::DisplayObjectMeshes {}".format(suppressLabels))
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
def SetColorTable(self, table):
self.colorTable = table
def onObjectMeshesComputed(self):
self.dlg.accept()
logger.debug("*** Preparing 3D view ***")
#Clean up possible previous 3D displays
for c in self.cutter:
if c: self.qvtk.renderer.RemoveActor(c)
for a in self.objects:
self.qvtk.renderer.RemoveActor(a)
self.polygonAppender = vtkAppendPolyData()
for g in self.dlg.extractor.meshes.values():
self.polygonAppender.AddInput(g)
self.cutter[0] = Outliner(self.polygonAppender.GetOutput())
self.cutter[0].GetOutlineProperty().SetColor(1, 0, 0)
self.cutter[1] = Outliner(self.polygonAppender.GetOutput())
self.cutter[1].GetOutlineProperty().SetColor(0, 1, 0)
self.cutter[2] = Outliner(self.polygonAppender.GetOutput())
self.cutter[2].GetOutlineProperty().SetColor(0, 0, 1)
for c in self.cutter:
c.SetPickable(False)
## 1. Use a render window with alpha bits (as initial value is 0 (false)):
#self.renderWindow.SetAlphaBitPlanes(True);
## 2. Force to not pick a framebuffer with a multisample buffer
## (as initial value is 8):
#self.renderWindow.SetMultiSamples(0);
## 3. Choose to use depth peeling (if supported) (initial value is 0 (false)):
#self.renderer.SetUseDepthPeeling(True);
## 4. Set depth peeling parameters
## - Set the maximum number of rendering passes (initial value is 4):
#self.renderer.SetMaximumNumberOfPeels(100);
## - Set the occlusion ratio (initial value is 0.0, exact image):
#self.renderer.SetOcclusionRatio(0.0);
for i, g in self.dlg.extractor.meshes.items():
logger.debug(" - showing object with label = {}".format(i))
mapper = vtkPolyDataMapper()
mapper.SetInput(g)
actor = vtkActor()
actor.SetMapper(mapper)
self.qvtk.registerObject(actor)
self.objects.append(actor)
if self.colorTable:
c = self.colorTable[i]
c = QColor.fromRgba(c)
actor.GetProperty().SetColor(c.red() / 255.0,
c.green() / 255.0,
c.blue() / 255.0)
self.qvtk.renderer.AddActor(actor)
self.qvtk.update()
def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
print "OverviewScene::DisplayObjectMeshes", suppressLabels
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
def DisplayObjectMeshes(self, v, suppressLabels=(), smooth=True):
print "OverviewScene::DisplayObjectMeshes", suppressLabels
self.dlg = MeshExtractorDialog(self)
self.dlg.finished.connect(self.onObjectMeshesComputed)
self.dlg.show()
self.dlg.run(v, suppressLabels, smooth)
