Update import vtk to only pick the module we use

Author: jourdain

docs/README.md

@@ -146,10 +146,10 @@ import dash_html_components as html
 import dash_vtk
 from dash_vtk.utils import to_volume_state
 
-import vtk
+from vtk.vtkImagingCore import vtkRTAnalyticSource
 
 # Use VTK to get some data
-data_source = vtk.vtkRTAnalyticSource()
+data_source = vtkRTAnalyticSource()
 data_source.Update()  # <= Execute source to produce an output
 dataset = data_source.GetOutput()
 
@@ -745,10 +745,10 @@ import dash_html_components as html
 import dash_vtk
 from dash_vtk.utils import to_volume_state
 
-import vtk
+from vtk.vtkImagingCore import vtkRTAnalyticSource
 
 # Use VTK to get some data
-data_source = vtk.vtkRTAnalyticSource()
+data_source = vtkRTAnalyticSource()
 data_source.Update()  # <= Execute source to produce an output
 dataset = data_source.GetOutput()
 

docs/tutorials/t00_geometry_rendering.py

@@ -4,10 +4,10 @@
 import dash_vtk
 from dash_vtk.utils import to_mesh_state
 
-import vtk
+from vtk.vtkImagingCore import vtkRTAnalyticSource
 
 # Use VTK to get some data
-data_source = vtk.vtkRTAnalyticSource()
+data_source = vtkRTAnalyticSource()
 data_source.Update()  # <= Execute source to produce an output
 dataset = data_source.GetOutput()
 

docs/tutorials/t01_volume_rendering.py

@@ -4,10 +4,10 @@
 import dash_vtk
 from dash_vtk.utils import to_volume_state
 
-import vtk
+from vtk.vtkImagingCore import vtkRTAnalyticSource
 
 # Use VTK to get some data
-data_source = vtk.vtkRTAnalyticSource()
+data_source = vtkRTAnalyticSource()
 data_source.Update()  # <= Execute source to produce an output
 dataset = data_source.GetOutput()
 

docs/tutorials/t06_shared_dataset.py

@@ -4,10 +4,10 @@
 import dash_vtk
 from dash_vtk.utils import to_volume_state
 
-import vtk
+from vtk.vtkImagingCore import vtkRTAnalyticSource
 
 # Use VTK to get some data
-data_source = vtk.vtkRTAnalyticSource()
+data_source = vtkRTAnalyticSource()
 data_source.Update()  # <= Execute source to produce an output
 dataset = data_source.GetOutput()