newcfd via vtkusers
2018-11-30 05:12:05 UTC
I have the following code to draw isosurface. No problem when this func is
called by the first time.
However, two isosurfaces show up when this func is called with a different
value by the second time.
The first isosurface is not replaced by the second one although I am using
the same actor. What is
wrong?
void MyApp::redraw( const double value )
{
vtkStructuredGrid * mesh =...
vtkSmartPointer<vtkContourFilter> filter =
vtkSmartPointer<vtkContourFilter>::New();
filter->SetInputData( mesh );
filter->SetNumberOfContours( 1 );
filter->Setvalue( 0, value ); // value is passed in
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapSphere->SetInputConnection( filter->GetOutputPort() );
mapSphere->SetScalarRange(0.0, 1.0);
if ( m_pActor == nullptr )
{
m_pActor = vtkActor::New();
m_pActor->SetMapper( mapper );
}
renderer->AddActor( m_pActor );
renderer->SetBackground(1,1,1); // Background color white
renderWindow->Render();
}
--
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called by the first time.
However, two isosurfaces show up when this func is called with a different
value by the second time.
The first isosurface is not replaced by the second one although I am using
the same actor. What is
wrong?
void MyApp::redraw( const double value )
{
vtkStructuredGrid * mesh =...
vtkSmartPointer<vtkContourFilter> filter =
vtkSmartPointer<vtkContourFilter>::New();
filter->SetInputData( mesh );
filter->SetNumberOfContours( 1 );
filter->Setvalue( 0, value ); // value is passed in
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapSphere->SetInputConnection( filter->GetOutputPort() );
mapSphere->SetScalarRange(0.0, 1.0);
if ( m_pActor == nullptr )
{
m_pActor = vtkActor::New();
m_pActor->SetMapper( mapper );
}
renderer->AddActor( m_pActor );
renderer->SetBackground(1,1,1); // Background color white
renderWindow->Render();
}
--
Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html
_______________________________________________
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Search the list archives at: http://markmail.org/search/?q=vtkusers
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