[vtkusers] About contour VTK C++

[Hans van Piggelen]

You can use vtkGeometryFilter, followed by a vtkPolyDataMapper, add it to an vtkActor and display it in the renderer:

vtkGeometryFilter *vGeomFilter = vtkGeometryFilter::New();vGeomFilter->SetInput( pl3d->GetOutput() );vGeomFilter->Update();vtkPolyDataMapper *vContourMapper = vtkPolyDataMapper::New();vContourMapper->SetInput( vGeomFilter->GetOutput() );vContourMapper->ScalarVisibilityOff();

vtkActor *vContourActor = vtkActor::New();vContourActor->SetMapper( vContourMapper );vContourActor->GetProperty()->SetColor(1,1,1); // whitevContourActor->GetProperty()->SetOpacity(0.7); // somewhat transparent

render->AddActor( vContourActor );

Or something similar of course.

From: zgut at itc.pw.edu.pl
To: vtkusers at vtk.org
Date: Fri, 9 May 2008 10:38:08 +0200
Subject: [vtkusers] About contour VTK C++










Hi
I am new user in VTK so I have problem to 
solve.
I am using unstructured grid data:
 
 vtkUnstructuredGridReader *pl3d = 
vtkUnstructuredGridReader::New();
 pl3d->SetFileName(VTK_DATA_ROOT 
"der.vtk");
 pl3d->SetScalarsName("scalars");
 pl3d->Update();
 
It's OK.
 
But I would like to show only contour this 
object (outside wall-cell). 
 
Regards
 
Antoni
zgut at itc.pw.edu.pl


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