[vtkusers] Saving a PNG images instead of opening a window

[Matthieu Dorier]

Hello, 


I'm new to VTK and I have inherited a visualization code that ends up opening a window to produce its result (I put part of this code below). 
I'd like to change it so it doesn't open a window but saves the result in a PNG image instead. How can I do that? 


Other question: I know VTK is used by VisIt and ParaView to perform parallel visualization. Does VTK itself supports parallel rendering or is the "parallel" aspect brought by these software? (In other words if I want to do visualization in parallel, can I keep using VTK only or do I have to learn another software?) 


Thank you, 


Matthieu Dorier 



vtkUnstructuredGrid *data = vtkUnstructuredGrid::New(); 
// here some code filling the data object 
// ... 


vtkDataSetMapper *mapper = vtkDataSetMapper::New(); 
mapper->SetInput(data); 
mapper->SetScalarRange(scalar_min, scalar_max); 


// init actor 
vtkActor *actor = vtkActor::New(); 
actor->SetMapper(mapper); 


// init renderer 
vtkRenderer *renderer = vtkRenderer::New(); 
renderer->AddActor(actor); 
renderer->SetBackground(0.1, 0.2, 0.4); 


// init window 
vtkRenderWindow *window = vtkRenderWindow::New(); 
window->AddRenderer(renderer); 
window->SetSize(512, 512); 


// init window interaction and run the window 
vtkRenderWindowInteractor *interactor = vtkRenderWindowInteractor::New(); 
interactor->SetRenderWindow(window); 
interactor->Initialize(); 
interactor->Start(); 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20120910/5b9a96fc/attachment.htm>