[vtkusers] Help: image size!!

[Wu Ruoyun]

Hi

I have a renderWindow to display video and the video (640x480) fits the entire window. The following codes may help you to achieve the same thing. You need to make your renderWindow have a size of 640x480 first.

	videoImageImport = vtkImageImport::New();
	videoImageImport->SetImportVoidPointer( (void*) videoImage );
	videoImageImport->SetWholeExtent( 0, 640-1, 0, 480-1, 0, 0 );
	videoImageImport->SetDataExtentToWholeExtent();
	videoImageImport->SetDataScalarTypeToUnsignedChar();
	videoImageImport->SetNumberOfScalarComponents( 3 );
	videoImageImport->SetDataSpacing( 1, 1, 1 );
	videoImageImport->SetDataOrigin( -640/2, -480/2, 0 );

	videoImageActor = vtkImageActor::New();
	videoImageActor->SetInput(videoImageImport->GetOutput());
	videoRenderer = vtkRenderer::New();
	videoRenderer->AddActor(videoImageActor);

	videoCamera = vtkCamera::New();
	videoCamera->SetPosition( 0, 0, 500 );
	videoCamera->SetClippingRange( 1, 1000 );
	videoCamera->ComputeViewPlaneNormal();
	videoCamera->ParallelProjectionOn();
	videoCamera->SetParallelScale( 480/2 );
	videoRenderer->SetActiveCamera( videoCamera );

Best Wishes!
Ruoyun

-----Original Message-----
From: marisa aurelio [mailto:asiram00 at hotmail.com]
Sent: Tuesday, June 17, 2003 12:07 AM
To: vtkusers at public.kitware.com
Subject: [vtkusers] Help: image size!!


Hi vtkUsers,

I have an image and a renderWindow. I would like that the image would fit 
the entire renderWindow.

I've tried to capture the image size and put the dimensions on the 
dimensions of the renderWindow.

But, the image shrinks propotionate to the to the image size. It seems VTK 
has a default image viewer property, so that all images are viewed in tha 
same manner, independently of their size.

Can anybody help me????? Tell me how to break this rule???

Thanks in advance,
Marisa

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