creating an image

[David Gobbi]

Hi Tim,

There is a vtkImageImport class, it didn't make it into VTK 2.4
but it is in the nightlies.

It allows the vtk imaging pipeline to use a block of C++ memory 
'in place,' i.e. it simply uses a C++ pointer as the source of
the imaging pipeline.

http://vtk.scorec.rpi.edu/Nightly/Doc/manhtml/vtkImageImport.html

 - David

P.S. Thanks for the support on the vtkGeneralTransform issue.
     I've prodded the Kitware folks a couple times about this,
     but have never received a reply.

--
  David Gobbi, MSc                    dgobbi at irus.rri.on.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Thu, 16 Dec 1999, Tim Hutton wrote:

> Quick question, how do you create a new image now? I want something very
> similar to the code on p450 of the book, but updated for vtk2.4
> (vtkImageRegion no longer exists). Everything I'm trying makes my code
> crash, presumably because things aren't being allocated properly.
> 
> Here's an example of what I've been trying:
> 
> 	vtkImageCache *im = (vtkImageCache*)vtkImageCache::New();
> 
> 	im->SetWholeExtent(0,100,0,100,0,0);
> 	im->SetUpdateExtent(0,100,0,100,0,0);
> 
> 	int x,y;
> 	for(x=0;x<100;x++)
> 	{
> 		for(y=0;y<100;y++)
> 		{
> 			*(float*)(im->GetData()->GetScalarPointer(x,y,0)) = 0.0F;
> 		}
> 	}
> 
> 	return im;
> 
> Crashes most reliably.
> 
> Cheers,
> 
> Tim.
> ---------------------------------------------------------------------------
> Tim Hutton, Research Assistant            Email: T.Hutton at eastman.ucl.ac.uk
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