[vtk-developers] Guidance needed fixing problems doing 64bit compile on Mac OS X

[Sean McBride]

On 2006-10-26 11:40, David Gobbi said:

>It was nice to see you in Atlanta (finally a face to associate with the 
>email address!)

Likewise!!  I hope you are well rested since the conference.

>In vtkXRenderWindowInteractor, as well, InternalCreateTimer() casts an 
>unsigned long (which is the type of XtIntervalId) to an int.  So there 
>is bad stuff going on for all platforms. 

Agreed.

>I've built VTK on several 64-bit systems (Linux-IA64, Linux-x86_64, 
>IRIX64, sparc64) and haven't seen any problems yet, but that's probably 
>just because I've never run into a timer Id large enough.

That's encouraging.  I suspect vtk will work well on 64 bit Leopard once
I get it compiling, and there are only a few compilation problems it seems.

>My vote would be to use a vtkstd::map to store correspondences between 
>ints and the internal timer type.

That is the other solution.  But considering that on all of Carbon,
Cocoa, X, and Win there are bad casts I wonder if changing
vtkTimerStruct's 'int Id' to 'ptrdiff_t Id' would be better.  That way
both 'platformTimerId' and 'timerId' would be the same size and no casts
nor maps would be needed.

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada