[Insight-developers] PixelTraits for Vector

Fri, 4 Jan 2002 17:00:12 -0500 (EST)

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.
  Send mail to mime@docserver.cac.washington.edu for more info.

---1463811583-1208684618-1010181359=:29963
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-ID: <Pine.LNX.4.21.0201041656031.29963@darkstar.kitware.com>

Hello, all:

I have experimented a bit with MSVC in an effort to solve Lydia's problem
with the PixelTraits for a Vector pixel type.  There is a solution that
does not require all possible specializations of itk::Vector to have pixel
traits defined.  A standalone example demonstrating the solution is
attached.  It is valid C++, and works on all of our supported compilers.  
It does not use partial specialization. The interface to the PixelTraits
class for a particular pixel type will remain unchanged if this solution
is used in ITK.  It is also easy to add new templated pixel types without
much trouble.

Thoughts?
-Brad

---1463811583-1208684618-1010181359=:29963
Content-Type: exts="c/x-unknown; name="traits1.cxx"
Content-Transfer-Encoding: BASE64
Content-ID: <Pine.LNX.4.21.0201041700120.29963@darkstar.kitware.com>
Content-Description: 
Content-Disposition: attachment; filename="traits1.cxx"
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---1463811583-1208684618-1010181359=:29963--