Re: [ggt-devel] another potential usability issue from naming

[Allen B. <al...@vr...>]

Unless I am missing something, I would say they are both creational. 
Both methods create a temporary object that is returned by value.  The
only real difference is that in one the thing going in (vec) is smaller
then the thing coming out (Matrix) while the other method takes
something larger in and spits out something smaller.  In every other way
the semantics are the same from what I can tell.

Is there something I am missing?

-Allen

Ben Scott wrote:
> 
> The semantics are different because makeTrans<Matrix>(Vec) is purely
> creational whereas makeTrans<Vec>(Matrix) is a retrieval function.
> makeTrans<Vec>(Matrix) is creational only as a byproduct of the fact that
> the data it needs to return must be in vector form.
> 
> -----
> Ben Scott
> Research Assistant VRAC
> bs...@ia...
> 
> On Wed, 29 May 2002, Kevin Meinert wrote:
> 
> >
> > the semantics of all make functions are that they take input data, and
> > create something.
> >
> > the beauty of it is that you can insert arbitrary data (usually as long as
> > we implement the funcs)
> >
> > > Matrix makeTrans<Matrix>(Vec)
> > > Vec makeTrans<Vec>(Matrix)
> >
> > and even
> > Matrix makeTrans<Matrix>(Matrix)
> >
> > are all ways to get data types from others.  I guess I don't see how this
> > breaks any semantics.  The make functions are still object oriented in the
> > sense that they are factories, or constructors of objects.
> >
> > as soon as you understand this point, they should be usable.
> >
> > does that clear it up?
> >
> >
> > kevin
> >
> >
> > _______________________________________________________________
> >
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> 
> _______________________________________________________________
> 
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-- Allen Bierbaum                         al...@vr...
-- PhD Candidate             txtmsg - 515...@us...
-- VR Juggler Team                       http://www.vrjuggler.org
-- Virtual Reality Applications Lab   http://www.vrac.iastate.edu