design question

[Chris Forone]

hello group,

whats a good design for a loader of different grafic-files. have the
loader-class (fstream) and a texture-class (internal format/RGBA, always
the same). now i want different grafic-files (.bmp, .pcx, other very
simple gfx) loaded for the texture-class.

is there a "filter" design approach?
should i give some functor object for each gfx-format, that acts on the
pic-data?
is it best done via a class hirarchy?

thanks a lot & hand, chris

 

[Chris Forone]

There probably is.


This looks like a good fit for the 'comp.software.patterns' or the
'comp.programming' newsgroup, or even 'comp.object'. I couldn't find
anything specific for C++ in your inquiry. Admittedly, you have the
word "functor" there, which is somewhat specific to the language feature
related to overloading of the operator(), but I don't yet see the point
of using operator() there. I can just as well be a member function
(method). I don't insist you post to those newsgroups, just consider it.

V

Thanx, chris