Re: [Plib-devel] Sky code from simgear

[Curtis L. O. <cu...@me...>]

Ben Woodhead writes:
> I was looking though the simgear code, and I was wondering what has to be
> done to just drop the sky code into plib. I haven't seen anything that would
> make me think that this would be a problem as of yet. 
> But its in the todo list, am I missing something.
> Later Ben

A quick perusal of the sky code shows the following potentially
objectionable items:

Steve does not want anything relating to STL or namespaces included
with plib, so the following dependencies would need to be addressed:

    #include <iostream>
    #include <vector>
    #include <string>

<iostream> could probably be fixed by replacing all the cout's with
printf()'s.

<vector> would require writing a custom list class.

<string> could probably be replaced with old style char arrays with
the standard libc functions (strcpy, strlen, etc.)

    #include <simgear/compiler.h>

This one is how we abstract out a lot of compiler dependencies (mostly
to handle the problem incurred by introducing STL usage such as
<vector> and <string>.

   #include <simgear/constants.h>

These could be easily fixed by copying out constants to wherever they
are needed.

   #include <simgear/debug/logstream.hxx>

This could be easily fixed by replacing instances of FG_LOG() with
printf() ... although it could be somewhat tedious.

   #include <simgear/math/fg_random.h>

This just abstracts out rand() vs. random() ...

   #include <simgear/math/point3d.hxx>

Here we would need to replace all usage of Point3D with sgdvec3
(something which I'd eventually like to do throughout the entire
sim/flight/terragear project family.)

   #include <simgear/math/polar3d.hxx>

This is some routines to do polar arithmatic and conversions.

   #include <simgear/misc/fgpath.hxx>

This is the *gear scheme for handling file and directory paths in a
platform independent way.

   #include <simgear/xgl/xgl.h>

This could be gotten rid of ... it's from before we were using ssg and
doing all our own opengl calls ... anyplace you see xgl**** you can
replace it with gl****

Hope this helps,

Curt.
-- 
Curtis Olson   Human Factors Research Lab       Flight Gear Project
Twin Cities    cu...@hf...                cu...@fl...
Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org