Re: [Plib-users] Selecting with mouse

[David M. <da...@me...>]

Norman Vine writes:

 > If the PPE source is that 'opaque' then a 'refresher' course in 
 > the OpenGL 'way' might help
 > http://fly.cc.fer.hr/~unreal/theredbook/chapter12.html

That's not the issue -- I understand (most of) the OpenGL stuff, but I
find the PPE source very difficult to follow.  No offence is intended
to the authors; my point is just that "read PPE" isn't particularly
helpful advice either to me or to the others who've posted the same
question.

I'd like to make two major points:

1. The lack of a simple objects-under-the-mouse function in SSG is a
   serious gap; i.e. it's a need-to-have, not a want-to-have feature
   for a general-purpose scene-graph API.

2. I'm not assuming that it's Steve's responsibility to fill that gap,
   but would be grateful for more concrete guidance from the plib
   development community as a whole.

Point #1 might not be self-evident to someone like Steve who writes
high-end simulation software that will be used with prebuilt panels
and cockpits, but it's critical for the PC world.  It's useful not
only for operating instruments in a flight or racing simulator, but
also for manipulating objects in a modeller, identifying features in a
3D GIS display, etc. etc. etc.  There's no point making each
application writer recreate this code from scratch.


All the best,


David

-- 
David Megginson, da...@me..., http://www.megginson.com/