[sgl-dev] SGL and TuxFleet

[Alexander R. <a_r...@in...>]

Hi,

I am maintainer of tuxfleet.sourceforge.net

TuxFleet is a free GPLd Space Fight Simulator in 3D.

TuxFleet currently uses plib-ssg (Simple Scene Graph) for 3D rendering,
but I have abstracted calls to plib-ssg in a class FleetScene, so I can
optionally use other 3D renderers/scenegraphs like yours and look
whichever is better etc.

So, I'd like to try to use your SGL as an alternate scenegraph.
To do that, I only have to modify class FleetScene - actually there are
two implementations of FleetScene, one FleetSceneSSG (for plib-ssg) and
the other FleetScene3dtk (based on lib3dtk, not fully working yet).

I had a look at the examples in 'testsgl', especially at testLoaders,
and I wrote a class FleetSceneSGL to implement it (see files in
attachment).
These files are only a quick 'draft', maybe you could do it better?

If you'd like my game to be able to use your scenegraph, please download
the TuxFleet source and have a look at the files
	fleet_scene*

There you'll find the implementations of FleetSceneSSG and
FleetScene3dtk.
With your knowledge of SGL, it should be easier for you to implement
FleetSceneSGL than me.

If not, I could also need some more examples in testsgl.
I need an example that loads two or three different .obj-models from
disk, and displays them rotating/moving somehow, with an also moving
camera.
The 'testLoaders' example misses how to handle more than one object, and
it also misses how to set position/rotating of those objects.
With such an example (as few lines of code as possible ;-) ) it would be
easier to implement FleetSceneSGL for me.


But I've got some question and noticed a few things:

* no documentation?

* the draft of FleetSceneSGL compiles somehow (but not fully) if I don't
set compiler-options, but if I use
  -Wall -W -g -pedantic   -Wno-unused -Wtraditional -Wpointer-arith
-Wconversion -Wstrict-prototypes
gcc get's mad with the following errors (see attachment)

* I had a short look at the sgl-source, what are the other loader
file-formats?
What is scm,xan,cmb filetypes?

* do you know of good,free-to-use 3d modelling/tools,file format
converters or 3d editors for windows or unix?
I have found no 3D modeller I could handle (or pay for), do you know a
easy-to-use thing for a modelling idiot like me?
I need especially a 3d modeller/tool to wrap textures around meshes - I
completely failed to do that in my life :-(
I am also searching for converters, especially to convert 3do (Jedi
Knight models) to 3ds,obj,dxf (I can only convert the meshes, but no
textures)

* when compiling (on redhat 6.2) I get the following warnings:
/vast1/source/new/sgl/sgl/sglTraversal.hpp: In method `void
sglTraversalState<fl
oat>::setSortOrder<float>(const class
vector<sglStatelet::StateEnum,__default_al
loc_template<true,0> > &)':
/vast1/source/new/sgl/sgl/sglTraversal.hpp:253:   instantiated from
`sglTraversa
lState<float>::sglTraversalState<float>()'
fleet_scene_sgl.cxx:96:   instantiated from here
/vast1/source/new/sgl/sgl/sglTraversal.hpp:263: warning: initialization
to `sglS
tatelet::StateEnum *' from `const sglStatelet::StateEnum *' discards
const


Hope to hear from you


Alex

PS: on my normal system, I've installed gcc/libstdc of Rehhat6.2 - but
he keeps saying:
Linking bin/platform.mylin20/sglfly.exe
lib/platform.mylin20/libsgl.so: undefined reference to
`streambuf::seekpos(long, int)'
lib/platform.mylin20/libsgl.so: undefined reference to
`streambuf::seekoff(long, ios::seek_dir, int)'
lib/platform.mylin20/libsgl.so: undefined reference to
`streambuf::sys_seek(long, ios::seek_dir)'
collect2: ld returned 1 exit status

Funnily, the binaries of the examples work on my system - but I can't
link them :-(
Any Ideas? I'm getting mad over it :-(

-- 
                   Alexander Rawass
          Email: ale...@us...
     Project Homepage: http://tuxfleet.sourceforge.net
...but some day you'll be a STAR in somebody else's SKY...