[Plib-users] gluUnProject help!

[Tinoshi K. <ti...@li...>]

Hello everybody!

Do you know how to use the gluUnProject with PLIB??? I need to do something 
like Sim City, so I have a terrain (a scenegraph) built using PLIB, and I 
need to put objects over it clicking with mouse! I'm trying to 
gluUnProject(x,y,0.0,...) and gluUnProject(x,y,1.0,...), and I create a 
sgLineSegment3 to connect the two points. Then I'd like to ssgLOS() this 
line with the scenegraph... but I'm going crazy!!! Do you know a easier way 
to do something like that??? Thanks!!!