I have several objects, obejcts overlay each other ( <eye>---> |  | ), each object has shader.
Is there a way to modify color of nearest object to eye like a function of color of second object?

Does jpct ae have some built-in features to handle large open worlds?
Or i need to do all by myself? I mean things like splliting world into chunks, dynamically load/unload unneeded models etc?

I have some textured object and image. I need to project this image on object.
Also i have
"rayStart" - vector3, the point i'm looking from.
"rayEnd" - vector3, the point i'm looking at.
"rayUp" - vector3, which defines rotation of image

And i cant figure out how to write vert and frag shaders, and looking for help to get this working. I was trynig make some use of tutorial from ozone3d.net, but stuck at the very beginning with "TexGenMatrix"