Here the attached source of all my problems :-) :
a) Background Geometry with Sphere radius 1 not really at infinity:
object outside the sphere become black + java crash when texture is
switched off with radius > 1.5
b) DLights not updated when changing View object and Background
desactivated
c) LineArray get shaded in SharedGroup even if no normal is specified
d) some intersection problems: i catch something in the vacuum !
but there is every likelihood this error come from my misunderstanding
of picking mecanism .
I'm a student so every constructive remarks about my code/style are
welcome.
Model.zip
