Don't hardcode the eye in clip planes.
Don't hardcode the eye in clip planes.

Doesn't matter for imgvis, but we have a dynamic camera location
now technically, and we should use it instead of trying to
duplicate it.

git-svn-id: 83c4c97093aeea62ac982fbfd516bf9db27f5c99@1256 c36c8488-0289-0348-9b64-b301f74bd9a7

BlueBrain/Tuvok,BlueBrain/Tuvok,BlueBrain/Tuvok