[vtkusers] [NEWBIE] shaded background etc

[Andrew Cunningham]

Hi,
I am a new VTK user - porting my own OpenGL based C++ scene graph to VTK to take advantage of the many powerful visualization capabilities. Unfortunately I have to keep the same 'look and feel' rather than starting with a clean slate and I am stumbling on a few things that I can't find answers to after searching MarkMail - I am trying to avoid trial-and-error!

- Our 3D window has a shaded background (done through openGL). A search for "shaded background" showed only 1 unanswered post on this topic in 2002 and it involved modifying a core VTK class using similar OGL commands. I can't see anyway to do this easily using VTK

- Attribute inheritance. I took a lot of advantage of "attribute inheritance" in my scene graph to control rendering. VTK does not seem to have this concept unlike most scene graphs. How do people deal with this?

- "Sticky small axes in lower left corner". I have small XYZ axes in the lower left corner that follow the rotations of the camera view matrix. This has to be easy. In my scene graph I did this through a separate glviewport in the window, but in VTK?


Thanks 
Andrew