[Plib-users] Question re PUI sizes & frames

[James F. <fr...@cs...>]

Hi,

I'm making some progress on modifying PUI to work with VR, but have a 
couple more questions.  After a few modifications (such as replacing the 
bitmapped text with GLUT vector fonts), I've got groups containing buttons 
and such that I can move around & rotate at will.  Now I want to add a 
nice frame around a group, but it seems that I have to create the frame 
before creating the objects that go in it.  IOW the code needs to look 
something like

   group = new puGroup (size...)
   frame = new puFrame (x1, y1, x2, y2);
   button1 = new puButton (x, y, label);
   button2 = new puButton (x, y, label);
   group->close ();

The problem is how to know the dimensions for frame before I create at 
least one button, and find its size?

That leads to a larger question: what does PUI use as its internal 
coordinate system?  At some point I'll need to add scaling of the PUI 
coordinate system to the VR one, so that the menus appear at virtual world 
sizes.  I'd rather not do this by trial & error, but I don't understand 
the internal coordinates from the code.

Thanks,
James