[PyOpenGL-Users] couple of queries

[Prashant S. <ani...@ya...>]

Hi,

I am no expert in openGL and need to know about couple of questions using pyOpenGL and large set of 3d geometrical data.

1. Which is better (VBO or display list) when you have to show large number of 3d geometrical objects in terms of efficiency and smooth viewport navigation?

2. Method for picking (large number of 3d geometrical objects)
    a) color based (it'll work only when you draw each objects in wireframe mode and gives unique color to each object. AFAIK)
    b)Default Selection Mode GL rendering(I am sure it'll be slow)
    c) Any other?
    
3. If you do have a professional graphic card then performance will be increased using pyOpenGL or no performance gain?

4. Examples for viewport navigation like 3d commercial applications. 
    a) arcball roration
    b) zoom
    c) pan
    
I did couple of test by loading almost 100 mb of data(.obj format) using display list and so far viewport navigation is satisfactory.
The code that has been used to load the data is slightly modified version of this:
http://www.pygame.org/wiki/OBJFileLoader?parent=CookBook

Regards
    
Prashant     


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