Help with a visual effect

**SkripT** · 4th May 2006, 17:33

Hi, I want to know what's the simple way to obain this visual effect: a rectangle (for example) that rotates 180 degrees from the Y axis:

Qt Code:

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Coordinate system                      
                        |Y
                        |
                        |
                        |
                        |_________________ X
                       /
                     /
                   /
                 / Z

Coordinate system                      
                        |Y
                        |
                        |
                        |
                        |_________________ X
                       /
                     /
                   /
                 / Z

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All I want is to emulate the effect of a page (of a book) turning around

I think that I could use openGL but I don't hve much experinece with it, maybe it can be easily achieved with QPainter

Thanks in advance.