PySide/Examples — pull request #8 by hogbait (2013-04-28 06:34:18+00:00)
Title: hellogl.py uses a left-handed coordinate space

The current implementation reverses the direction of the y-axis, resulting in a left-handed coordinate space. This causes some weird behavior with the rotation sliders, and does not serve as a good example for other projects.

The proposed fix is to flip the y-axis back to normal, and to draw the polygon vertices in the standard, counter-clockwise order.