Hello Johannes,
Schaefer Johannes wrote:
> thank your for your help. I didn't kown that calcFaceNormals and
> calcVertexNormals do the same (but in a different way). Using only one
> function the programm doesn't crashs anymore.
> But the problem with the incorrect visualisation is still alive. The problem
> is, when i move the mouse over the QT-OpenSG-Widget the object flickers (
> http://img14.imageshack.us/img14/7654/wrongnormals.png ). If i don't move the
> mouse every thing is fine. I can't explain me the connection between the
> mouse movement and the flickering (maybe caused by a wrong calculation of the
> normals).
hm, strange, offhand I don't have a good idea what might cause that, but
perhaps we can narrow it down a little. Here are a few things you might
want to check:
- is double buffering enabled?
- what happens if you replace your model with another one or just a
sphere geometry?
- does it happen if you only move the mouse or do you hold a button -
does that move the model?
- what happens in the "mouse move" callback (sorry don't the proper Qt
name), does it cause redraws?
- does it flicker if you have the model rotate around e.g. the y-axis
(I'm wondering if the flicker is part of drawing the model and the mouse
movement just causes redraws while when the mouse is away from the
window simply no redraw happens and thus it does not flicker?)
Cheers,
Carsten
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