Hi team,
I am writing custom camera navigation.
When I look up QGLView for reference, there are a few lines of codes that I
don't understand the logic:
QGLView::mouseMoveEvent(QMouseEvent* e):
if (e->modifiers() == d->panModifiers) {
d->camera->setEye(d->startEye);
d->camera->setCenter(d->startCenter);
d->camera->setUpVector(d->startUpVector);
}
Why it's needed to reset the eye / center / up vector in every frame? As I
tried to remove them from the code, the panning / tilting would become a big
mess. It looks a bit weird to me. Maybe I have missed something?
Thanks.
Best Regards,
Yun-Ta
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