Hi Allan,
On Tue, 2005-03-08 at 14:40 +0100, Allan Rasmusson wrote:
> Hi.
> I've encountered a strange behaviour of the (trackball) navigator. When
> attaching a (passive)viewport which fills the entire PassiveWindow
> everything works fine. If using a viewport which only fills the lower
> left quadrant of the window, the behaviour of the navigator gets messed up:
>
> Rotation around the X-axis works fine.
> Rotation around the Z-axis works as if the viewport took up the whole
> window.
> Rotation around the Y-axis is somehow only possible around the center of
> the upper left quadrant of the window.
>
> I'm using a QGlWidget which has (0,0) in the upper left corner. I've
> tried to transform these into (0,0) in the lower right corner, but got
> the same behaviuor.
>
> Do I somehow need to tell the navigator the center of it's coordinate
> system, or is there a special transformation need to do?
The Navigators are designed for local coordinates, i.e. viewport-
relative with (0,0) in the upper left corner. But there is something
stranger going on, just subtracting the upper left viewport corner
didn't give me what I expected. Not sure when I'll have time to get to
it. :(
Dirk
--
Dirk Reiners <[EMAIL PROTECTED]>
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