Hi, I'm seeing something strange with mouse wheel (SCROLL) events in GUIEventAdapter. My app is a Qt app set up following the osgviewerQt example. I am trying to implement zooming with the mouse where the zoom follows the mouse cursor. In some cases I want to zoom with mouse clicks, and in other cases I want to use the mouse wheel. Zooming was not working correctly when I used the mouse wheel. I noticed that for SCROLL events, the x and y min/max were always -1 / +1, which caused GUIEventAdapter::getX/Ynormalized() to return the wrong values. So, I figured I would just use getX/Y() instead and use inverse viewport matrix to get the normalized device coordinates. But, then I noticed I was still getting inconsistent values for the Y coordinate. For a RELEASE event, the GUIEventAdapter has Y_INCREASING_DOWNWARDS for the y orientation, and getY() returns 0 in the top left corner of the window. For a SCROLL event, it has Y_INCREASING_UPWARDS and getY() returns 0 in the bottom left corner. Why are the two event types inconsistent? Is there some attribute I am forgetting to set somewhere?
I am using OSG 3.0.0 and Qt 4.7. ... Thank you! Cheers, Michael ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49332#49332 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
