FGFS-4.1/OpenSceneGraph
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From Martin Beckett, added get/setScrollWheelZoomDelta() support for controlling the mouse scroll wheel zoom delta.

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This commit is contained in:
Robert Osfield
2009-03-11 10:50:03 +00:00
parent c3810e130b
commit 06ef559d91
2 changed files with 11 additions and 2 deletions
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5
src/osgGA/TrackballManipulator.cpp
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@@ -14,6 +14,7 @@ TrackballManipulator::TrackballManipulator()
_distance = 1.0f;
_trackballSize = 0.8f;
_zoomDelta = 0.1f;
}
@@ -245,7 +246,7 @@ void TrackballManipulator::computePosition(const osg::Vec3& eye,const osg::Vec3&
bool TrackballManipulator::calcMovement()
{
// mosue scroll is only a single event
// mouse scroll is only a single event
if (_ga_t0.get()==NULL) return false;
float dx=0.0f;
@@ -254,7 +255,7 @@ bool TrackballManipulator::calcMovement()
if (_ga_t0->getEventType()==GUIEventAdapter::SCROLL)
{
dy = _ga_t0->getScrollingMotion() == osgGA::GUIEventAdapter::SCROLL_DOWN ? -0.1 : 0.1;
dy = _ga_t0->getScrollingMotion() == osgGA::GUIEventAdapter::SCROLL_UP ? _zoomDelta : -_zoomDelta;
buttonMask=GUIEventAdapter::SCROLL;
}
else