Changeset 9896 for OpenSceneGraph/trunk/src/osgGA/TrackballManipulator.cpp

Timestamp:

03/11/09 11:50:03 (4 years ago)

Author:

robert

Message:

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

Files:

• OpenSceneGraph/trunk/src/osgGA/TrackballManipulator.cpp (modified) (3 diffs)

OpenSceneGraph/trunk/src/osgGA/TrackballManipulator.cpp

@@ -15 +15 @@
     _distance = 1.0f;
     _trackballSize = 0.8f;
+    _zoomDelta = 0.1f;
 }
 
@@ -246 +247 @@
 bool TrackballManipulator::calcMovement()
 {
-    // mosue scroll is only a single event
+    // mouse scroll is only a single event
     if (_ga_t0.get()==NULL) return false;
 
@@ -255 +256 @@
     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;
     }