Improvements to the handling of coordinate system nodes

src/osgGA/KeySwitchMatrixManipulator.cpp

@@ -61,6 +61,17 @@ void KeySwitchMatrixManipulator::setNode(osg::Node* node)
     }
 }
 
+void KeySwitchMatrixManipulator::setMinimumDistance(float minimumDistance)
+{
+    _minimumDistance = minimumDistance;
+    for(KeyManipMap::iterator itr=_manips.begin();
+        itr!=_manips.end();
+        ++itr)
+    {
+        itr->second.second->setMinimumDistance(minimumDistance);
+    }
+}
+
 void KeySwitchMatrixManipulator::setCoordinateFrameCallback(CoordinateFrameCallback* cb)
 {
     _coordinateFrameCallback = cb;

src/osgGA/MatrixManipulator.cpp

@@ -7,6 +7,7 @@ using namespace osgGA;
 
 MatrixManipulator::MatrixManipulator()
 {
+    _minimumDistance = 0.001;
 }
 
 

src/osgGA/TerrainManipulator.cpp

@@ -9,7 +9,6 @@ using namespace osgGA;
 TerrainManipulator::TerrainManipulator()
 {
     _rotationMode =ELEVATION_AZIM; 
-    _minimumDistance = 1.0;
     _distance = 1.0;
 
     _thrown = false;