osg::ref_ptr<osg::MatrixTransform> transform;
osg::ref_ptr<SGPrecipitation> precipitation;
float getPrecipitationAtAltitudeMax(void);
osg::ref_ptr<osg::MatrixTransform> transform;
osg::ref_ptr<SGPrecipitation> precipitation;
float getPrecipitationAtAltitudeMax(void);