Added static cast to float to avoid compile error under MSV
Added static cast to float to avoid compile error under MSV


ghub/osg,ntoand/osg,XiaoCC/osg,XiaoCC/osg,XiaoCC/osg,ntoand/osg,omega-hub/osg,koshman86/osg,ghub/osg,koshman86/osg,artoolkit/osg,ntoand/osg,ntoand/osg,koshman86/osg,omega-hub/osg,omega-hub/osg,ghub/osg,omega-hub/osg,koshman86/osg,XiaoCC/osg,artoolkit/osg,artoolkit/osg,ghub/osg,artoolkit/osg,XiaoCC/osg