pipixiaodan的专栏

osgUtil::LineSegmentIntersector::Intersections Intersection数组 osgUtil::LineSegmentIntersector::Intersection computeIntersections(x,y,intersections) intersections得到所有相交的点 push_back()加进数组 pop_back()弹出数组

//双面光照     osg::StateSet* state = pGeom->getOrCreateStateSet();     osg::LightModel* plm= new osg::LightModel;     plm->setTwoSided(true);     state->setAttributeAndModes(plm,osg::StateAttribute::ON);

osg::LineWidth* lw = new osg::LineWidth( 3.f );   state->setAttribute( lw );

vector::iterator s=find(array.begin(),array.end(),50);第一个参数是array的起始地址，第二个参数是array的结束地址，第三个参数是需要查找的值       if( s !=array.end())//找到     cout       else cout