osg中设置模移动旋转缩放

     osg::ref_ptr<osg::Node>xcModel = osgDB::readNodeFile("Models/www.ive");

    if(xcModel.valid())

    {

        osg::ref_ptr<osg::MatrixTransform> xcTrans = new osg::MatrixTransform;

         xcTrans->addChild(xcModel.get());

        double tH = GetTerrainHeight(m_pMapNode,113.71665,34.0225);

        tH -= 0.0;

        osg::Matrix posMat;

        getEllipseModel()->computeLocalToWorldTransformFromLatLongHeight(osg::DegreesToRadians(34.0225),

                                                                         osg::DegreesToRadians(113.71665),

                                                                         tH,posMat);

        osg::Matrix scaleMat;

        scaleMat.makeScale(0.39,0.6,0.39);

        osg::Matrix rotateMat;

        rotateMat.makeRotate(osg::DegreesToRadians(-3.5),osg::Vec3(0,0,1.0));

        xcTrans->setMatrix(rotateMat*scaleMat*posMat);//这里一定要先旋转再乘缩放再乘移动 否则不会显示在正确的位置

        m_pSceneData->addChild(xcTrans.get());}一定要这样做的原因貌似是osg中的矩阵是从前乘矩阵 下次再研究点滴收获 记录学习osg的心路历程