我正在用OSGEarth做一个无人机模拟器。我从来没有使用过OSG，所以我有一些麻烦，以了解相机。我试图移动一个相机到一个特定的位置(lat/lon)与一个特定的滚动，俯仰和偏航在OSG地球。

我需要多个摄像头，所以我使用了一个复合查看器。但我不知道怎么移动特定的摄像机。目前，我有一个与EarthManipulator工作良好。

 class NovaManipulator : publicosgGA::CameraManipulator {
         osg::Matrixd NovaManipulator::getMatrix() const
              //drone_ is only a struct which contains updated infomations
              float roll = drone_->roll(),
              pitch = drone_->pitch(),
              yaw = drone_->yaw();
          auto position = drone_->position();
          osg::Vec3d world_position;
          position.toWorld(world_position);
          cam_view_->setPosition(world_position);
          const osg::Vec3d rollAxis(0.0, 1.0, 0.0);
          const osg::Vec3d pitchAxis(1.0, 0.0, 0.0);
          const osg::Vec3d yawAxis(0.0, 0.0, 1.0);
           //if found this code : 
           // https://stackoverflow.com/questions/32595198/controling-openscenegraph-camera-with-cartesian-coordinates-and-euler-angles
           osg::Quat rotationQuat;
           rotationQuat.makeRotate(
               osg::DegreesToRadians(pitch + 90), pitchAxis,
               osg::DegreesToRadians(roll),          rollAxis,
               osg::DegreesToRadians(yaw),          yawAxis);
          cam_view_->setAttitude(rotationQuat);
          // I don't really understand this also
          auto nodePathList = cam_view_->getParentalNodePaths();
          return osg::computeLocalToWorld(nodePathList[0]);