这个相对比较简单：

void COSGObject::FlyTo(double lon, double lat, double hei)
{theApp.bNeedModify = TRUE;while(!theApp.bCanModify)Sleep(1);em->setViewpoint(osgEarth::Viewpoint("0",lon, lat, 0, 0, -45, hei), 2);theApp.bNeedModify = FALSE;
}

运行效果如下：