oe中的视角加速感觉好奇怪,就仿照谷歌方式去改了. 先看看oe原来的漫游器改变视角的接口: void CameraManipulator::setViewpoint(const Viewpoint& vp, double duration_seconds) { // If the manip is not set up, save the viewpoint for later. if ( !established() ) { _pendingViewpoint = vp; _pendingVi…