我可以得到osgViewer::Viewer，该怎么生成或得到frusum的Polytope？

JingTianWen

如题？？？

JingTianWen

或者算出一个BoundingBox与视景体的关系？

JingTianWen

1.         auto camera = viewer->getCamera();
   
2. 
   
3.         auto vm = camera->getViewMatrix();
   
4.         auto render = dynamic_cast<osgViewer::Renderer*>(camera->getRenderer());
   
5.         auto cullVisitor = render->getSceneView(0)->getCullVisitor();
   
6.         auto &cullingSet = cullVisitor->getCurrentCullingSet();
   
7.         if (!&cullingSet) return;
   
8.        
   
9.         auto frustum = cullingSet.getFrustum();
   
10.         frustum.transform(osg::Matrix::inverse(vm));
    

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