OpenSceneGraph中的窗体模式运行是怎样的

OpenSceneGraph中的窗体模式运行是怎样的，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

1.使用osgViewer::Viewer代替原来的osgProducer::Viewer 2.先熟悉设计模式，比如最常用的Visitor设计模式。要不然看不懂程序不说，而且更写不出程序。 3.窗体模式运行参考Example osgWindows，在这个例子中重点在于：

osg::ref_ptr traits = new osg::GraphicsContext::Traits;traits->x = 640;traits->y = 0;traits->width = 640;traits->height = 480;traits->windowDecoration = true;traits->doubleBuffer = true;traits->sharedContext = 0;osg::ref_ptr gc = osg::GraphicsContext::createGraphicsContext(traits.get());osg::ref_ptr camera = new osg::Camera;camera->setGraphicsContext(gc.get());camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;camera->setDrawBuffer(buffer);camera->setReadBuffer(buffer);// add this slave camra to the viewer, with a shift right of the projection matrixviewer.addSlave(camera.get(), osg::Matrixd::translate(-1.0,0.0,0.0), osg::Matrixd());

另外Example osgkeyboardmouse也提到了另外一种方式：

// create the window to draw to.osg::ref_ptr traits = new osg::GraphicsContext::Traits;traits->x = 200;traits->y = 200;traits->width = 800;traits->height = 600;traits->windowDecoration = true;traits->doubleBuffer = true;traits->sharedContext = 0;osg::ref_ptr gc = osg::GraphicsContext::createGraphicsContext(traits.get());osgViewer::GraphicsWindow* gw = dynamic_cast(gc.get());if (!gw){osg::notify(osg::NOTICE)<<"Error: unable to create graphics window."realize();gw->makeCurrent();// create the view of the scene.osgViewer::SimpleViewer viewer;viewer.setSceneData(loadedModel.get());viewer.setEventQueue(gw->getEventQueue());viewer.getEventQueue()->windowResize(traits->x,traits->y,traits->width,traits->height);

TODO: 1.3DS导入插件还不够完善，需要自己写。 2.更深入的了解OSG的机制。

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