简述Ogitor加载场景流程

LoadScene：

　　COFSSceneSerializer()->Import(FileName);

　　OgitorsSystem->UpdateProcess(...);

　　　　if not finished

　　　　　　print "Loading x% ..."

　　　　　　update();

　　　　else

　　　　　　print "OK"

　　　　　　update();

COFSSceneSerializer()->Import(FileName):

　　loadmsg = mSystem->Translate("Parsing Scene File");

　　mSystem->UpdateLoadProgress(1, loadmsg);

　　TiXmlNode* node = 0;

　　node = docImport.FirstChild("OGITORSCENE");

　　......

　　do //10% -> 80%, here it is!

　　{ ...

　　}while(element = element->NextSiblingElement());

　　ogRoot->AfterLoadScene();

　　return SCF_OK;

AfterLoadScene():

　　CreateGizmo();

　　mClipboardManager = OGRE_NEW OgitorsClipboardManager();

　　SetEditorTool(TOOL_SELECT); 

　　GetSceneManager()->setVisibilityMask(vismask);

　　Ogre::UTFString loadmsg = mSystem->Translate("Loading scene objects");

　　mSystem->UpdateLoadProgress(80, loadmsg);

　　mRootEditor->load();// OgreSetup Step 7, load third party plugins and libs

　　mRootEditor->loadAllChildren(mPagingEditor != 0);

　　loadmsg = mSystem->Translate("OK!~Rendering...");

　　mSystem->UpdateLoadProgress(100, loadmsg);

　　mSelectionNode = GetSceneManager()->getRootSceneNode()->createChildSceneNode("scbnSELECTION");

　　mSelectionNode->setVisible(true);

　　...

　　setLoadState(LS_LOADED);

　　SetSceneModified(false);

　　return true;

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上面那部分是从以下代码中总结出来的：

//void MainWindow::openScene() --- mainwindowactions.cpp

1、Ogitors::OgitorsRoot *ogRoot = OgitorsRoot::getSingletonPtr();获取mRoot句柄

2、int ret = ogRoot->LoadScene("");

 

//int OgitorsRoot::LoadScene(Ogre::String filename) --- OgitorsRoot.cpp

3、setLoadState(LS_LOADING);

4、Ogre::UTFString msg = mSystem->Translate("Load in progress...");

5、COFSSceneSerializer *defaultserializer = OGRE_NEW COFSSceneSerializer();

　　int ret = defaultserializer->Import(filename);

6、msg = mSystem->Translate("Please load a Scene File...");

7、mSystem->UpdateLoadProgress(-1, msg);

 

//void QtOgitorSystem::UpdateLoadProgress(float percentage, Ogre::UTFString msg) ---qtogitorsystem.cpp

8、if(percentage > 0)
        mRenderViewWidget->setOverlayMessage(QApplication::translate("QtOgitorSystem","Loading") + QString(" %") + QString("%1").arg(percentage) + "\n" + ConvertToQString(msg));
    else
        mRenderViewWidget->setOverlayMessage(ConvertToQString(msg));

 

//void setOverlayMessage(QString msg) --- ogrewidget.hxx

9、void setOverlayMessage(QString msg)
    {
        mOverlayWidget->setMessageString(msg);
        update();
    };

 

//void update(); qwidget.h in Qt SDK

10、void update();

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现在不能理解的是update的作用以及如何与Ogre启动流程结合起来。