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在Qt 中整合Ogre [复制链接]

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离线kimtaikee
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只看楼主 倒序阅读 楼主  发表于: 2011-05-22

原帖地址：http://blog.csdn.net/tulun/archive/2010/06/01/5638469.aspx
我用的环境是VS2008+Qt
1，新建一个Qt Application，除了main.cpp文件以外，将其它东西全部删除。
2，添加几个文件如下：
FOgreWidget.h：
复制代码
  1. #include <QWidget>
  3. // 如果为假就返回
  4. #ifndef FALSE_RETURN
  5. #define FALSE_RETURN(h, r) if(!h) return r;
  6. #endif
  7. #ifndef _DEGUG
  8. #define _DEGUG
  9. #endif
  10. #include <QEvent>
  11. #include "Ogre.h"
  12. #include "OgreConfigFile.h"
  14. class FOgreWidget : public QWidget
  15. {
  16. Q_OBJECT
  17. public:
  18. FOgreWidget(QWidget* parent ,QString strInsName);
  19. ~FOgreWidget();
  20. //QSize minimumSizeHint() const;
  21. //QSize sizeHint() const;
  22. protected:
  24. // 事件处理函数
  25. void resizeEvent(QResizeEvent* evt);//窗口可能缩放
  27. void timerEvent(QTimerEvent* evt);//可以设一时钟来更新窗口
  29. void paintEvent(QPaintEvent* evt);//呵，当然得处理了
  31. void keyPressEvent(QKeyEvent* evt);
  32. //void keyReleaseEvent(QKeyEvent* evt);
  34. void mousePressEvent(QMouseEvent* evt) ;
  36. //void mouseReleaseEvent(QMouseEvent* evt);
  37. //void mouseMoveEvent(QMouseEvent* evt);
  39. void wheelEvent(QWheelEvent* evt);
  41. bool LoadPlugin() ;
  42. bool LoadResource() ;
  43. bool CreateSceneManager() ;
  44. bool CreateRenderWindow() ;
  45. bool CreateDefaultCamera() ;
  46. bool SelectRenderSystem() ;
  47. bool CreateScene()  ;
  49. void updateDraw() ;
  50. void CreateLight() ;
  51. Ogre::SceneManager* m_pSceneManager ;
  52. Ogre::RenderWindow* m_pRenderWindow;
  53. Ogre::Camera* m_pDefCamera;    
  54. Ogre::Viewport* m_pDefViewport;  
  55. Ogre::Root* m_pRoot ;    
  56. Ogre::Entity *  m_pMainEnt;  
  57. Ogre::SceneNode*   m_pMainNode;  
  58. Ogre::Light* m_pMainLight;    
  59. public :
  60. bool Initialize() ;
  61. private:
  62. QString  m_strInsName_ ;
  63. };
  64. FOgreWidget.cpp：
  65. #include "FOgreWidget.h"
  66. #include <QKeyEvent>
  67. #include <string>
  68. using namespace std ;
  69. FOgreWidget::FOgreWidget(QWidget* parent,QString strInsName) : QWidget(parent,Qt::WFlags(Qt::MSWindowsOwnDC)),m_strInsName_(strInsName)
  70. {
  71. m_pSceneManager = NULL ;
  72. m_pRenderWindow= NULL ;
  73. m_pDefCamera= NULL ;
  74. m_pDefViewport= NULL ;
  75. m_pRoot = NULL ;
  76. m_pMainEnt= NULL ;
  77. m_pMainNode= NULL ;
  78. m_pMainLight = NULL ;
  79. }
  81. FOgreWidget::~FOgreWidget()
  82. {
  83. // destroy Viewport and RenderWindow
  84. if( m_pDefViewport )
  85. {
  86.   m_pRenderWindow->removeViewport(m_pDefViewport->getZOrder());
  87.   m_pDefViewport = NULL ;
  88. }
  89. Ogre::Root::getSingleton().detachRenderTarget(m_pRenderWindow);
  90. m_pRenderWindow = NULL ;
  91. }
  93. void FOgreWidget::paintEvent(QPaintEvent *evt)
  94. {
  95. Q_UNUSED(evt);  
  96. updateDraw() ;
  97. }
  98. void FOgreWidget::timerEvent(QTimerEvent* evt)
  99. {
  100. Q_UNUSED(evt);
  101. updateDraw() ;
  102. }
  103. void FOgreWidget::resizeEvent(QResizeEvent *evt)
  104. {
  105. QWidget::resizeEvent(evt) ;
  106. }
  107. void FOgreWidget::keyPressEvent(QKeyEvent* evt)
  108. {
  110. QWidget::keyPressEvent(evt) ;
  112. }
  114. void FOgreWidget::mousePressEvent(QMouseEvent* evt)
  115. {
  116. QWidget::mousePressEvent(evt) ;
  117. }
  119. void FOgreWidget::wheelEvent(QWheelEvent* evt)
  120. {
  121. QWidget::wheelEvent(evt) ;
  122. }
  124. bool FOgreWidget::LoadPlugin()
  125. {  
  126. assert(m_pRoot!=NULL) ;
  127. #if defined(_DEGUG) || defined(DEBUG)
  128. // Load D3D9 Render System(debug)
  129. m_pRoot->loadPlugin("RenderSystem_Direct3D9_d");
  130. // Load OpenGL Render System(debug)
  131. m_pRoot->loadPlugin("RenderSystem_GL_d");
  132. // Load partical system(debug)
  133. m_pRoot->loadPlugin("Plugin_ParticleFX_d");
  134. // Load octree
  135. m_pRoot->loadPlugin("Plugin_OctreeSceneManager_d");
  136. #else
  137. // Load D3D9 Render System
  138. m_pRoot->loadPlugin("RenderSystem_Direct3D9");
  139. // Load OpenGL Render System
  140. m_pRoot->loadPlugin("RenderSystem_GL");
  141. // Load partical system
  142. m_pRoot->loadPlugin("Plugin_ParticleFX");
  143. // Load octree
  144. m_pRoot->loadPlugin("Plugin_OctreeSceneManager");
  145. #endif  
  146. return true;
  147. }
  149. bool FOgreWidget::LoadResource()
  150. {
  151. // Load resource paths from config file
  152. Ogre::ConfigFile cf;
  153. cf.load("resources.cfg");
  154. // Go through all sections & settings in the file
  155. Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();
  156. Ogre::String secName, typeName, archName;
  157. while (seci.hasMoreElements())
  158. {
  159.   secName = seci.peekNextKey();
  160.   Ogre::ConfigFile::SettingsMultiMap *settings = seci.getNext();
  161.   Ogre::ConfigFile::SettingsMultiMap::iterator i;
  162.   for(i = settings->begin(); i != settings->end(); ++i)
  163.   {
  164.    typeName = i->first;
  165.    archName = i->second;
  166.    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
  167.     archName, typeName, secName);
  168.   }
  169. }
  170. return true;
  171. }
  172. bool FOgreWidget::CreateSceneManager()
  173. {
  174. assert(m_pRoot);
  175. m_pSceneManager = m_pRoot->createSceneManager(Ogre::ST_GENERIC);
  176. return true;
  177. }
  178. bool FOgreWidget::CreateDefaultCamera()
  179. {
  180. assert(m_pRoot);
  181. assert(m_pSceneManager);
  182. assert(m_pRenderWindow);
  183. //m_pDefCamera = m_pSceneManager->createCamera(strName);
  184. m_pDefCamera = m_pSceneManager->createCamera("MyCamera");
  185. m_pDefCamera->setPosition(Ogre::Vector3(0,0,80));
  186. m_pDefCamera->lookAt(Ogre::Vector3(0,0,-300));
  187. m_pDefCamera->setNearClipDistance(5);
  188. m_pDefViewport = m_pRenderWindow->addViewport(m_pDefCamera);
  189. m_pDefViewport->setBackgroundColour(Ogre::ColourValue(0, 0.0, 0.0, 1));
  190. m_pDefCamera->setAspectRatio(Ogre::Real(m_pDefViewport->getActualWidth()) / Ogre::Real(m_pDefViewport->getActualHeight()));
  192. // Make window active and post an update
  193. m_pRenderWindow->setActive(true);
  194. m_pRenderWindow->update();
  195. return true;
  196. }
  197. // Create Render Window
  198. bool FOgreWidget::CreateRenderWindow()
  199. {
  200. assert(m_pRoot);
  201. Ogre::NameValuePairList params;
  202. params["left"]                 = "0";
  203. params["top"]                  = "0";
  204. params["border"]               = "none";
  205. //params["externalWindowHandle"] = Ogre::StringConverter::toString((size_t)(HWND)winId());
  206. params["parentWindowHandle"] = Ogre::StringConverter::toString((size_t)(HWND)winId());
  207. string strName  ;
  208. strName = m_strInsName_.toStdString() ;
  209. strName += "_Window" ;
  210. m_pRenderWindow = m_pRoot->createRenderWindow(strName, width(), height(), false, &params) ;
  211. if(m_pRenderWindow == NULL) return false;
  212. return true;
  213. }
  215. bool FOgreWidget::Initialize( )
  216. {
  217. // already inited
  218. if(m_pRoot!= NULL) return true ;
  220. if(Ogre::Root::getSingletonPtr() == NULL)
  221. {
  222.   // create scene root with no config file and plugin
  223.   //m_pRoot = new Root("");
  224.   m_pRoot = new Ogre::Root();
  225.   // Load plugin
  226.   //FALSE_RETURN( LoadPlugin(), false );
  227.   // Select Render System
  228.   FALSE_RETURN( SelectRenderSystem(), false );
  229.   m_pRoot->initialise(false);
  230.   // Load Resource
  231.   FALSE_RETURN( LoadResource(), false );
  232. }      
  233. else
  234. {
  235.   m_pRoot = Ogre::Root::getSingletonPtr();
  236. }  
  237. // Create Render Window
  238. FALSE_RETURN( CreateRenderWindow(), false );
  239. // Create Scene Manager
  240. FALSE_RETURN( CreateSceneManager(), false );
  241. // Create Default Camera and Viewport
  242. FALSE_RETURN( CreateDefaultCamera(), false );
  243. Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
  244. // Create Scene
  245. FALSE_RETURN( CreateScene(), false );
  246. CreateLight() ;
  247. startTimer(2);
  248. return false ;
  249. }  
  251. // Select Render System
  252. bool FOgreWidget::SelectRenderSystem()
  253. {
  254. m_pRoot->restoreConfig() ;
  255. if(m_pRoot->showConfigDialog())
  256. {
  257.   // If returned true, user clicked OK so initialise
  258.   // Here we choose to let the system create a default rendering window by passing 'true'
  259.   return true;
  260. }
  261. else
  262.   exit(0);
  263. return false ;
  264. }
  266. bool FOgreWidget::CreateScene()
  267. {
  268. string strName  ;
  269. strName = m_strInsName_.toStdString() ;
  270. strName += ".mesh" ;
  271. m_pMainEnt = m_pSceneManager->createEntity("root_mesh", strName);
  272. m_pMainNode = m_pSceneManager->getRootSceneNode()->createChildSceneNode();
  273. m_pMainNode->attachObject(m_pMainEnt);
  274. return true ;
  275. }
  276. void FOgreWidget::updateDraw()
  277. {
  278. if(m_pRenderWindow != NULL)
  279. {
  280.   //printf("I'm %s\n",m_strInsName_.toStdString().c_str()) ;
  281.   m_pRoot->_fireFrameStarted();
  282.   m_pRenderWindow->update();
  283.   //m_pDefCamera->moveRelative(mDirection);
  284.   //m_pDefCamera->yaw(Ogre::Radian(angleX));
  285.   //m_pDefCamera->pitch(Ogre::Radian(angleY));
  286.   m_pRoot->_fireFrameEnded();
  287. }
  288. }
  289. void FOgreWidget::CreateLight()
  290. {
  291. m_pSceneManager->setAmbientLight(Ogre::ColourValue(0.5, 0.5, 0.5));
  292. m_pMainLight = m_pSceneManager->createLight("mainLight");
  293. m_pMainLight->setPosition(20,80,50);
  294. }
  295. main.cpp
  296. #include <QtGui/QApplication>
  297. #include "FOgreWidget.h"
  298. #include <QVBoxLayout>
  299. #pragma comment( lib, "OgreMain_d.lib")
  300. #pragma comment( lib, "OIS_d.lib")
  301. int main(int argc, char *argv[])
  302. {
  303. QApplication a(argc, argv);
  304. QWidget widget ;
  305. widget.setGeometry (10,10,640,480) ;
  306. FOgreWidget ogreWidget(&widget,QString("ogrehead")) ;
  307. ogreWidget.setGeometry (10,10,340,280) ;
  308. ogreWidget.Initialize() ;
  309. widget.show() ;
  311. a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
  312. return a.exec();
  313. }

3，这样就可以了。运行效果如下：

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只看该作者 1楼 发表于: 2011-05-23
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