meshviewercnlistener.h

由于Ogre自带的模型观察器无法处理中文名

/*
天龙八部模型查看工具
作者：shangguanw2
E-mail: [e-mail]
QQ:329967612

          2009-1-5
          代码可以随意使用，Enjoy!
          
*/

#ifndef _MESHVIEWERCN_LISTENER_H_
#define _MESHVIEWERCN_LISTENER_H_

#include <ExampleApplication.h>

//头文件包含CEGUI
#include <CEGUI/CEGUIImageset.h>
#include <CEGUI/CEGUISystem.h>
#include <CEGUI/CEGUILogger.h>
#include <CEGUI/CEGUISchemeManager.h>
#include <CEGUI/CEGUIWindowManager.h>
#include <CEGUI/CEGUIWindow.h>
#include <CEGUI/CEGUIPropertyHelper.h>
#include <CEGUI/elements/CEGUICombobox.h>
#include <CEGUI/elements/CEGUIListbox.h>
#include <CEGUI/elements/CEGUIListboxTextItem.h>
#include <CEGUI/elements/CEGUIPushButton.h>
#include <CEGUI/elements/CEGUIScrollbar.h>
#include <OgreCEGUIRenderer.h>
#include <OgreCEGUIResourceProvider.h>

//传递给FrameListener的自定义参数
typedef struct _CUSTOM_PARAM{
	Ogre::AnimationState*	animState;
	bool					stateEnabled;		//动画状态是否有效
	Ogre::SceneNode*		node;				//mesh的场景节点
}CUSTOM_PARAM;


//用于在OIS和CEGUI之间转换鼠标
CEGUI::MouseButton convertOISMouseButtonToCegui(int buttonID)
{
    switch (buttonID)
    {
	case 0: return CEGUI::LeftButton;
	case 1: return CEGUI::RightButton;
	case 2:	return CEGUI::MiddleButton;
	case 3: return CEGUI::X1Button;
	default: return CEGUI::LeftButton;
    }
}

class MeshViewerCnListener : public ExampleFrameListener,public OIS::KeyListener,public OIS::MouseListener
{
private:
	CEGUI::Renderer* mGUIRenderer;
	bool	mShutdownRequested;
	CUSTOM_PARAM*	mParam;

public:
	MeshViewerCnListener(RenderWindow* win, Camera* cam, CEGUI::Renderer* renderer,CUSTOM_PARAM* param)
        : ExampleFrameListener(win, cam, true, true, true), 
          mGUIRenderer(renderer),
          mShutdownRequested(false),
		  mParam(param)
    {
		mMouse->setEventCallback(this);
		mKeyboard->setEventCallback(this);
	
    }

	 /// Tell the frame listener to exit at the end of the next frame
    void requestShutdown(void)
    {
        mShutdownRequested = true;
    }

	bool frameStarted(const FrameEvent& evt)
	{
		if(!ExampleFrameListener::frameStarted(evt))
			return false;

		
		if(mParam->animState!=NULL&& mParam->stateEnabled==true)
			mParam->animState->addTime(evt.timeSinceLastFrame);
			
		const OIS::MouseState& ms = mMouse->getMouseState();
		if(ms.buttonDown(OIS::MB_Left)){	//如果左键按下
			Ogre::Radian x = Ogre::Degree(ms.X.rel*0.13);
			Ogre::Radian y = Ogre::Degree(ms.Y.rel*0.13);

			if(mParam->node!=NULL){
				mParam->node->yaw(x);
				mParam->node->pitch(y);
			}
		}
		if(ms.buttonDown(OIS::MB_Right)){
			Ogre::Vector3 trans;
			trans.x=-ms.X.rel*0.13;
			trans.y=-ms.Y.rel*0.13;
			mParam->node->translate(trans);
		}

		return true;
	}
	
    bool frameEnded(const FrameEvent& evt)
    {
        if (mShutdownRequested)
            return false;
        else
            return ExampleFrameListener::frameEnded(evt);
    }
	
		bool mouseMoved( const OIS::MouseEvent &arg )
	{
		CEGUI::System::getSingleton().injectMouseMove( arg.state.X.rel, arg.state.Y.rel );
		return true;
	}

	//----------------------------------------------------------------//
	bool mousePressed( const OIS::MouseEvent &arg, OIS::MouseButtonID id )
	{
		CEGUI::System::getSingleton().injectMouseButtonDown(convertOISMouseButtonToCegui(id));
		return true;
	}

	//----------------------------------------------------------------//
	bool mouseReleased( const OIS::MouseEvent &arg, OIS::MouseButtonID id )
	{
		CEGUI::System::getSingleton().injectMouseButtonUp(convertOISMouseButtonToCegui(id));
		return true;
	}

	//----------------------------------------------------------------//
	bool keyPressed( const OIS::KeyEvent &arg )
	{
		if( arg.key == OIS::KC_ESCAPE )
			mShutdownRequested = true;
		CEGUI::System::getSingleton().injectKeyDown( arg.key );
		CEGUI::System::getSingleton().injectChar( arg.text );
		return true;
	}

	//----------------------------------------------------------------//
	bool keyReleased( const OIS::KeyEvent &arg )
	{
		CEGUI::System::getSingleton().injectKeyUp( arg.key );
		return true;
	}
};
#endif