source: trunk/VUT/OcclusionCullingSceneManager/TestCulling/TestCullingApplication.cpp @ 33

/**
    \file 
        TestCullingApplication.cpp
    \brief
        Tests the occlusion culling algorithm
*/

#include <OgreNoMemoryMacros.h>
#include <CEGUI/CEGUI.h>
#include <../CEGUIRenderer/include/OgreCEGUIRenderer.h>
#include <../CEGUIRenderer/include/OgreCEGUIResourceProvider.h>
#include <../CEGUIRenderer/include/OgreCEGUITexture.h>
#include <OgreMemoryMacros.h>

#include "Ogre.h"
#include "TestCullingApplication.h"
#include "OgreOcclusionCullingSceneTraverser.h"

#define WIN32_LEAN_AND_MEAN
#include "windows.h"

/***********************************************/
/* TestCullingApplication implementation       */
/***********************************************/


//-----------------------------------------------------------------------
void TestCullingApplication::createScene(void)
{
     // Create a skybox
     mSceneMgr->setSkyBox(true, "Examples/SpaceSkyBox");
         mShip = mSceneMgr->createEntity("razor", "razor.mesh");
         mShipNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
         mShipNode->attachObject(mShip);

         mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));

         // CEGUI setup
     mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, ST_GENERIC);
     mGUISystem = new CEGUI::System(mGUIRenderer);

         // Mouse
     CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLook.scheme");
     CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");
         mGUISystem->setDefaultMouseCursor(
                (CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");

         CEGUI::MouseCursor::getSingleton().show( );
     
        /* CEGUI::Window* sheet = 
            CEGUI::WindowManager::getSingleton().loadWindowLayout(
                (CEGUI::utf8*)"ogregui.layout"); 

     mGUISystem->setGUISheet(sheet);*/
}
//-----------------------------------------------------------------------
void TestCullingApplication::createFrameListener(void)
{
        mFrameListener= new MouseQueryListener(mWindow, mCamera, mSceneMgr, mGUIRenderer, mShipNode);
        mFrameListener->showDebugOverlay(true);
        mRoot->addFrameListener(mFrameListener);
}
//-----------------------------------------------------------------------
void TestCullingApplication::chooseSceneManager(void)
{
    //mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
        mSceneMgr = mRoot->getSceneManager(ST_EXTERIOR_CLOSE);
}

/***********************************************/
/* MouseQueryListener implementation           */
/***********************************************/

//-----------------------------------------------------------------------
MouseQueryListener::MouseQueryListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager, CEGUI::Renderer *renderer,
                                           SceneNode* shipNode)
        : ExampleFrameListener(win, cam, false, true), mGUIRenderer(renderer), mShipNode(shipNode)//,  mShutdownRequested(false)
{

        // Setup default variables
        mCurrentObject = NULL;
        mLMouseDown = false;
        mRMouseDown = false;
        mSceneMgr = sceneManager;

    // Reduce move speed
        mMoveSpeed = 50;
        mRotateSpeed *= 2;

        mCurrentAlgorithm = OcclusionCullingSceneTraverser::RENDER_COHERENT;
        mThreshold = 0;
    
        // Register this so that we get mouse events.
        mEventProcessor->addMouseListener(this);
        mEventProcessor->addMouseMotionListener(this);
        mEventProcessor->addKeyListener(this);

        // show overlay
        Overlay* pOver = OverlayManager::getSingleton().getByName("Example/OcclusionDemoOverlay"); 

        mAlgorithmInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/AlgorithmInfo");
        mThresholdInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/ThresholdInfo");
        mFrustumCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/FrustumCulledNodesInfo");
        mQueryCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/QueryCulledNodesInfo");
    mTraversedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/TraversedNodesInfo");

        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
        mThresholdInfo->setCaption(": 0");
        mFrustumCulledNodesInfo->setCaption(": 0");
        mQueryCulledNodesInfo->setCaption(": 0");
        mTraversedNodesInfo->setCaption(": 0");

    pOver->show();
} // MouseQueryListener
//-----------------------------------------------------------------------
void MouseQueryListener::mouseMoved (MouseEvent *e)
{
        // Update CEGUI with the mouse motion
    CEGUI::System::getSingleton().injectMouseMove(e->getRelX() * mGUIRenderer->getWidth(), e->getRelY() * mGUIRenderer->getHeight());
}
//-----------------------------------------------------------------------
void MouseQueryListener::mousePressed(MouseEvent* e)
{
     // Left mouse button down
     if (e->getButtonID() & InputEvent::BUTTON0_MASK)
     {
                 CEGUI::MouseCursor::getSingleton().hide( );
                 mLMouseDown = true;
     } // if
     // Right mouse button down
     else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
     {
         CEGUI::MouseCursor::getSingleton().hide( );
         mRMouseDown = true;
     } // else if
} // mousePressed

 //-----------------------------------------------------------------------
void MouseQueryListener::mouseReleased(MouseEvent* e)
{
    // Left mouse button up
    if (e->getButtonID() & InputEvent::BUTTON0_MASK)
    {
                CEGUI::MouseCursor::getSingleton().show( );
        mLMouseDown = false;
    } // if
    // Right mouse button up
    else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
    {
        CEGUI::MouseCursor::getSingleton().show( );
        mRMouseDown = false;
    } // else if
} // mouseReleased
//-----------------------------------------------------------------------
void MouseQueryListener::mouseDragged (MouseEvent *e)
 {
     // If we are dragging the left mouse button.
     if ( mLMouseDown )
     {
                  mShipNode->translate(-e->getRelX() * 200, -e->getRelY() * 200, 0.0);
     } // if

    // If we are dragging the right mouse button.
    else if ( mRMouseDown )
    {
        mCamera->yaw( -e->getRelX() * mRotateSpeed );
        mCamera->pitch( -e->getRelY() * mRotateSpeed );
    } // else if
} // mouseDragged
//-----------------------------------------------------------------------
bool MouseQueryListener::frameEnded(const FrameEvent& evt)
{
        if (mShutdownRequested)
                return false;

    if (timeDelay >= 0) 
        timeDelay -= evt.timeSinceLastFrame;

    KEY_PRESSED(KC_SPACE, 0.3, changeAlgorithm());

        KEY_PRESSED(KC_SUBTRACT, 0.3, changeThreshold(-10));
        KEY_PRESSED(KC_ADD, 0, changeThreshold(10));
        //KEY_PRESSED(KC_T, 1, change);
      
        changeStats();

    return ExampleFrameListener::frameStarted(evt) && ExampleFrameListener::frameEnded(evt);        
}
//-----------------------------------------------------------------------
void MouseQueryListener::changeThreshold(int incr)
{
        mThreshold += incr; if(mThreshold < 0) mThreshold = 0;
        
        char str[100]; sprintf(str,": %d", mThreshold);

        mSceneMgr->setOption("Threshold", &mThreshold); 
        mThresholdInfo->setCaption(str);
}
//-----------------------------------------------------------------------
void MouseQueryListener::changeAlgorithm()
{
    mCurrentAlgorithm = ++mCurrentAlgorithm % OcclusionCullingSceneTraverser::NUM_RENDERMODES;

        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
        mSceneMgr->setOption("Algorithm", &mCurrentAlgorithm);
}
//-----------------------------------------------------------------------
void MouseQueryListener::changeStats()
{
        unsigned int opt = 0;
        char str[100];
        
        mSceneMgr->getOption("NumFrustumCulledNodes", &opt); sprintf(str,": %d", opt); 
        mFrustumCulledNodesInfo->setCaption(str);
        
        mSceneMgr->getOption("NumQueryCulledNodes", &opt); sprintf(str,": %d", opt); 
        mQueryCulledNodesInfo->setCaption(str);
        
        mSceneMgr->getOption("NumTraversedNodes", &opt); sprintf(str,": %d", opt); 
        mTraversedNodesInfo->setCaption(str);
}
//-----------------------------------------------------------------------
void MouseQueryListener::keyPressed(KeyEvent* e)
{
        if(e->getKey() == KC_ESCAPE)
    {
                mShutdownRequested = true;
                e->consume();
                return;
        }

        CEGUI::System::getSingleton().injectKeyDown(e->getKey());
        CEGUI::System::getSingleton().injectChar(e->getKeyChar());
        e->consume();
}
//-----------------------------------------------------------------------
void MouseQueryListener::keyReleased(KeyEvent* e)
{
        CEGUI::System::getSingleton().injectKeyUp(e->getKey());
        e->consume();
}
//-----------------------------------------------------------------------
void MouseQueryListener::keyClicked(KeyEvent* e) 
{
        // Do nothing
        e->consume();
}
//-----------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
{
    // Create application object
    TestCullingApplication app;

        try {
        app.go();
    } catch( Ogre::Exception& e ) {
        MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
    }   

    return 0;
}