source: trunk/VUT/work/TestCulling/TestCullingApplication.cpp @ 139

/**
    \file 
        TestCullingApplication.cpp
    \brief
        Tests the visibility 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 "OgreSceneContentGenerator.h"

#define WIN32_LEAN_AND_MEAN
#include <windows.h>


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

//-----------------------------------------------------------------------
/*void TestCullingApplication::createCamera( void )
{
        // Create the camera
        mCamera = mSceneMgr->createCamera("CullCamera");

        // Position it at 500 in Z direction
        mCamera->setPosition(Vector3(128,25,128));

        // Look back along -Z
    mCamera->lookAt(Vector3(0,0,-300));
    mCamera->setNearClipDistance( 1 );
    mCamera->setFarClipDistance( 1000 );
}*/
//-----------------------------------------------------------------------
TestCullingApplication::~TestCullingApplication()
{
        delete mSceneContentGenerator;
}
//-----------------------------------------------------------------------
void TestCullingApplication::createScene(void)
{
        // Set ambient light
        mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
        
        // Create a light
        Light* l = mSceneMgr->createLight("MainLight");
        //l->setPosition(20,80,50);

        mSceneContentGenerator = new SceneContentGenerator(mSceneMgr);
        mSceneContentGenerator->GenerateScene(3000, "sphere.mesh");

        // Create a skybox
    mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox", 2000, true);
    ColourValue fadeColour(0.1, 0.1, 0.6);
        mWindow->getViewport(0)->setBackgroundColour(fadeColour);

        // CEGUI setup
        setupGui();
}
//-----------------------------------------------------------------------
void TestCullingApplication::setupGui()
{
         mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, ST_EXTERIOR_CLOSE);
     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( );
}
//-----------------------------------------------------------------------
void TestCullingApplication::createFrameListener()
{
        mFrameListener= new TerrainFrameListener(mWindow, mCamera, mSceneMgr, 
                mGUIRenderer, mSceneContentGenerator);
        mFrameListener->showDebugOverlay(true);
        mRoot->addFrameListener(mFrameListener);
}
//-----------------------------------------------------------------------
void TestCullingApplication::chooseSceneManager(void)
{
    mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
}


/***********************************************/
/* TerrainFrameListener implementation         */
/***********************************************/
//-----------------------------------------------------------------------
TerrainFrameListener::TerrainFrameListener(RenderWindow* win, Camera* cam, 
                                                                           SceneManager *sceneManager, 
                                                                           CEGUI::Renderer *renderer,
                                                                           SceneContentGenerator *sceneContentGenerator)
: ExampleFrameListener(win, cam, false, true),
mSceneMgr(sceneManager),
mGUIRenderer(renderer), 
mShutdownRequested(false), 
mLMouseDown(false),
mRMouseDown(false),
mSceneContentGenerator(sceneContentGenerator),
mVisibilityThreshold(0),
mCurrentAlgorithm(GtpVisibility::VisibilityEnvironment::COHERENT_HIERARCHICAL_CULLING),
mShowOctree(false),
mUseDepthPass(false),
mUseOptimization(true),
mShowVisualization(false),
mVisualizeCulledNodes(false)
{
    // Reduce move speed
        mMoveSpeed = 50;
        mRotateSpeed *= 2;
 
        // 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/VisibilityDemoOverlay"); 

        mAlgorithmInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/AlgorithmInfo");
        mThresholdInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/ThresholdInfo");
        
        mFrustumCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/FrustumCulledNodesInfo");
        mQueryCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/QueryCulledNodesInfo");
    mTraversedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/TraversedNodesInfo");
        mHierarchyNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/HierarchyNodesInfo");
        mRenderedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/RenderedNodesInfo");
        mObjectsInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/ObjectsInfo");
        mUseOptimizationInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/UseOptimizationInfo");
        mQueriesIssuedInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/QueriesIssuedInfo");

        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
        mThresholdInfo->setCaption(": 0");
        mFrustumCulledNodesInfo->setCaption(": 0");
        mQueryCulledNodesInfo->setCaption(": 0");
        mTraversedNodesInfo->setCaption(": 0");
        mHierarchyNodesInfo->setCaption(": 0");
        mRenderedNodesInfo->setCaption(": 0");
        mObjectsInfo->setCaption(": 0");
        mUseOptimizationInfo->setCaption(": true");
        mQueriesIssuedInfo->setCaption(": 0");

        setAlgorithm(mCurrentAlgorithm);
        
        mSceneMgr->setOption("UseOptimization", &mUseOptimization);
        mSceneMgr->setOption("UseDepthPass", &mUseDepthPass);
        mSceneMgr->setOption("ShowVizualisation", &mShowVisualization);
        mSceneMgr->setOption("ShowOctree", &mShowOctree);

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

 //-----------------------------------------------------------------------
void TerrainFrameListener::mouseReleased(MouseEvent* e)
{
    // Left mouse button up
    if (e->getButtonID() & InputEvent::BUTTON0_MASK)
    {
                CEGUI::MouseCursor::getSingleton().show();
        mLMouseDown = false;
    }
    // Right mouse button up
    else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
    {
        CEGUI::MouseCursor::getSingleton().show();
        mRMouseDown = false;
    }
} 
//-----------------------------------------------------------------------
void TerrainFrameListener::mouseDragged (MouseEvent *e)
 {
         // If we are dragging the left mouse button.            
         if ( mLMouseDown )
     {
                
     }
         // If we are dragging the right mouse button.
         if ( mRMouseDown )
         {
                 mCamera->yaw(-e->getRelX() * mRotateSpeed);
                 mCamera->pitch(-e->getRelY() * mRotateSpeed);
         }
}
//-----------------------------------------------------------------------
bool TerrainFrameListener::frameStarted(const FrameEvent &evt)
{        
        return ExampleFrameListener::frameStarted(evt);
}
//-----------------------------------------------------------------------
bool TerrainFrameListener::frameEnded(const FrameEvent& evt)
{
        if (mShutdownRequested)
                return false;

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

    KEY_PRESSED(KC_SPACE, 0.3, nextAlgorithm());

        KEY_PRESSED(KC_SUBTRACT, 0, changeThreshold(-10));
        KEY_PRESSED(KC_ADD, 0, changeThreshold(10));
        KEY_PRESSED(KC_O, 0.3, toggleUseOptimization());
        KEY_PRESSED(KC_C, 0.3, toggleUseDepthPass());
        KEY_PRESSED(KC_V, 0.3, toggleShowViz());

        updateStats();

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

        mSceneMgr->setOption("Threshold", &mVisibilityThreshold); 
        mThresholdInfo->setCaption(str);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::nextAlgorithm()
{
        mCurrentAlgorithm = ++mCurrentAlgorithm % 
                GtpVisibility::VisibilityEnvironment::NUM_CULLING_MANAGERS,

        setAlgorithm(mCurrentAlgorithm);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::toggleUseOptimization()
{
        mUseOptimization = !mUseOptimization;

        mSceneMgr->setOption("UseOptimization", &mUseOptimization);

        if(mUseOptimization)
                mUseOptimizationInfo->setCaption(": true");
        else
                mUseOptimizationInfo->setCaption(": false");
}
//-----------------------------------------------------------------------
void TerrainFrameListener::toggleShowOctree()
{
        mShowOctree = !mShowOctree;

        mSceneMgr->setOption("ShowOctree", &mShowOctree);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::toggleUseDepthPass()
{
        mUseDepthPass = !mUseDepthPass;

        mSceneMgr->setOption("UseDepthPass", &mUseDepthPass);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::toggleShowViz()
{
        mShowVisualization = !mShowVisualization;

        mSceneMgr->setOption("PrepareVisualization", &mShowVisualization);
        mSceneMgr->setOption("VisualizeCulledNodes", &mVisualizeCulledNodes);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::setAlgorithm(int algorithm)
{
        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
        mSceneMgr->setOption("Algorithm", &mCurrentAlgorithm);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::updateStats()
{
        unsigned int opt = 0;
        char str[100];
        
        mSceneMgr->getOption("NumFrustumCulledNodes", &opt); sprintf(str,": %d", opt); 
        mFrustumCulledNodesInfo->setCaption(str);
        
        mSceneMgr->getOption("NumQueriesIssued", &opt); sprintf(str,": %d", opt); 
        mQueriesIssuedInfo->setCaption(str);

        mSceneMgr->getOption("NumQueryCulledNodes", &opt); sprintf(str,": %d", opt); 
        mQueryCulledNodesInfo->setCaption(str);
        
        mSceneMgr->getOption("NumTraversedNodes", &opt); sprintf(str,": %d", opt); 
        mTraversedNodesInfo->setCaption(str);

        mSceneMgr->getOption("NumHierarchyNodes", &opt); sprintf(str,": %d", opt); 
        mHierarchyNodesInfo->setCaption(str);

        mSceneMgr->getOption("NumRenderedNodes", &opt); sprintf(str,": %d", opt); 
        mRenderedNodesInfo->setCaption(str);

        sprintf(str,": %d", mSceneContentGenerator->GetObjectCount()); 
        mObjectsInfo->setCaption(str);
}
//-----------------------------------------------------------------------
void TerrainFrameListener::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 TerrainFrameListener::keyReleased(KeyEvent* e)
{
        CEGUI::System::getSingleton().injectKeyUp(e->getKey());
        e->consume();
}
//-----------------------------------------------------------------------
void TerrainFrameListener::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;
}