source: trunk/VUT/work/TestCullingTerrain/TestCullingTerrainApplication.cpp @ 80

Revision 80, 13.0 KB checked in by mattausch, 19 years ago (diff)
Line 
1/**
2    \file
3        TestCullingTerrainApplication.cpp
4    \brief
5        Tests the visibility culling algorithm
6*/
7
8#include <OgreNoMemoryMacros.h>
9#include <CEGUI/CEGUI.h>
10#include <../CEGUIRenderer/include/OgreCEGUIRenderer.h>
11#include <../CEGUIRenderer/include/OgreCEGUIResourceProvider.h>
12#include <../CEGUIRenderer/include/OgreCEGUITexture.h>
13#include <OgreMemoryMacros.h>
14
15#include "Ogre.h"
16#include "TestCullingTerrainApplication.h"
17
18#define WIN32_LEAN_AND_MEAN
19#include "windows.h"
20
21
22/*******************************************************/
23/*     TestCullingTerrainApplication implementation    */
24/*******************************************************/
25TestCullingTerrainApplication::~TestCullingTerrainApplication()
26{
27        delete mSceneContentGenerator;
28}
29//-----------------------------------------------------------------------
30void TestCullingTerrainApplication::createCamera( void )
31{
32        // Create the camera
33        mCamera = mSceneMgr->createCamera("PlayerCam");
34
35        // Position it at 500 in Z direction
36        mCamera->setPosition(Vector3(128,25,128));
37
38        // Look back along -Z
39    mCamera->lookAt(Vector3(0,0,-300));
40    mCamera->setNearClipDistance(1);
41    mCamera->setFarClipDistance(1000);
42}
43//-----------------------------------------------------------------------
44void TestCullingTerrainApplication::createScene()
45{
46        // Set ambient light
47        mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
48       
49        // Create a light
50        Light* l = mSceneMgr->createLight("MainLight");
51        // Accept default settings: point light, white diffuse, just set position
52        // NB I could attach the light to a SceneNode if I wanted it to move automatically with
53        //  other objects, but I don't
54        l->setPosition(20,80,50);
55
56        // --Fog
57        // NB it's VERY important to set this before calling setWorldGeometry
58        // because the vertex program picked will be different
59        ColourValue fadeColour(0.93, 0.86, 0.76);
60        mWindow->getViewport(0)->setBackgroundColour(fadeColour);
61        //mSceneMgr->setFog( FOG_LINEAR, fadeColour, .001, 500, 1000);
62
63        // Create a skybox
64    //mSceneMgr->setSkyBox(true, "Examples/SpaceSkyBox", 500, false);
65        //mSceneMgr->setSkyDome( true, "Examples/CloudySky", 5, 8, 500, false );
66
67        /*      // Define the required skyplane
68        Plane plane;
69        // 5000 world units from the camera
70        plane.d = 5000;
71        // Above the camera, facing down
72        plane.normal = -Vector3::UNIT_Y;
73        // Create the plane 10000 units wide, tile the texture 3 times
74    mSceneMgr->setSkyPlane(true, plane, "Examples/SpaceSkyPlane",10000,3);*/
75
76        std::string terrain_cfg("terrain.cfg");
77#if OGRE_PLATFORM == OGRE_PLATFORM_APPLE
78        terrain_cfg = mResourcePath + terrain_cfg;
79#endif
80        mSceneMgr->setWorldGeometry(terrain_cfg);
81        // Infinite far plane?
82        if (mRoot->getRenderSystem()->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE))
83        {
84                mCamera->setFarClipDistance(0);
85        }
86
87        // Set a nice viewpoint
88        mCamera->setPosition(707,2500,528);
89        mCamera->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
90       
91        // CEGUI setup
92        setupGui();
93        // HACK: necessary to call once before the content creation for
94        // terrain initialisation
95        mSceneMgr->_renderScene(mCamera, mWindow->getViewport(0), true);
96
97        mSceneContentGenerator = new TerrainContentGenerator(mSceneMgr);
98        mSceneContentGenerator->GenerateScene(300, "robot.mesh");
99        // no limitations now: the user can set objects also on peaks
100        mSceneContentGenerator->SetMaxHeight(5000);
101}
102//-----------------------------------------------------------------------
103void TestCullingTerrainApplication::setupGui()
104{
105         mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY,
106                 false, 3000, ST_EXTERIOR_CLOSE);
107     mGUISystem = new CEGUI::System(mGUIRenderer);
108
109         // Mouse
110     CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLook.scheme");
111     CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");
112         mGUISystem->setDefaultMouseCursor(
113                (CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");
114
115         CEGUI::MouseCursor::getSingleton().show();
116}
117//-----------------------------------------------------------------------
118void TestCullingTerrainApplication::createFrameListener()
119{
120        mFrameListener= new MouseQueryListener(mWindow, mCamera, mSceneMgr,
121                mGUIRenderer, mSceneContentGenerator);
122        mFrameListener->showDebugOverlay(true);
123        mRoot->addFrameListener(mFrameListener);
124}
125//-----------------------------------------------------------------------
126void TestCullingTerrainApplication::chooseSceneManager()
127{
128        mSceneMgr = mRoot->getSceneManager(ST_EXTERIOR_CLOSE);
129}
130/***********************************************/
131/*      MouseQueryListener implementation      */
132/***********************************************/
133//-----------------------------------------------------------------------
134MouseQueryListener::MouseQueryListener(RenderWindow* win, Camera* cam,
135                                                                           SceneManager *sceneManager,
136                                                                           CEGUI::Renderer *renderer,
137                                                                           TerrainContentGenerator *sceneGenerator):
138ExampleFrameListener(win, cam, false, true), mGUIRenderer(renderer),
139mShutdownRequested(false)
140{
141        // Setup default variables
142        mCurrentObject = NULL;
143        mLMouseDown = false;
144        mRMouseDown = false;
145        mSceneMgr = sceneManager;
146        mSceneContentGenerator = sceneGenerator;
147
148    // Reduce move speed
149        mMoveSpeed = 50;
150        mRotateSpeed *= 2;
151
152        mCurrentAlgorithm = GtpVisibility::VisibilityEnvironment::COHERENT_HIERARCHICAL_CULLING,
153        mThreshold = 0;
154   
155        // Register this so that we get mouse events.
156        mEventProcessor->addMouseListener(this);
157        mEventProcessor->addMouseMotionListener(this);
158        mEventProcessor->addKeyListener(this);
159
160        mRayQueryExecutor = new RayQueryExecutor(mSceneMgr);
161       
162        // show overlay
163        Overlay* pOver = OverlayManager::getSingleton().getByName("Example/VisibilityDemoOverlay");
164
165        mAlgorithmInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/AlgorithmInfo");
166        mThresholdInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/ThresholdInfo");
167        mFrustumCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/FrustumCulledNodesInfo");
168        mQueryCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/QueryCulledNodesInfo");
169    mTraversedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/TraversedNodesInfo");
170        mHierarchyNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/HierarchyNodesInfo");
171        mRenderedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Visibility/RenderedNodesInfo");
172
173        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
174        mThresholdInfo->setCaption(": 0");
175        mFrustumCulledNodesInfo->setCaption(": 0");
176        mQueryCulledNodesInfo->setCaption(": 0");
177        mTraversedNodesInfo->setCaption(": 0");
178        mHierarchyNodesInfo->setCaption(": 0");
179        mRenderedNodesInfo->setCaption(": 0");
180               
181    pOver->show();
182}
183//-----------------------------------------------------------------------
184MouseQueryListener::~MouseQueryListener( )
185{
186        delete mRayQueryExecutor;
187}
188//-----------------------------------------------------------------------
189void MouseQueryListener::mouseMoved (MouseEvent *e)
190{
191        // Update CEGUI with the mouse motion
192    CEGUI::System::getSingleton().injectMouseMove(e->getRelX() * mGUIRenderer->getWidth(),
193                e->getRelY() * mGUIRenderer->getHeight());
194}
195//-----------------------------------------------------------------------
196void MouseQueryListener::mousePressed(MouseEvent* e)
197{
198     // Left mouse button down
199     if (e->getButtonID() & InputEvent::BUTTON0_MASK)
200     {
201                 CEGUI::MouseCursor::getSingleton().hide();
202
203                 // Setup the ray scene query
204         Ray mouseRay = mCamera->getCameraToViewportRay(e->getX(), e->getY());
205   
206                 Vector3 queryResult;
207                 
208                 // Get results, create a node/entity on the position
209                 mCurrentObject = mSceneContentGenerator->GenerateSceneObject(
210                         mouseRay.getOrigin(), mouseRay.getDirection(), "robot.mesh");
211               
212         mLMouseDown = true;
213     }
214     // Right mouse button down
215     else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
216     {
217         CEGUI::MouseCursor::getSingleton().hide();
218         mRMouseDown = true;
219     } // else if
220} // mousePressed
221
222 //-----------------------------------------------------------------------
223void MouseQueryListener::mouseReleased(MouseEvent* e)
224{
225    // Left mouse button up
226    if (e->getButtonID() & InputEvent::BUTTON0_MASK)
227    {
228                CEGUI::MouseCursor::getSingleton().show();
229        mLMouseDown = false;
230    }
231    // Right mouse button up
232    else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
233    {
234        CEGUI::MouseCursor::getSingleton().show();
235        mRMouseDown = false;
236    }
237}
238//-----------------------------------------------------------------------
239void MouseQueryListener::mouseDragged(MouseEvent *e)
240 {
241         // If we are dragging the left mouse button.           
242         if (mLMouseDown)
243     {
244                 Vector3 queryResult;
245                 Ray mouseRay = mCamera->getCameraToViewportRay(e->getX(), e->getY());
246
247                 if(mRayQueryExecutor->executeRayQuery(&queryResult, mouseRay))
248                 {
249                         if(mCurrentObject)
250                                 mCurrentObject->setPosition(queryResult);
251                 }
252     }
253         // If we are dragging the right mouse button.
254         if (mRMouseDown)
255         {
256                 mCamera->yaw( -e->getRelX() * mRotateSpeed );
257                 mCamera->pitch( -e->getRelY() * mRotateSpeed );
258         }
259}
260//-----------------------------------------------------------------------
261bool MouseQueryListener::frameStarted(const FrameEvent &evt)
262{
263        // clamp to terrain
264        Vector3 camPos = mCamera->getPosition();
265        Vector3 queryResult;
266
267    if(mRayQueryExecutor->executeRayQuery(&queryResult,
268                Vector3(camPos.x, 5000.0f, camPos.z), Vector3::NEGATIVE_UNIT_Y))
269        {
270                mCamera->setPosition(mCamera->getPosition().x, queryResult.y + 10,
271                        mCamera->getPosition().z);
272        }
273       
274        return ExampleFrameListener::frameStarted(evt);
275}
276//-----------------------------------------------------------------------
277bool MouseQueryListener::frameEnded(const FrameEvent& evt)
278{
279        if (mShutdownRequested)
280                return false;
281
282    if (timeDelay >= 0)
283        timeDelay -= evt.timeSinceLastFrame;
284
285    KEY_PRESSED(KC_SPACE, 0.3, changeAlgorithm());
286
287        KEY_PRESSED(KC_SUBTRACT, 0, changeThreshold(-10));
288        KEY_PRESSED(KC_ADD, 0, changeThreshold(10));
289        //KEY_PRESSED(KC_T, 1, change);
290     
291        changeStats();
292
293    return ExampleFrameListener::frameStarted(evt) && ExampleFrameListener::frameEnded(evt);       
294}
295//-----------------------------------------------------------------------
296void MouseQueryListener::changeThreshold(int incr)
297{
298        mThreshold += incr; if(mThreshold < 0) mThreshold = 0;
299       
300        char str[100]; sprintf(str,": %d", mThreshold);
301
302        mSceneMgr->setOption("Threshold", &mThreshold);
303        mThresholdInfo->setCaption(str);
304}
305//-----------------------------------------------------------------------
306void MouseQueryListener::changeAlgorithm()
307{
308        mCurrentAlgorithm = ++mCurrentAlgorithm %
309                GtpVisibility::VisibilityEnvironment::NUM_CULLING_MANAGERS,
310
311        mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
312        mSceneMgr->setOption("Algorithm", &mCurrentAlgorithm);
313}
314//-----------------------------------------------------------------------
315void MouseQueryListener::changeStats()
316{
317        unsigned int opt = 0;
318        char str[100];
319       
320        mSceneMgr->getOption("NumFrustumCulledNodes", &opt); sprintf(str,": %d", opt);
321        mFrustumCulledNodesInfo->setCaption(str);
322       
323        mSceneMgr->getOption("NumQueryCulledNodes", &opt); sprintf(str,": %d", opt);
324        mQueryCulledNodesInfo->setCaption(str);
325       
326        mSceneMgr->getOption("NumTraversedNodes", &opt); sprintf(str,": %d", opt);
327        mTraversedNodesInfo->setCaption(str);
328
329        mSceneMgr->getOption("NumHierarchyNodes", &opt); sprintf(str,": %d", opt);
330        mHierarchyNodesInfo->setCaption(str);
331
332        mSceneMgr->getOption("NumRenderedNodes", &opt); sprintf(str,": %d", opt);
333        mRenderedNodesInfo->setCaption(str);
334}
335//-----------------------------------------------------------------------
336void MouseQueryListener::keyPressed(KeyEvent* e)
337{
338        if(e->getKey() == KC_ESCAPE)
339    {
340                mShutdownRequested = true;
341                e->consume();
342                return;
343        }
344
345        CEGUI::System::getSingleton().injectKeyDown(e->getKey());
346        CEGUI::System::getSingleton().injectChar(e->getKeyChar());
347        e->consume();
348}
349//-----------------------------------------------------------------------
350void MouseQueryListener::keyReleased(KeyEvent* e)
351{
352        CEGUI::System::getSingleton().injectKeyUp(e->getKey());
353        e->consume();
354}
355//-----------------------------------------------------------------------
356void MouseQueryListener::keyClicked(KeyEvent* e)
357{
358        // Do nothing
359        e->consume();
360}
361//-----------------------------------------------------------------------
362INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
363{
364    // Create application object
365    TestCullingTerrainApplication app;
366
367        try
368        {
369        app.go();
370    }
371        catch( Ogre::Exception& e )
372        {
373        MessageBox( NULL, e.getFullDescription().c_str(),
374                        "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
375    }   
376
377    return 0;
378}
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