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source: GTP/trunk/App/Demos/Vis/HillyTerrain/OGRE/TestCullingTerrainApplication.cpp @ 1265

Revision 1265, 25.8 KB checked in by mattausch, 18 years ago (diff)

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1	#include <OgreNoMemoryMacros.h>
2	#include <CEGUI/CEGUI.h>
3	#include <../CEGUIRenderer/include/OgreCEGUIRenderer.h>
4	#include <../CEGUIRenderer/include/OgreCEGUIResourceProvider.h>
5	#include <../CEGUIRenderer/include/OgreCEGUITexture.h>
6	#include <OgreMemoryMacros.h>
7	#include <OgreIteratorWrappers.h>
8	#include <Ogre.h>
9	#include "TestCullingTerrainApplication.h"
10	#include "TerrainFrameListener.h"
11
12	#if COLLADA
13	#include "OgreColladaPrerequisites.h"
14	#include "OgreColladaDocument.h"
15	#include "OgreColladaScene.h"
16	#endif
17
18	#include "IVReader.h"
19
20	#define WIN32_LEAN_AND_MEAN
21	#include <windows.h>
22
23	const static bool USE_STATIC_GEOMETRY = false;
24	bool TestCullingTerrainApplication::msShowHillyTerrain = false;
25
26
27
28	/*************************************************************/
29	/* EntityState implementation */
30	/*************************************************************/
31
32
33	Vector3 EntityState::msMinPos = Vector3::ZERO;
34	Vector3 EntityState::msMaxPos = Vector3::ZERO;
35
36	EntityState::EntityState(Entity *ent, State entityState, Real speed):
37	mEntity(ent), mState(entityState), mAnimationSpeed(speed)
38	{
39	switch(entityState)
40	{
41	case MOVING:
42	mAnimationState = mEntity->getAnimationState("Walk");
43	break;
44	case WAITING:
45	mAnimationState = mEntity->getAnimationState("Idle");
46	break;
47	case STOP:
48	mAnimationState = NULL;
49	break;
50	default:
51	break;
52	}
53	// enable animation state
54	if (mAnimationState)
55	{
56	mAnimationState->setLoop(true);
57	mAnimationState->setEnabled(true);
58	}
59
60	mTimeElapsed = Math::RangeRandom(1, 5);
61	}
62	//-----------------------------------------------------------------------
63	EntityState::~EntityState()
64	{
65	mAnimationState = NULL;
66	mEntity = NULL;
67	}
68	//-----------------------------------------------------------------------
69	Entity *EntityState::GetEntity()
70	{
71	return mEntity;
72	}
73	//-----------------------------------------------------------------------
74	EntityState::State EntityState::GetState()
75	{
76	return mState;
77	}
78	//-----------------------------------------------------------------------
79	void EntityState::update(Real timeSinceLastFrame)
80	{
81	mTimeElapsed -= timeSinceLastFrame * mAnimationSpeed;
82
83	if (!mEntity \|\| !mAnimationState)
84	return;
85
86	if (mState == MOVING) // toggle between moving (longer) and waiting (short)
87	{
88	SceneNode *parent = mEntity->getParentSceneNode();
89
90	if (!parent)
91	return;
92
93	if (mTimeElapsed <= 0) // toggle animation state
94	{
95	if (mAnimationState->getAnimationName() == "Idle")
96	{
97	SetAnimationState("Walk", true);
98
99	mTimeElapsed = walk_duration; // walk for mTimeElapsed units
100
101	// choose random rotation
102	Radian rnd = Radian(Math::UnitRandom() * Math::PI * rotate_factor);
103
104	//mEntity->getParentSceneNode()->rotate();
105	parent->yaw(rnd);
106	}
107	else
108	{
109	SetAnimationState("Idle", true);
110	mTimeElapsed = wait_duration; // wait for mTimeElapsed seconds
111	}
112	}
113
114	if (mAnimationState->getAnimationName() == "Walk") // move forward
115	{
116	// store old position, just in case we get out of bounds
117	Vector3 oldPos = parent->getPosition();
118	parent->translate(parent->getLocalAxes(), Vector3(move_factor * mAnimationSpeed, 0, 0));
119
120	// HACK: if out of bounds => reset to old position and set animationstate to idle
121	if (OutOfBounds(parent))
122	{
123	parent->setPosition(oldPos);
124	SetAnimationState("Idle", true);
125
126	mTimeElapsed = wait_duration;
127	}
128	}
129	}
130
131	// add time to drive animation
132	mAnimationState->addTime(timeSinceLastFrame * mAnimationSpeed);
133	}
134	//-----------------------------------------------------------------------
135	void EntityState::SetAnimationState(String stateStr, bool loop)
136	{
137	if (!mEntity)
138	return;
139
140	mAnimationState = mEntity->getAnimationState(stateStr);
141	mAnimationState->setLoop(loop);
142	mAnimationState->setEnabled(true);
143	}
144	//-----------------------------------------------------------------------
145	bool EntityState::OutOfBounds(SceneNode *node)
146	{
147	Vector3 pos = node->getPosition();
148
149	if ((pos > msMinPos) && (pos < msMaxPos))
150	return false;
151
152	return true;
153	}
154
155
156
157	/********************************************************************/
158	/* TestCullingTerrainApplication implementation */
159	/********************************************************************/
160
161
162	TestCullingTerrainApplication::TestCullingTerrainApplication():
163	mTerrainContentGenerator(NULL),
164	mRayQueryExecutor(NULL),
165	mIVReader(NULL),
166	mFilename("terrain"),
167	mEnvironmentFilename("generate_viewcells.env")
168	{
169	}
170	//-------------------------------------------------------------------------
171	void TestCullingTerrainApplication::loadConfig(const String& filename)
172	{
173	// TODO matt
174	// Set up the options
175	ConfigFile config;
176	String val;
177
178	config.load(filename);
179
180	std::stringstream d; d << "reading the config file from: " << filename;
181	LogManager::getSingleton().logMessage(d.str());
182
183	val = config.getSetting("Scene");
184
185	if (!val.empty())
186	{
187	mFilename = val.c_str();
188	d << "\nloading scene from file: " << mFilename;
189	LogManager::getSingleton().logMessage(d.str());
190	}
191
192
193	/*val = config.getSetting("ViewCells");
194	if (!val.empty())
195	{ mViewCellsFilename = val.c_str();}*/
196
197	val = config.getSetting("VisibilityEnvironment");
198
199	if (!val.empty())
200	{
201	mEnvironmentFilename = val.c_str();
202	std::stringstream d; d << "loading environment from file: " << mEnvironmentFilename;
203	LogManager::getSingleton().logMessage(d.str());
204	}
205
206	Vector3 v = Vector3::UNIT_SCALE;
207
208	val = config.getSetting("ViewX");
209
210	if (!val.empty())
211	v.x = atof( val.c_str() );
212
213	val = config.getSetting("ViewY");
214
215	if (!val.empty())
216	v.y = atof(val.c_str());
217
218	val = config.getSetting("ViewZ");
219
220	if (!val.empty())
221	v.z = atof( val.c_str());
222
223
224	/////////////////////////
225	// setup scene
226
227	//-- load the scene from specified file
228
229	if (!LoadScene(mFilename))
230	LogManager::getSingleton().logMessage("error loading scene");
231
232
233	GtpVisibility::VisibilityManager *mVisManager = NULL;
234
235	//-- load the environment from file
236	if (mSceneMgr->getOption("VisibilityManager", &mVisManager))
237	{
238	GtpVisibility::VisibilityEnvironment *visEnv = mVisManager->GetVisibilityEnvironment();
239
240	if (!visEnv->LoadEnvironment(mEnvironmentFilename))
241	{
242	std::stringstream d; d << "failed loading environment from " << mEnvironmentFilename;
243	LogManager::getSingleton().logMessage(d.str());
244	}
245	else //-- load environment options
246	{
247	//-- get view cells file name, load view cells only on demand
248	mViewCellsFilename = visEnv->getViewCellsFileName();
249
250	std::stringstream d; d << "view cells file name: " << mViewCellsFilename;
251	LogManager::getSingleton().logMessage(d.str());
252	}
253	}
254	else
255	{
256	LogManager::getSingleton().logMessage("error: no visibility scenemanager available");
257	}
258
259	// set camera position accordingly
260	mCamNode->setPosition(v);
261	}
262	//-----------------------------------------------------------------------
263	TestCullingTerrainApplication::~TestCullingTerrainApplication()
264	{
265	OGRE_DELETE(mTerrainContentGenerator);
266	OGRE_DELETE(mRayQueryExecutor);
267	OGRE_DELETE(mIVReader);
268
269	deleteEntityStates();
270	}
271	//-----------------------------------------------------------------------
272	void TestCullingTerrainApplication::deleteEntityStates()
273	{
274	for (int i = 0; i < (int)mEntityStates.size(); ++i)
275	{
276	OGRE_DELETE(mEntityStates[i]);
277	}
278
279	mEntityStates.clear();
280	}
281	//-----------------------------------------------------------------------
282	void TestCullingTerrainApplication::createCamera()
283	{
284	// create the camera
285	mCamera = mSceneMgr->createCamera("PlayerCam");
286
287	/** set a nice viewpoint
288	* we use a camera node here and apply all transformations on it instead
289	* of applying all transformations directly to the camera
290	* because then the camera is displayed correctly in the visualization
291	*/
292	mCamNode = mSceneMgr->getRootSceneNode()->
293	createChildSceneNode("CamNode1", Vector3(707, 5000, 528));
294
295	mCamNode->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
296	mCamNode->attachObject(mCamera);
297
298	//-- create visualization camera
299	mVizCamera = mSceneMgr->createCamera("VizCam");
300	mVizCamera->setPosition(mCamNode->getPosition());
301
302	mVizCamera->setNearClipDistance(1);
303	mCamera->setNearClipDistance(1);
304
305	// infinite far plane?
306	if (mRoot->getRenderSystem()->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE))
307	{
308	mVizCamera->setFarClipDistance(0);
309	mCamera->setFarClipDistance(0);
310	}
311	else
312	{
313	mVizCamera->setFarClipDistance(20000);
314	mCamera->setFarClipDistance(20000);
315	}
316	}
317
318	//-----------------------------------------------------------------------
319	bool TestCullingTerrainApplication::setup()
320	{
321	bool carryOn = ExampleApplication::setup();
322
323	if (carryOn)
324	createRenderTargetListener();
325
326	return carryOn;
327	}
328	//-----------------------------------------------------------------------
329	void TestCullingTerrainApplication::createRenderTargetListener()
330	{
331	mWindow->addListener(new VisualizationRenderTargetListener(mSceneMgr));
332	}
333	//-----------------------------------------------------------------------
334	bool TestCullingTerrainApplication::LoadSceneCollada(const String &filename,
335	SceneNode *root,
336	const int index)
337	{
338	#if COLLADA
339	// Collada
340	ColladaDocument *daeDoc = new ColladaDocument(mSceneMgr);
341
342	String daeName = filename;
343	//if (daeName.empty())
344	// daeName = "City_1500.dae";
345
346	// default directory
347	//daeName.insert(0, "../../media/models/collada/City");
348	LogManager::getSingleton().logMessage("ColladaDocument - import started");
349
350	// full import
351	if (daeDoc->doImport(daeName))
352	{
353	LogManager::getSingleton().logMessage("yuppi");
354	/**
355	* build up scene
356	* if you only want a specific part of the scene graph, you must fetch a scene node
357	* by its unique node name and give it as parameter
358	* e.g.
359	* ColladaSceneNode *box = mScene->getNode("Box2");
360	* if (box != NULL) box->createOgreInstance(NULL);
361	*/
362	daeDoc->getScene()->createOgreInstance(NULL);
363
364	// everything is loaded, we do not need the collada document anymore
365	delete daeDoc;
366
367	return true;
368	}
369	else
370	{
371	LogManager::getSingleton().logMessage("ColladaDocument - import failed");
372	return false;
373	}
374	#endif
375	return true;
376	}
377	//-----------------------------------------------------------------------
378	bool TestCullingTerrainApplication::LoadSceneIV(const String &filename,
379	SceneNode *root,
380	const int index)
381	{
382
383
384
385	mIVReader = new IVReader();
386
387	Timer *timer = PlatformManager::getSingleton().createTimer();
388	timer->reset();
389	if (1)
390	{
391	std::string logFilename = "IVLog" + Ogre::StringConverter().toString(index) + ".log";
392
393	Log *log = LogManager::getSingleton().createLog(logFilename);
394	mIVReader->setLog(log);
395	}
396
397	//viennaNode->translate(Vector3(-300, -300, 0));
398
399	if (mIVReader->loadFile(filename.c_str()))
400	{
401	SceneNode *node = root->createChildSceneNode("IVSceneNode" + index);
402
403	mIVReader->buildTree(mSceneMgr, node);
404
405	mIVReader->collapse();
406	OGRE_DELETE(mIVReader);
407
408
409	std::stringstream d;
410	d << "loaded " << filename << " in " << timer->getMilliseconds() * 1e-3 << " secs";
411	LogManager::getSingleton().logMessage(d.str());
412
413	PlatformManager::getSingleton().destroyTimer(timer);
414
415	//-- bake into static geometry
416	if (USE_STATIC_GEOMETRY)
417	{
418	BakeSceneIntoStaticGeometry("staticVienna", "Vienna");
419	}
420
421	return true;
422	}
423
424	return false;
425	}
426	//--------------------------------------------------------
427	void TestCullingTerrainApplication::BakeSceneIntoStaticGeometry(const String &staticGeomName,
428	const String &nodeName)
429	{
430	#if OGRE_103
431	// note: different static geom for roofs, roads, ..., becazse they have same material
432	StaticGeometry *staticGeom = mSceneMgr->createStaticGeometry(staticGeomName);
433
434	// note: looping over entities here. why does scene node not work?
435	SceneManager::EntityIterator it = mSceneMgr->getEntityIterator();
436	while (it.hasMoreElements())
437	{
438	Entity *ent = it.getNext();
439	ent->setVisible(false);
440	staticGeom->addEntity(ent, ent->getParentSceneNode()->getPosition());
441	}
442
443	staticGeom->setRegionDimensions(Vector3(100,100,100));
444	staticGeom->build();
445
446	// cleanup node
447	//wallsNode->detachAllObjects();
448
449	//roofsNode->detachAllObjects();
450	//roadsNode->detachAllObjects();
451	//planeNode->detachAllObjects();
452
453	//viennaNode->removeChild("Walls");
454	mSceneMgr->destroySceneNode(nodeName);
455	#endif
456	}
457	//--------------------------------------------------------
458	void TestCullingTerrainApplication::createScene()
459	{
460	//-- load scene
461	loadConfig("terrainCulling.cfg");
462
463	/////////////////////////////////////
464
465	// Set ambient light
466	mAmbientLight = ColourValue(0.5, 0.5, 0.5);
467	mSceneMgr->setAmbientLight(mAmbientLight);
468
469	//-- create light
470	mSunLight = mSceneMgr->createLight("SunLight");
471	mSunLight->setType(Light::LT_DIRECTIONAL);
472	//mSunLight->setType(Light::LT_SPOTLIGHT);
473	//mSunLight->setSpotlightRange(Degree(30), Degree(50));
474
475	mSunLight->setPosition(707, 2000, 500);
476	mSunLight->setCastShadows(true);
477
478	// set light angle not too small over the surface, otherwise shadows textures will be broken
479	Vector3 dir(0.5, 1, 0.5);
480	dir.normalise();
481	mSunLight->setDirection(dir);
482	//mSunLight->setDirection(Vector3::NEGATIVE_UNIT_Y);
483	mSunLight->setDiffuseColour(1, 1, 1);
484	mSunLight->setSpecularColour(1, 1, 1);
485
486	// -- Fog
487	// NB it's VERY important to set this before calling setWorldGeometry
488	// because the vertex program picked will be different
489	ColourValue fadeColour(0.93, 0.86, 0.76);
490	mWindow->getViewport(0)->setBackgroundColour(fadeColour);
491	//mSceneMgr->setFog( FOG_LINEAR, fadeColour, .001, 500, 1000);
492
493	// Create a skybox
494	mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox", 5000, true);
495
496	if (msShowHillyTerrain)
497	{
498	std::string terrain_cfg("terrain.cfg");
499	#if OGRE_PLATFORM == OGRE_PLATFORM_APPLE
500	terrain_cfg = mResourcePath + terrain_cfg;
501	#endif
502	mSceneMgr->setWorldGeometry(terrain_cfg);
503	}
504
505
506	//-- CEGUI setup
507	setupGui();
508
509	// occluder plane to test visibility
510	if (0)
511	{
512	Plane plane;
513	plane.normal = Vector3::UNIT_Y;
514	plane.d = -60;
515
516	MeshManager::getSingleton().createPlane("Myplane",
517	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane,
518	5000,5000,100,100,true,1,5,5,Vector3::UNIT_Z);
519
520	Entity* pPlaneEnt = mSceneMgr->createEntity( "plane", "Myplane" );
521	pPlaneEnt->setMaterialName("Examples/Rockwall");
522	pPlaneEnt->setCastShadows(true);
523	mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(pPlaneEnt);
524	}
525
526	// Warning: In GL since we can't go higher than the window res
527	mSceneMgr->setShadowTextureSettings(1024, 2);
528
529	mSceneMgr->setShadowColour(ColourValue(0.5, 0.5, 0.5));
530
531	//-- terrain content setup
532
533	// HACK: necessary to call once before the content creation for
534	// terrain initialisation
535	mSceneMgr->_renderScene(mCamera, mWindow->getViewport(0), true);
536
537	// ray query executor: needed to clamp to terrain
538	mRayQueryExecutor = new RayQueryExecutor(mSceneMgr);
539
540	mTerrainMinPos = EntityState::msMinPos = Vector3(0, 0, 0);
541	mTerrainMaxPos = EntityState::msMaxPos = Vector3(5000, 5000, 5000);
542
543	mTerrainContentGenerator = new TerrainContentGenerator(mSceneMgr);
544
545	if (!msShowHillyTerrain)
546	return;
547
548	// if no objects in file, we generate new objects
549	if (!mTerrainContentGenerator->LoadObjects("objects.out"))
550	{
551	// the objects are generated randomly distributed over the terrain
552	if (1) generateScene(1500, 0); // create robots
553	if (0) generateScene(100, 1); // create trees
554	if (0) generateScene(100, 2); // create ninjas
555	}
556	}
557	//-----------------------------------------------------------------------
558	void TestCullingTerrainApplication::generateScene(int num, int objectType)
559	{
560	float val = TerrainFrameListener::msObjectScales[objectType];
561	Vector3 scale(val, val, val);
562	const float maxHeight = 75;
563
564	// In order to provide much occlusion,
565	// height is restricted to maxHeight => no objects are created on peaks
566	mTerrainContentGenerator->SetMinPos(Vector3(mTerrainMinPos));
567	mTerrainContentGenerator->SetMaxPos(Vector3(mTerrainMaxPos.x, maxHeight, mTerrainMaxPos.z));
568
569	//std::stringstream d; d << "objscale: " << scale[0];
570	//Ogre::LogManager::getSingleton().logMessage(d.str());
571
572	mTerrainContentGenerator->SetScale(scale);
573	mTerrainContentGenerator->SetOffset(TerrainFrameListener::msObjectTerrainOffsets[objectType]);
574	mTerrainContentGenerator->GenerateScene(num, TerrainFrameListener::msObjectCaptions[objectType]);
575
576	if (objectType != 0) // from our objects, only robot has animation phases
577	return;
578
579	EntityList *entList = mTerrainContentGenerator->GetGeneratedEntities();
580
581	//-- add animation state for new robots (located at the end of the list)
582	for (int i = (int)entList->size() - num; i < (int)entList->size(); ++i)
583	{
584	mEntityStates.push_back(new EntityState((*entList)[i],
585	EntityState::WAITING, Math::RangeRandom(0.5, 1.5)));
586	}
587
588	// release limitations on height => it is possible for the user to put single
589	// objects on peaks of the terrain (will be only few, not relevant for occlusion)
590	mTerrainContentGenerator->SetMaxPos(mTerrainMaxPos);
591	}
592	//-----------------------------------------------------------------------
593	void TestCullingTerrainApplication::updateAnimations(Real timeSinceLastFrame)
594	{
595	for (int i = 0; i < (int)mEntityStates.size(); ++i)
596	{
597	SceneNode *sn = mEntityStates[i]->GetEntity()->getParentSceneNode();
598
599	mEntityStates[i]->update(timeSinceLastFrame);
600
601	if (mEntityStates[i]->GetState() == EntityState::MOVING)
602	{
603	Clamp2Terrain(sn, 0); //sn->setNodeVisible(false);
604	}
605	}
606	}
607	//-----------------------------------------------------------------------
608	EntityStates &TestCullingTerrainApplication::getEntityStates()
609	{
610	return mEntityStates;
611	}
612	//-----------------------------------------------------------------------
613	void TestCullingTerrainApplication::setupGui()
614	{
615	#if OGRE103
616	mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY,
617	false, 3000, ST_EXTERIOR_CLOSE);
618	#else
619	mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY,
620	false, 3000, mSceneMgr);
621	#endif
622	mGUISystem = new CEGUI::System(mGUIRenderer);
623
624	// Mouse
625	CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLook.scheme");
626	CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");
627	mGUISystem->setDefaultMouseCursor((CEGUI::utf8*)"TaharezLook",
628	(CEGUI::utf8*)"MouseArrow");
629
630	CEGUI::MouseCursor::getSingleton().hide();
631	}
632	//-----------------------------------------------------------------------
633	void TestCullingTerrainApplication::createFrameListener()
634	{
635	mTerrainFrameListener = new TerrainFrameListener(mWindow, mCamera, mSceneMgr,
636	mGUIRenderer, mTerrainContentGenerator, mVizCamera, mCamNode, mSunLight, this);
637
638	mRoot->addFrameListener(mTerrainFrameListener);
639	}
640	//-----------------------------------------------------------------------
641	void TestCullingTerrainApplication::chooseSceneManager()
642	{
643	#ifdef OGRE_103
644	if (msShowHillyTerrain)
645	{
646	// Terrain scene manager
647	mSceneMgr = mRoot->getSceneManager(ST_EXTERIOR_CLOSE);
648	}
649	else
650	{ // octree scene manager
651	mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
652	}
653	#else
654	if (msShowHillyTerrain)
655	{
656	//mSceneMgr = mRoot->createSceneManager("TerrainSceneManager");
657	mSceneMgr = mRoot->createSceneManager("OcclusionCullingSceneManager");
658	//mSceneMgr = mRoot->createSceneManager("KdTreeSceneManager");
659	}
660	else
661	{
662	//mSceneMgr = mRoot->createSceneManager("OctreeSceneManager");
663	mSceneMgr = mRoot->createSceneManager("OcclusionCullingSceneManager");
664	//mSceneMgr = mRoot->createSceneManager("KdTreeSceneManager");
665	}
666
667	#endif
668	}
669	//-----------------------------------------------------------------------
670	bool TestCullingTerrainApplication::Clamp2Terrain(SceneNode *node, int terrainOffs)
671	{
672	// clamp scene node to terrain
673	Vector3 pos = node->getPosition();
674	Vector3 queryResult;
675
676	if (mRayQueryExecutor->executeRayQuery(&queryResult,
677	Vector3(pos.x, MAX_HEIGHT, pos.z), Vector3::NEGATIVE_UNIT_Y))
678	{
679	node->setPosition(pos.x, queryResult.y + terrainOffs, pos.z);
680	return true;
681	}
682
683	return false;
684	}
685
686	//-----------------------------------------------------------------------
687	bool TestCullingTerrainApplication::Clamp2FloorPlane()
688	{
689	// clamp to floor plane
690	RaySceneQuery *raySceneQuery = mSceneMgr->createRayQuery(
691	Ray(mCamNode->getPosition(), Vector3::NEGATIVE_UNIT_Y));
692
693	RaySceneQueryResult& qryResult = raySceneQuery->execute();
694
695	RaySceneQueryResult::iterator rit = qryResult.begin();
696
697	while (rit != qryResult.end() && rit->movable)
698	{
699	if (rit->movable->getName() != "PlayerCam")
700	{
701	mCamNode->setPosition(mCamNode->getPosition().x,
702	rit->movable->getWorldBoundingBox().getCenter().y + 2,
703	mCamNode->getPosition().z);
704
705	/*
706	std::stringstream d;
707	d << "World: " << it->movable->getWorldBoundingBox().getCenter().y <<
708	", Object: " << it->movable->getBoundingBox().getCenter().y <<
709	", Camera: " << mCamera->getDerivedPosition();
710
711	LogManager::getSingleton().logMessage(d.str());*/
712
713	return true;
714	}
715
716	++ rit;
717	}
718
719	OGRE_DELETE(raySceneQuery);
720	return false;
721	}
722
723	//-----------------------------------------------------------------------
724	// splits strings containing multiple file names
725	static int SplitFilenames(const std::string str, std::vector<std::string> &filenames)
726	{
727	int pos = 0;
728
729	while(1)
730	{
731	int npos = (int)str.find(';', pos);
732
733	if (npos < 0 \|\| npos - pos < 1)
734	break;
735	filenames.push_back(std::string(str, pos, npos - pos));
736	pos = npos + 1;
737	}
738
739	filenames.push_back(std::string(str, pos, str.size() - pos));
740	return (int)filenames.size();
741	}
742
743	//-----------------------------------------------------------------------
744	bool TestCullingTerrainApplication::LoadScene(const String &filename)
745	{
746	using namespace std;
747	// use leaf nodes of the original spatial hierarchy as occludees
748	vector<string> filenames;
749	int files = SplitFilenames(filename, filenames);
750
751	std::stringstream d;
752	d << "number of input files: " << files << "\n";
753	LogManager::getSingleton().logMessage(d.str());
754
755	bool result = false;
756	vector<string>::const_iterator fit, fit_end = filenames.end();
757	int i = 0;
758	// root for different files
759	for (fit = filenames.begin(); fit != fit_end; ++ fit, ++ i)
760	{
761	const string fn = *fit;
762
763	if (strstr(fn.c_str(), ".iv") \|\| strstr(fn.c_str(), ".wrl"))
764	{
765	// hack: set postion manually for vienna
766	//mCamNode->setPosition(Vector3(830, 300, -540));
767	//mCamNode->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
768
769	// load iv files
770	if (!LoadSceneIV(fn, mSceneMgr->getRootSceneNode(), i))
771	{
772	// terrain hack
773	msShowHillyTerrain = true;
774	LogManager::getSingleton().logMessage("error loading scene. loading terrain instead");
775	}
776	}
777	else if (strstr(filename.c_str(), ".dae"))
778	{
779	// load collada files
780	// load iv files
781	LoadSceneCollada(fn, mSceneMgr->getRootSceneNode(), i);
782	}
783	else //if (filename == "terrain")
784	{
785	// terrain hack
786	msShowHillyTerrain = true;
787	LogManager::getSingleton().logMessage("loading terrain");
788	}
789
790	result = true;
791	}
792
793
794	/*
795	if (result)
796	{
797	int intersectables, faces;
798
799	std::stringstream d;
800	d << filename << " parsed successfully.\n"
801	<< "#NUM_OBJECTS (Total numner of objects)\n" << intersectables << "\n"
802	<< "#NUM_FACES (Total numner of faces)\n" << faces << "\n";
803	}
804	*/
805
806	return result;
807	}
808	//-----------------------------------------------------------------------
809	bool TestCullingTerrainApplication::LoadViewCells(const String &filename)
810	{
811	LogManager::getSingleton().logMessage("loading view cells");
812
813	//-- the actual loading happens here
814	return mSceneMgr->setOption("LoadViewCells", filename.c_str());
815	}
816
817
818	/**********************************************************************/
819	/* VisualizationRenderTargetListener implementation */
820	/**********************************************************************/
821
822
823	//-----------------------------------------------------------------------
824	VisualizationRenderTargetListener::VisualizationRenderTargetListener(SceneManager *sceneMgr)
825	:RenderTargetListener(), mSceneMgr(sceneMgr)
826	{
827	}
828	//-----------------------------------------------------------------------
829	void VisualizationRenderTargetListener::preViewportUpdate(const RenderTargetViewportEvent &evt)
830	{
831	// visualization viewport
832	const bool showViz = evt.source->getZOrder() == VIZ_VIEWPORT_Z_ORDER;
833	const bool nShowViz = !showViz;
834
835	mSavedShadowTechnique = mSceneMgr->getShadowTechnique();
836	mSavedAmbientLight = mSceneMgr->getAmbientLight();
837
838	// -- ambient light must be full for visualization, shadows disabled
839	if (showViz)
840	{
841	mSceneMgr->setAmbientLight(ColourValue(1, 1, 1));
842	mSceneMgr->setShadowTechnique(SHADOWTYPE_NONE);
843	}
844
845	mSceneMgr->setOption("PrepareVisualization", &showViz);
846	mSceneMgr->setOption("SkyBoxEnabled", &nShowViz);
847	//mSceneMgr->setOption("SkyPlaneEnabled", &showViz);
848
849	RenderTargetListener::preViewportUpdate(evt);
850	}
851	//-----------------------------------------------------------------------
852	void VisualizationRenderTargetListener::postRenderTargetUpdate(const RenderTargetEvent &evt)
853	{
854	// reset values
855	mSceneMgr->setShadowTechnique(mSavedShadowTechnique);
856	mSceneMgr->setAmbientLight(mSavedAmbientLight);
857
858	RenderTargetListener::postRenderTargetUpdate(evt);
859	}
860	//-----------------------------------------------------------------------
861	INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
862	{
863	// Create application object
864	TestCullingTerrainApplication app;
865
866	try
867	{
868	app.go();
869	}
870	catch( Ogre::Exception& e )
871	{
872	MessageBox( NULL, e.getFullDescription().c_str(),
873	"An exception has occured!", MB_OK \| MB_ICONERROR \| MB_TASKMODAL);
874	}
875
876	return 0;
877	}

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