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source: OGRE/trunk/ogre_changes/Ogre1.2/OgreMain/include/OgreSceneManager.h @ 768

Revision 768, 118.0 KB checked in by szirmay, 18 years ago (diff)

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1	/*-------------------------------------------------------------------------
2	This source file is a part of OGRE
3	(Object-oriented Graphics Rendering Engine)
4
5	For the latest info, see http://www.ogre3d.org/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This library is free software; you can redistribute it and/or modify it
11	under the terms of the GNU Lesser General Public License (LGPL) as
12	published by the Free Software Foundation; either version 2.1 of the
13	License, or (at your option) any later version.
14
15	This library is distributed in the hope that it will be useful, but
16	WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17	or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18	License for more details.
19
20	You should have received a copy of the GNU Lesser General Public License
21	along with this library; if not, write to the Free Software Foundation,
22	Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA or go to
23	http://www.gnu.org/copyleft/lesser.txt
24	-------------------------------------------------------------------------*/
25	#ifndef __SceneManager_H__
26	#define __SceneManager_H__
27
28	// Precompiler options
29	#include "OgrePrerequisites.h"
30
31	#include "OgreString.h"
32	#include "OgreSceneNode.h"
33	#include "OgrePlane.h"
34	#include "OgreQuaternion.h"
35	#include "OgreColourValue.h"
36	#include "OgreCommon.h"
37	#include "OgreSceneQuery.h"
38	#include "OgreAutoParamDataSource.h"
39	#include "OgreAnimationState.h"
40	#include "OgreRenderQueue.h"
41	#include "OgreRenderQueueSortingGrouping.h"
42	#include "OgreRectangle2D.h"
43	#include "OgrePixelFormat.h"
44	#include "OgreResourceGroupManager.h"
45	#include "OgreTexture.h"
46
47	namespace Ogre {
48
49	/** Structure for holding a position & orientation pair. */
50	struct ViewPoint
51	{
52	Vector3 position;
53	Quaternion orientation;
54	};
55
56	// Forward declarations
57	class DefaultIntersectionSceneQuery;
58	class DefaultRaySceneQuery;
59	class DefaultSphereSceneQuery;
60	class DefaultAxisAlignedBoxSceneQuery;
61
62	/** Interface definition for classes which can listen in on the process
63	of rendering shadows, in order to implement custom behaviour.
64	*/
65	class _OgreExport ShadowListener
66	{
67	public:
68	ShadowListener() {}
69	virtual ~ShadowListener() {}
70
71	/** Event raised after all shadow textures have been rendered into for
72	all queues / targets but before any other geometry has been rendered
73	(including main scene geometry and any additional shadow receiver
74	passes).
75	@remarks
76	This callback is useful for those that wish to perform some
77	additional processing on shadow textures before they are used to
78	render shadows. For example you could perform some filtering by
79	rendering the existing shadow textures into another alternative
80	shadow texture with a shader.]
81	@note
82	This event will only be fired when texture shadows are in use.
83	@param numberOfShadowTextures The number of shadow textures in use
84	*/
85	virtual void shadowTexturesUpdated(size_t numberOfShadowTextures) = 0;
86
87	/** This event occurs just before the view & projection matrices are
88	set for rendering into a shadow texture.
89	@remarks
90	You can use this event hook to perform some custom processing,
91	such as altering the camera being used for rendering the light's
92	view, including setting custom view & projection matrices if you
93	want to perform an advanced shadow technique.
94	@note
95	This event will only be fired when texture shadows are in use.
96	@param light Pointer to the light for which shadows are being rendered
97	@param camera Pointer to the camera being used to render
98	*/
99	virtual void shadowTextureCasterPreViewProj(Light* light,
100	Camera* camera) = 0;
101	/** This event occurs just before the view & projection matrices are
102	set for re-rendering a shadow receiver.
103	@remarks
104	You can use this event hook to perform some custom processing,
105	such as altering the projection frustum being used for rendering
106	the shadow onto the receiver to perform an advanced shadow
107	technique.
108	@note
109	This event will only be fired when texture shadows are in use.
110	@param light Pointer to the light for which shadows are being rendered
111	@param frustum Pointer to the projection frustum being used to project
112	the shadow texture
113	*/
114	virtual void shadowTextureReceiverPreViewProj(Light* light,
115	Frustum* frustum) = 0;
116
117	};
118
119	/** Manages the organisation and rendering of a 'scene' i.e. a collection
120	of objects and potentially world geometry.
121	@remarks
122	This class defines the interface and the basic behaviour of a
123	'Scene Manager'. A SceneManager organises the culling and rendering of
124	the scene, in conjunction with the RenderQueue. This class is designed
125	to be extended through subclassing in order to provide more specialised
126	scene organisation structures for particular needs. The default
127	SceneManager culls based on a hierarchy of node bounding boxes, other
128	implementations can use an octree (@see OctreeSceneManager), a BSP
129	tree (@see BspSceneManager), and many other options. New SceneManager
130	implementations can be added at runtime by plugins, see
131	SceneManagerEnumerator for the interfaces for adding new SceneManager
132	types.
133	@par
134	There is a distinction between 'objects' (which subclass MovableObject,
135	and are movable, discrete objects in the world), and 'world geometry',
136	which is large, generally static geometry. World geometry tends to
137	influence the SceneManager organisational structure (e.g. lots of indoor
138	static geometry might result in a spatial tree structure) and as such
139	world geometry is generally tied to a given SceneManager implementation,
140	whilst MovableObject instances can be used with any SceneManager.
141	Subclasses are free to define world geometry however they please.
142	@par
143	Multiple SceneManager instances can exist at one time, each one with
144	a distinct scene. Which SceneManager is used to render a scene is
145	dependent on the Camera, which will always call back the SceneManager
146	which created it to render the scene.
147	*/
148	class _OgreExport SceneManager
149	{
150	public:
151	/// Query type mask which will be used for world geometry @see SceneQuery
152	static uint32 WORLD_GEOMETRY_TYPE_MASK;
153	/// Query type mask which will be used for entities @see SceneQuery
154	static uint32 ENTITY_TYPE_MASK;
155	/// Query type mask which will be used for effects like billboardsets / particle systems @see SceneQuery
156	static uint32 FX_TYPE_MASK;
157	/// Query type mask which will be used for StaticGeometry @see SceneQuery
158	static uint32 STATICGEOMETRY_TYPE_MASK;
159	/// Query type mask which will be used for lights @see SceneQuery
160	static uint32 LIGHT_TYPE_MASK;
161	/// User type mask limit
162	static uint32 USER_TYPE_MASK_LIMIT;
163	/** Comparator for material map, for sorting materials into render order (e.g. transparent last).
164	*/
165	struct materialLess
166	{
167	_OgreExport bool operator()(const Material* x, const Material* y) const;
168	};
169	/// Comparator for sorting lights relative to a point
170	struct lightLess
171	{
172	_OgreExport bool operator()(const Light* a, const Light* b) const;
173	};
174
175	/// Describes the stage of rendering when performing complex illumination
176	enum IlluminationRenderStage
177	{
178	/// No special illumination stage
179	IRS_NONE,
180	/// Render to texture stage, used for texture based shadows
181	IRS_RENDER_TO_TEXTURE,
182	/// Render from shadow texture to receivers stage
183	IRS_RENDER_RECEIVER_PASS
184	};
185
186	/** Enumeration of the possible modes allowed for processing the special case
187	render queue list.
188	@see SceneManager::setSpecialCaseRenderQueueMode
189	*/
190	enum SpecialCaseRenderQueueMode
191	{
192	/// Render only the queues in the special case list
193	SCRQM_INCLUDE,
194	/// Render all except the queues in the special case list
195	SCRQM_EXCLUDE
196	};
197
198	typedef struct SkyDomeGenParameters
199	{
200	Real skyDomeCurvature;
201	Real skyDomeTiling;
202	Real skyDomeDistance;
203	int skyDomeXSegments;
204	int skyDomeYSegments;
205	int skyDomeYSegments_keep;
206	};
207
208	struct SkyPlaneGenParameters
209	{
210	Real skyPlaneScale;
211	Real skyPlaneTiling;
212	Real skyPlaneBow;
213	int skyPlaneXSegments;
214	int skyPlaneYSegments;
215	};
216
217	struct SkyBoxGenParameters
218	{
219	Real skyBoxDistance;
220	};
221	protected:
222	/// Instance name
223	String mName;
224
225	/// Queue of objects for rendering
226	RenderQueue* mRenderQueue;
227
228	/// Current ambient light, cached for RenderSystem
229	ColourValue mAmbientLight;
230
231	/// The rendering system to send the scene to
232	RenderSystem *mDestRenderSystem;
233
234	typedef std::map<String, Camera* > CameraList;
235
236	/** Central list of cameras - for easy memory management and lookup.
237	*/
238	CameraList mCameras;
239
240	typedef std::map<String, StaticGeometry* > StaticGeometryList;
241	StaticGeometryList mStaticGeometryList;
242
243	typedef std::map<String, SceneNode*> SceneNodeList;
244
245	/** Central list of SceneNodes - for easy memory management.
246	@note
247	Note that this list is used only for memory management; the structure of the scene
248	is held using the hierarchy of SceneNodes starting with the root node. However you
249	can look up nodes this way.
250	*/
251	SceneNodeList mSceneNodes;
252
253	/// Camera in progress
254	Camera* mCameraInProgress;
255	/// Current Viewport
256	Viewport* mCurrentViewport;
257
258	/// Root scene node
259	SceneNode* mSceneRoot;
260
261	/// Autotracking scene nodes
262	typedef std::set<SceneNode*> AutoTrackingSceneNodes;
263	AutoTrackingSceneNodes mAutoTrackingSceneNodes;
264
265	// Sky params
266	// Sky plane
267	Entity* mSkyPlaneEntity;
268	Entity* mSkyDomeEntity[5];
269	Entity* mSkyBoxEntity[6];
270
271	SceneNode* mSkyPlaneNode;
272	SceneNode* mSkyDomeNode;
273	SceneNode* mSkyBoxNode;
274
275	bool mSkyPlaneEnabled;
276	bool mSkyPlaneDrawFirst;
277	Plane mSkyPlane;
278	SceneManager::SkyPlaneGenParameters mSkyPlaneGenParameters;
279	// Sky box
280	bool mSkyBoxEnabled;
281	bool mSkyBoxDrawFirst;
282	Quaternion mSkyBoxOrientation;
283	SceneManager::SkyBoxGenParameters mSkyBoxGenParameters;
284	// Sky dome
285	bool mSkyDomeEnabled;
286	bool mSkyDomeDrawFirst;
287	Quaternion mSkyDomeOrientation;
288	SceneManager::SkyDomeGenParameters mSkyDomeGenParameters;
289
290	// Fog
291	FogMode mFogMode;
292	ColourValue mFogColour;
293	Real mFogStart;
294	Real mFogEnd;
295	Real mFogDensity;
296
297	typedef std::set<uint8> SpecialCaseRenderQueueList;
298	SpecialCaseRenderQueueList mSpecialCaseQueueList;
299	SpecialCaseRenderQueueMode mSpecialCaseQueueMode;
300	uint8 mWorldGeometryRenderQueue;
301
302	unsigned long mLastFrameNumber;
303	Matrix4 mTempXform[256];
304	bool mResetIdentityView;
305	bool mResetIdentityProj;
306
307	typedef std::map<String, MovableObject*> MovableObjectMap;
308	typedef std::map<String, MovableObjectMap*> MovableObjectCollectionMap;
309	MovableObjectCollectionMap mMovableObjectCollectionMap;
310	MovableObjectMap* getMovableObjectMap(const String& typeName);
311
312	/** Internal method for initialising the render queue.
313	@remarks
314	Subclasses can use this to install their own RenderQueue implementation.
315	*/
316	virtual void initRenderQueue(void);
317	/// A pass designed to let us render shadow colour on white for texture shadows
318	Pass* mShadowCasterPlainBlackPass;
319	/// A pass designed to let us render shadow receivers for texture shadows
320	Pass* mShadowReceiverPass;
321	/** Internal method for turning a regular pass into a shadow caster pass.
322	@remarks
323	This is only used for texture shadows, basically we're trying to
324	ensure that objects are rendered solid black.
325	This method will usually return the standard solid black pass for
326	all fixed function passes, but will merge in a vertex program
327	and fudge the AutpoParamDataSource to set black lighting for
328	passes with vertex programs.
329	*/
330	const Pass* deriveShadowCasterPass(const Pass* pass);
331	/** Internal method for turning a regular pass into a shadow receiver pass.
332	@remarks
333	This is only used for texture shadows, basically we're trying to
334	ensure that objects are rendered with a projective texture.
335	This method will usually return a standard single-texture pass for
336	all fixed function passes, but will merge in a vertex program
337	for passes with vertex programs.
338	*/
339	const Pass* deriveShadowReceiverPass(const Pass* pass);
340
341	/** Internal method to validate whether a Pass should be allowed to render.
342	@remarks
343	Called just before a pass is about to be used for rendering a group to
344	allow the SceneManager to omit it if required. A return value of false
345	skips this pass.
346	*/
347	bool validatePassForRendering(const Pass* pass);
348
349	/** Internal method to validate whether a Renderable should be allowed to render.
350	@remarks
351	Called just before a pass is about to be used for rendering a Renderable to
352	allow the SceneManager to omit it if required. A return value of false
353	skips it.
354	*/
355	bool validateRenderableForRendering(const Pass* pass, const Renderable* rend);
356
357	enum BoxPlane
358	{
359	BP_FRONT = 0,
360	BP_BACK = 1,
361	BP_LEFT = 2,
362	BP_RIGHT = 3,
363	BP_UP = 4,
364	BP_DOWN = 5
365	};
366
367	/* Internal utility method for creating the planes of a skybox.
368	*/
369	MeshPtr createSkyboxPlane(
370	BoxPlane bp,
371	Real distance,
372	const Quaternion& orientation,
373	const String& groupName);
374
375	/* Internal utility method for creating the planes of a skydome.
376	*/
377	MeshPtr createSkydomePlane(
378	BoxPlane bp,
379	Real curvature, Real tiling, Real distance,
380	const Quaternion& orientation,
381	int xsegments, int ysegments, int ySegmentsToKeep,
382	const String& groupName);
383
384	// Flag indicating whether SceneNodes will be rendered as a set of 3 axes
385	bool mDisplayNodes;
386
387	/// Storage of animations, lookup by name
388	typedef std::map<String, Animation*> AnimationList;
389	AnimationList mAnimationsList;
390	AnimationStateSet mAnimationStates;
391
392	/** Internal method used by _renderSingleObject to deal with renderables
393	which override the camera's own view / projection materices. */
394	void useRenderableViewProjMode(const Renderable* pRend);
395
396	/** Internal method used by _renderSingleObject to deal with renderables
397	which override the camera's own view / projection matrices. */
398	void resetViewProjMode(void);
399
400	typedef std::vector<RenderQueueListener*> RenderQueueListenerList;
401	RenderQueueListenerList mRenderQueueListeners;
402
403	typedef std::vector<ShadowListener*> ShadowListenerList;
404	ShadowListenerList mShadowListeners;
405	/// Internal method for firing the queue start event, returns true if queue is to be skipped
406	bool fireRenderQueueStarted(uint8 id, const String& invocation);
407	/// Internal method for firing the queue end event, returns true if queue is to be repeated
408	bool fireRenderQueueEnded(uint8 id, const String& invocation);
409
410	/// Internal method for firing the texture shadows updated event
411	void fireShadowTexturesUpdated(size_t numberOfShadowTextures);
412	/// Internal method for firing the pre caster texture shadows event
413	void fireShadowTexturesPreCaster(Light* light, Camera* camera);
414	/// Internal method for firing the pre receiver texture shadows event
415	void fireShadowTexturesPreReceiver(Light* light, Frustum* f);
416	/** Internal method for setting the destination viewport for the next render. */
417	virtual void setViewport(Viewport *vp);
418
419	/** Flag that indicates if all of the scene node's bounding boxes should be shown as a wireframe. */
420	bool mShowBoundingBoxes;
421
422	/** Internal method for rendering all objects using the default queue sequence. */
423	virtual void renderVisibleObjectsDefaultSequence(void);
424	/** Internal method for rendering all objects using a custom queue sequence. */
425	virtual void renderVisibleObjectsCustomSequence(RenderQueueInvocationSequence* s);
426	/** Internal method for preparing the render queue for use with each render. */
427	virtual void prepareRenderQueue(void);
428
429
430	/** Internal utility method for rendering a single object.
431	@remarks
432	Assumes that the pass has already been set up.
433	@param rend The renderable to issue to the pipeline
434	@param pass The pass which is being used
435	@param doLightIteration If true, this method will issue the renderable to
436	the pipeline possibly multiple times, if the pass indicates it should be
437	done once per light
438	@param manualLightList Only applicable if doLightIteration is false, this
439	method allows you to pass in a previously determined set of lights
440	which will be used for a single render of this object.
441	*/
442	virtual void renderSingleObject(const Renderable* rend, const Pass* pass,
443	bool doLightIteration, const LightList* manualLightList = 0);
444
445	/// Utility class for calculating automatic parameters for gpu programs
446	AutoParamDataSource mAutoParamDataSource;
447
448	ShadowTechnique mShadowTechnique;
449	bool mDebugShadows;
450	ColourValue mShadowColour;
451	Pass* mShadowDebugPass;
452	Pass* mShadowStencilPass;
453	Pass* mShadowModulativePass;
454	bool mShadowMaterialInitDone;
455	LightList mLightsAffectingFrustum;
456	HardwareIndexBufferSharedPtr mShadowIndexBuffer;
457	size_t mShadowIndexBufferSize;
458	Rectangle2D* mFullScreenQuad;
459	Real mShadowDirLightExtrudeDist;
460	IlluminationRenderStage mIlluminationStage;
461	unsigned short mShadowTextureSize;
462	unsigned short mShadowTextureCount;
463	PixelFormat mShadowTextureFormat;
464	typedef std::vector<TexturePtr> ShadowTextureList;
465	ShadowTextureList mShadowTextures;
466	typedef std::vector<Camera*> ShadowTextureCameraList;
467	ShadowTextureCameraList mShadowTextureCameras;
468	Texture* mCurrentShadowTexture;
469	bool mShadowUseInfiniteFarPlane;
470
471	/** Internal method for locating a list of lights which could be affecting the frustum.
472	@remarks
473	Custom scene managers are encouraged to override this method to make use of their
474	scene partitioning scheme to more efficiently locate lights, and to eliminate lights
475	which may be occluded by word geometry.
476	*/
477	virtual void findLightsAffectingFrustum(const Camera* camera);
478	/// Internal method for setting up materials for shadows
479	virtual void initShadowVolumeMaterials(void);
480	/// Internal method for creating shadow textures (texture-based shadows)
481	virtual void createShadowTextures(unsigned short size, unsigned short count,
482	PixelFormat fmt);
483	/// Internal method for destroying shadow textures (texture-based shadows)
484	virtual void destroyShadowTextures(void);
485	/// Internal method for preparing shadow textures ready for use in a regular render
486	virtual void prepareShadowTextures(Camera* cam, Viewport* vp);
487
488	/** Internal method for rendering all the objects for a given light into the
489	stencil buffer.
490	@param light The light source
491	@param cam The camera being viewed from
492	*/
493	virtual void renderShadowVolumesToStencil(const Light* light, const Camera* cam);
494	/** Internal utility method for setting stencil state for rendering shadow volumes.
495	@param secondpass Is this the second pass?
496	@param zfail Should we be using the zfail method?
497	@param twosided Should we use a 2-sided stencil?
498	*/
499	virtual void setShadowVolumeStencilState(bool secondpass, bool zfail, bool twosided);
500	/** Render a set of shadow renderables. */
501	void renderShadowVolumeObjects(ShadowCaster::ShadowRenderableListIterator iShadowRenderables,
502	Pass* pass, const LightList *manualLightList, unsigned long flags,
503	bool secondpass, bool zfail, bool twosided);
504	typedef std::vector<ShadowCaster*> ShadowCasterList;
505	ShadowCasterList mShadowCasterList;
506	SphereSceneQuery* mShadowCasterSphereQuery;
507	AxisAlignedBoxSceneQuery* mShadowCasterAABBQuery;
508	Real mShadowFarDist;
509	Real mShadowFarDistSquared;
510	Real mShadowTextureOffset; // proportion of texture offset in view direction e.g. 0.4
511	Real mShadowTextureFadeStart; // as a proportion e.g. 0.6
512	Real mShadowTextureFadeEnd; // as a proportion e.g. 0.9
513	bool mShadowTextureSelfShadow;
514	Pass* mShadowTextureCustomCasterPass;
515	Pass* mShadowTextureCustomReceiverPass;
516	String mShadowTextureCustomCasterVertexProgram;
517	String mShadowTextureCustomReceiverVertexProgram;
518	GpuProgramParametersSharedPtr mShadowTextureCustomCasterVPParams;
519	GpuProgramParametersSharedPtr mShadowTextureCustomReceiverVPParams;
520	bool mShadowTextureCasterVPDirty;
521	bool mShadowTextureReceiverVPDirty;
522
523	/// Visibility mask used to show / hide objects
524	uint32 mVisibilityMask;
525	bool mFindVisibleObjects;
526
527	/// Suppress render state changes?
528	bool mSuppressRenderStateChanges;
529	/// Suppress shadows?
530	bool mSuppressShadows;
531
532
533	GpuProgramParametersSharedPtr mInfiniteExtrusionParams;
534	GpuProgramParametersSharedPtr mFiniteExtrusionParams;
535
536	/// Inner class to use as callback for shadow caster scene query
537	class _OgreExport ShadowCasterSceneQueryListener : public SceneQueryListener
538	{
539	protected:
540	SceneManager* mSceneMgr;
541	ShadowCasterList* mCasterList;
542	bool mIsLightInFrustum;
543	const PlaneBoundedVolumeList* mLightClipVolumeList;
544	const Camera* mCamera;
545	const Light* mLight;
546	Real mFarDistSquared;
547	public:
548	ShadowCasterSceneQueryListener(SceneManager* sm) : mSceneMgr(sm),
549	mCasterList(0), mIsLightInFrustum(false), mLightClipVolumeList(0),
550	mCamera(0) {}
551	// Prepare the listener for use with a set of parameters
552	void prepare(bool lightInFrustum,
553	const PlaneBoundedVolumeList* lightClipVolumes,
554	const Light* light, const Camera* cam, ShadowCasterList* casterList,
555	Real farDistSquared)
556	{
557	mCasterList = casterList;
558	mIsLightInFrustum = lightInFrustum;
559	mLightClipVolumeList = lightClipVolumes;
560	mCamera = cam;
561	mLight = light;
562	mFarDistSquared = farDistSquared;
563	}
564	bool queryResult(MovableObject* object);
565	bool queryResult(SceneQuery::WorldFragment* fragment);
566	};
567
568	ShadowCasterSceneQueryListener* mShadowCasterQueryListener;
569
570	/** Internal method for locating a list of shadow casters which
571	could be affecting the frustum for a given light.
572	@remarks
573	Custom scene managers are encouraged to override this method to add optimisations,
574	and to add their own custom shadow casters (perhaps for world geometry)
575	*/
576	virtual const ShadowCasterList& findShadowCastersForLight(const Light* light,
577	const Camera* camera);
578	/** Render a group in the ordinary way */
579	virtual void renderBasicQueueGroupObjects(RenderQueueGroup* pGroup,
580	QueuedRenderableCollection::OrganisationMode om);
581	/** Render a group with the added complexity of additive stencil shadows. */
582	virtual void renderAdditiveStencilShadowedQueueGroupObjects(RenderQueueGroup* group,
583	QueuedRenderableCollection::OrganisationMode om);
584	/** Render a group with the added complexity of modulative stencil shadows. */
585	virtual void renderModulativeStencilShadowedQueueGroupObjects(RenderQueueGroup* group,
586	QueuedRenderableCollection::OrganisationMode om);
587	/** Render a group rendering only shadow casters. */
588	virtual void renderTextureShadowCasterQueueGroupObjects(RenderQueueGroup* group,
589	QueuedRenderableCollection::OrganisationMode om);
590	/** Render a group rendering only shadow receivers. */
591	virtual void renderTextureShadowReceiverQueueGroupObjects(RenderQueueGroup* group,
592	QueuedRenderableCollection::OrganisationMode om);
593	/** Render a group with the added complexity of modulative texture shadows. */
594	virtual void renderModulativeTextureShadowedQueueGroupObjects(RenderQueueGroup* group,
595	QueuedRenderableCollection::OrganisationMode om);
596
597	/** Render a group with additive texture shadows. */
598	virtual void renderAdditiveTextureShadowedQueueGroupObjects(RenderQueueGroup* group,
599	QueuedRenderableCollection::OrganisationMode om);
600	/** Render a set of objects, see renderSingleObject for param definitions */
601	virtual void renderObjects(const QueuedRenderableCollection& objs,
602	QueuedRenderableCollection::OrganisationMode om,
603	bool doLightIteration, const LightList* manualLightList = 0);
604	/** Render those objects in the transparent pass list which have shadow casting forced on
605	@remarks
606	This function is intended to be used to render the shadows of transparent objects which have
607	transparency_casts_shadows set to 'on' in their material
608	*/
609	virtual void renderTransparentShadowCasterObjects(const QueuedRenderableCollection& objs,
610	QueuedRenderableCollection::OrganisationMode om,
611	bool doLightIteration, const LightList* manualLightList = 0);
612
613	/** Update the state of the global render queue splitting based on a shadow
614	option change. */
615	virtual void updateRenderQueueSplitOptions(void);
616	/** Update the state of the render queue group splitting based on a shadow
617	option change. */
618	virtual void updateRenderQueueGroupSplitOptions(RenderQueueGroup* group,
619	bool suppressShadows, bool suppressRenderState);
620
621	/** Inner helper class to implement the visitor pattern for rendering objects
622	in a queue.
623	*/
624	class _OgreExport SceneMgrQueuedRenderableVisitor : public QueuedRenderableVisitor
625	{
626	protected:
627	/// Pass that was actually used at the grouping level
628	const Pass* mUsedPass;
629	public:
630	SceneMgrQueuedRenderableVisitor()
631	:transparentShadowCastersMode(false) {}
632	~SceneMgrQueuedRenderableVisitor() {}
633	void visit(const Renderable* r);
634	bool visit(const Pass* p);
635	void visit(const RenderablePass* rp);
636
637	/// Target SM to send renderables to
638	SceneManager* targetSceneMgr;
639	/// Are we in transparent shadow caster mode?
640	bool transparentShadowCastersMode;
641	/// Automatic light handling?
642	bool autoLights;
643	/// Manual light list
644	const LightList* manualLightList;
645
646	};
647	/// Allow visitor helper to access protected methods
648	friend class SceneMgrQueuedRenderableVisitor;
649	/// The active renderable visitor class - subclasses could override this
650	SceneMgrQueuedRenderableVisitor* mActiveQueuedRenderableVisitor;
651	/// Storage for default renderable visitor
652	SceneMgrQueuedRenderableVisitor mDefaultQueuedRenderableVisitor;
653
654	public:
655	/** Constructor.
656	*/
657	SceneManager(const String& instanceName);
658
659	/** Default destructor.
660	*/
661	virtual ~SceneManager();
662
663	/** Return the instance name of this SceneManager. */
664	const String& getName(void) const { return mName; }
665
666	/** Retrieve the type name of this scene manager.
667	@remarks
668	This method has to be implemented by subclasses. It should
669	return the type name of this SceneManager which agrees with
670	the type name of the SceneManagerFactory which created it.
671	*/
672	virtual const String& getTypeName(void) const = 0;
673
674	/** Creates a camera to be managed by this scene manager.
675	@remarks
676	This camera must be added to the scene at a later time using
677	the attachObject method of the SceneNode class.
678	@param
679	name Name to give the new camera.
680	*/
681	virtual Camera* createCamera(const String& name);
682
683	/** Retrieves a pointer to the named camera.
684	*/
685	virtual Camera* getCamera(const String& name);
686
687	/** Removes a camera from the scene.
688	@remarks
689	This method removes a previously added camera from the scene.
690	The camera is deleted so the caller must ensure no references
691	to it's previous instance (e.g. in a SceneNode) are used.
692	@param
693	cam Pointer to the camera to remove
694	*/
695	virtual void destroyCamera(Camera *cam);
696
697	/** Removes a camera from the scene.
698	@remarks
699	This method removes an camera from the scene based on the
700	camera's name rather than a pointer.
701	*/
702	virtual void destroyCamera(const String& name);
703
704	/** Removes (and destroys) all cameras from the scene.
705	@remarks
706	Some cameras are internal created to dealing with texture shadow,
707	their aren't supposed to destroy outside. So, while you are using
708	texture shadow, don't call this method, or you can set the shadow
709	technique other than texture-based, which will destroy all internal
710	created shadow cameras and textures.
711	*/
712	virtual void destroyAllCameras(void);
713
714	/** Creates a light for use in the scene.
715	@remarks
716	Lights can either be in a fixed position and independent of the
717	scene graph, or they can be attached to SceneNodes so they derive
718	their position from the parent node. Either way, they are created
719	using this method so that the SceneManager manages their
720	existence.
721	@param
722	name The name of the new light, to identify it later.
723	*/
724	virtual Light* createLight(const String& name);
725
726	/** Returns a pointer to the named Light which has previously been added to the scene.
727	*/
728	virtual Light* getLight(const String& name);
729
730	/** Removes the named light from the scene and destroys it.
731	@remarks
732	Any pointers held to this light after calling this method will be invalid.
733	*/
734	virtual void destroyLight(const String& name);
735
736	/** Removes the light from the scene and destroys it based on a pointer.
737	@remarks
738	Any pointers held to this light after calling this method will be invalid.
739	*/
740	virtual void destroyLight(Light* light);
741	/** Removes and destroys all lights in the scene.
742	*/
743	virtual void destroyAllLights(void);
744
745	/** Populate a light list with an ordered set of the lights which are closest
746	to the position specified.
747	@remarks
748	Note that since directional lights have no position, they are always considered
749	closer than any point lights and as such will always take precedence.
750	@par
751	Subclasses of the default SceneManager may wish to take into account other issues
752	such as possible visibility of the light if that information is included in their
753	data structures. This basic scenemanager simply orders by distance, eliminating
754	those lights which are out of range.
755	@par
756	The number of items in the list max exceed the maximum number of lights supported
757	by the renderer, but the extraneous ones will never be used. In fact the limit will
758	be imposed by Pass::getMaxSimultaneousLights.
759	@param position The position at which to evaluate the list of lights
760	@param radius The bounding radius to test
761	@param destList List to be populated with ordered set of lights; will be cleared by
762	this method before population.
763	*/
764	virtual void _populateLightList(const Vector3& position, Real radius, LightList& destList);
765
766
767	/** Creates an instance of a SceneNode.
768	@remarks
769	Note that this does not add the SceneNode to the scene hierarchy.
770	This method is for convenience, since it allows an instance to
771	be created for which the SceneManager is responsible for
772	allocating and releasing memory, which is convenient in complex
773	scenes.
774	@par
775	To include the returned SceneNode in the scene, use the addChild
776	method of the SceneNode which is to be it's parent.
777	@par
778	Note that this method takes no parameters, and the node created is unnamed (it is
779	actually given a generated name, which you can retrieve if you want).
780	If you wish to create a node with a specific name, call the alternative method
781	which takes a name parameter.
782	*/
783	virtual SceneNode* createSceneNode(void);
784
785	/** Creates an instance of a SceneNode with a given name.
786	@remarks
787	Note that this does not add the SceneNode to the scene hierarchy.
788	This method is for convenience, since it allows an instance to
789	be created for which the SceneManager is responsible for
790	allocating and releasing memory, which is convenient in complex
791	scenes.
792	@par
793	To include the returned SceneNode in the scene, use the addChild
794	method of the SceneNode which is to be it's parent.
795	@par
796	Note that this method takes a name parameter, which makes the node easier to
797	retrieve directly again later.
798	*/
799	virtual SceneNode* createSceneNode(const String& name);
800
801	/** Destroys a SceneNode with a given name.
802	@remarks
803	This allows you to physically delete an individual SceneNode if you want to.
804	Note that this is not normally recommended, it's better to allow SceneManager
805	to delete the nodes when the scene is cleared.
806	*/
807	virtual void destroySceneNode(const String& name);
808
809	/** Gets the SceneNode at the root of the scene hierarchy.
810	@remarks
811	The entire scene is held as a hierarchy of nodes, which
812	allows things like relative transforms, general changes in
813	rendering state etc (See the SceneNode class for more info).
814	In this basic SceneManager class, the application using
815	Ogre is free to structure this hierarchy however it likes,
816	since it has no real significance apart from making transforms
817	relative to each node (more specialised subclasses will
818	provide utility methods for building specific node structures
819	e.g. loading a BSP tree).
820	@par
821	However, in all cases there is only ever one root node of
822	the hierarchy, and this method returns a pointer to it.
823	*/
824	virtual SceneNode* getRootSceneNode(void) const;
825
826	/** Retrieves a named SceneNode from the scene graph.
827	@remarks
828	If you chose to name a SceneNode as you created it, or if you
829	happened to make a note of the generated name, you can look it
830	up wherever it is in the scene graph using this method.
831	*/
832	virtual SceneNode* getSceneNode(const String& name) const;
833
834	/** Create an Entity (instance of a discrete mesh).
835	@param
836	entityName The name to be given to the entity (must be unique).
837	@param
838	meshName The name of the Mesh it is to be based on (e.g. 'knot.oof'). The
839	mesh will be loaded if it is not already.
840	*/
841	virtual Entity* createEntity(const String& entityName, const String& meshName);
842
843	/** Prefab shapes available without loading a model.
844	@note
845	Minimal implementation at present.
846	@todo
847	Add more prefabs (teapots, teapots!!!)
848	*/
849	enum PrefabType {
850	PT_PLANE
851	};
852
853	/** Create an Entity (instance of a discrete mesh) from a range of prefab shapes.
854	@param
855	entityName The name to be given to the entity (must be unique).
856	@param
857	ptype The prefab type.
858	*/
859	virtual Entity* createEntity(const String& entityName, PrefabType ptype);
860	/** Retrieves a pointer to the named Entity. */
861	virtual Entity* getEntity(const String& name);
862
863	/** Removes & destroys an Entity from the SceneManager.
864	@warning
865	Must only be done if the Entity is not attached
866	to a SceneNode. It may be safer to wait to clear the whole
867	scene if you are unsure use clearScene.
868	@see
869	SceneManager::clearScene
870	*/
871	virtual void destroyEntity(Entity* ent);
872
873	/** Removes & destroys an Entity from the SceneManager by name.
874	@warning
875	Must only be done if the Entity is not attached
876	to a SceneNode. It may be safer to wait to clear the whole
877	scene if you are unsure use clearScene.
878	@see
879	SceneManager::clearScene
880	*/
881	virtual void destroyEntity(const String& name);
882
883	/** Removes & destroys all Entities.
884	@warning
885	Again, use caution since no Entity must be referred to
886	elsewhere e.g. attached to a SceneNode otherwise a crash
887	is likely. Use clearScene if you are unsure (it clears SceneNode
888	entries too.)
889	@see
890	SceneManager::clearScene
891	*/
892	virtual void destroyAllEntities(void);
893
894	/** Create a ManualObject, an object which you populate with geometry
895	manually through a GL immediate-mode style interface.
896	@param
897	name The name to be given to the object (must be unique).
898	*/
899	virtual ManualObject* createManualObject(const String& name);
900	/** Retrieves a pointer to the named ManualObject. */
901	virtual ManualObject* getManualObject(const String& name);
902
903	/** Removes & destroys a ManualObject from the SceneManager.
904	*/
905	virtual void destroyManualObject(ManualObject* obj);
906	/** Removes & destroys a ManualObject from the SceneManager.
907	*/
908	virtual void destroyManualObject(const String& name);
909	/** Removes & destroys all ManualObjects from the SceneManager.
910	*/
911	virtual void destroyAllManualObjects(void);
912	/** Create a BillboardChain, an object which you can use to render
913	a linked chain of billboards.
914	@param
915	name The name to be given to the object (must be unique).
916	*/
917	virtual BillboardChain* createBillboardChain(const String& name);
918	/** Retrieves a pointer to the named BillboardChain. */
919	virtual BillboardChain* getBillboardChain(const String& name);
920
921	/** Removes & destroys a BillboardChain from the SceneManager.
922	*/
923	virtual void destroyBillboardChain(BillboardChain* obj);
924	/** Removes & destroys a BillboardChain from the SceneManager.
925	*/
926	virtual void destroyBillboardChain(const String& name);
927	/** Removes & destroys all BillboardChains from the SceneManager.
928	*/
929	virtual void destroyAllBillboardChains(void);
930	/** Create a RibbonTrail, an object which you can use to render
931	a linked chain of billboards which follows one or more nodes.
932	@param
933	name The name to be given to the object (must be unique).
934	*/
935	virtual RibbonTrail* createRibbonTrail(const String& name);
936	/** Retrieves a pointer to the named RibbonTrail. */
937	virtual RibbonTrail* getRibbonTrail(const String& name);
938
939	/** Removes & destroys a RibbonTrail from the SceneManager.
940	*/
941	virtual void destroyRibbonTrail(RibbonTrail* obj);
942	/** Removes & destroys a RibbonTrail from the SceneManager.
943	*/
944	virtual void destroyRibbonTrail(const String& name);
945	/** Removes & destroys all RibbonTrails from the SceneManager.
946	*/
947	virtual void destroyAllRibbonTrails(void);
948
949	/** Creates a particle system based on a template.
950	@remarks
951	This method creates a new ParticleSystem instance based on the named template
952	(defined through ParticleSystemManager::createTemplate) and returns a
953	pointer to the caller. The caller should not delete this object, it will be freed at system shutdown,
954	or can be released earlier using the destroyParticleSystem method.
955	@par
956	Each system created from a template takes the template's settings at the time of creation,
957	but is completely separate from the template from there on.
958	@par
959	Creating a particle system does not make it a part of the scene. As with other MovableObject
960	subclasses, a ParticleSystem is not rendered until it is attached to a SceneNode.
961	@par
962	This is probably the more useful particle system creation method since it does not require manual
963	setup of the system. Note that the initial quota is based on the template but may be changed later.
964	@param
965	name The name to give the new particle system instance.
966	@param
967	templateName The name of the template to base the new instance on.
968	*/
969	virtual ParticleSystem* createParticleSystem(const String& name,
970	const String& templateName);
971	/** Create a blank particle system.
972	@remarks
973	This method creates a new, blank ParticleSystem instance and returns a pointer to it.
974	The caller should not delete this object, it will be freed at system shutdown, or can
975	be released earlier using the destroyParticleSystem method.
976	@par
977	The instance returned from this method won't actually do anything because on creation a
978	particle system has no emitters. The caller should manipulate the instance through it's
979	ParticleSystem methods to actually create a real particle effect.
980	@par
981	Creating a particle system does not make it a part of the scene. As with other MovableObject
982	subclasses, a ParticleSystem is not rendered until it is attached to a SceneNode.
983	@param
984	name The name to give the ParticleSystem.
985	@param
986	quota The maximum number of particles to allow in this system.
987	@param
988	resourceGroup The resource group which will be used to load dependent resources
989	*/
990	virtual ParticleSystem* createParticleSystem(const String& name,
991	size_t quota = 500,
992	const String& resourceGroup = ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
993	/** Retrieves a pointer to the named ParticleSystem. */
994	virtual ParticleSystem* getParticleSystem(const String& name);
995
996	/** Removes & destroys a ParticleSystem from the SceneManager.
997	*/
998	virtual void destroyParticleSystem(ParticleSystem* obj);
999	/** Removes & destroys a ParticleSystem from the SceneManager.
1000	*/
1001	virtual void destroyParticleSystem(const String& name);
1002	/** Removes & destroys all ParticleSystems from the SceneManager.
1003	*/
1004	virtual void destroyAllParticleSystems(void);
1005
1006	/** Empties the entire scene, inluding all SceneNodes, Entities, Lights,
1007	BillboardSets etc. Cameras are not deleted at this stage since
1008	they are still referenced by viewports, which are not destroyed during
1009	this process.
1010	*/
1011	virtual void clearScene(void);
1012
1013	/** Sets the ambient light level to be used for the scene.
1014	@remarks
1015	This sets the colour and intensity of the ambient light in the scene, i.e. the
1016	light which is 'sourceless' and illuminates all objects equally.
1017	The colour of an object is affected by a combination of the light in the scene,
1018	and the amount of light that object reflects (in this case based on the Material::ambient
1019	property).
1020	@remarks
1021	By default the ambient light in the scene is ColourValue::Black, i.e. no ambient light. This
1022	means that any objects rendered with a Material which has lighting enabled (see Material::setLightingEnabled)
1023	will not be visible unless you have some dynamic lights in your scene.
1024	*/
1025	void setAmbientLight(const ColourValue& colour);
1026
1027	/** Returns the ambient light level to be used for the scene.
1028	*/
1029	const ColourValue& getAmbientLight(void) const;
1030
1031	/** Sets the source of the 'world' geometry, i.e. the large, mainly static geometry
1032	making up the world e.g. rooms, landscape etc.
1033	@remarks
1034	Depending on the type of SceneManager (subclasses will be specialised
1035	for particular world geometry types) you have requested via the Root or
1036	SceneManagerEnumerator classes, you can pass a filename to this method and it
1037	will attempt to load the world-level geometry for use. If you try to load
1038	an inappropriate type of world data an exception will be thrown. The default
1039	SceneManager cannot handle any sort of world geometry and so will always
1040	throw an exception. However subclasses like BspSceneManager can load
1041	particular types of world geometry e.g. "q3dm1.bsp".
1042	*/
1043	virtual void setWorldGeometry(const String& filename);
1044
1045	/** Sets the source of the 'world' geometry, i.e. the large, mainly
1046	static geometry making up the world e.g. rooms, landscape etc.
1047	@remarks
1048	Depending on the type of SceneManager (subclasses will be
1049	specialised for particular world geometry types) you have
1050	requested via the Root or SceneManagerEnumerator classes, you
1051	can pass a stream to this method and it will attempt to load
1052	the world-level geometry for use. If the manager can only
1053	handle one input format the typeName parameter is not required.
1054	The stream passed will be read (and it's state updated).
1055	@param stream Data stream containing data to load
1056	@param typeName String identifying the type of world geometry
1057	contained in the stream - not required if this manager only
1058	supports one type of world geometry.
1059	*/
1060	virtual void setWorldGeometry(DataStreamPtr& stream,
1061	const String& typeName = StringUtil::BLANK);
1062
1063	/** Estimate the number of loading stages required to load the named
1064	world geometry.
1065	@remarks
1066	This method should be overridden by SceneManagers that provide
1067	custom world geometry that can take some time to load. They should
1068	return from this method a count of the number of stages of progress
1069	they can report on whilst loading. During real loading (setWorldGeomtry),
1070	they should call ResourceGroupManager::_notifyWorldGeometryProgress exactly
1071	that number of times when loading the geometry for real.
1072	@note
1073	The default is to return 0, ie to not report progress.
1074	*/
1075	virtual size_t estimateWorldGeometry(const String& filename) { return 0; }
1076
1077	/** Estimate the number of loading stages required to load the named
1078	world geometry.
1079	@remarks
1080	Operates just like the version of this method which takes a
1081	filename, but operates on a stream instead. Note that since the
1082	stream is updated, you'll need to reset the stream or reopen it
1083	when it comes to loading it for real.
1084	@param stream Data stream containing data to load
1085	@param typeName String identifying the type of world geometry
1086	contained in the stream - not required if this manager only
1087	supports one type of world geometry.
1088	*/
1089	virtual size_t estimateWorldGeometry(DataStreamPtr& stream,
1090	const String& typeName = StringUtil::BLANK) { return 0; }
1091	/** Asks the SceneManager to provide a suggested viewpoint from which the scene should be viewed.
1092	@remarks
1093	Typically this method returns the origin unless a) world geometry has been loaded using
1094	SceneManager::setWorldGeometry and b) that world geometry has suggested 'start' points.
1095	If there is more than one viewpoint which the scene manager can suggest, it will always suggest
1096	the first one unless the random parameter is true.
1097	@param
1098	random If true, and there is more than one possible suggestion, a random one will be used. If false
1099	the same one will always be suggested.
1100	@return
1101	On success, true is returned.
1102	@par
1103	On failiure, false is returned.
1104	*/
1105	virtual ViewPoint getSuggestedViewpoint(bool random = false);
1106
1107	/** Method for setting a specific option of the Scene Manager. These options are usually
1108	specific for a certain implemntation of the Scene Manager class, and may (and probably
1109	will) not exist across different implementations.
1110	@param
1111	strKey The name of the option to set
1112	@param
1113	pValue A pointer to the value - the size should be calculated by the scene manager
1114	based on the key
1115	@return
1116	On success, true is returned.
1117	@par
1118	On failiure, false is returned.
1119	*/
1120	virtual bool setOption( const String& strKey, const void* pValue ) { return false; }
1121
1122	/** Method for getting the value of an implementation-specific Scene Manager option.
1123	@param
1124	strKey The name of the option
1125	@param
1126	pDestValue A pointer to a memory location where the value will
1127	be copied. Currently, the memory will be allocated by the
1128	scene manager, but this may change
1129	@return
1130	On success, true is returned and pDestValue points to the value of the given
1131	option.
1132	@par
1133	On failiure, false is returned and pDestValue is set to NULL.
1134	*/
1135	virtual bool getOption( const String& strKey, void* pDestValue ) { return false; }
1136
1137	/** Method for verifying wether the scene manager has an implementation-specific
1138	option.
1139	@param
1140	strKey The name of the option to check for.
1141	@return
1142	If the scene manager contains the given option, true is returned.
1143	@remarks
1144	If it does not, false is returned.
1145	*/
1146	virtual bool hasOption( const String& strKey ) const { return false; }
1147	/** Method for getting all possible values for a specific option. When this list is too large
1148	(i.e. the option expects, for example, a float), the return value will be true, but the
1149	list will contain just one element whose size will be set to 0.
1150	Otherwise, the list will be filled with all the possible values the option can
1151	accept.
1152	@param
1153	strKey The name of the option to get the values for.
1154	@param
1155	refValueList A reference to a list that will be filled with the available values.
1156	@return
1157	On success (the option exists), true is returned.
1158	@par
1159	On failure, false is returned.
1160	*/
1161	virtual bool getOptionValues( const String& strKey, StringVector& refValueList ) { return false; }
1162
1163	/** Method for getting all the implementation-specific options of the scene manager.
1164	@param
1165	refKeys A reference to a list that will be filled with all the available options.
1166	@return
1167	On success, true is returned. On failiure, false is returned.
1168	*/
1169	virtual bool getOptionKeys( StringVector& refKeys ) { return false; }
1170
1171	/** Internal method for updating the scene graph ie the tree of SceneNode instances managed by this class.
1172	@remarks
1173	This must be done before issuing objects to the rendering pipeline, since derived transformations from
1174	parent nodes are not updated until required. This SceneManager is a basic implementation which simply
1175	updates all nodes from the root. This ensures the scene is up to date but requires all the nodes
1176	to be updated even if they are not visible. Subclasses could trim this such that only potentially visible
1177	nodes are updated.
1178	*/
1179	virtual void _updateSceneGraph(Camera* cam);
1180
1181	/** Internal method which parses the scene to find visible objects to render.
1182	@remarks
1183	If you're implementing a custom scene manager, this is the most important method to
1184	override since it's here you can apply your custom world partitioning scheme. Once you
1185	have added the appropriate objects to the render queue, you can let the default
1186	SceneManager objects _renderVisibleObjects handle the actual rendering of the objects
1187	you pick.
1188	@par
1189	Any visible objects will be added to a rendering queue, which is indexed by material in order
1190	to ensure objects with the same material are rendered together to minimise render state changes.
1191	*/
1192	virtual void _findVisibleObjects(Camera* cam, bool onlyShadowCasters);
1193
1194	/** Internal method for applying animations to scene nodes.
1195	@remarks
1196	Uses the internally stored AnimationState objects to apply animation to SceneNodes.
1197	*/
1198	virtual void _applySceneAnimations(void);
1199
1200	/** Sends visible objects found in _findVisibleObjects to the rendering engine.
1201	*/
1202	virtual void _renderVisibleObjects(void);
1203
1204	/** Prompts the class to send its contents to the renderer.
1205	@remarks
1206	This method prompts the scene manager to send the
1207	contents of the scene it manages to the rendering
1208	pipeline, possibly preceded by some sorting, culling
1209	or other scene management tasks. Note that this method is not normally called
1210	directly by the user application; it is called automatically
1211	by the Ogre rendering loop.
1212	@param camera Pointer to a camera from whose viewpoint the scene is to
1213	be rendered.
1214	@param vp The target viewport
1215	@param includeOverlays Whether or not overlay objects should be rendered
1216	*/
1217	virtual void _renderScene(Camera* camera, Viewport* vp, bool includeOverlays);
1218
1219	/** Internal method for queueing the sky objects with the params as
1220	previously set through setSkyBox, setSkyPlane and setSkyDome.
1221	*/
1222	virtual void _queueSkiesForRendering(Camera* cam);
1223
1224
1225
1226	/** Notifies the scene manager of its destination render system
1227	@remarks
1228	Called automatically by RenderSystem::addSceneManager
1229	this method simply notifies the manager of the render
1230	system to which its output must be directed.
1231	@param
1232	sys Pointer to the RenderSystem subclass to be used as a render target.
1233	*/
1234	virtual void _setDestinationRenderSystem(RenderSystem* sys);
1235
1236	/** Enables / disables a 'sky plane' i.e. a plane at constant
1237	distance from the camera representing the sky.
1238	@remarks
1239	You can create sky planes yourself using the standard mesh and
1240	entity methods, but this creates a plane which the camera can
1241	never get closer or further away from - it moves with the camera.
1242	(NB you could create this effect by creating a world plane which
1243	was attached to the same SceneNode as the Camera too, but this
1244	would only apply to a single camera whereas this plane applies to
1245	any camera using this scene manager).
1246	@note
1247	To apply scaling, scrolls etc to the sky texture(s) you
1248	should use the TextureUnitState class methods.
1249	@param
1250	enable True to enable the plane, false to disable it
1251	@param
1252	plane Details of the plane, i.e. it's normal and it's
1253	distance from the camera.
1254	@param
1255	materialName The name of the material the plane will use
1256	@param
1257	scale The scaling applied to the sky plane - higher values
1258	mean a bigger sky plane - you may want to tweak this
1259	depending on the size of plane.d and the other
1260	characteristics of your scene
1261	@param
1262	tiling How many times to tile the texture across the sky.
1263	Applies to all texture layers. If you need finer control use
1264	the TextureUnitState texture coordinate transformation methods.
1265	@param
1266	drawFirst If true, the plane is drawn before all other
1267	geometry in the scene, without updating the depth buffer.
1268	This is the safest rendering method since all other objects
1269	will always appear in front of the sky. However this is not
1270	the most efficient way if most of the sky is often occluded
1271	by other objects. If this is the case, you can set this
1272	parameter to false meaning it draws <em>after</em> all other
1273	geometry which can be an optimisation - however you must
1274	ensure that the plane.d value is large enough that no objects
1275	will 'poke through' the sky plane when it is rendered.
1276	@param
1277	bow If zero, the plane will be completely flat (like previous
1278	versions. If above zero, the plane will be curved, allowing
1279	the sky to appear below camera level. Curved sky planes are
1280	simular to skydomes, but are more compatable with fog.
1281	@param xsegments, ysegments
1282	Determines the number of segments the plane will have to it. This
1283	is most important when you are bowing the plane, but may also be useful
1284	if you need tesselation on the plane to perform per-vertex effects.
1285	@param groupName
1286	The name of the resource group to which to assign the plane mesh.
1287	*/
1288	virtual void setSkyPlane(
1289	bool enable,
1290	const Plane& plane, const String& materialName, Real scale = 1000,
1291	Real tiling = 10, bool drawFirst = true, Real bow = 0,
1292	int xsegments = 1, int ysegments = 1,
1293	const String& groupName = ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
1294
1295	/** Return whether a key plane is enabled */
1296	virtual bool isSkyPlaneEnabled(void) const { return mSkyPlaneEnabled; }
1297
1298	/** Get the sky plane node, if enabled. */
1299	virtual SceneNode* getSkyPlaneNode(void) { return mSkyPlaneNode; }
1300	/ Get the parameters used to construct the SkyPlane, if any /
1301	virtual SceneManager::SkyPlaneGenParameters getSkyPlaneGenParameters(void) const { return mSkyPlaneGenParameters; }
1302
1303	/** Enables / disables a 'sky box' i.e. a 6-sided box at constant
1304	distance from the camera representing the sky.
1305	@remarks
1306	You could create a sky box yourself using the standard mesh and
1307	entity methods, but this creates a plane which the camera can
1308	never get closer or further away from - it moves with the camera.
1309	(NB you could create this effect by creating a world box which
1310	was attached to the same SceneNode as the Camera too, but this
1311	would only apply to a single camera whereas this skybox applies
1312	to any camera using this scene manager).
1313	@par
1314	The material you use for the skybox can either contain layers
1315	which are single textures, or they can be cubic textures, i.e.
1316	made up of 6 images, one for each plane of the cube. See the
1317	TextureUnitState class for more information.
1318	@param
1319	enable True to enable the skybox, false to disable it
1320	@param
1321	materialName The name of the material the box will use
1322	@param
1323	distance Distance in world coorinates from the camera to
1324	each plane of the box. The default is normally OK.
1325	@param
1326	drawFirst If true, the box is drawn before all other
1327	geometry in the scene, without updating the depth buffer.
1328	This is the safest rendering method since all other objects
1329	will always appear in front of the sky. However this is not
1330	the most efficient way if most of the sky is often occluded
1331	by other objects. If this is the case, you can set this
1332	parameter to false meaning it draws <em>after</em> all other
1333	geometry which can be an optimisation - however you must
1334	ensure that the distance value is large enough that no
1335	objects will 'poke through' the sky box when it is rendered.
1336	@param
1337	orientation Optional parameter to specify the orientation
1338	of the box. By default the 'top' of the box is deemed to be
1339	in the +y direction, and the 'front' at the -z direction.
1340	You can use this parameter to rotate the sky if you want.
1341	@param groupName
1342	The name of the resource group to which to assign the plane mesh.
1343	*/
1344	virtual void setSkyBox(
1345	bool enable, const String& materialName, Real distance = 5000,
1346	bool drawFirst = true, const Quaternion& orientation = Quaternion::IDENTITY,
1347	const String& groupName = ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
1348
1349	/** Return whether a skybox is enabled */
1350	virtual bool isSkyBoxEnabled(void) const { return mSkyBoxEnabled; }
1351
1352	/** Get the skybox node, if enabled. */
1353	virtual SceneNode* getSkyBoxNode(void) const { return mSkyBoxNode; }
1354
1355	/** Get the parameters used to generate the current SKyBox, if any */
1356	virtual SceneManager::SkyBoxGenParameters getSkyBoxGenParameters(void) const { return mSkyBoxGenParameters; }
1357
1358	/** Enables / disables a 'sky dome' i.e. an illusion of a curved sky.
1359	@remarks
1360	A sky dome is actually formed by 5 sides of a cube, but with
1361	texture coordinates generated such that the surface appears
1362	curved like a dome. Sky domes are appropriate where you need a
1363	realistic looking sky where the scene is not going to be
1364	'fogged', and there is always a 'floor' of some sort to prevent
1365	the viewer looking below the horizon (the distortion effect below
1366	the horizon can be pretty horrible, and there is never anyhting
1367	directly below the viewer). If you need a complete wrap-around
1368	background, use the setSkyBox method instead. You can actually
1369	combine a sky box and a sky dome if you want, to give a positional
1370	backdrop with an overlayed curved cloud layer.
1371	@par
1372	Sky domes work well with 2D repeating textures like clouds. You
1373	can change the apparant 'curvature' of the sky depending on how
1374	your scene is viewed - lower curvatures are better for 'open'
1375	scenes like landscapes, whilst higher curvatures are better for
1376	say FPS levels where you don't see a lot of the sky at once and
1377	the exaggerated curve looks good.
1378	@param
1379	enable True to enable the skydome, false to disable it
1380	@param
1381	materialName The name of the material the dome will use
1382	@param
1383	curvature The curvature of the dome. Good values are
1384	between 2 and 65. Higher values are more curved leading to
1385	a smoother effect, lower values are less curved meaning
1386	more distortion at the horizons but a better distance effect.
1387	@param
1388	tiling How many times to tile the texture(s) across the
1389	dome.
1390	@param
1391	distance Distance in world coorinates from the camera to
1392	each plane of the box the dome is rendered on. The default
1393	is normally OK.
1394	@param
1395	drawFirst If true, the dome is drawn before all other
1396	geometry in the scene, without updating the depth buffer.
1397	This is the safest rendering method since all other objects
1398	will always appear in front of the sky. However this is not
1399	the most efficient way if most of the sky is often occluded
1400	by other objects. If this is the case, you can set this
1401	parameter to false meaning it draws <em>after</em> all other
1402	geometry which can be an optimisation - however you must
1403	ensure that the distance value is large enough that no
1404	objects will 'poke through' the sky when it is rendered.
1405	@param
1406	orientation Optional parameter to specify the orientation
1407	of the dome. By default the 'top' of the dome is deemed to
1408	be in the +y direction, and the 'front' at the -z direction.
1409	You can use this parameter to rotate the sky if you want.
1410	@param groupName
1411	The name of the resource group to which to assign the plane mesh.
1412	*/
1413	virtual void setSkyDome(
1414	bool enable, const String& materialName, Real curvature = 10,
1415	Real tiling = 8, Real distance = 4000, bool drawFirst = true,
1416	const Quaternion& orientation = Quaternion::IDENTITY,
1417	int xsegments = 16, int ysegments = 16, int ysegments_keep = -1,
1418	const String& groupName = ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
1419
1420	/** Return whether a skydome is enabled */
1421	virtual bool isSkyDomeEnabled(void) const { return mSkyDomeEnabled; }
1422
1423	/** Get the sky dome node, if enabled. */
1424	virtual SceneNode* getSkyDomeNode(void) { return mSkyDomeNode; }
1425
1426	/** Get the parameters used to generate the current SkyDome, if any */
1427	virtual SceneManager::SkyDomeGenParameters getSkyDomeGenParameters(void) const { return mSkyDomeGenParameters; }
1428	/** Sets the fogging mode applied to the scene.
1429	@remarks
1430	This method sets up the scene-wide fogging effect. These settings
1431	apply to all geometry rendered, UNLESS the material with which it
1432	is rendered has it's own fog settings (see Material::setFog).
1433	@param
1434	mode Set up the mode of fog as described in the FogMode
1435	enum, or set to FOG_NONE to turn off.
1436	@param
1437	colour The colour of the fog. Either set this to the same
1438	as your viewport background colour, or to blend in with a
1439	skydome or skybox.
1440	@param
1441	expDensity The density of the fog in FOG_EXP or FOG_EXP2
1442	mode, as a value between 0 and 1. The default is 0.001.
1443	@param
1444	linearStart Distance in world units at which linear fog starts to
1445	encroach. Only applicable if mode is
1446	FOG_LINEAR.
1447	@param
1448	linearEnd Distance in world units at which linear fog becomes completely
1449	opaque. Only applicable if mode is
1450	FOG_LINEAR.
1451	*/
1452	void setFog(
1453	FogMode mode = FOG_NONE, const ColourValue& colour = ColourValue::White,
1454	Real expDensity = 0.001, Real linearStart = 0.0, Real linearEnd = 1.0);
1455
1456	/** Returns the fog mode for the scene.
1457	*/
1458	virtual FogMode getFogMode(void) const;
1459
1460	/** Returns the fog colour for the scene.
1461	*/
1462	virtual const ColourValue& getFogColour(void) const;
1463
1464	/** Returns the fog start distance for the scene.
1465	*/
1466	virtual Real getFogStart(void) const;
1467
1468	/** Returns the fog end distance for the scene.
1469	*/
1470	virtual Real getFogEnd(void) const;
1471
1472	/** Returns the fog density for the scene.
1473	*/
1474	virtual Real getFogDensity(void) const;
1475
1476
1477	/** Creates a new BillboardSet for use with this scene manager.
1478	@remarks
1479	This method creates a new BillboardSet which is registered with
1480	the SceneManager. The SceneManager will destroy this object when
1481	it shuts down or when the SceneManager::clearScene method is
1482	called, so the caller does not have to worry about destroying
1483	this object (in fact, it definitely should not do this).
1484	@par
1485	See the BillboardSet documentations for full details of the
1486	returned class.
1487	@param
1488	name The name to give to this billboard set. Must be unique.
1489	@param
1490	poolSize The initial size of the pool of billboards (see BillboardSet for more information)
1491	@see
1492	BillboardSet
1493	*/
1494	virtual BillboardSet* createBillboardSet(const String& name, unsigned int poolSize = 20);
1495
1496	/** Retrieves a pointer to the named BillboardSet.
1497	*/
1498	virtual BillboardSet* getBillboardSet(const String& name);
1499
1500	/** Removes & destroys an BillboardSet from the SceneManager.
1501	@warning
1502	Must only be done if the BillboardSet is not attached
1503	to a SceneNode. It may be safer to wait to clear the whole
1504	scene. If you are unsure, use clearScene.
1505	*/
1506	virtual void destroyBillboardSet(BillboardSet* set);
1507
1508	/** Removes & destroys an BillboardSet from the SceneManager by name.
1509	@warning
1510	Must only be done if the BillboardSet is not attached
1511	to a SceneNode. It may be safer to wait to clear the whole
1512	scene. If you are unsure, use clearScene.
1513	*/
1514	virtual void destroyBillboardSet(const String& name);
1515
1516	/** Removes & destroys all BillboardSets.
1517	@warning
1518	Again, use caution since no BillboardSet must be referred to
1519	elsewhere e.g. attached to a SceneNode otherwise a crash
1520	is likely. Use clearScene if you are unsure (it clears SceneNode
1521	entries too.)
1522	@see
1523	SceneManager::clearScene
1524	*/
1525	virtual void destroyAllBillboardSets(void);
1526
1527	/** Tells the SceneManager whether it should render the SceneNodes which
1528	make up the scene as well as the objects in the scene.
1529	@remarks
1530	This method is mainly for debugging purposes. If you set this to 'true',
1531	each node will be rendered as a set of 3 axes to allow you to easily see
1532	the orientation of the nodes.
1533	*/
1534	virtual void setDisplaySceneNodes(bool display);
1535	/** Returns true if all scene nodes axis are to be displayed */
1536	virtual bool getDisplaySceneNodes(void) const {return mDisplayNodes;}
1537
1538	/** Creates an animation which can be used to animate scene nodes.
1539	@remarks
1540	An animation is a collection of 'tracks' which over time change the position / orientation
1541	of Node objects. In this case, the animation will likely have tracks to modify the position
1542	/ orientation of SceneNode objects, e.g. to make objects move along a path.
1543	@par
1544	You don't need to use an Animation object to move objects around - you can do it yourself
1545	using the methods of the Node in your FrameListener class. However, when you need relatively
1546	complex scripted animation, this is the class to use since it will interpolate between
1547	keyframes for you and generally make the whole process easier to manage.
1548	@par
1549	A single animation can affect multiple Node objects (each AnimationTrack affects a single Node).
1550	In addition, through animation blending a single Node can be affected by multiple animations,
1551	athough this is more useful when performing skeletal animation (see Skeleton::createAnimation).
1552	@par
1553	Note that whilst it uses the same classes, the animations created here are kept separate from the
1554	skeletal animations of meshes (each Skeleton owns those animations).
1555	@param name The name of the animation, must be unique within this SceneManager.
1556	@param length The total length of the animation.
1557	*/
1558	virtual Animation* createAnimation(const String& name, Real length);
1559
1560	/** Looks up an Animation object previously created with createAnimation. */
1561	virtual Animation* getAnimation(const String& name) const;
1562
1563	/** Destroys an Animation.
1564	@remarks
1565	You should ensure that none of your code is referencing this animation objects since the
1566	memory will be freed.
1567	*/
1568	virtual void destroyAnimation(const String& name);
1569
1570	/** Removes all animations created using this SceneManager. */
1571	virtual void destroyAllAnimations(void);
1572
1573	/** Create an AnimationState object for managing application of animations.
1574	@remarks
1575	You can create Animation objects for animating SceneNode obejcts using the
1576	createAnimation method. However, in order to actually apply those animations
1577	you have to call methods on Node and Animation in a particular order (namely
1578	Node::resetToInitialState and Animation::apply). To make this easier and to
1579	help track the current time position of animations, the AnimationState object
1580	is provided. </p>
1581	So if you don't want to control animation application manually, call this method,
1582	update the returned object as you like every frame and let SceneManager apply
1583	the animation state for you.
1584	@par
1585	Remember, AnimationState objects are disabled by default at creation time.
1586	Turn them on when you want them using their setEnabled method.
1587	@par
1588	Note that any SceneNode affected by this automatic animation will have it's state
1589	reset to it's initial position before application of the animation. Unless specifically
1590	modified using Node::setInitialState the Node assumes it's initial state is at the
1591	origin. If you want the base state of the SceneNode to be elsewhere, make your changes
1592	to the node using the standard transform methods, then call setInitialState to
1593	'bake' this reference position into the node.
1594	@param animName The name of an animation created already with createAnimation.
1595	*/
1596	virtual AnimationState* createAnimationState(const String& animName);
1597
1598	/** Retrieves animation state as previously created using createAnimationState */
1599	virtual AnimationState* getAnimationState(const String& animName);
1600
1601	/** Destroys an AnimationState.
1602	@remarks
1603	You should ensure that none of your code is referencing this animation
1604	state object since the memory will be freed.
1605	*/
1606	virtual void destroyAnimationState(const String& name);
1607
1608	/** Removes all animation states created using this SceneManager. */
1609	virtual void destroyAllAnimationStates(void);
1610
1611	/** Manual rendering method, for advanced users only.
1612	@remarks
1613	This method allows you to send rendering commands through the pipeline on
1614	demand, bypassing OGRE's normal world processing. You should only use this if you
1615	really know what you're doing; OGRE does lots of things for you that you really should
1616	let it do. However, there are times where it may be useful to have this manual interface,
1617	for example overlaying something on top of the scene rendered by OGRE.
1618	@par
1619	Because this is an instant rendering method, timing is important. The best
1620	time to call it is from a RenderTargetListener event handler.
1621	@par
1622	Don't call this method a lot, it's designed for rare (1 or 2 times per frame) use.
1623	Calling it regularly per frame will cause frame rate drops!
1624	@param rend A RenderOperation object describing the rendering op
1625	@param pass The Pass to use for this render
1626	@param vp Pointer to the viewport to render to
1627	@param worldMatrix The transform to apply from object to world space
1628	@param viewMatrix The transform to apply from world to view space
1629	@param projMatrix The transform to apply from view to screen space
1630	@param doBeginEndFrame If true, beginFrame() and endFrame() are called,
1631	otherwise not. You should leave this as false if you are calling
1632	this within the main render loop.
1633	*/
1634	virtual void manualRender(RenderOperation* rend, Pass* pass, Viewport* vp,
1635	const Matrix4& worldMatrix, const Matrix4& viewMatrix, const Matrix4& projMatrix,
1636	bool doBeginEndFrame = false) ;
1637
1638	/** Retrieves the internal render queue, for advanced users only.
1639	@remarks
1640	The render queue is mainly used internally to manage the scene object
1641	rendering queue, it also exports some methods to allow advanced users
1642	to configure the behavior of rendering process.
1643	Most methods provided by RenderQueue are supposed to be used
1644	internally only, you should reference to the RenderQueue API for
1645	more information. Do not access this directly unless you know what
1646	you are doing.
1647	*/
1648	virtual RenderQueue* getRenderQueue(void);
1649
1650	/** Registers a new RenderQueueListener which will be notified when render queues
1651	are processed.
1652	*/
1653	virtual void addRenderQueueListener(RenderQueueListener* newListener);
1654
1655	/** Removes a listener previously added with addRenderQueueListener. */
1656	virtual void removeRenderQueueListener(RenderQueueListener* delListener);
1657
1658	/** Adds an item to the 'special case' render queue list.
1659	@remarks
1660	Normally all render queues are rendered, in their usual sequence,
1661	only varying if a RenderQueueListener nominates for the queue to be
1662	repeated or skipped. This method allows you to add a render queue to
1663	a 'special case' list, which varies the behaviour. The effect of this
1664	list depends on the 'mode' in which this list is in, which might be
1665	to exclude these render queues, or to include them alone (excluding
1666	all other queues). This allows you to perform broad selective
1667	rendering without requiring a RenderQueueListener.
1668	@param qid The identifier of the queue which should be added to the
1669	special case list. Nothing happens if the queue is already in the list.
1670	*/
1671	virtual void addSpecialCaseRenderQueue(uint8 qid);
1672	/** Removes an item to the 'special case' render queue list.
1673	@see SceneManager::addSpecialCaseRenderQueue
1674	@param qid The identifier of the queue which should be removed from the
1675	special case list. Nothing happens if the queue is not in the list.
1676	*/
1677	virtual void removeSpecialCaseRenderQueue(uint8 qid);
1678	/** Clears the 'special case' render queue list.
1679	@see SceneManager::addSpecialCaseRenderQueue
1680	*/
1681	virtual void clearSpecialCaseRenderQueues(void);
1682	/** Sets the way the special case render queue list is processed.
1683	@see SceneManager::addSpecialCaseRenderQueue
1684	@param mode The mode of processing
1685	*/
1686	virtual void setSpecialCaseRenderQueueMode(SpecialCaseRenderQueueMode mode);
1687	/** Gets the way the special case render queue list is processed. */
1688	virtual SpecialCaseRenderQueueMode getSpecialCaseRenderQueueMode(void);
1689	/** Returns whether or not the named queue will be rendered based on the
1690	current 'special case' render queue list and mode.
1691	@see SceneManager::addSpecialCaseRenderQueue
1692	@param qid The identifier of the queue which should be tested
1693	@returns true if the queue will be rendered, false otherwise
1694	*/
1695	virtual bool isRenderQueueToBeProcessed(uint8 qid);
1696
1697	/** Sets the render queue that the world geometry (if any) this SceneManager
1698	renders will be associated with.
1699	@remarks
1700	SceneManagers which provide 'world geometry' should place it in a
1701	specialised render queue in order to make it possible to enable /
1702	disable it easily using the addSpecialCaseRenderQueue method. Even
1703	if the SceneManager does not use the render queues to render the
1704	world geometry, it should still pick a queue to represent it's manual
1705	rendering, and check isRenderQueueToBeProcessed before rendering.
1706	@note
1707	Setting this may not affect the actual ordering of rendering the
1708	world geometry, if the world geometry is being rendered manually
1709	by the SceneManager. If the SceneManager feeds world geometry into
1710	the queues, however, the ordering will be affected.
1711	*/
1712	virtual void setWorldGeometryRenderQueue(uint8 qid);
1713	/** Gets the render queue that the world geometry (if any) this SceneManager
1714	renders will be associated with.
1715	@remarks
1716	SceneManagers which provide 'world geometry' should place it in a
1717	specialised render queue in order to make it possible to enable /
1718	disable it easily using the addSpecialCaseRenderQueue method. Even
1719	if the SceneManager does not use the render queues to render the
1720	world geometry, it should still pick a queue to represent it's manual
1721	rendering, and check isRenderQueueToBeProcessed before rendering.
1722	*/
1723	virtual uint8 getWorldGeometryRenderQueue(void);
1724
1725	/** Allows all bounding boxes of scene nodes to be displayed. */
1726	virtual void showBoundingBoxes(bool bShow);
1727
1728	/** Returns if all bounding boxes of scene nodes are to be displayed */
1729	virtual bool getShowBoundingBoxes() const;
1730
1731	/** Internal method for notifying the manager that a SceneNode is autotracking. */
1732	virtual void _notifyAutotrackingSceneNode(SceneNode* node, bool autoTrack);
1733
1734
1735	/** Creates an AxisAlignedBoxSceneQuery for this scene manager.
1736	@remarks
1737	This method creates a new instance of a query object for this scene manager,
1738	for an axis aligned box region. See SceneQuery and AxisAlignedBoxSceneQuery
1739	for full details.
1740	@par
1741	The instance returned from this method must be destroyed by calling
1742	SceneManager::destroyQuery when it is no longer required.
1743	@param box Details of the box which describes the region for this query.
1744	@param mask The query mask to apply to this query; can be used to filter out
1745	certain objects; see SceneQuery for details.
1746	*/
1747	virtual AxisAlignedBoxSceneQuery*
1748	createAABBQuery(const AxisAlignedBox& box, unsigned long mask = 0xFFFFFFFF);
1749	/** Creates a SphereSceneQuery for this scene manager.
1750	@remarks
1751	This method creates a new instance of a query object for this scene manager,
1752	for a spherical region. See SceneQuery and SphereSceneQuery
1753	for full details.
1754	@par
1755	The instance returned from this method must be destroyed by calling
1756	SceneManager::destroyQuery when it is no longer required.
1757	@param sphere Details of the sphere which describes the region for this query.
1758	@param mask The query mask to apply to this query; can be used to filter out
1759	certain objects; see SceneQuery for details.
1760	*/
1761	virtual SphereSceneQuery*
1762	createSphereQuery(const Sphere& sphere, unsigned long mask = 0xFFFFFFFF);
1763	/** Creates a PlaneBoundedVolumeListSceneQuery for this scene manager.
1764	@remarks
1765	This method creates a new instance of a query object for this scene manager,
1766	for a region enclosed by a set of planes (normals pointing inwards).
1767	See SceneQuery and PlaneBoundedVolumeListSceneQuery for full details.
1768	@par
1769	The instance returned from this method must be destroyed by calling
1770	SceneManager::destroyQuery when it is no longer required.
1771	@param volumes Details of the volumes which describe the region for this query.
1772	@param mask The query mask to apply to this query; can be used to filter out
1773	certain objects; see SceneQuery for details.
1774	*/
1775	virtual PlaneBoundedVolumeListSceneQuery*
1776	createPlaneBoundedVolumeQuery(const PlaneBoundedVolumeList& volumes, unsigned long mask = 0xFFFFFFFF);
1777
1778
1779	/** Creates a RaySceneQuery for this scene manager.
1780	@remarks
1781	This method creates a new instance of a query object for this scene manager,
1782	looking for objects which fall along a ray. See SceneQuery and RaySceneQuery
1783	for full details.
1784	@par
1785	The instance returned from this method must be destroyed by calling
1786	SceneManager::destroyQuery when it is no longer required.
1787	@param ray Details of the ray which describes the region for this query.
1788	@param mask The query mask to apply to this query; can be used to filter out
1789	certain objects; see SceneQuery for details.
1790	*/
1791	virtual RaySceneQuery*
1792	createRayQuery(const Ray& ray, unsigned long mask = 0xFFFFFFFF);
1793	//PyramidSceneQuery* createPyramidQuery(const Pyramid& p, unsigned long mask = 0xFFFFFFFF);
1794	/** Creates an IntersectionSceneQuery for this scene manager.
1795	@remarks
1796	This method creates a new instance of a query object for locating
1797	intersecting objects. See SceneQuery and IntersectionSceneQuery
1798	for full details.
1799	@par
1800	The instance returned from this method must be destroyed by calling
1801	SceneManager::destroyQuery when it is no longer required.
1802	@param mask The query mask to apply to this query; can be used to filter out
1803	certain objects; see SceneQuery for details.
1804	*/
1805	virtual IntersectionSceneQuery*
1806	createIntersectionQuery(unsigned long mask = 0xFFFFFFFF);
1807
1808	/** Destroys a scene query of any type. */
1809	virtual void destroyQuery(SceneQuery* query);
1810
1811	typedef MapIterator<CameraList> CameraIterator;
1812	typedef MapIterator<AnimationList> AnimationIterator;
1813
1814	/** Returns a specialised MapIterator over all cameras in the scene. */
1815	CameraIterator getCameraIterator(void) {
1816	return CameraIterator(mCameras.begin(), mCameras.end());
1817	}
1818	/** Returns a specialised MapIterator over all animations in the scene. */
1819	AnimationIterator getAnimationIterator(void) {
1820	return AnimationIterator(mAnimationsList.begin(), mAnimationsList.end());
1821	}
1822	/** Returns a specialised MapIterator over all animation states in the scene. */
1823	AnimationStateIterator getAnimationStateIterator(void) {
1824	return mAnimationStates.getAnimationStateIterator();
1825	}
1826
1827	/** Sets the general shadow technique to be used in this scene.
1828	@remarks
1829	There are multiple ways to generate shadows in a scene, and each has
1830	strengths and weaknesses.
1831	<ul><li>Stencil-based approaches can be used to
1832	draw very long, extreme shadows without loss of precision and the 'additive'
1833	version can correctly show the shadowing of complex effects like bump mapping
1834	because they physically exclude the light from those areas. However, the edges
1835	are very sharp and stencils cannot handle transparency, and they involve a
1836	fair amount of CPU work in order to calculate the shadow volumes, especially
1837	when animated objects are involved.</li>
1838	<li>Texture-based approaches are good for handling transparency (they can, for
1839	example, correctly shadow a mesh which uses alpha to represent holes), and they
1840	require little CPU overhead, and can happily shadow geometry which is deformed
1841	by a vertex program, unlike stencil shadows. However, they have a fixed precision
1842	which can introduce 'jaggies' at long range and have fillrate issues of their own.</li>
1843	</ul>
1844	@par
1845	We support 2 kinds of stencil shadows, and 2 kinds of texture-based shadows, and one
1846	simple decal approach. The 2 stencil approaches differ in the amount of multipass work
1847	that is required - the modulative approach simply 'darkens' areas in shadow after the
1848	main render, which is the least expensive, whilst the additive approach has to perform
1849	a render per light and adds the cumulative effect, whcih is more expensive but more
1850	accurate. The texture based shadows both work in roughly the same way, the only difference is
1851	that the shadowmap approach is slightly more accurate, but requires a more recent
1852	graphics card.
1853	@par
1854	Note that because mixing many shadow techniques can cause problems, only one technique
1855	is supported at once. Also, you should call this method at the start of the
1856	scene setup.
1857	@param technique The shadowing technique to use for the scene.
1858	*/
1859	virtual void setShadowTechnique(ShadowTechnique technique);
1860
1861	/** Gets the current shadow technique. */
1862	virtual ShadowTechnique getShadowTechnique(void) const { return mShadowTechnique; }
1863
1864	/** Enables / disables the rendering of debug information for shadows. */
1865	virtual void setShowDebugShadows(bool debug) { mDebugShadows = debug; }
1866	/** Are debug shadows shown? */
1867	virtual bool getShowDebugShadows(void ) const { return mDebugShadows; }
1868
1869	/** Set the colour used to modulate areas in shadow.
1870	@remarks This is only applicable for shadow techniques which involve
1871	darkening the area in shadow, as opposed to masking out the light.
1872	This colour provided is used as a modulative value to darken the
1873	areas.
1874	*/
1875	virtual void setShadowColour(const ColourValue& colour);
1876	/** Get the colour used to modulate areas in shadow.
1877	@remarks This is only applicable for shadow techniques which involve
1878	darkening the area in shadow, as opposed to masking out the light.
1879	This colour provided is used as a modulative value to darken the
1880	areas.
1881	*/
1882	virtual const ColourValue& getShadowColour(void) const;
1883	/** Sets the distance a shadow volume is extruded for a directional light.
1884	@remarks
1885	Although directional lights are essentially infinite, there are many
1886	reasons to limit the shadow extrusion distance to a finite number,
1887	not least of which is compatibility with older cards (which do not
1888	support infinite positions), and shadow caster elimination.
1889	@par
1890	The default value is 10,000 world units. This does not apply to
1891	point lights or spotlights, since they extrude up to their
1892	attenuation range.
1893	*/
1894	virtual void setShadowDirectionalLightExtrusionDistance(Real dist);
1895	/** Gets the distance a shadow volume is extruded for a directional light.
1896	*/
1897	virtual Real getShadowDirectionalLightExtrusionDistance(void) const;
1898	/** Sets the maximum distance away from the camera that shadows
1899	will be visible.
1900	@remarks
1901	Shadow techniques can be expensive, therefore it is a good idea
1902	to limit them to being rendered close to the camera if possible,
1903	and to skip the expense of rendering shadows for distance objects.
1904	This method allows you to set the distance at which shadows will no
1905	longer be rendered.
1906	@note
1907	Each shadow technique can interpret this subtely differently.
1908	For example, one technique may use this to eliminate casters,
1909	another might use it to attenuate the shadows themselves.
1910	You should tweak this value to suit your chosen shadow technique
1911	and scene setup.
1912	*/
1913	virtual void setShadowFarDistance(Real distance);
1914	/** Gets the maximum distance away from the camera that shadows
1915	will be visible.
1916	*/
1917	virtual Real getShadowFarDistance(void) const
1918	{ return mShadowFarDist; }
1919
1920	/** Sets the maximum size of the index buffer used to render shadow
1921	primitives.
1922	@remarks
1923	This method allows you to tweak the size of the index buffer used
1924	to render shadow primitives (including stencil shadow volumes). The
1925	default size is 51,200 entries, which is 100k of GPU memory, or
1926	enough to render approximately 17,000 triangles. You can reduce this
1927	as long as you do not have any models / world geometry chunks which
1928	could require more than the amount you set.
1929	@par
1930	The maximum number of triangles required to render a single shadow
1931	volume (including light and dark caps when needed) will be 3x the
1932	number of edges on the light silhouette, plus the number of
1933	light-facing triangles. On average, half the
1934	triangles will be facing toward the light, but the number of
1935	triangles in the silhouette entirely depends on the mesh -
1936	angular meshes will have a higher silhouette tris/mesh tris
1937	ratio than a smooth mesh. You can estimate the requirements for
1938	your particular mesh by rendering it alone in a scene with shadows
1939	enabled and a single light - rotate it or the light and make a note
1940	of how high the triangle count goes (remembering to subtract the
1941	mesh triangle count)
1942	@param size The number of indexes; divide this by 3 to determine the
1943	number of triangles.
1944	*/
1945	virtual void setShadowIndexBufferSize(size_t size);
1946	/// Get the size of the shadow index buffer
1947	virtual size_t getShadowIndexBufferSize(void) const
1948	{ return mShadowIndexBufferSize; }
1949	/** Set the size of the texture used for texture-based shadows.
1950	@remarks
1951	The larger the shadow texture, the better the detail on
1952	texture based shadows, but obviously this takes more memory.
1953	The default size is 512. Sizes must be a power of 2.
1954	*/
1955	virtual void setShadowTextureSize(unsigned short size);
1956	/// Get the size of the texture used for texture based shadows
1957	unsigned short getShadowTextureSize(void) const {return mShadowTextureSize; }
1958	/** Set the pixel format of the textures used for texture-based shadows.
1959	@remarks
1960	By default, a colour texture is used (PF_X8R8G8B8) for texture shadows,
1961	but if you want to use more advanced texture shadow types you can
1962	alter this. If you do, you will have to also call
1963	setShadowTextureCasterMaterial and setShadowTextureReceiverMaterial
1964	to provide shader-based materials to use these customised shadow
1965	texture formats.
1966	*/
1967	virtual void setShadowTexturePixelFormat(PixelFormat fmt);
1968	/// Get the format of the textures used for texture based shadows
1969	PixelFormat getShadowTexturePixelFormat(void) const {return mShadowTextureFormat; }
1970	/** Set the number of textures allocated for texture-based shadows.
1971	@remarks
1972	The default number of textures assigned to deal with texture based
1973	shadows is 1; however this means you can only have one light casting
1974	shadows at the same time. You can increase this number in order to
1975	make this more flexible, but be aware of the texture memory it will use.
1976	*/
1977	virtual void setShadowTextureCount(unsigned short count);
1978	/// Get the number of the textures allocated for texture based shadows
1979	unsigned short getShadowTextureCount(void) const {return mShadowTextureCount; }
1980	/** Sets the size and count of textures used in texture-based shadows.
1981	@remarks
1982	@see setShadowTextureSize and setShadowTextureCount for details, this
1983	method just allows you to change both at once, which can save on
1984	reallocation if the textures have already been created.
1985	*/
1986	virtual void setShadowTextureSettings(unsigned short size, unsigned short count,
1987	PixelFormat fmt = PF_X8R8G8B8);
1988	/** Sets the proportional distance which a texture shadow which is generated from a
1989	directional light will be offset into the camera view to make best use of texture space.
1990	@remarks
1991	When generating a shadow texture from a directional light, an approximation is used
1992	since it is not possible to render the entire scene to one texture.
1993	The texture is projected onto an area centred on the camera, and is
1994	the shadow far distance * 2 in length (it is square). This wastes
1995	a lot of texture space outside the frustum though, so this offset allows
1996	you to move the texture in front of the camera more. However, be aware
1997	that this can cause a little shadow 'jittering' during rotation, and
1998	that if you move it too far then you'll start to get artefacts close
1999	to the camera. The value is represented as a proportion of the shadow
2000	far distance, and the default is 0.6.
2001	*/
2002	virtual void setShadowDirLightTextureOffset(Real offset) { mShadowTextureOffset = offset;}
2003	/** Sets the proportional distance at which texture shadows begin to fade out.
2004	@remarks
2005	To hide the edges where texture shadows end (in directional lights)
2006	Ogre will fade out the shadow in the distance. This value is a proportional
2007	distance of the entire shadow visibility distance at which the shadow
2008	begins to fade out. The default is 0.7
2009	*/
2010	virtual void setShadowTextureFadeStart(Real fadeStart)
2011	{ mShadowTextureFadeStart = fadeStart; }
2012	/** Sets the proportional distance at which texture shadows finish to fading out.
2013	@remarks
2014	To hide the edges where texture shadows end (in directional lights)
2015	Ogre will fade out the shadow in the distance. This value is a proportional
2016	distance of the entire shadow visibility distance at which the shadow
2017	is completely invisible. The default is 0.9.
2018	*/
2019	virtual void setShadowTextureFadeEnd(Real fadeEnd)
2020	{ mShadowTextureFadeEnd = fadeEnd; }
2021
2022	/** Sets whether or not texture shadows should attempt to self-shadow.
2023	@remarks
2024	The default implementation of texture shadows uses a fixed-function
2025	colour texture projection approach for maximum compatibility, and
2026	as such cannot support self-shadowing. However, if you decide to
2027	implement a more complex shadowing technique using the
2028	setShadowTextureCasterMaterial and setShadowTextureReceiverMaterial
2029	there is a possibility you may be able to support
2030	self-shadowing (e.g by implementing a shader-based shadow map). In
2031	this case you might want to enable this option.
2032	@param selfShadow Whether to attempt self-shadowing with texture shadows
2033	*/
2034	virtual void setShadowTextureSelfShadow(bool selfShadow);
2035
2036	/// Gets whether or not texture shadows attempt to self-shadow.
2037	virtual bool getShadowTextureSelfShadow(void) const
2038	{ return mShadowTextureSelfShadow; }
2039	/** Sets the default material to use for rendering shadow casters.
2040	@remarks
2041	By default shadow casters are rendered into the shadow texture using
2042	an automatically generated fixed-function pass. This allows basic
2043	projective texture shadows, but it's possible to use more advanced
2044	shadow techniques by overriding the caster and receiver materials, for
2045	example providing vertex and fragment programs to implement shadow
2046	maps.
2047	@par
2048	You can rely on the ambient light in the scene being set to the
2049	requested texture shadow colour, if that's useful.
2050	@note
2051	Individual objects may also override the vertex program in
2052	your default material if their materials include
2053	shadow_caster_vertex_program_ref shadow_receiver_vertex_program_ref
2054	entries, so if you use both make sure they are compatible.
2055	@note
2056	Only a single pass is allowed in your material, although multiple
2057	techniques may be used for hardware fallback.
2058	*/
2059	virtual void setShadowTextureCasterMaterial(const String& name);
2060	/** Sets the default material to use for rendering shadow receivers.
2061	@remarks
2062	By default shadow receivers are rendered as a post-pass using basic
2063	modulation. This allows basic projective texture shadows, but it's
2064	possible to use more advanced shadow techniques by overriding the
2065	caster and receiver materials, for example providing vertex and
2066	fragment programs to implement shadow maps.
2067	@par
2068	You can rely on texture unit 0 containing the shadow texture, and
2069	for the unit to be set to use projective texturing from the light
2070	(only useful if you're using fixed-function, which is unlikely;
2071	otherwise you should rely on the texture_viewproj_matrix auto binding)
2072	@note
2073	Individual objects may also override the vertex program in
2074	your default material if their materials include
2075	shadow_caster_vertex_program_ref shadow_receiver_vertex_program_ref
2076	entries, so if you use both make sure they are compatible.
2077	@note
2078	Only a single pass is allowed in your material, although multiple
2079	techniques may be used for hardware fallback.
2080	*/
2081	virtual void setShadowTextureReceiverMaterial(const String& name);
2082
2083	/** Sets whether we should use an inifinite camera far plane
2084	when rendering stencil shadows.
2085	@remarks
2086	Stencil shadow coherency is very reliant on the shadow volume
2087	not being clipped by the far plane. If this clipping happens, you
2088	get a kind of 'negative' shadow effect. The best way to achieve
2089	coherency is to move the far plane of the camera out to infinity,
2090	thus preventing the far plane from clipping the shadow volumes.
2091	When combined with vertex program extrusion of the volume to
2092	infinity, which Ogre does when available, this results in very
2093	robust shadow volumes. For this reason, when you enable stencil
2094	shadows, Ogre automatically changes your camera settings to
2095	project to infinity if the card supports it. You can disable this
2096	behaviour if you like by calling this method; although you can
2097	never enable infinite projection if the card does not support it.
2098	@par
2099	If you disable infinite projection, or it is not available,
2100	you need to be far more careful with your light attenuation /
2101	directional light extrusion distances to avoid clipping artefacts
2102	at the far plane.
2103	@note
2104	Recent cards will generally support infinite far plane projection.
2105	However, we have found some cases where they do not, especially
2106	on Direct3D. There is no standard capability we can check to
2107	validate this, so we use some heuristics based on experience:
2108	<UL>
2109	<LI>OpenGL always seems to support it no matter what the card</LI>
2110	<LI>Direct3D on non-vertex program capable systems (including
2111	vertex program capable cards on Direct3D7) does not
2112	support it</LI>
2113	<LI>Direct3D on GeForce3 and GeForce4 Ti does not seem to support
2114	infinite projection<LI>
2115	</UL>
2116	Therefore in the RenderSystem implementation, we may veto the use
2117	of an infinite far plane based on these heuristics.
2118	*/
2119	virtual void setShadowUseInfiniteFarPlane(bool enable) {
2120	mShadowUseInfiniteFarPlane = enable; }
2121
2122	/** Is there a stencil shadow based shadowing technique in use? */
2123	virtual bool isShadowTechniqueStencilBased(void) const
2124	{ return (mShadowTechnique & SHADOWDETAILTYPE_STENCIL) != 0; }
2125	/** Is there a texture shadow based shadowing technique in use? */
2126	virtual bool isShadowTechniqueTextureBased(void) const
2127	{ return (mShadowTechnique & SHADOWDETAILTYPE_TEXTURE) != 0; }
2128	/** Is there a modulative shadowing technique in use? */
2129	virtual bool isShadowTechniqueModulative(void) const
2130	{ return (mShadowTechnique & SHADOWDETAILTYPE_MODULATIVE) != 0; }
2131	/** Is there an additive shadowing technique in use? */
2132	virtual bool isShadowTechniqueAdditive(void) const
2133	{ return (mShadowTechnique & SHADOWDETAILTYPE_ADDITIVE) != 0; }
2134	/** Is there any shadowing technique in use? */
2135	virtual bool isShadowTechniqueInUse(void) const
2136	{ return mShadowTechnique != SHADOWTYPE_NONE; }
2137
2138	/** Add a shadow listener which will get called back on shadow
2139	events.
2140	*/
2141	virtual void addShadowListener(ShadowListener* s);
2142	/** Remove a shadow listener
2143	*/
2144	virtual void removeShadowListener(ShadowListener* s);
2145
2146	/** Creates a StaticGeometry instance suitable for use with this
2147	SceneManager.
2148	@remarks
2149	StaticGeometry is a way of batching up geometry into a more
2150	efficient form at the expense of being able to move it. Please
2151	read the StaticGeometry class documentation for full information.
2152	@param name The name to give the new object
2153	@returns The new StaticGeometry instance
2154	*/
2155	virtual StaticGeometry* createStaticGeometry(const String& name);
2156	/** Retrieve a previously created StaticGeometry instance. */
2157	virtual StaticGeometry* getStaticGeometry(const String& name) const;
2158	/** Remove & destroy a StaticGeometry instance. */
2159	virtual void destroyStaticGeometry(StaticGeometry* geom);
2160	/** Remove & destroy a StaticGeometry instance. */
2161	virtual void destroyStaticGeometry(const String& name);
2162	/** Remove & destroy all StaticGeometry instances. */
2163	virtual void destroyAllStaticGeometry(void);
2164
2165
2166	/** Create a movable object of the type specified.
2167	@remarks
2168	This is the generalised form of MovableObject creation where you can
2169	create a MovableObject of any specialised type generically, including
2170	any new types registered using plugins.
2171	@param name The name to give the object. Must be unique within type.
2172	@param typeName The type of object to create
2173	@param params Optional name/value pair list to give extra parameters to
2174	the created object.
2175	*/
2176	virtual MovableObject* createMovableObject(const String& name,
2177	const String& typeName, const NameValuePairList* params = 0);
2178	/** Destroys a MovableObject with the name specified, of the type specified.
2179	@remarks
2180	The MovableObject will automatically detach itself from any nodes
2181	on destruction.
2182	*/
2183	virtual void destroyMovableObject(const String& name, const String& typeName);
2184	/** Destroys a MovableObject.
2185	@remarks
2186	The MovableObject will automatically detach itself from any nodes
2187	on destruction.
2188	*/
2189	virtual void destroyMovableObject(MovableObject* m);
2190	/** Destroy all MovableObjects of a given type. */
2191	virtual void destroyAllMovableObjectsByType(const String& typeName);
2192	/** Destroy all MovableObjects. */
2193	virtual void destroyAllMovableObjects(void);
2194	/** Get a reference to a previously created MovableObject. */
2195	virtual MovableObject* getMovableObject(const String& name, const String& typeName);
2196	typedef MapIterator<MovableObjectMap> MovableObjectIterator;
2197	/** Get an iterator over all MovableObect instances of a given type. */
2198	virtual MovableObjectIterator getMovableObjectIterator(const String& typeName);
2199	/** Inject a MovableObject instance created externally.
2200	@remarks
2201	This method 'injects' a MovableObject instance created externally into
2202	the MovableObject instance registry held in the SceneManager. You
2203	might want to use this if you have a MovableObject which you don't
2204	want to register a factory for; for example a MovableObject which
2205	cannot be generally constructed by clients.
2206	@note
2207	It is important that the MovableObject has a unique name for the type,
2208	and that its getMovableType() method returns a proper type name.
2209	*/
2210	virtual void injectMovableObject(MovableObject* m);
2211	/** Extract a previously injected MovableObject.
2212	@remarks
2213	Essentially this does the same as destroyMovableObject, but only
2214	removes the instance from the internal lists, it does not attempt
2215	to destroy it.
2216	*/
2217	virtual void extractMovableObject(const String& name, const String& typeName);
2218	/** Extract a previously injected MovableObject.
2219	@remarks
2220	Essentially this does the same as destroyMovableObject, but only
2221	removes the instance from the internal lists, it does not attempt
2222	to destroy it.
2223	*/
2224	virtual void extractMovableObject(MovableObject* m);
2225	/** Extract all injected MovableObjects of a given type.
2226	@remarks
2227	Essentially this does the same as destroyAllMovableObjectsByType,
2228	but only removes the instances from the internal lists, it does not
2229	attempt to destroy them.
2230	*/
2231	virtual void extractAllMovableObjectsByType(const String& typeName);
2232
2233	/** Sets a mask which is bitwise 'and'ed with objects own visibility masks
2234	to determine if the object is visible.
2235	*/
2236	virtual void setVisibilityMask(uint32 vmask) { mVisibilityMask = vmask; }
2237
2238	/** Gets a mask which is bitwise 'and'ed with objects own visibility masks
2239	to determine if the object is visible.
2240	*/
2241	virtual uint32 getVisibilityMask(void) { return mVisibilityMask; }
2242
2243	/** Sets whether the SceneManager should search for visible objects, or
2244	whether they are being manually handled.
2245	@remarks
2246	This is an advanced function, you should not use this unless you know
2247	what you are doing.
2248	*/
2249	virtual void setFindVisibleObjects(bool find) { mFindVisibleObjects = find; }
2250
2251	/** Gets whether the SceneManager should search for visible objects, or
2252	whether they are being manually handled.
2253	*/
2254	virtual bool getFindVisibleObjects(void) { return mFindVisibleObjects; }
2255
2256	/** Render something as if it came from the current queue.
2257	@param pass Material pass to use for setting up this quad.
2258	@param rend Renderable to render
2259	*/
2260	virtual void _injectRenderWithPass(Pass pass, Renderable rend);
2261
2262	/** Indicates to the SceneManager whether it should suppress changing
2263	the RenderSystem states when rendering objects.
2264	@remarks
2265	This method allows you to tell the SceneManager not to change any
2266	RenderSystem state until you tell it to. This method is only
2267	intended for advanced use, don't use it if you're unsure of the
2268	effect. The only RenderSystems calls made are to set the world
2269	matrix for each object (note - view an projection matrices are NOT
2270	SET - they are under your control) and to render the object; it is up to
2271	the caller to do everything else, including enabling any vertex /
2272	fragment programs and updating their parameter state, and binding
2273	parameters to the RenderSystem.
2274	@note
2275	Calling this implicitly disables shadow processing since no shadows
2276	can be rendered without changing state.
2277	@param suppress If true, no RenderSystem state changes will be issued
2278	until this method is called again with a parameter of false.
2279	*/
2280	virtual void _suppressRenderStateChanges(bool suppress);
2281
2282	/** Are render state changes suppressed?
2283	@see _suppressRenderStateChanges
2284	*/
2285	virtual bool _areRenderStateChangesSuppressed(void) const
2286	{ return mSuppressRenderStateChanges; }
2287
2288	/** Internal method for setting up the renderstate for a rendering pass.
2289	@param pass The Pass details to set.
2290	@param evenIfSuppressed Sets the pass details even if render state
2291	changes are suppressed; if you are using this to manually set state
2292	when render state changes are suppressed, you should set this to
2293	true.
2294	@returns
2295	A Pass object that was used instead of the one passed in, can
2296	happen when rendering shadow passes
2297	*/
2298	virtual const Pass* _setPass(const Pass* pass, bool evenIfSuppressed = false);
2299
2300
2301	/** Indicates to the SceneManager whether it should suppress the
2302	active shadow rendering technique until told otherwise.
2303	@remarks
2304	This is a temporary alternative to setShadowTechnique to suppress
2305	the rendering of shadows and forcing all processing down the
2306	standard rendering path. This is intended for internal use only.
2307	@param suppress If true, no shadow rendering will occur until this
2308	method is called again with a parameter of false.
2309	*/
2310	virtual void _suppressShadows(bool suppress);
2311
2312	/** Are shadows suppressed?
2313	@see _suppressShadows
2314	*/
2315	virtual bool _areShadowsSuppressed(void) const
2316	{ return mSuppressShadows; }
2317
2318	/** Render the objects in a given queue group
2319	@remarks You should only call this from a RenderQueueInvocation implementation
2320	*/
2321	virtual void _renderQueueGroupObjects(RenderQueueGroup* group,
2322	QueuedRenderableCollection::OrganisationMode om);
2323
2324	/** Get the rendersystem subclass to which the output of this Scene Manager
2325	gets sent
2326	*/
2327	RenderSystem *getDestinationRenderSystem();
2328
2329	#ifdef GAMETOOLS_ILLUMINATION_MODULE
2330	public:
2331	void prepareRenderQueue_Wrap(){this->prepareRenderQueue();}
2332	#endif
2333
2334	};
2335
2336	/** Default implementation of IntersectionSceneQuery. */
2337	class _OgreExport DefaultIntersectionSceneQuery :
2338	public IntersectionSceneQuery
2339	{
2340	public:
2341	DefaultIntersectionSceneQuery(SceneManager* creator);
2342	~DefaultIntersectionSceneQuery();
2343
2344	/** See IntersectionSceneQuery. */
2345	void execute(IntersectionSceneQueryListener* listener);
2346	};
2347
2348	/** Default implementation of RaySceneQuery. */
2349	class _OgreExport DefaultRaySceneQuery : public RaySceneQuery
2350	{
2351	public:
2352	DefaultRaySceneQuery(SceneManager* creator);
2353	~DefaultRaySceneQuery();
2354
2355	/** See RayScenQuery. */
2356	void execute(RaySceneQueryListener* listener);
2357	};
2358	/** Default implementation of SphereSceneQuery. */
2359	class _OgreExport DefaultSphereSceneQuery : public SphereSceneQuery
2360	{
2361	public:
2362	DefaultSphereSceneQuery(SceneManager* creator);
2363	~DefaultSphereSceneQuery();
2364
2365	/** See SceneQuery. */
2366	void execute(SceneQueryListener* listener);
2367	};
2368	/** Default implementation of PlaneBoundedVolumeListSceneQuery. */
2369	class _OgreExport DefaultPlaneBoundedVolumeListSceneQuery : public PlaneBoundedVolumeListSceneQuery
2370	{
2371	public:
2372	DefaultPlaneBoundedVolumeListSceneQuery(SceneManager* creator);
2373	~DefaultPlaneBoundedVolumeListSceneQuery();
2374
2375	/** See SceneQuery. */
2376	void execute(SceneQueryListener* listener);
2377	};
2378	/** Default implementation of AxisAlignedBoxSceneQuery. */
2379	class _OgreExport DefaultAxisAlignedBoxSceneQuery : public AxisAlignedBoxSceneQuery
2380	{
2381	public:
2382	DefaultAxisAlignedBoxSceneQuery(SceneManager* creator);
2383	~DefaultAxisAlignedBoxSceneQuery();
2384
2385	/** See RayScenQuery. */
2386	void execute(SceneQueryListener* listener);
2387	};
2388
2389
2390	/// Bitmask containing scene types
2391	typedef uint16 SceneTypeMask;
2392
2393	/** Classification of a scene to allow a decision of what type of
2394	SceenManager to provide back to the application.
2395	*/
2396	enum SceneType
2397	{
2398	ST_GENERIC = 1,
2399	ST_EXTERIOR_CLOSE = 2,
2400	ST_EXTERIOR_FAR = 4,
2401	ST_EXTERIOR_REAL_FAR = 8,
2402	ST_INTERIOR = 16
2403	};
2404
2405	/** Structure containing information about a scene manager. */
2406	struct SceneManagerMetaData
2407	{
2408	/// A globally unique string identifying the scene manager type
2409	String typeName;
2410	/// A text description of the scene manager
2411	String description;
2412	/// A mask describing which sorts of scenes this manager can handle
2413	SceneTypeMask sceneTypeMask;
2414	/// Flag indicating whether world geometry is supported
2415	bool worldGeometrySupported;
2416	};
2417
2418
2419
2420	/** Class which will create instances of a given SceneManager. */
2421	class _OgreExport SceneManagerFactory
2422	{
2423	protected:
2424	mutable SceneManagerMetaData mMetaData;
2425	mutable bool mMetaDataInit;
2426	/// Internal method to initialise the metadata, must be implemented
2427	virtual void initMetaData(void) const = 0;
2428	public:
2429	SceneManagerFactory() : mMetaDataInit(true) {}
2430	virtual ~SceneManagerFactory() {}
2431	/** Get information about the SceneManager type created by this factory. */
2432	virtual const SceneManagerMetaData& getMetaData(void) const
2433	{
2434	if (mMetaDataInit)
2435	{
2436	initMetaData();
2437	mMetaDataInit = false;
2438	}
2439	return mMetaData;
2440	}
2441	/** Create a new instance of a SceneManager.
2442	@remarks
2443	Don't call directly, use SceneManagerEnumerator::createSceneManager.
2444	*/
2445	virtual SceneManager* createInstance(const String& instanceName) = 0;
2446	/** Destroy an instance of a SceneManager. */
2447	virtual void destroyInstance(SceneManager* instance) = 0;
2448
2449	};
2450
2451
2452
2453	} // Namespace
2454
2455
2456
2457	#endif

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