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source: GTP/trunk/App/Demos/Geom/OgreStuff/include/OgreEntity.h @ 1030

Revision 1030, 29.3 KB checked in by gumbau, 18 years ago (diff)
Ogre Stuff initial import

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1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://ogre.sourceforge.net/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23	-----------------------------------------------------------------------------
24	*/
25	#ifndef __Entity_H__
26	#define __Entity_H__
27
28	#include "OgrePrerequisites.h"
29	#include "OgreCommon.h"
30
31	#include "OgreString.h"
32	#include "OgreMovableObject.h"
33	#include "OgreAnimationState.h"
34	#include "OgreQuaternion.h"
35	#include "OgreVector3.h"
36	#include "OgreHardwareBufferManager.h"
37	#include "OgreMesh.h"
38
39	namespace Ogre {
40	/** Defines an instance of a discrete, movable object based on a Mesh.
41	@remarks
42	Ogre generally divides renderable objects into 2 groups, discrete
43	(separate) and relatively small objects which move around the world,
44	and large, sprawling geometry which makes up generally immovable
45	scenery, aka 'level geometry'.
46	@par
47	The Mesh and SubMesh classes deal with the definition of the geometry
48	used by discrete movable objects. Entities are actual instances of
49	objects based on this geometry in the world. Therefore there is
50	usually a single set Mesh for a car, but there may be multiple
51	entities based on it in the world. Entities are able to override
52	aspects of the Mesh it is defined by, such as changing material
53	properties per instance (so you can have many cars using the same
54	geometry but different textures for example). Because a Mesh is split
55	into SubMeshes for this purpose, the Entity class is a grouping class
56	(much like the Mesh class) and much of the detail regarding
57	individual changes is kept in the SubEntity class. There is a 1:1
58	relationship between SubEntity instances and the SubMesh instances
59	associated with the Mesh the Entity is based on.
60	@par
61	Entity and SubEntity classes are never created directly. Use the
62	createEntity method of the SceneManager (passing a model name) to
63	create one.
64	@par
65	Entities are included in the scene by associating them with a
66	SceneNode, using the attachEntity method. See the SceneNode class
67	for full information.
68	@note
69	No functions were declared virtual to improve performance.
70	*/
71	class _OgreExport Entity: public MovableObject
72	{
73	// Allow SceneManager full access
74	friend class SceneManager;
75	friend class SubEntity;
76	public:
77	typedef std::set<Entity*> EntitySet;
78
79	protected:
80
81	/** Private constructor (instances cannot be created directly).
82	*/
83	Entity();
84	/** Private constructor - specify name (the usual constructor used).
85	*/
86	Entity( const String& name, MeshPtr& mesh, SceneManager* creator);
87
88	/** Name of the entity; used for location in the scene.
89	*/
90	String mName;
91
92	/** The Mesh that this Entity is based on.
93	*/
94	MeshPtr mMesh;
95
96	/** List of SubEntities (point to SubMeshes).
97	*/
98	typedef std::vector<SubEntity*> SubEntityList;
99	SubEntityList mSubEntityList;
100
101	/** Pointer back to the SceneManager that created this instance, for
102	notification purposes.
103	*/
104	SceneManager* mCreatorSceneManager;
105
106
107	/// State of animation for animable meshes
108	AnimationStateSet* mAnimationState;
109
110	/// Shared class-level name for Movable type
111	static String msMovableType;
112
113
114	/// Temp blend buffer details for shared geometry
115	TempBlendedBufferInfo mTempBlendedBuffer;
116	/// Temp blend buffer details for shared geometry
117	VertexData* mSharedBlendedVertexData;
118
119	/** Internal method - given vertex data which could be from the Mesh or
120	any submesh, finds the temporary blend copy. */
121	const VertexData* findBlendedVertexData(const VertexData* orig);
122	/** Internal method - given vertex data which could be from the Mesh or
123	any SubMesh, finds the corresponding SubEntity. */
124	SubEntity* findSubEntityForVertexData(const VertexData* orig);
125
126	/** Internal method for extracting metadata out of source vertex data
127	for fast assignment of temporary buffers later. */
128	void extractTempBufferInfo(VertexData* sourceData, TempBlendedBufferInfo* info);
129	/** Internal method to clone vertex data definitions but to remove blend buffers. */
130	VertexData* cloneVertexDataRemoveBlendInfo(const VertexData* source);
131	/** Internal method for preparing this Entity for use in animation. */
132	void prepareTempBlendBuffers(void);
133
134	/// Cached bone matrices, including any world transform
135	Matrix4 *mBoneMatrices;
136	unsigned short mNumBoneMatrices;
137	/// Records the last frame in which animation was updated
138	unsigned long mFrameAnimationLastUpdated;
139
140	/// Perform all the updates required for an animated entity
141	void updateAnimation(void);
142
143	/// Records the last frame in which the bones was updated
144	/// It's a pointer because it can be shared between different entities with
145	/// a shared skeleton.
146	unsigned long *mFrameBonesLastUpdated;
147
148	/**
149	* A set of all the entities which shares a single SkeletonInstance.
150	* This is only created if the entity is in fact sharing it's SkeletonInstance with
151	* other Entities.
152	*/
153	EntitySet* mSharedSkeletonEntities;
154
155	/// Private method to cache bone matrices from skeleton
156	void cacheBoneMatrices(void);
157
158	/// Flag determines whether or not to display skeleton
159	bool mDisplaySkeleton;
160	/// Flag indicating whether hardware skinning is supported by this entities materials
161	bool mHardwareSkinning;
162	/// Counter indicating number of requests for software skinning.
163	int mSoftwareSkinningRequests;
164	/// Counter indicating number of requests for software skinned normals.
165	int mSoftwareSkinningNormalsRequests;
166	/// Flag indicating whether we have a vertex program in use on any of our subentities
167	bool mVertexProgramInUse;
168
169
170	/// The LOD number of the mesh to use, calculated by _notifyCurrentCamera
171	ushort mMeshLodIndex;
172
173	/// LOD bias factor, inverted for optimisation when calculating adjusted depth
174	Real mMeshLodFactorInv;
175	/// Index of minimum detail LOD (NB higher index is lower detail)
176	ushort mMinMeshLodIndex;
177	/// Index of maximum detail LOD (NB lower index is higher detail)
178	ushort mMaxMeshLodIndex;
179
180	/// LOD bias factor, inverted for optimisation when calculating adjusted depth
181	Real mMaterialLodFactorInv;
182	/// Index of minimum detail LOD (NB higher index is lower detail)
183	ushort mMinMaterialLodIndex;
184	/// Index of maximum detail LOD (NB lower index is higher detail)
185	ushort mMaxMaterialLodIndex;
186
187	/// Flag indicating that mesh uses manual LOD and so might have multiple SubEntity versions
188	bool mUsingManualLOD;
189	/** List of LOD Entity instances (for manual LODs).
190	We don't know when the mesh is using manual LODs whether one LOD to the next will have the
191	same number of SubMeshes, therefore we have to allow a separate Entity list
192	with each alternate one.
193	*/
194	typedef std::vector<Entity*> LODEntityList;
195	LODEntityList mLodEntityList;
196
197	/** This Entity's personal copy of the skeleton, if skeletally animated
198	*/
199	SkeletonInstance* mSkeletonInstance;
200
201	/** Builds a list of SubEntities based on the SubMeshes contained in the Mesh. */
202	void buildSubEntityList(MeshPtr& mesh, SubEntityList* sublist);
203
204	/// internal implementation of attaching a 'child' object to this entity and assign the parent node to the child entity
205	void attachObjectImpl(MovableObject pMovable, TagPoint pAttachingPoint);
206
207	/// internal implementation of detaching a 'child' object of this entity and clear the parent node of the child entity
208	void detachObjectImpl(MovableObject* pObject);
209
210	/// internal implementation of detaching all 'child' objects of this entity
211	void detachAllObjectsImpl(void);
212
213	/// Trigger reevaluation of the kind of vertex processing in use
214	void reevaluateVertexProcessing(void);
215
216	public:
217	/// Contains the child objects (attached to bones) indexed by name
218	typedef std::map<String, MovableObject*> ChildObjectList;
219	protected:
220	ChildObjectList mChildObjectList;
221
222
223	/// Bounding box that 'contains' all the mesh of each child entity
224	AxisAlignedBox *mFullBoundingBox;
225
226	bool mNormaliseNormals;
227
228	ShadowRenderableList mShadowRenderables;
229
230	/** Nested class to allow entity shadows. */
231	class _OgreExport EntityShadowRenderable : public ShadowRenderable
232	{
233	protected:
234	Entity* mParent;
235	// Shared link to position buffer
236	HardwareVertexBufferSharedPtr mPositionBuffer;
237	// Shared link to w-coord buffer (optional)
238	HardwareVertexBufferSharedPtr mWBuffer;
239	// Link to original vertex data
240	const VertexData* mOriginalVertexData;
241	// Original position buffer source binding
242	unsigned short mOriginalPosBufferBinding;
243	/// Link to SubEntity, only present if SubEntity has it's own geometry
244	SubEntity* mSubEntity;
245
246
247	public:
248	EntityShadowRenderable(Entity* parent,
249	HardwareIndexBufferSharedPtr* indexBuffer, const VertexData* vertexData,
250	bool createSeparateLightCap, SubEntity* subent, bool isLightCap = false);
251	~EntityShadowRenderable();
252	/// Overridden from ShadowRenderable
253	void getWorldTransforms(Matrix4* xform) const;
254	/// Overridden from ShadowRenderable
255	const Quaternion& getWorldOrientation(void) const;
256	/// Overridden from ShadowRenderable
257	const Vector3& getWorldPosition(void) const;
258	HardwareVertexBufferSharedPtr getPositionBuffer(void) { return mPositionBuffer; }
259	HardwareVertexBufferSharedPtr getWBuffer(void) { return mWBuffer; }
260	/// Rebind the source positions (for temp buffer users)
261	void rebindPositionBuffer(void);
262	/// Overridden from ShadowRenderable
263	bool isVisible(void) const;
264
265	};
266	public:
267	/** Default destructor.
268	*/
269	~Entity();
270
271	/** Gets the Mesh that this Entity is based on.
272	*/
273	MeshPtr& getMesh(void);
274
275	/** Gets a pointer to a SubEntity, ie a part of an Entity.
276	*/
277	SubEntity* getSubEntity(unsigned int index);
278
279	/** Gets a pointer to a SubEntity by name
280	@remarks - names should be initialized during a Mesh creation.
281	*/
282	SubEntity* getSubEntity( const String& name );
283
284	/** Retrieves the number of SubEntity objects making up this entity.
285	*/
286	unsigned int getNumSubEntities(void) const;
287
288	/** Clones this entity and returns a pointer to the clone.
289	@remarks
290	Useful method for duplicating an entity. The new entity must be
291	given a unique name, and is not attached to the scene in any way
292	so must be attached to a SceneNode to be visible (exactly as
293	entities returned from SceneManager::createEntity).
294	@param
295	newName Name for the new entity.
296	*/
297	Entity* clone( const String& newName );
298
299	/** Sets the material to use for the whole of this entity.
300	@remarks
301	This is a shortcut method to set all the materials for all
302	subentities of this entity. Only use this method is you want to
303	set the same material for all subentities or if you know there
304	is only one. Otherwise call getSubEntity() and call the same
305	method on the individual SubEntity.
306	*/
307	void setMaterialName(const String& name);
308
309	/** Overridden - see MovableObject.
310	*/
311	void _notifyCurrentCamera(Camera* cam);
312
313	/// Overridden - see MovableObject.
314	void setRenderQueueGroup(RenderQueueGroupID queueID);
315
316	/** Overridden - see MovableObject.
317	*/
318	const AxisAlignedBox& getBoundingBox(void) const;
319
320	/// merge all the child object Bounds a return it
321	AxisAlignedBox getChildObjectsBoundingBox(void) const;
322
323	/** Overridden - see MovableObject.
324	*/
325	void _updateRenderQueue(RenderQueue* queue);
326
327	/** Overridden from MovableObject */
328	const String& getName(void) const;
329
330	/** Overridden from MovableObject */
331	const String& getMovableType(void) const;
332
333	/** For entities based on animated meshes, gets the AnimationState object for a single animation.
334	@remarks
335	You animate an entity by updating the animation state objects. Each of these represents the
336	current state of each animation available to the entity. The AnimationState objects are
337	initialised from the Mesh object.
338	*/
339	AnimationState* getAnimationState(const String& name);
340	/** For entities based on animated meshes, gets the AnimationState objects for all animations.
341	@returns
342	In case the entity is animated, this functions returns the pointer to a AnimationStateSet
343	containing all animations of the entries. If the entity is not animated, it returns 0.
344	@remarks
345	You animate an entity by updating the animation state objects. Each of these represents the
346	current state of each animation available to the entity. The AnimationState objects are
347	initialised from the Mesh object.
348	*/
349	AnimationStateSet* getAllAnimationStates(void);
350
351	/** Tells the Entity whether or not it should display it's skeleton, if it has one.
352	*/
353	void setDisplaySkeleton(bool display);
354
355	/** Returns whether or not the entity is currently displaying its skeleton.
356	*/
357	bool getDisplaySkeleton(void) const;
358
359
360	/** Gets a pointer to the entity representing the numbered manual level of detail.
361	@remarks
362	The zero-based index never includes the original entity, unlike
363	Mesh::getLodLevel.
364	*/
365	Entity* getManualLodLevel(size_t index) const;
366
367	/** Returns the number of manual levels of detail that this entity supports.
368	@remarks
369	This number never includes the original entity, it is difference
370	with Mesh::getNumLodLevels.
371	*/
372	size_t getNumManualLodLevels(void) const;
373
374	/** Sets a level-of-detail bias for the mesh detail of this entity.
375	@remarks
376	Level of detail reduction is normally applied automatically based on the Mesh
377	settings. However, it is possible to influence this behaviour for this entity
378	by adjusting the LOD bias. This 'nudges' the mesh level of detail used for this
379	entity up or down depending on your requirements. You might want to use this
380	if there was a particularly important entity in your scene which you wanted to
381	detail better than the others, such as a player model.
382	@par
383	There are three parameters to this method; the first is a factor to apply; it
384	defaults to 1.0 (no change), by increasing this to say 2.0, this model would
385	take twice as long to reduce in detail, whilst at 0.5 this entity would use lower
386	detail versions twice as quickly. The other 2 parameters are hard limits which
387	let you set the maximum and minimum level-of-detail version to use, after all
388	other calculations have been made. This lets you say that this entity should
389	never be simplified, or that it can only use LODs below a certain level even
390	when right next to the camera.
391	@param factor Proportional factor to apply to the distance at which LOD is changed.
392	Higher values increase the distance at which higher LODs are displayed (2.0 is
393	twice the normal distance, 0.5 is half).
394	@param maxDetailIndex The index of the maximum LOD this entity is allowed to use (lower
395	indexes are higher detail: index 0 is the original full detail model).
396	@param minDetailIndex The index of the minimum LOD this entity is allowed to use (higher
397	indexes are lower detail. Use something like 99 if you want unlimited LODs (the actual
398	LOD will be limited by the number in the Mesh)
399	*/
400	void setMeshLodBias(Real factor, ushort maxDetailIndex = 0, ushort minDetailIndex = 99);
401
402	/** Sets a level-of-detail bias for the material detail of this entity.
403	@remarks
404	Level of detail reduction is normally applied automatically based on the Material
405	settings. However, it is possible to influence this behaviour for this entity
406	by adjusting the LOD bias. This 'nudges' the material level of detail used for this
407	entity up or down depending on your requirements. You might want to use this
408	if there was a particularly important entity in your scene which you wanted to
409	detail better than the others, such as a player model.
410	@par
411	There are three parameters to this method; the first is a factor to apply; it
412	defaults to 1.0 (no change), by increasing this to say 2.0, this entity would
413	take twice as long to use a lower detail material, whilst at 0.5 this entity
414	would use lower detail versions twice as quickly. The other 2 parameters are
415	hard limits which let you set the maximum and minimum level-of-detail index
416	to use, after all other calculations have been made. This lets you say that
417	this entity should never be simplified, or that it can only use LODs below
418	a certain level even when right next to the camera.
419	@param factor Proportional factor to apply to the distance at which LOD is changed.
420	Higher values increase the distance at which higher LODs are displayed (2.0 is
421	twice the normal distance, 0.5 is half).
422	@param maxDetailIndex The index of the maximum LOD this entity is allowed to use (lower
423	indexes are higher detail: index 0 is the original full detail model).
424	@param minDetailIndex The index of the minimum LOD this entity is allowed to use (higher
425	indexes are lower detail. Use something like 99 if you want unlimited LODs (the actual
426	LOD will be limited by the number of lod indexes used in the Material)
427	*/
428	void setMaterialLodBias(Real factor, ushort maxDetailIndex = 0, ushort minDetailIndex = 99);
429
430	/** Sets the rendering detail of this entire entity (solid, wireframe etc) */
431	void setRenderDetail(SceneDetailLevel renderDetail);
432
433	/** Sets whether the rendering detail of this entire entity may be
434	overridden by the camera detail settings.
435	*/
436	void setRenderDetailOverrideable(bool renderDetailOverrideable);
437	/** Attaches another object to a certain bone of the skeleton which this entity uses.
438	@remarks
439	This method can be used to attach another object to an animated part of this entity,
440	by attaching it to a bone in the skeleton (with an offset if required). As this entity
441	is animated, the attached object will move relative to the bone to which it is attached.
442	@param boneName The name of the bone (in the skeleton) to attach this object
443	@param pMovable Pointer to the object to attach
444	@param offsetOrientation An adjustment to the orientation of the attached object, relative to the bone.
445	@param offsetPosition An adjustment to the position of the attached object, relative to the bone.
446	*/
447	void attachObjectToBone(const String &boneName, MovableObject *pMovable, const Quaternion &offsetOrientation = Quaternion::IDENTITY, const Vector3 &offsetPosition = Vector3::ZERO);
448
449	/// detach a MovableObject previously attached using attachObjectToBone
450	MovableObject* detachObjectFromBone(const String &movableName);
451
452	/** Detaches an object by pointer.
453	@remarks
454	This method is need when destroy a MovableObject which attached to a bone of this entity.
455	But sometimes the object may be not in the child object list because it is a lod entity,
456	this method can safely detect and ignore in this case.
457	*/
458	void detachObjectFromBone(MovableObject* obj);
459
460	/// Detach all MovableObjects previously attached using attachObjectToBone
461	void detachAllObjectsFromBone(void);
462
463	typedef MapIterator<ChildObjectList> ChildObjectListIterator;
464	/** Gets an iterator to the list of objects attached to bones on this entity. */
465	ChildObjectListIterator getAttachedObjectIterator(void);
466	/** @see MovableObject::getBoundingRadius */
467	Real getBoundingRadius(void) const;
468	/** @copy MovableObject::getWorldBoundingBox */
469	const AxisAlignedBox& getWorldBoundingBox(bool derive = false) const;
470	/** @copy MovableObject::getWorldBoundingSphere */
471	const Sphere& getWorldBoundingSphere(bool derive = false) const;
472
473	/** If set to true, this forces normals of this entity to be normalised
474	dynamically by the hardware.
475	@remarks
476	This option can be used to prevent lighting variations when scaling an
477	Entity using a SceneNode - normally because this scaling is hardware
478	based, the normals get scaled too which causes lighting to become inconsistent.
479	However, this has an overhead so only do this if you really need to.
480	*/
481	void setNormaliseNormals(bool normalise) { mNormaliseNormals = normalise; }
482
483	/** Returns true if this entity has auto-normalisation of normals set. */
484	bool getNormaliseNormals(void) const {return mNormaliseNormals; }
485
486
487	/** Overridden member from ShadowCaster. */
488	EdgeData* getEdgeList(void);
489	/** Overridden member from ShadowCaster. */
490	ShadowRenderableListIterator getShadowVolumeRenderableIterator(
491	ShadowTechnique shadowTechnique, const Light* light,
492	HardwareIndexBufferSharedPtr* indexBuffer,
493	bool extrudeVertices, Real extrusionDistance, unsigned long flags = 0 );
494
495	/** Internal method for retrieving bone matrix information. */
496	const Matrix4* _getBoneMatrices(void) { return mBoneMatrices;}
497	/** Internal method for retrieving bone matrix information. */
498	unsigned short _getNumBoneMatrices(void) { return mNumBoneMatrices; }
499	/** Returns whether or not this entity is skeletally animated. */
500	bool hasSkeleton(void) { return mSkeletonInstance != 0; }
501	/** Get this Entity's personal skeleton instance. */
502	SkeletonInstance* getSkeleton(void) { return mSkeletonInstance; }
503	/** Returns whether or not hardware skinning is enabled.
504	@remarks
505	Because fixed-function indexed vertex blending is rarely supported
506	by existing graphics cards, hardware skinning can only be done if
507	the vertex programs in the materials used to render an entity support
508	it. Therefore, this method will only return true if all the materials
509	assigned to this entity have vertex programs assigned, and all those
510	vertex programs must support 'include_skeletal_animation true'.
511	*/
512	bool isHardwareSkinningEnabled(void) const { return mHardwareSkinning; }
513	/** Returns the number of requests that have been made for software skinning
514	@remarks
515	If non-zero then software skinning will be performed in updateAnimation
516	regardless of the current setting of isHardwareSkinningEnabled.
517	Requests for software skinning are made by calling the
518	addSoftwareSkinningRequest() method.
519	*/
520	int getSoftwareSkinningRequests(void) const { return mSoftwareSkinningRequests; }
521	/** Returns the number of requests that have been made for software skinning of normals
522	@remarks
523	If non-zero, and getSoftwareSkinningRequests() also returns non-zero,
524	then software skinning of normals will be performed in updateAnimation
525	regardless of the current setting of isHardwareSkinningEnabled.
526	Currently it is not possible to force software skinning of only normals.
527	Consequently this value is always less than or equal to that returned
528	by getSoftwareSkinningRequests().
529	Requests for software skinning of normals are made by calling the
530	addSoftwareSkinningRequest() method with 'true' as the parameter.
531	*/
532	int getSoftwareSkinningNormalsRequests(void) const { return mSoftwareSkinningNormalsRequests; }
533	/** Add a request for software skinning
534	@remarks
535	Tells the entity to perform skinning calculations for skeletal
536	animations in software, regardless of the current setting of
537	isHardwareSkinningEnabled(). Software skinning will be performed
538	any time one or more requests have been made. If 'normalsAlso' is
539	'true', then the entity will also do software blending on normal
540	vectors, in addition to positions. This advanced method useful for
541	situations in which access to actual mesh vertices is required,
542	such as accurate collision detection or certain advanced shading
543	techniques. When software skinning is no longer needed,
544	the caller of this method should always remove the request by calling
545	removeSoftwareSkinningRequest(), passing the same value for
546	'normalsAlso'.
547	*/
548	void addSoftwareSkinningRequest(bool normalsAlso);
549	/** Removes a request for software skinning
550	@remarks
551	Calling this decrements the entity's internal counter of the number
552	of requests for software skinning. If the counter is already zero
553	then calling this method throws an exception. The 'normalsAlso'
554	flag if set to 'true' will also decrement the internal counter of
555	number of requests for software skinning of normals.
556	*/
557	void removeSoftwareSkinningRequest(bool normalsAlso);
558
559	/** Overridden from MovableObject */
560	void _notifyAttached(Node* parent, bool isTagPoint = false);
561
562	/** Shares the SkeletonInstance with the supplied entity.
563	* Note that in order for this to work, both entities must have the same
564	* Skeleton.
565	*/
566	void shareSkeletonInstanceWith(Entity* entity);
567
568
569	/** Stops sharing the SkeletonInstance with other entities.
570	*/
571	void Entity::stopSharingSkeletonInstance();
572
573
574	/**
575	* Returns whether this entity shares it's SkeltonInstance with other entity instances.
576	*/
577	inline bool sharesSkeletonInstance() const { return mSharedSkeletonEntities != NULL; }
578
579	/**
580	* Returns a pointer to the set of entities which share a SkeletonInstance.
581	* If this instance does not share it's SkeletonInstance with other instances NULL will be returned
582	*/
583	inline const EntitySet* getSkeletonInstanceSharingSet() const { return mSharedSkeletonEntities; }
584
585	/** Updates the internal animation state set to include the latest
586	available animations from the attached skeleton.
587	@remarks
588	Use this method if you manually add animations to a skeleton, or have
589	linked the skeleton to another for animation purposes since creating
590	this entity.
591	@note
592	If you have called getAnimationState prior to calling this method,
593	the pointers will still remain valid.
594	*/
595	void refreshAvailableAnimationState(void);
596
597	/** Advanced method to perform all the updates required for an animated entity.
598	@remarks
599	You don't normally need to call this, but it's here incase you wish
600	to manually update the animation of an Entity at a specific point in
601	time. Animation will not be updated more than once a frame no matter
602	how many times you call this method.
603	*/
604	void _updateAnimation(void);
605
606	/** Advanced method to get the temporarily blended vertex information
607	for entities which are software skinned.
608	*/
609	const VertexData* _getSharedBlendedVertexData(void) const;
610
611
612
613	};
614
615	} // namespace
616
617	#endif

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