Ogre::SubMesh Class Reference
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Defines a part of a complete mesh. More...

#include <OgreSubMesh.h>

Inheritance diagram for Ogre::SubMesh:

Public Types
typedef vector< unsigned short > ::type	IndexMap
	Dedicated index map for translate blend index to bone index (only valid if useSharedVertices = false).
typedef vector< IndexData * >::type	LODFaceList
typedef multimap< size_t, VertexBoneAssignment >::type	VertexBoneAssignmentList
	Multimap of verex bone assignments (orders by vertex index).
typedef MapIterator < VertexBoneAssignmentList >	BoneAssignmentIterator
typedef ConstMapIterator < AliasTextureNamePairList >	AliasTextureIterator
Public Member Functions
	SubMesh ()
	~SubMesh ()
void	setMaterialName (const String &matName, const String &groupName=ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME)
	Sets the name of the Material which this SubMesh will use.
const String &	getMaterialName (void) const
bool	isMatInitialised (void) const
	Returns true if a material has been assigned to the submesh, otherwise returns false.
void	_getRenderOperation (RenderOperation &rend, ushort lodIndex=0)
	Returns a RenderOperation structure required to render this mesh.
void	addBoneAssignment (const VertexBoneAssignment &vertBoneAssign)
	Assigns a vertex to a bone with a given weight, for skeletal animation.
void	clearBoneAssignments (void)
	Removes all bone assignments for this mesh.
BoneAssignmentIterator	getBoneAssignmentIterator (void)
	Gets an iterator for access all bone assignments.
const VertexBoneAssignmentList &	getBoneAssignments ()
	Gets a const reference to the list of bone assignments.
void	_compileBoneAssignments (void)
	Must be called once to compile bone assignments into geometry buffer.
AliasTextureIterator	getAliasTextureIterator (void) const
	Gets an constant iterator to access all texture alias names assigned to this submesh.
void	addTextureAlias (const String &aliasName, const String &textureName)
	Adds the alias or replaces an existing one and associates the texture name to it.
void	removeTextureAlias (const String &aliasName)
	Remove a specific texture alias name from the sub mesh.
void	removeAllTextureAliases (void)
	removes all texture aliases from the sub mesh
bool	hasTextureAliases (void) const
	returns true if the sub mesh has texture aliases
size_t	getTextureAliasCount (void) const
	Gets the number of texture aliases assigned to the sub mesh.
bool	updateMaterialUsingTextureAliases (void)
	The current material used by the submesh is copied into a new material and the submesh's texture aliases are applied if the current texture alias names match those found in the original material.
VertexAnimationType	getVertexAnimationType (void) const
	Get the type of any vertex animation used by dedicated geometry.
bool	getVertexAnimationIncludesNormals () const
	Returns whether animation on dedicated vertex data includes normals.
void	generateExtremes (size_t count)
	Generate the submesh extremes (.
bool	isBuildEdgesEnabled (void) const
	Returns true(by default) if the submesh should be included in the mesh EdgeList, otherwise returns false.
void	setBuildEdgesEnabled (bool b)
void *	operator new (size_t sz, const char file, int line, const char func)
	operator new, with debug line info
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *ptr)
	placement operator new
void *	operator new[] (size_t sz, const char file, int line, const char func)
	array operator new, with debug line info
void *	operator new[] (size_t sz)
void	operator delete (void *ptr)
void	operator delete (void ptr, void )
void	operator delete (void ptr, const char , int, const char *)
void	operator delete[] (void *ptr)
void	operator delete[] (void ptr, const char , int, const char *)
Public Attributes
bool	useSharedVertices
	Indicates if this submesh shares vertex data with other meshes or whether it has it's own vertices.
RenderOperation::OperationType	operationType
	The render operation type used to render this submesh.
VertexData *	vertexData
	Dedicated vertex data (only valid if useSharedVertices = false).
IndexData *	indexData
	Face index data.
IndexMap	blendIndexToBoneIndexMap
LODFaceList	mLodFaceList
vector< Vector3 >::type	extremityPoints
	A list of extreme points on the submesh (optional).
Mesh *	parent
	Reference to parent Mesh (not a smart pointer so child does not keep parent alive).
Protected Member Functions
void	removeLodLevels (void)
	Internal method for removing LOD data.
Protected Attributes
String	mMaterialName
	Name of the material this SubMesh uses.
bool	mMatInitialised
	Is there a material yet?
AliasTextureNamePairList	mTextureAliases
	paired list of texture aliases and texture names
VertexBoneAssignmentList	mBoneAssignments
bool	mBoneAssignmentsOutOfDate
	Flag indicating that bone assignments need to be recompiled.
VertexAnimationType	mVertexAnimationType
	Type of vertex animation for dedicated vertex data (populated by Mesh).
bool	mVertexAnimationIncludesNormals
	Whether normals are included in vertex animation keyframes.
bool	mBuildEdgesEnabled
	Is Build Edges Enabled.
Friends
class	Mesh
class	MeshSerializerImpl
class	MeshSerializerImpl_v1_2
class	MeshSerializerImpl_v1_1

Detailed Description

Defines a part of a complete mesh.

Remarks:: Meshes which make up the definition of a discrete 3D object are made up of potentially multiple parts. This is because different parts of the mesh may use different materials or use different vertex formats, such that a rendering state change is required between them.

: Like the Mesh class, instantiations of 3D objects in the scene share the SubMesh instances, and have the option of overriding their material differences on a per-object basis if required. See the SubEntity class for more information.

Definition at line 61 of file OgreSubMesh.h.

Member Typedef Documentation

typedef ConstMapIterator<AliasTextureNamePairList> Ogre::SubMesh::AliasTextureIterator

Definition at line 194 of file OgreSubMesh.h.

typedef MapIterator<VertexBoneAssignmentList> Ogre::SubMesh::BoneAssignmentIterator

Definition at line 178 of file OgreSubMesh.h.

typedef vector<unsigned short>::type Ogre::SubMesh::IndexMap

Dedicated index map for translate blend index to bone index (only valid if useSharedVertices = false).

Remarks:: This data is completely owned by this submesh.

: We collect actually used bones of all bone assignments, and build the blend index in 'packed' form, then the range of the blend index in vertex data VES_BLEND_INDICES element is continuous, with no gaps. Thus, by minimising the world matrix array constants passing to GPU, we can support more bones for a mesh when hardware skinning is used. The hardware skinning support limit is applied to each set of vertex data in the mesh, in other words, the hardware skinning support limit is applied only to the actually used bones of each SubMeshes, not all bones across the entire Mesh.

: Because the blend index is different to the bone index, therefore, we use the index map to translate the blend index to bone index.

: The use of shared or non-shared index map is determined when model data is converted to the OGRE .mesh format.

Definition at line 109 of file OgreSubMesh.h.

typedef vector<IndexData*>::type Ogre::SubMesh::LODFaceList

Definition at line 112 of file OgreSubMesh.h.

typedef multimap<size_t, VertexBoneAssignment>::type Ogre::SubMesh::VertexBoneAssignmentList

Multimap of verex bone assignments (orders by vertex index).

Definition at line 177 of file OgreSubMesh.h.

Constructor & Destructor Documentation

Ogre::SubMesh::SubMesh ( )

Ogre::SubMesh::~SubMesh ( )

Member Function Documentation

void Ogre::SubMesh::_compileBoneAssignments ( void )

Must be called once to compile bone assignments into geometry buffer.

void Ogre::SubMesh::_getRenderOperation	(	RenderOperation &	rend,
		ushort	lodIndex = `0`
	)

Returns a RenderOperation structure required to render this mesh.

Parameters:

	rend	Reference to a RenderOperation structure to populate.
	lodIndex	The index of the LOD to use.

void Ogre::SubMesh::addBoneAssignment ( const VertexBoneAssignment & vertBoneAssign )

Assigns a vertex to a bone with a given weight, for skeletal animation.

Remarks:: This method is only valid after calling setSkeletonName. Since this is a one-off process there exists only 'addBoneAssignment' and 'clearBoneAssignments' methods, no 'editBoneAssignment'. You should not need to modify bone assignments during rendering (only the positions of bones) and OGRE reserves the right to do some internal data reformatting of this information, depending on render system requirements.

: This method is for assigning weights to the dedicated geometry of the SubMesh. To assign weights to the shared Mesh geometry, see the equivalent methods on Mesh.

void Ogre::SubMesh::addTextureAlias	(	const String &	aliasName,
		const String &	textureName
	)

Adds the alias or replaces an existing one and associates the texture name to it.

Remarks:: The submesh uses the texture alias to replace textures used in the material applied to the submesh.

Parameters:

	aliasName	is the name of the alias.
	textureName	is the name of the texture to be associated with the alias

void Ogre::SubMesh::clearBoneAssignments ( void )

Removes all bone assignments for this mesh.

: This method is for assigning weights to the dedicated geometry of the SubMesh. To assign weights to the shared Mesh geometry, see the equivalent methods on Mesh.

void Ogre::SubMesh::generateExtremes ( size_t count )

Generate the submesh extremes (.

See also:: extremityPoints).

Parameters:

count

Number of extreme points to compute for the submesh.

AliasTextureIterator Ogre::SubMesh::getAliasTextureIterator ( void ) const

Gets an constant iterator to access all texture alias names assigned to this submesh.

BoneAssignmentIterator Ogre::SubMesh::getBoneAssignmentIterator ( void )

Gets an iterator for access all bone assignments.

Remarks:: Only valid if this SubMesh has dedicated geometry.

const VertexBoneAssignmentList& Ogre::SubMesh::getBoneAssignments ( )

Gets a const reference to the list of bone assignments.

Definition at line 188 of file OgreSubMesh.h.

const String& Ogre::SubMesh::getMaterialName ( void ) const

size_t Ogre::SubMesh::getTextureAliasCount ( void ) const

Gets the number of texture aliases assigned to the sub mesh.

Definition at line 224 of file OgreSubMesh.h.

bool Ogre::SubMesh::getVertexAnimationIncludesNormals ( ) const

Returns whether animation on dedicated vertex data includes normals.

Definition at line 243 of file OgreSubMesh.h.

VertexAnimationType Ogre::SubMesh::getVertexAnimationType ( void ) const

Get the type of any vertex animation used by dedicated geometry.

bool Ogre::SubMesh::hasTextureAliases ( void ) const

returns true if the sub mesh has texture aliases

Definition at line 221 of file OgreSubMesh.h.

bool Ogre::SubMesh::isBuildEdgesEnabled ( void ) const

Returns true(by default) if the submesh should be included in the mesh EdgeList, otherwise returns false.

Definition at line 254 of file OgreSubMesh.h.

bool Ogre::SubMesh::isMatInitialised ( void ) const

Returns true if a material has been assigned to the submesh, otherwise returns false.

template<class Alloc >

void Ogre::AllocatedObject< Alloc >::operator delete	(	void *	ptr,
		const char *	,
		int	,
		const char *
	)			`[inherited]`

Definition at line 107 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void Ogre::AllocatedObject< Alloc >::operator delete	(	void *	ptr,
		void *
	)			`[inherited]`

Definition at line 101 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void Ogre::AllocatedObject< Alloc >::operator delete ( void * ptr ) [inherited]

Definition at line 95 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void Ogre::AllocatedObject< Alloc >::operator delete[]	(	void *	ptr,
		const char *	,
		int	,
		const char *
	)			`[inherited]`

Definition at line 118 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void Ogre::AllocatedObject< Alloc >::operator delete[] ( void * ptr ) [inherited]

Definition at line 112 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void* Ogre::AllocatedObject< Alloc >::operator new	(	size_t	sz,
		void *	ptr
	)			`[inherited]`

placement operator new

Definition at line 78 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void* Ogre::AllocatedObject< Alloc >::operator new ( size_t sz ) [inherited]

Definition at line 72 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void* Ogre::AllocatedObject< Alloc >::operator new	(	size_t	sz,
		const char *	file,
		int	line,
		const char *	func
	)			`[inherited]`

operator new, with debug line info

Definition at line 67 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t sz ) [inherited]

Definition at line 90 of file OgreMemoryAllocatedObject.h.

template<class Alloc >

void* Ogre::AllocatedObject< Alloc >::operator new[]	(	size_t	sz,
		const char *	file,
		int	line,
		const char *	func
	)			`[inherited]`

array operator new, with debug line info

Definition at line 85 of file OgreMemoryAllocatedObject.h.

void Ogre::SubMesh::removeAllTextureAliases ( void )

removes all texture aliases from the sub mesh

void Ogre::SubMesh::removeLodLevels ( void ) [protected]

Internal method for removing LOD data.

void Ogre::SubMesh::removeTextureAlias ( const String & aliasName )

Remove a specific texture alias name from the sub mesh.

Parameters:

aliasName

is the name of the alias to be removed. If it is not found then it is ignored.

void Ogre::SubMesh::setBuildEdgesEnabled ( bool b )

void Ogre::SubMesh::setMaterialName	(	const String &	matName,
		const String &	groupName = `ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME`
	)

Sets the name of the Material which this SubMesh will use.

bool Ogre::SubMesh::updateMaterialUsingTextureAliases ( void )

The current material used by the submesh is copied into a new material and the submesh's texture aliases are applied if the current texture alias names match those found in the original material.

Remarks:: The submesh's texture aliases must be setup prior to calling this method. If a new material has to be created, the subMesh autogenerates the new name. The new name is the old name + "_" + number.

Returns:: True if texture aliases were applied and a new material was created.

Friends And Related Function Documentation

friend class Mesh [friend]

Definition at line 63 of file OgreSubMesh.h.

friend class MeshSerializerImpl [friend]

Definition at line 64 of file OgreSubMesh.h.

friend class MeshSerializerImpl_v1_1 [friend]

Definition at line 66 of file OgreSubMesh.h.

friend class MeshSerializerImpl_v1_2 [friend]

Definition at line 65 of file OgreSubMesh.h.

Member Data Documentation

IndexMap Ogre::SubMesh::blendIndexToBoneIndexMap

Definition at line 110 of file OgreSubMesh.h.

vector<Vector3>::type Ogre::SubMesh::extremityPoints

A list of extreme points on the submesh (optional).

Remarks:: These points are some arbitrary points on the mesh that are used by engine to better sort submeshes by depth. This doesn't matter much for non-transparent submeshes, as Z-buffer takes care of invisible surface culling anyway, but is pretty useful for semi-transparent submeshes because the order in which transparent submeshes must be rendered cannot be always correctly deduced from entity position.

: These points are intelligently chosen from the points that make up the submesh, the criteria for choosing them should be that these points somewhat characterize the submesh outline, e.g. they should not be close to each other, and they should be on the outer hull of the submesh. They can be stored in the .mesh file, or generated at runtime (see generateExtremes ()).