# Ogre::SubEntity Class Reference

Utility class which defines the sub-parts of an Entity. More...

`#include <OgreSubEntity.h>`

Inheritance diagram for Ogre::SubEntity:
[legend]

List of all members.

## Public Member Functions

const String & | getMaterialName () const
| Gets the name of the Material in use by this instance.
void | setMaterialName (const String &name)
| Sets the name of the Material to be used.
virtual void | setVisible (bool visible)
| Tells this SubEntity whether to be visible or not.
virtual bool | isVisible (void) const
| Returns whether or not this SubEntity is supposed to be visible.
SubMesh * | getSubMesh (void)
| Accessor method to read mesh data.
Entity * | getParent (void) const
| Accessor to get parent Entity.
const MaterialPtr & | getMaterial (void) const
| Overridden - see Renderable.
Technique * | getTechnique (void) const
| Overridden - see Renderable.
void | getRenderOperation (RenderOperation &op)
| Overridden - see Renderable.
void | getWorldTransforms (Matrix4 *xform) const
| Overridden - see Renderable.
const Quaternion & | getWorldOrientation (void) const
| Gets the worldspace orientation of this renderable; this is used in order to more efficiently update parameters to vertex & fragment programs, since inverting Quaterion and Vector in order to derive object-space positions / directions for cameras and lights is much more efficient than inverting a complete 4x4 matrix, and also eliminates problems introduced by scaling.
const Vector3 & | getWorldPosition (void) const
| Gets the worldspace position of this renderable; this is used in order to more efficiently update parameters to vertex & fragment programs, since inverting Quaterion and Vector in order to derive object-space positions / directions for cameras and lights is much more efficient than inverting a complete 4x4 matrix, and also eliminates problems introduced by scaling.
bool | getNormaliseNormals (void) const
| Overridden - see Renderable.
unsigned short | getNumWorldTransforms (void) const
| Overridden - see Renderable.
Real | getSquaredViewDepth (const Camera *cam) const
| Overridden, see Renderable.
const LightList & | getLights (void) const

Gets a list of lights, ordered relative to how close they are to this renderable.

Remarks:
  Directional lights, which have no position, will always be first on this list.

bool | getCastsShadows (void) const

Method which reports whether this renderable would normally cast a shadow.

Remarks:
  Subclasses should override this if they could have been used to generate a shadow.

VertexData * | _getSkelAnimVertexData (void)
| Advanced method to get the temporarily blended vertex information for entities which are software skinned.
VertexData * | _getSoftwareVertexAnimVertexData (void)
| Advanced method to get the temporarily blended software morph vertex information.
VertexData * | _getHardwareVertexAnimVertexData (void)
| Advanced method to get the hardware morph vertex information.
TempBlendedBufferInfo * | _getSkelAnimTempBufferInfo (void)
| Advanced method to get the temp buffer information for software skeletal animation.
TempBlendedBufferInfo * | _getVertexAnimTempBufferInfo (void)
| Advanced method to get the temp buffer information for software morph animation.
VertexData * | getVertexDataForBinding (void)
| Retrieve the VertexData which should be used for GPU binding.
void | _markBuffersUnusedForAnimation (void)
| Mark all vertex data as so far unanimated.
void | _markBuffersUsedForAnimation (void)
| Mark all vertex data as animated.
bool | _getBuffersMarkedForAnimation (void) const
| Are buffers already marked as vertex animated?
void | _restoreBuffersForUnusedAnimation (bool hardwareAnimation)
| Internal method to copy original vertex data to the morph structures should there be no active animation in use.
void | _updateCustomGpuParameter (const GpuProgramParameters::AutoConstantEntry &constantEntry, GpuProgramParameters *params) const
| Overridden from Renderble to provide some custom behaviour.
void | _invalidateCameraCache ()
| Invalidate the camera distance cache.
void | setUseIdentityProjection (bool useIdentityProjection)
| Sets whether or not to use an 'identity' projection.
bool | getUseIdentityProjection (void) const
| Returns whether or not to use an 'identity' projection.
void | setUseIdentityView (bool useIdentityView)
| Sets whether or not to use an 'identity' view.
bool | getUseIdentityView (void) const
| Returns whether or not to use an 'identity' view.
virtual const PlaneList & | getClipPlanes () const
void | setCustomParameter (size_t index, const Vector4 &value)
| Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.
const Vector4 & | getCustomParameter (size_t index) const
| Gets the custom value associated with this Renderable at the given index.
virtual void | setPolygonModeOverrideable (bool override)
| Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.
virtual bool | getPolygonModeOverrideable (void) const
| Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

## Protected Types

typedef std::map < size_t, Vector4 > | CustomParameterMap

## Protected Member Functions

| SubEntity (Entity *parent, SubMesh *subMeshBasis)
| Private constructor - don't allow creation by anybody else.
virtual | ~SubEntity ()
| Private destructor.
void | prepareTempBlendBuffers (void)
| Internal method for preparing this Entity for use in animation.

## Protected Attributes

Entity * | mParentEntity
| Pointer to parent.
String | mMaterialName
| Name of Material in use by this SubEntity.
MaterialPtr | mpMaterial
| Cached pointer to material.
SubMesh * | mSubMesh
bool | mVisible
| Is this SubEntity visible?
unsigned short | mMaterialLodIndex
| The LOD number of the material to use, calculated by Entity::_notifyCurrentCamera.
VertexData * | mSkelAnimVertexData
| blend buffer details for dedicated geometry
TempBlendedBufferInfo | mTempSkelAnimInfo
| Quick lookup of buffers.
TempBlendedBufferInfo | mTempVertexAnimInfo
| Temp buffer details for software Vertex anim geometry.
VertexData * | mSoftwareVertexAnimVertexData
| Vertex data details for software Vertex anim of shared geometry.
VertexData * | mHardwareVertexAnimVertexData

Vertex data details for hardware Vertex anim of shared geometry

- separate since we need to s/w anim for shadows whilst still altering the vertex data for hardware morphing (pos2 binding).

bool | mVertexAnimationAppliedThisFrame
| Have we applied any vertex animation to geometry?
ushort | mHardwarePoseCount
| Number of hardware blended poses supported by material.
Real | mCachedCameraDist
| Cached distance to last camera for getSquaredViewDepth.
const Camera * | mCachedCamera
| The camera for which the cached distance is valid.
CustomParameterMap | mCustomParameters
bool | mPolygonModeOverrideable
bool | mUseIdentityProjection
bool | mUseIdentityView

## Static Protected Attributes

static const PlaneList | msDummyPlaneList

## Friends

class | Entity
class | SceneManager

## Detailed Description

Utility class which defines the sub-parts of an Entity.

Remarks:
  Just as meshes are split into submeshes, an Entity is made up of potentially multiple SubMeshes. These are mainly here to provide the link between the Material which the SubEntity uses (which may be the default Material for the SubMesh or may have been changed for this object) and the SubMesh data.

  The SubEntity also allows the application some flexibility in the material properties for this section of a particular instance of this Mesh, e.g. tinting the windows on a car model.

  SubEntity instances are never created manually. They are created at the same time as their parent Entity by the SceneManager method createEntity.

Definition at line 56 of file OgreSubEntity.h.

## Member Typedef Documentation

typedef std::map<size_t, Vector4> Ogre::Renderable::CustomParameterMap`[protected, inherited]`

Definition at line 285 of file OgreRenderable.h.

## Constructor & Destructor Documentation

Ogre::SubEntity::SubEntity | ( | Entity * | parent,
|  | SubMesh * | subMeshBasis |
| ) |  |  | `[protected]`

Private constructor - don't allow creation by anybody else.

virtual Ogre::SubEntity::~SubEntity | ( |  | ) | `[protected, virtual]`

Private destructor.

## Member Function Documentation

void Ogre::SubEntity::prepareTempBlendBuffers | ( | void |  | ) | `[protected]`

Internal method for preparing this Entity for use in animation.

const String& Ogre::SubEntity::getMaterialName | ( |  | ) | const

Gets the name of the Material in use by this instance.

void Ogre::SubEntity::setMaterialName | ( | const String & | name | ) |

Sets the name of the Material to be used.

Remarks:
  By default a SubEntity uses the default Material that the SubMesh uses. This call can alter that so that the Material is different for this instance.

virtual void Ogre::SubEntity::setVisible | ( | bool | visible | ) | `[virtual]`

Tells this SubEntity whether to be visible or not.

virtual bool Ogre::SubEntity::isVisible | ( | void |  | ) | const`[virtual]`

Returns whether or not this SubEntity is supposed to be visible.

SubMesh* Ogre::SubEntity::getSubMesh | ( | void |  | ) |

Accessor method to read mesh data.

Entity* Ogre::SubEntity::getParent | ( | void |  | ) | const

Accessor to get parent Entity.

Definition at line 136 of file OgreSubEntity.h.

const MaterialPtr& Ogre::SubEntity::getMaterial | ( | void |  | ) | const`[virtual]`

Overridden - see Renderable.

Implements Ogre::Renderable.

Technique* Ogre::SubEntity::getTechnique | ( | void |  | ) | const`[virtual]`

Overridden - see Renderable.

Reimplemented from Ogre::Renderable.

void Ogre::SubEntity::getRenderOperation | ( | RenderOperation & | op | ) | `[virtual]`

Overridden - see Renderable.

Implements Ogre::Renderable.

void Ogre::SubEntity::getWorldTransforms | ( | Matrix4 * | xform | ) | const`[virtual]`

Overridden - see Renderable.

Implements Ogre::Renderable.

const Quaternion& Ogre::SubEntity::getWorldOrientation | ( | void |  | ) | const`[virtual]`

Gets the worldspace orientation of this renderable; this is used in order to more efficiently update parameters to vertex & fragment programs, since inverting Quaterion and Vector in order to derive object-space positions / directions for cameras and lights is much more efficient than inverting a complete 4x4 matrix, and also eliminates problems introduced by scaling.

Implements Ogre::Renderable.

const Vector3& Ogre::SubEntity::getWorldPosition | ( | void |  | ) | const`[virtual]`

Gets the worldspace position of this renderable; this is used in order to more efficiently update parameters to vertex & fragment programs, since inverting Quaterion and Vector in order to derive object-space positions / directions for cameras and lights is much more efficient than inverting a complete 4x4 matrix, and also eliminates problems introduced by scaling.

Implements Ogre::Renderable.

bool Ogre::SubEntity::getNormaliseNormals | ( | void |  | ) | const`[virtual]`

Overridden - see Renderable.

Reimplemented from Ogre::Renderable.

unsigned short Ogre::SubEntity::getNumWorldTransforms | ( | void |  | ) | const`[virtual]`

Overridden - see Renderable.

Reimplemented from Ogre::Renderable.

Real Ogre::SubEntity::getSquaredViewDepth | ( | const Camera * | cam | ) | const`[virtual]`

Overridden, see Renderable.

Implements Ogre::Renderable.

const LightList& Ogre::SubEntity::getLights | ( | void |  | ) | const`[virtual]`

Gets a list of lights, ordered relative to how close they are to this renderable.

Remarks:
  Directional lights, which have no position, will always be first on this list.

Implements Ogre::Renderable.

bool Ogre::SubEntity::getCastsShadows | ( | void |  | ) | const`[virtual]`

Method which reports whether this renderable would normally cast a shadow.

Remarks:
  Subclasses should override this if they could have been used to generate a shadow.

Reimplemented from Ogre::Renderable.

VertexData* Ogre::SubEntity::_getSkelAnimVertexData | ( | void |  | ) |

Advanced method to get the temporarily blended vertex information for entities which are software skinned.

Remarks:
  Internal engine will eliminate software animation if possible, this information is unreliable unless added request for software animation via Entity::addSoftwareAnimationRequest.

Note:
  The positions/normals of the returned vertex data is in object space.

VertexData* Ogre::SubEntity::_getSoftwareVertexAnimVertexData | ( | void |  | ) |

Advanced method to get the temporarily blended software morph vertex information.

Remarks:
  Internal engine will eliminate software animation if possible, this information is unreliable unless added request for software animation via Entity::addSoftwareAnimationRequest.

Note:
  The positions/normals of the returned vertex data is in object space.

VertexData* Ogre::SubEntity::_getHardwareVertexAnimVertexData | ( | void |  | ) |

Advanced method to get the hardware morph vertex information.

Note:
  The positions/normals of the returned vertex data is in object space.

TempBlendedBufferInfo* Ogre::SubEntity::_getSkelAnimTempBufferInfo | ( | void |  | ) |

Advanced method to get the temp buffer information for software skeletal animation.

TempBlendedBufferInfo* Ogre::SubEntity::_getVertexAnimTempBufferInfo | ( | void |  | ) |

Advanced method to get the temp buffer information for software morph animation.

VertexData* Ogre::SubEntity::getVertexDataForBinding | ( | void |  | ) |

Retrieve the VertexData which should be used for GPU binding.

void Ogre::SubEntity::_markBuffersUnusedForAnimation | ( | void |  | ) |

Mark all vertex data as so far unanimated.

void Ogre::SubEntity::_markBuffersUsedForAnimation | ( | void |  | ) |

Mark all vertex data as animated.

bool Ogre::SubEntity::_getBuffersMarkedForAnimation | ( | void |  | ) | const

Are buffers already marked as vertex animated?

Definition at line 211 of file OgreSubEntity.h.

void Ogre::SubEntity::_restoreBuffersForUnusedAnimation | ( | bool | hardwareAnimation | ) |

Internal method to copy original vertex data to the morph structures should there be no active animation in use.

void Ogre::SubEntity::_updateCustomGpuParameter | ( | const GpuProgramParameters::AutoConstantEntry & | constantEntry,
|  | GpuProgramParameters * | params |
| ) |  |  | const`[virtual]`

Overridden from Renderble to provide some custom behaviour.

Reimplemented from Ogre::Renderable.

void Ogre::SubEntity::_invalidateCameraCache | ( |  | ) |

Invalidate the camera distance cache.

Definition at line 223 of file OgreSubEntity.h.

void Ogre::Renderable::setUseIdentityProjection | ( | bool | useIdentityProjection | ) | `[inherited]`

Sets whether or not to use an 'identity' projection.

Remarks:
  Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also:
  Renderable::getUseIdentityProjection

Definition at line 122 of file OgreRenderable.h.

bool Ogre::Renderable::getUseIdentityProjection | ( | void |  | ) | const`[inherited]`

Returns whether or not to use an 'identity' projection.

Remarks:
  Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this.

See also:
  Renderable::setUseIdentityProjection

Definition at line 136 of file OgreRenderable.h.

void Ogre::Renderable::setUseIdentityView | ( | bool | useIdentityView | ) | `[inherited]`

Sets whether or not to use an 'identity' view.

Remarks:
  Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also:
  Renderable::getUseIdentityView

Definition at line 147 of file OgreRenderable.h.

bool Ogre::Renderable::getUseIdentityView | ( | void |  | ) | const`[inherited]`

Returns whether or not to use an 'identity' view.

Remarks:
  Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this.

See also:
  Renderable::setUseIdentityView

Definition at line 161 of file OgreRenderable.h.

virtual const PlaneList& Ogre::Renderable::getClipPlanes | ( |  | ) | const`[virtual, inherited]`

Definition at line 179 of file OgreRenderable.h.

void Ogre::Renderable::setCustomParameter | ( | size_t | index,
|  | const Vector4 & | value |
| ) |  |  | `[inherited]`

Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.

Remarks:
  Calling this method simply associates a numeric index with a 4-dimensional value for this specific Renderable. This is most useful if the material which this Renderable uses a vertex or fragment program, and has an ACT_CUSTOM parameter entry. This parameter entry can refer to the index you specify as part of this call, thereby mapping a custom parameter for this renderable to a program parameter.

Parameters:

  | index | The index with which to associate the value. Note that this does not have to start at 0, and can include gaps. It also has no direct correlation with a GPU program parameter index - the mapping between the two is performed by the ACT_CUSTOM entry, if that is used.
  | value | The value to associate.

Definition at line 204 of file OgreRenderable.h.

const Vector4& Ogre::Renderable::getCustomParameter | ( | size_t | index | ) | const`[inherited]`

Gets the custom value associated with this Renderable at the given index.

Parameters:

  | @see | setCustomParaemter for full details.

Definition at line 213 of file OgreRenderable.h.

References Ogre::Exception::ERR_ITEM_NOT_FOUND, and OGRE_EXCEPT.

virtual void Ogre::Renderable::setPolygonModeOverrideable | ( | bool | override | ) | `[virtual, inherited]`

Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Parameters:

  | override | true means that a lower camera detail will override this renderables detail level, false means it won't.

Definition at line 269 of file OgreRenderable.h.

virtual bool Ogre::Renderable::getPolygonModeOverrideable | ( | void |  | ) | const`[virtual, inherited]`

Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Reimplemented in Ogre::BorderRenderable.

Definition at line 277 of file OgreRenderable.h.

## Friends And Related Function Documentation

friend class Entity`[friend]`

Definition at line 59 of file OgreSubEntity.h.

friend class SceneManager`[friend]`

Definition at line 60 of file OgreSubEntity.h.

## Member Data Documentation

Entity* Ogre::SubEntity::mParentEntity`[protected]`

Pointer to parent.

Definition at line 71 of file OgreSubEntity.h.

String Ogre::SubEntity::mMaterialName`[protected]`

Name of Material in use by this SubEntity.

Definition at line 74 of file OgreSubEntity.h.

MaterialPtr Ogre::SubEntity::mpMaterial`[protected]`

Cached pointer to material.

Definition at line 77 of file OgreSubEntity.h.

SubMesh* Ogre::SubEntity::mSubMesh`[protected]`

Definition at line 80 of file OgreSubEntity.h.

bool Ogre::SubEntity::mVisible`[protected]`

Is this SubEntity visible?

Definition at line 83 of file OgreSubEntity.h.

unsigned short Ogre::SubEntity::mMaterialLodIndex`[protected]`

The LOD number of the material to use, calculated by Entity::_notifyCurrentCamera.

Definition at line 86 of file OgreSubEntity.h.

VertexData* Ogre::SubEntity::mSkelAnimVertexData`[protected]`

blend buffer details for dedicated geometry

Definition at line 89 of file OgreSubEntity.h.

TempBlendedBufferInfo Ogre::SubEntity::mTempSkelAnimInfo`[protected]`

Quick lookup of buffers.

Definition at line 91 of file OgreSubEntity.h.

TempBlendedBufferInfo Ogre::SubEntity::mTempVertexAnimInfo`[protected]`

Temp buffer details for software Vertex anim geometry.

Definition at line 93 of file OgreSubEntity.h.

VertexData* Ogre::SubEntity::mSoftwareVertexAnimVertexData`[protected]`

Vertex data details for software Vertex anim of shared geometry.

Definition at line 95 of file OgreSubEntity.h.

VertexData* Ogre::SubEntity::mHardwareVertexAnimVertexData`[protected]`

Vertex data details for hardware Vertex anim of shared geometry

- separate since we need to s/w anim for shadows whilst still altering the vertex data for hardware morphing (pos2 binding).

Definition at line 99 of file OgreSubEntity.h.

bool Ogre::SubEntity::mVertexAnimationAppliedThisFrame`[protected]`

Have we applied any vertex animation to geometry?

Definition at line 101 of file OgreSubEntity.h.

ushort Ogre::SubEntity::mHardwarePoseCount`[protected]`

Number of hardware blended poses supported by material.

Definition at line 103 of file OgreSubEntity.h.

Real Ogre::SubEntity::mCachedCameraDist`[mutable, protected]`

Cached distance to last camera for getSquaredViewDepth.

Definition at line 105 of file OgreSubEntity.h.

const Camera* Ogre::SubEntity::mCachedCamera`[mutable, protected]`

The camera for which the cached distance is valid.

Definition at line 107 of file OgreSubEntity.h.

const PlaneList Ogre::Renderable::msDummyPlaneList`[static, protected, inherited]`

Definition at line 284 of file OgreRenderable.h.

CustomParameterMap Ogre::Renderable::mCustomParameters`[protected, inherited]`

Definition at line 286 of file OgreRenderable.h.

bool Ogre::Renderable::mPolygonModeOverrideable`[protected, inherited]`

Definition at line 287 of file OgreRenderable.h.

bool Ogre::Renderable::mUseIdentityProjection`[protected, inherited]`

Definition at line 288 of file OgreRenderable.h.

bool Ogre::Renderable::mUseIdentityView`[protected, inherited]`

Definition at line 289 of file OgreRenderable.h.

The documentation for this class was generated from the following file:

- OgreSubEntity.h

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sat May 10 16:30:31 2008