Struct for holding a mesh with a single material. More...

#include <IMeshBuffer.h>

Inheritance diagram for irr::scene::IMeshBuffer:

Public Member Functions
virtual video::SMaterial &	getMaterial ()=0
	Get the material of this meshbuffer. More...

virtual const video::SMaterial &	getMaterial () const =0
	Get the material of this meshbuffer. More...

virtual video::E_VERTEX_TYPE	getVertexType () const =0
	Get type of vertex data which is stored in this meshbuffer. More...

virtual const void *	getVertices () const =0
	Get access to vertex data. The data is an array of vertices. More...

virtual void *	getVertices ()=0
	Get access to vertex data. The data is an array of vertices. More...

virtual u32	getVertexCount () const =0
	Get amount of vertices in meshbuffer. More...

virtual video::E_INDEX_TYPE	getIndexType () const =0
	Get type of index data which is stored in this meshbuffer. More...

virtual const u16 *	getIndices () const =0
	Get access to indices. More...

virtual u16 *	getIndices ()=0
	Get access to indices. More...

virtual u32	getIndexCount () const =0
	Get amount of indices in this meshbuffer. More...

virtual const core::aabbox3df &	getBoundingBox () const =0
	Get the axis aligned bounding box of this meshbuffer. More...

virtual void	setBoundingBox (const core::aabbox3df &box)=0
	Set axis aligned bounding box. More...

virtual void	recalculateBoundingBox ()=0
	Recalculates the bounding box. Should be called if the mesh changed. More...

virtual const core::vector3df &	getPosition (u32 i) const =0
	returns position of vertex i More...

virtual core::vector3df &	getPosition (u32 i)=0
	returns position of vertex i More...

virtual const core::vector3df &	getNormal (u32 i) const =0
	returns normal of vertex i More...

virtual core::vector3df &	getNormal (u32 i)=0
	returns normal of vertex i More...

virtual const core::vector2df &	getTCoords (u32 i) const =0
	returns texture coord of vertex i More...

virtual core::vector2df &	getTCoords (u32 i)=0
	returns texture coord of vertex i More...

virtual void	append (const void const vertices, u32 numVertices, const u16 const indices, u32 numIndices)=0
	Append the vertices and indices to the current buffer. More...

virtual void	append (const IMeshBuffer *const other)=0
	Append the meshbuffer to the current buffer. More...

virtual E_HARDWARE_MAPPING	getHardwareMappingHint_Vertex () const =0
	get the current hardware mapping hint More...

virtual E_HARDWARE_MAPPING	getHardwareMappingHint_Index () const =0
	get the current hardware mapping hint More...

virtual void	setHardwareMappingHint (E_HARDWARE_MAPPING newMappingHint, E_BUFFER_TYPE buffer=EBT_VERTEX_AND_INDEX)=0
	set the hardware mapping hint, for driver More...

virtual void	setDirty (E_BUFFER_TYPE buffer=EBT_VERTEX_AND_INDEX)=0
	flags the meshbuffer as changed, reloads hardware buffers More...

virtual u32	getChangedID_Vertex () const =0
	Get the currently used ID for identification of changes. More...

virtual u32	getChangedID_Index () const =0
	Get the currently used ID for identification of changes. More...

virtual void	setPrimitiveType (E_PRIMITIVE_TYPE type)=0
	Describe what kind of primitive geometry is used by the meshbuffer. More...

virtual E_PRIMITIVE_TYPE	getPrimitiveType () const =0
	Get the kind of primitive geometry which is used by the meshbuffer. More...

virtual u32	getPrimitiveCount () const
	Calculate how many geometric primitives are used by this meshbuffer. More...

Public Member Functions inherited from irr::IReferenceCounted
	IReferenceCounted ()
	Constructor. More...

virtual	~IReferenceCounted ()
	Destructor. More...

void	grab () const
	Grabs the object. Increments the reference counter by one. More...

bool	drop () const
	Drops the object. Decrements the reference counter by one. More...

s32	getReferenceCount () const
	Get the reference count. More...

const c8 *	getDebugName () const
	Returns the debug name of the object. More...

Additional Inherited Members
Protected Member Functions inherited from irr::IReferenceCounted
void	setDebugName (const c8 *newName)
	Sets the debug name of the object. More...

Detailed Description

Struct for holding a mesh with a single material.

A part of an IMesh which has the same material on each face of that group. Logical groups of an IMesh need not be put into separate mesh buffers, but can be. Separately animated parts of the mesh must be put into separate mesh buffers. Some mesh buffer implementations have limitations on the number of vertices the buffer can hold. In that case, logical grouping can help. Moreover, the number of vertices should be optimized for the GPU upload, which often depends on the type of gfx card. Typical figures are 1000-10000 vertices per buffer. SMeshBuffer is a simple implementation of a MeshBuffer, which supports up to 65535 vertices.

Since meshbuffers are used for drawing, and hence will be exposed to the driver, chances are high that they are grab()'ed from somewhere. It's therefore required to dynamically allocate meshbuffers which are passed to a video driver and only drop the buffer once it's not used in the current code block anymore.

Definition at line 39 of file IMeshBuffer.h.

Member Function Documentation

◆ append() [1/2]

virtual void irr::scene::IMeshBuffer::append	(	const void *const	vertices,
		u32	numVertices,
		const u16 *const	indices,
		u32	numIndices
	)

pure virtual

Append the vertices and indices to the current buffer.

Only works for compatible vertex types.

Parameters

vertices	Pointer to a vertex array.
numVertices	Number of vertices in the array.
indices	Pointer to index array.
numIndices	Number of indices in array.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ append() [2/2]

virtual void irr::scene::IMeshBuffer::append ( const IMeshBuffer *const other )

pure virtual

Append the meshbuffer to the current buffer.

Only works for compatible vertex types

Parameters

other Buffer to append to this one.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getBoundingBox()

virtual const core::aabbox3df& irr::scene::IMeshBuffer::getBoundingBox ( ) const

pure virtual

Get the axis aligned bounding box of this meshbuffer.

Returns: Axis aligned bounding box of this buffer.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, irr::scene::CDynamicMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getChangedID_Index()

virtual u32 irr::scene::IMeshBuffer::getChangedID_Index ( ) const

pure virtual

Get the currently used ID for identification of changes.

This shouldn't be used for anything outside the VideoDriver.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getChangedID_Vertex()

virtual u32 irr::scene::IMeshBuffer::getChangedID_Vertex ( ) const

pure virtual

Get the currently used ID for identification of changes.

This shouldn't be used for anything outside the VideoDriver.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getHardwareMappingHint_Index()

virtual E_HARDWARE_MAPPING irr::scene::IMeshBuffer::getHardwareMappingHint_Index ( ) const

pure virtual

get the current hardware mapping hint

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getHardwareMappingHint_Vertex()

virtual E_HARDWARE_MAPPING irr::scene::IMeshBuffer::getHardwareMappingHint_Vertex ( ) const

pure virtual

get the current hardware mapping hint

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getIndexCount()

virtual u32 irr::scene::IMeshBuffer::getIndexCount ( ) const

pure virtual

Get amount of indices in this meshbuffer.

Returns: Number of indices in this buffer.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getIndexType()

virtual video::E_INDEX_TYPE irr::scene::IMeshBuffer::getIndexType ( ) const

pure virtual

Get type of index data which is stored in this meshbuffer.

Returns: Index type of this buffer.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::SSharedMeshBuffer, and irr::scene::CMeshBuffer< T >.

◆ getIndices() [1/2]

virtual const u16* irr::scene::IMeshBuffer::getIndices ( ) const

pure virtual

Get access to indices.

Returns: Pointer to indices array.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getIndices() [2/2]

virtual u16* irr::scene::IMeshBuffer::getIndices ( )

pure virtual

Get access to indices.

Returns: Pointer to indices array.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getMaterial() [1/2]

virtual video::SMaterial& irr::scene::IMeshBuffer::getMaterial ( )

pure virtual

Get the material of this meshbuffer.

Returns: Material of this buffer.

Implemented in irr::scene::CDynamicMeshBuffer, irr::scene::SSharedMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSkinMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getMaterial() [2/2]

virtual const video::SMaterial& irr::scene::IMeshBuffer::getMaterial ( ) const

pure virtual

Get the material of this meshbuffer.

Returns: Material of this buffer.

Implemented in irr::scene::CDynamicMeshBuffer, irr::scene::SSharedMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSkinMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getNormal() [1/2]

virtual const core::vector3df& irr::scene::IMeshBuffer::getNormal ( u32 i ) const

pure virtual

returns normal of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getNormal() [2/2]

virtual core::vector3df& irr::scene::IMeshBuffer::getNormal ( u32 i )

pure virtual

returns normal of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getPosition() [1/2]

virtual const core::vector3df& irr::scene::IMeshBuffer::getPosition ( u32 i ) const

pure virtual

returns position of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getPosition() [2/2]

virtual core::vector3df& irr::scene::IMeshBuffer::getPosition ( u32 i )

pure virtual

returns position of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getPrimitiveCount()

virtual u32 irr::scene::IMeshBuffer::getPrimitiveCount ( ) const

inlinevirtual

Calculate how many geometric primitives are used by this meshbuffer.

Definition at line 159 of file IMeshBuffer.h.

                 {
                         const u32 indexCount = getIndexCount();
                         switch (getPrimitiveType())
                         {
                 case scene::EPT_POINTS:         return indexCount;
                 case scene::EPT_LINE_STRIP:     return indexCount-1;
                 case scene::EPT_LINE_LOOP:      return indexCount;
                 case scene::EPT_LINES:          return indexCount/2;
                 case scene::EPT_TRIANGLE_STRIP: return (indexCount-2);
                 case scene::EPT_TRIANGLE_FAN:   return (indexCount-2);
                 case scene::EPT_TRIANGLES:      return indexCount/3;
                 case scene::EPT_QUAD_STRIP:     return (indexCount-2)/2;
                 case scene::EPT_QUADS:          return indexCount/4;
                 case scene::EPT_POLYGON:        return indexCount; // (not really primitives, that would be 1, works like line_strip)
                 case scene::EPT_POINT_SPRITES:  return indexCount;
                         }
                         return 0;
                 }

◆ getPrimitiveType()

virtual E_PRIMITIVE_TYPE irr::scene::IMeshBuffer::getPrimitiveType ( ) const

pure virtual

Get the kind of primitive geometry which is used by the meshbuffer.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::CDynamicMeshBuffer.

◆ getTCoords() [1/2]

virtual const core::vector2df& irr::scene::IMeshBuffer::getTCoords ( u32 i ) const

pure virtual

returns texture coord of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getTCoords() [2/2]

virtual core::vector2df& irr::scene::IMeshBuffer::getTCoords ( u32 i )

pure virtual

returns texture coord of vertex i

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::IDynamicMeshBuffer, irr::scene::CMeshBuffer< T >, and irr::scene::SSharedMeshBuffer.

◆ getVertexCount()

virtual u32 irr::scene::IMeshBuffer::getVertexCount ( ) const

pure virtual

Get amount of vertices in meshbuffer.

Returns: Number of vertices in this buffer.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::SSharedMeshBuffer, and irr::scene::CMeshBuffer< T >.

◆ getVertexType()

virtual video::E_VERTEX_TYPE irr::scene::IMeshBuffer::getVertexType ( ) const

pure virtual

Get type of vertex data which is stored in this meshbuffer.

Returns: Vertex type of this buffer.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ getVertices() [1/2]

virtual const void* irr::scene::IMeshBuffer::getVertices ( ) const

pure virtual

Get access to vertex data. The data is an array of vertices.

Which vertex type is used can be determined by getVertexType().

Returns: Pointer to array of vertices.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::SSharedMeshBuffer, and irr::scene::CMeshBuffer< T >.

◆ getVertices() [2/2]

virtual void* irr::scene::IMeshBuffer::getVertices ( )

pure virtual

Get access to vertex data. The data is an array of vertices.

Which vertex type is used can be determined by getVertexType().

Returns: Pointer to array of vertices.

Implemented in irr::scene::IDynamicMeshBuffer, irr::scene::SSkinMeshBuffer, irr::scene::SSharedMeshBuffer, and irr::scene::CMeshBuffer< T >.

◆ recalculateBoundingBox()

virtual void irr::scene::IMeshBuffer::recalculateBoundingBox ( )

pure virtual

Recalculates the bounding box. Should be called if the mesh changed.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, irr::scene::CDynamicMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ setBoundingBox()

virtual void irr::scene::IMeshBuffer::setBoundingBox ( const core::aabbox3df & box )

pure virtual

Set axis aligned bounding box.

Parameters

box	User defined axis aligned bounding box to use for this buffer.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, irr::scene::CDynamicMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ setDirty()

virtual void irr::scene::IMeshBuffer::setDirty ( E_BUFFER_TYPE buffer = EBT_VERTEX_AND_INDEX )

pure virtual

flags the meshbuffer as changed, reloads hardware buffers

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ setHardwareMappingHint()

virtual void irr::scene::IMeshBuffer::setHardwareMappingHint	(	E_HARDWARE_MAPPING	newMappingHint,
		E_BUFFER_TYPE	buffer = `EBT_VERTEX_AND_INDEX`
	)

pure virtual

set the hardware mapping hint, for driver

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::IDynamicMeshBuffer.

◆ setPrimitiveType()

virtual void irr::scene::IMeshBuffer::setPrimitiveType ( E_PRIMITIVE_TYPE type )

pure virtual

Describe what kind of primitive geometry is used by the meshbuffer.

Note: Default is EPT_TRIANGLES. Using other types is fine for rendering. But meshbuffer manipulation functions might expect type EPT_TRIANGLES to work correctly. Also mesh writers will generally fail (badly!) with other types than EPT_TRIANGLES.

Implemented in irr::scene::SSkinMeshBuffer, irr::scene::CMeshBuffer< T >, irr::scene::SSharedMeshBuffer, and irr::scene::CDynamicMeshBuffer.

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

include/irrlicht/IMeshBuffer.h

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ append() [1/2]

◆ append() [2/2]

◆ getBoundingBox()

◆ getChangedID_Index()

◆ getChangedID_Vertex()

◆ getHardwareMappingHint_Index()

◆ getHardwareMappingHint_Vertex()

◆ getIndexCount()

◆ getIndexType()

◆ getIndices() [1/2]

◆ getIndices() [2/2]

◆ getMaterial() [1/2]

◆ getMaterial() [2/2]

◆ getNormal() [1/2]

◆ getNormal() [2/2]

◆ getPosition() [1/2]

◆ getPosition() [2/2]

◆ getPrimitiveCount()

◆ getPrimitiveType()

◆ getTCoords() [1/2]

◆ getTCoords() [2/2]

◆ getVertexCount()

◆ getVertexType()

◆ getVertices() [1/2]

◆ getVertices() [2/2]

◆ recalculateBoundingBox()

◆ setBoundingBox()

◆ setDirty()

◆ setHardwareMappingHint()

◆ setPrimitiveType()