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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __S_SHARED_MESH_BUFFER_H_INCLUDED__
#define __S_SHARED_MESH_BUFFER_H_INCLUDED__
#include "irrArray.h"
#include "IMeshBuffer.h"
namespace irr
{
namespace scene
{
//! Implementation of the IMeshBuffer interface with shared vertex list
struct SSharedMeshBuffer : public IMeshBuffer
{
//! constructor
SSharedMeshBuffer() : IMeshBuffer(), Vertices(0), ChangedID_Vertex(1), ChangedID_Index(1), MappingHintVertex(EHM_NEVER), MappingHintIndex(EHM_NEVER)
{
#ifdef _DEBUG
setDebugName("SSharedMeshBuffer");
#endif
}
//! constructor
SSharedMeshBuffer(core::array<video::S3DVertex> *vertices) : IMeshBuffer(), Vertices(vertices)
{
#ifdef _DEBUG
setDebugName("SSharedMeshBuffer");
#endif
}
//! returns the material of this meshbuffer
virtual const video::SMaterial& getMaterial() const
{
return Material;
}
//! returns the material of this meshbuffer
virtual video::SMaterial& getMaterial()
{
return Material;
}
//! returns pointer to vertices
virtual const void* getVertices() const
{
if (Vertices)
return Vertices->const_pointer();
else
return 0;
}
//! returns pointer to vertices
virtual void* getVertices()
{
if (Vertices)
return Vertices->pointer();
else
return 0;
}
//! returns amount of vertices
virtual u32 getVertexCount() const
{
if (Vertices)
return Vertices->size();
else
return 0;
}
//! returns pointer to Indices
virtual const u16* getIndices() const
{
return Indices.const_pointer();
}
//! returns pointer to Indices
virtual u16* getIndices()
{
return Indices.pointer();
}
//! returns amount of indices
virtual u32 getIndexCount() const
{
return Indices.size();
}
//! Get type of index data which is stored in this meshbuffer.
virtual video::E_INDEX_TYPE getIndexType() const
{
return video::EIT_16BIT;
}
//! returns an axis aligned bounding box
virtual const core::aabbox3d<f32>& getBoundingBox() const
{
return BoundingBox;
}
//! set user axis aligned bounding box
virtual void setBoundingBox( const core::aabbox3df& box)
{
BoundingBox = box;
}
//! returns which type of vertex data is stored.
virtual video::E_VERTEX_TYPE getVertexType() const
{
return video::EVT_STANDARD;
}
//! recalculates the bounding box. should be called if the mesh changed.
virtual void recalculateBoundingBox()
{
if (!Vertices || Vertices->empty() || Indices.empty())
BoundingBox.reset(0,0,0);
else
{
BoundingBox.reset((*Vertices)[Indices[0]].Pos);
for (u32 i=1; i<Indices.size(); ++i)
BoundingBox.addInternalPoint((*Vertices)[Indices[i]].Pos);
}
}
//! returns position of vertex i
virtual const core::vector3df& getPosition(u32 i) const
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].Pos;
}
//! returns position of vertex i
virtual core::vector3df& getPosition(u32 i)
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].Pos;
}
//! returns normal of vertex i
virtual const core::vector3df& getNormal(u32 i) const
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].Normal;
}
//! returns normal of vertex i
virtual core::vector3df& getNormal(u32 i)
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].Normal;
}
//! returns texture coord of vertex i
virtual const core::vector2df& getTCoords(u32 i) const
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].TCoords;
}
//! returns texture coord of vertex i
virtual core::vector2df& getTCoords(u32 i)
{
_IRR_DEBUG_BREAK_IF(!Vertices);
return (*Vertices)[Indices[i]].TCoords;
}
//! append the vertices and indices to the current buffer
virtual void append(const void* const vertices, u32 numVertices, const u16* const indices, u32 numIndices) {}
//! append the meshbuffer to the current buffer
virtual void append(const IMeshBuffer* const other) {}
//! get the current hardware mapping hint
virtual E_HARDWARE_MAPPING getHardwareMappingHint_Vertex() const
{
return MappingHintVertex;
}
//! get the current hardware mapping hint
virtual E_HARDWARE_MAPPING getHardwareMappingHint_Index() const
{
return MappingHintIndex;
}
//! set the hardware mapping hint, for driver
virtual void setHardwareMappingHint( E_HARDWARE_MAPPING NewMappingHint, E_BUFFER_TYPE buffer=EBT_VERTEX_AND_INDEX )
{
if (buffer==EBT_VERTEX_AND_INDEX || buffer==EBT_VERTEX)
MappingHintVertex=NewMappingHint;
if (buffer==EBT_VERTEX_AND_INDEX || buffer==EBT_INDEX)
MappingHintIndex=NewMappingHint;
}
//! flags the mesh as changed, reloads hardware buffers
virtual void setDirty(E_BUFFER_TYPE buffer=EBT_VERTEX_AND_INDEX)
{
if (buffer==EBT_VERTEX_AND_INDEX || buffer==EBT_VERTEX)
++ChangedID_Vertex;
if (buffer==EBT_VERTEX_AND_INDEX || buffer==EBT_INDEX)
++ChangedID_Index;
}
//! Get the currently used ID for identification of changes.
/** This shouldn't be used for anything outside the VideoDriver. */
virtual u32 getChangedID_Vertex() const {return ChangedID_Vertex;}
//! Get the currently used ID for identification of changes.
/** This shouldn't be used for anything outside the VideoDriver. */
virtual u32 getChangedID_Index() const {return ChangedID_Index;}
//! Material of this meshBuffer
video::SMaterial Material;
//! Shared Array of vertices
core::array<video::S3DVertex> *Vertices;
//! Array of Indices
core::array<u16> Indices;
//! ID used for hardware buffer management
u32 ChangedID_Vertex;
//! ID used for hardware buffer management
u32 ChangedID_Index;
//! Bounding box
core::aabbox3df BoundingBox;
//! hardware mapping hint
E_HARDWARE_MAPPING MappingHintVertex;
E_HARDWARE_MAPPING MappingHintIndex;
};
} // end namespace scene
} // end namespace irr
#endif
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