irrlicht/include/IVertexBuffer.h

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// Copyright (C) 2008-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef IRR_I_VERTEX_BUFFER_H_INCLUDED
#define IRR_I_VERTEX_BUFFER_H_INCLUDED
#include "IReferenceCounted.h"
#include "irrArray.h"
#include "EHardwareBufferFlags.h"
#include "S3DVertex.h"
namespace irr
{
namespace scene
{
class IVertexBuffer : public virtual IReferenceCounted
{
public:
//! Pointer to first element of vertex data
virtual void* getData() =0;
//! Const pointer to first element
virtual const void* getData() const =0;
//! Same as getData.
virtual void* pointer() { return getData(); }
virtual video::E_VERTEX_TYPE getType() const =0;
virtual void setType(video::E_VERTEX_TYPE vertexType) =0;
//! Number of bytes per element
virtual u32 stride() const =0;
//! Number of elements
virtual u32 size() const =0;
//! Add vertex to end.
//* Note that if you pass another type than the currently used vertex type then information can be lost */
virtual void push_back(const video::S3DVertex &element) =0;
virtual void push_back(const video::S3DVertex2TCoords &element) =0;
virtual void push_back(const video::S3DVertexTangents &element) =0;
//! Set value at index. Buffer must be already large enough that element exists.
//* Note that if you pass another type than the currently used vertex type then information can be lost */
virtual void setValue(u32 index, const video::S3DVertex &value) =0;
virtual void setValue(u32 index, const video::S3DVertex2TCoords &value) =0;
virtual void setValue(u32 index, const video::S3DVertexTangents &value) =0;
//! Direct access to elements. Risky to use!
/** The reference _must_ be cast to the correct type before use. It's only video::S3DVertex if getType is EVT_STANDARD.
otherwise cast it first to a reference type derived from S3DVertex like S3DVertex2TCoords& or S3DVertexTangents&. */
virtual video::S3DVertex& operator [](u32 index) = 0;
virtual video::S3DVertex& operator [](const u32 index) const =0;
virtual video::S3DVertex& getLast() =0;
virtual void set_used(u32 usedNow) =0;
virtual void reallocate(u32 new_size, bool canShrink=true) =0;
virtual u32 allocated_size() const =0;
//! get the current hardware mapping hint
virtual E_HARDWARE_MAPPING getHardwareMappingHint() const =0;
//! set the hardware mapping hint, for driver
virtual void setHardwareMappingHint( E_HARDWARE_MAPPING NewMappingHint ) =0;
//! flags the meshbuffer as changed, reloads hardware buffers
virtual void setDirty() =0;
//! Get the currently used ID for identification of changes.
/** This shouldn't be used for anything outside the VideoDriver. */
virtual u32 getChangedID() const = 0;
};
} // end namespace scene
} // end namespace irr
#endif