#include "GeoVertexBuffer.h"

using namespace Geometry;

//---------------------------------------------------------------------------
//	Destroyer.
//---------------------------------------------------------------------------
VertexBuffer::~VertexBuffer()
{
	delete	[] mPosition;
	delete	[] mNormal;
	delete	[] mTexCoords;
}

//---------------------------------------------------------------------------
//	Save to a serializer.
//---------------------------------------------------------------------------
void VertexBuffer::Save(Serializer &s)
{
	s.WriteArray(&mVertexInfo,	1);
	s.WriteArray(&mVertexCount,	1);
	
	if (mVertexInfo & VERTEX_POSITION)
	{
		s.WriteArray(mPosition, mVertexCount);
	}
	if (mVertexInfo & VERTEX_NORMAL)
	{
		s.WriteArray(mNormal, mVertexCount);
	}
	if (mVertexInfo & VERTEX_TEXCOORDS)
	{
		s.WriteArray(mTexCoords, mVertexCount);
	}
}

//---------------------------------------------------------------------------
//	Loads from a serializer.
//---------------------------------------------------------------------------
void VertexBuffer::Load(Serializer &s)
{
	//	Clear data.
	delete	[]	mPosition;
	
	mPosition = 0;
	
	delete	[]	mNormal;
	
	mNormal	=	0;
	
	delete	[]	mTexCoords;
	
	mTexCoords	=	0;

	s.ReadArray(&mVertexInfo,1);
	s.ReadArray(&mVertexCount,1);
	
	if (mVertexInfo & VERTEX_POSITION)
	{
		mPosition	=	new Vector3[mVertexCount];
		
		s.ReadArray(mPosition, mVertexCount);
	}
	
	if (mVertexInfo & VERTEX_NORMAL)
	{
		mNormal	=	new Vector3[mVertexCount];
		
		s.ReadArray(mNormal, mVertexCount);
	}
	
	if (mVertexInfo & VERTEX_TEXCOORDS)
	{
		mTexCoords	=	new Vector2[mVertexCount];
		
		s.ReadArray(mTexCoords, mVertexCount);
	}
}

//---------------------------------------------------------------------------
//	Copy contents of vertex buffer to another.
//---------------------------------------------------------------------------
VertexBuffer *VertexBuffer::Clone() const
{
	VertexBuffer *vnew	=	new VertexBuffer();
	vnew->mVertexInfo		=	mVertexInfo;
	vnew->mVertexCount	=	mVertexCount;
	vnew->mPosition			=	new Vector3[mVertexCount];
	vnew->mNormal				=	new Vector3[mVertexCount];
	vnew->mTexCoords		=	new Vector2[mVertexCount];

	memcpy(vnew->mPosition, mPosition, mVertexCount*sizeof(Vector3));
	memcpy(vnew->mNormal, mNormal, mVertexCount*sizeof(Vector3));
	memcpy(vnew->mTexCoords, mTexCoords, mVertexCount*sizeof(Vector2));
	
	return	vnew;
}