/******************************************************************************
	libx42pp - skinned vertex animation library (C++ API)
	Copyright (C) 2007 HermitWorks Entertainment Corporation

	This program is free software; you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the Free
	Software Foundation; either version 2 of the License, or (at your option)
	any later version.

	This program is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
	for more details.

	You should have received a copy of the GNU General Public License along
	with this program; if not, write to the
	
		Free Software Foundation, Inc.
		51 Franklin Street, Fifth Floor
		Boston, MA  02110-1301, USA.
******************************************************************************/

#include "local.h"

namespace x42
{

model::model( const x42header_t &h, persist_flags pers_flags )
{
	size_t cb = x42_GetLoadedSize( &h, pers_flags );

	if( !cb )
		throw std::exception();
							 
	buf.alloc( cb );

	_x42 = x42_SetupBufferPointers( buf.ptr(), &h, pers_flags );

	if( !_x42 )
		throw std::exception();
}

model::model( InStream &stream, persist_flags pers_flags )
{
	initialize( stream, pers_flags );
}

model::model( const char *path, persist_flags pers_flags )
{
	std::fstream file( path, std::ios_base::in | std::ios_base::binary );
	InStream stream( file );
	initialize( stream, pers_flags );
}

model::model( const model &src, persist_flags pers_flags )
{
	size_t cb = x42_GetLoadedSize( &src._x42->header, pers_flags );

	if( !cb )
		throw std::exception();

	buf.alloc( cb );

	_x42 = x42_CopyRuntimeData( buf.ptr(), src._x42 );

	if( !_x42 )
		throw std::exception();
}

model::~model()
{
}

void model::initialize( InStream &stream, persist_flags pers_flags )
{
	x42header_t hbuf, *h;
	h = x42_LoadHeaderFromStream( &hbuf, &stream );

	if( !h )
		throw std::exception();

	size_t cb = x42_GetLoadedSize( h, pers_flags );

	if( !cb )
		throw std::exception();
							 
	buf.alloc( cb );

	_x42 = x42_LoadDataFromStream( buf.ptr(), h, pers_flags, &stream );

	if( !_x42 )
		throw std::exception();
}

void model::swap( model &other )
{
	buf.swap( other.buf );
	std::swap( _x42, other._x42 );
}

model& model::operator = ( const model &src )
{
	model( src ).swap( *this );
	return *this;
}

void model::write_data( OutStream &stream, persist_flags pers_flags )
{
	bool stat;

	stat = x42_WriteToStream( &stream, pers_flags, _x42 );

	if( !stat )
		throw std::exception();
}

};