/*
 * (c) Copyright Ascensio System SIA 2010-2023
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
 * street, Riga, Latvia, EU, LV-1050.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */

#include "FixedPointNumber.h"
#include "../Common/Base/FormatUtils.h"

namespace DocFileFormat
{
	FixedPointNumber::FixedPointNumber( unsigned short integral, unsigned short fractional )
	{
		this->Integral = integral;
		this->Fractional = fractional;
	}

	FixedPointNumber::FixedPointNumber( _UINT32 value )
	{
		unsigned short* bytes = (unsigned short*)(&value);

		this->Integral = bytes[0];
		this->Fractional = bytes[1];
	}

	FixedPointNumber::FixedPointNumber( const unsigned char* bytes, unsigned int size )
	{
		if ( ( bytes != NULL ) && ( size >= 4 ) )
		{
			this->Integral = FormatUtils::BytesToUInt16( bytes, 0, size );
			this->Fractional = FormatUtils::BytesToUInt16( bytes, 2, size );
		}
	}

	double FixedPointNumber::ToAngle() const
	{
		if ( this->Fractional != 0 )
		{
			// negative angle
			return ( this->Fractional - 65536.0 );
		}
		else if ( this->Integral != 0 )
		{
			//positive angle
			return ( 65536.0 - this->Integral );
		}
		else
		{
			return 0.0;
		}
	}

	double FixedPointNumber::GetValue() const
	{
		return (double)( this->Integral + ( (double)this->Fractional / 65536.0 ) );
	}
}