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98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2019
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#pragma once
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namespace DocFileFormat
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{
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/// Specifies an approximation of a real number, where the approximation has a fixed number of digits after the radix point.
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///
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/// This type is specified in [MS-OSHARED] section 2.2.1.6.
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///
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/// Value of the real number = Integral + ( Fractional / 65536.0 )
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///
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/// Integral (2 bytes): A signed integer that specifies the integral part of the real number.
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/// Fractional (2 bytes): An unsigned integer that specifies the fractional part of the real number.
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class FixedPointNumber
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{
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public:
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unsigned short Integral;
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unsigned short Fractional;
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FixedPointNumber( unsigned short integral = 0, unsigned short fractional = 0 )
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{
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this->Integral = integral;
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this->Fractional = fractional;
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}
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FixedPointNumber( unsigned int value )
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{
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unsigned char* bytes = FormatUtils::GetBytes( value );
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this->Integral = FormatUtils::BytesToUInt16( bytes, 0, sizeof(value) );
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this->Fractional = FormatUtils::BytesToUInt16( bytes, 2, sizeof(value) );
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RELEASEARRAYOBJECTS( bytes );
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}
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FixedPointNumber( const unsigned char* bytes, unsigned int size )
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{
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if ( ( bytes != NULL ) && ( size >= 4 ) )
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{
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this->Integral = FormatUtils::BytesToUInt16( bytes, 0, size );
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this->Fractional = FormatUtils::BytesToUInt16( bytes, 2, size );
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}
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}
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double ToAngle() const
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{
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if ( this->Fractional != 0 )
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{
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// negative angle
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return ( this->Fractional - 65536.0 );
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}
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else if ( this->Integral != 0 )
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{
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//positive angle
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return ( 65536.0 - this->Integral );
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}
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else
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{
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return 0.0;
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}
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}
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double GetValue() const
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{
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return (double)( this->Integral + ( (double)this->Fractional / 65536.0 ) );
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}
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};
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} |