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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012-2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2014 KiCad Developers, see CHANGELOG.TXT for contributors.
*
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef CONVERT_TO_BIU_H_
#define CONVERT_TO_BIU_H_
/**
* @file convert_to_biu.h
*/
/**
* @brief some define and functions to convert a value in mils, decimils or mm
* to the internal unit used in pcbnew, cvpcb or gerbview (nanometer or deci-mil)
* depending on compile time option
*/
/// Scaling factor to convert mils to internal units.
#if defined(PCBNEW) || defined(CVPCB) || defined(GERBVIEW)
#if defined(GERBVIEW)
#define IU_PER_MM 1e5 // Gerbview IU is 10 nanometers.
#else
#define IU_PER_MM 1e6 // Pcbnew IU is 1 nanometer.
#endif
#define IU_PER_MILS (IU_PER_MM * 0.0254)
#define IU_PER_DECIMILS (IU_PER_MM * 0.00254)
/// Convert mils to PCBNEW internal units (iu).
inline int Mils2iu( int mils )
{
double x = mils * IU_PER_MILS;
return int( x < 0 ? x - 0.5 : x + 0.5 );
}
/// Convert deci-mils to PCBNEW internal units (iu).
inline int DMils2iu( int dmils )
{
double x = dmils * IU_PER_DECIMILS;
return int( x < 0 ? x - 0.5 : x + 0.5 );
}
#elif defined (PL_EDITOR)
#define IU_PER_MM 1e3 // internal units in micron (should be enough)
#define IU_PER_MILS (IU_PER_MM * 0.0254)
#define IU_PER_DECIMILS (IU_PER_MM * 0.00254)
/// Convert mils to page layout editor internal units (iu).
inline int Mils2iu( int mils )
{
double x = mils * IU_PER_MILS;
return int( x < 0 ? x - 0.5 : x + 0.5 );
}
/// Convert deci-mils to page layout editor internal units (iu).
inline int DMils2iu( int dmils )
{
double x = dmils * IU_PER_DECIMILS;
return int( x < 0 ? x - 0.5 : x + 0.5 );
}
#else // Eeschema and anything else.
#define IU_PER_DECIMILS 0.1
#define IU_PER_MILS 1.0
#define IU_PER_MM (IU_PER_MILS / 0.0254)
inline int Mils2iu( int mils )
{
return mils;
}
#endif
/// Convert mm to internal units (iu).
inline int Millimeter2iu( double mm )
{
return (int) ( mm < 0 ? mm * IU_PER_MM - 0.5 : mm * IU_PER_MM + 0.5);
}
#endif // CONVERT_TO_BIU_H_
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