eda_units.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 1992-2022 KiCad Developers, see AUTHORS.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
 */
 
#include <eda_units.h>
#include <fmt/core.h>
#include <math/util.h> // for KiROUND
#include <macros.h>
 
bool EDA_UNIT_UTILS::IsImperialUnit( EDA_UNITS aUnit )
{
 switch( aUnit )
 {
 case EDA_UNITS::INCHES:
 case EDA_UNITS::MILS:
 return true;
 
 default:
 return false;
 }
}
 
 
bool EDA_UNIT_UTILS::IsMetricUnit( EDA_UNITS aUnit )
{
 switch( aUnit )
 {
 case EDA_UNITS::MILLIMETRES:
  return true;
 
 default:
 return false;
 }
}
 
 
int EDA_UNIT_UTILS::Mm2mils( double aVal )
{
 return KiROUND( aVal * 1000. / 25.4 );
}
 
 
int EDA_UNIT_UTILS::Mils2mm( double aVal )
{
 return KiROUND( aVal * 25.4 / 1000. );
}
 
 
bool EDA_UNIT_UTILS::FetchUnitsFromString( const wxString& aTextValue, EDA_UNITS& aUnits )
{
 wxString buf( aTextValue.Strip( wxString::both ) );
 unsigned brk_point = 0;
 
 while( brk_point < buf.Len() )
 {
 wxChar c = buf[brk_point];
 
 if( !( ( c >= '0' && c <= '9' ) || ( c == '.' ) || ( c == ',' ) || ( c == '-' )
 || ( c == '+' ) ) )
 break;
 
 ++brk_point;
 }
 
 // Check the unit designator (2 ch significant)
 wxString unit( buf.Mid( brk_point ).Strip( wxString::leading ).Left( 2 ).Lower() );
 
 if( unit == wxT( "mm" ) )
 aUnits = EDA_UNITS::MILLIMETRES;
 else if( unit == wxT( "mi" ) || unit == wxT( "th" ) ) // "mils" or "thou"
 aUnits = EDA_UNITS::MILS;
 else if( unit == wxT( "in" ) || unit == wxT( "\"" ) )
 aUnits = EDA_UNITS::INCHES;
 else if( unit == wxT( "de" ) || unit == wxT( "ra" ) ) // "deg" or "rad"
 aUnits = EDA_UNITS::DEGREES;
 else
 return false;
 return true;
}
 
 
wxString EDA_UNIT_UTILS::GetText( EDA_UNITS aUnits, EDA_DATA_TYPE aType )
{
 wxString label;
 
 switch( aUnits )
 {
 case EDA_UNITS::MILLIMETRES: label = wxT( " mm" ); break;
 case EDA_UNITS::DEGREES: label = wxT( "°" ); break;
 case EDA_UNITS::MILS: label = wxT( " mils" ); break;
 case EDA_UNITS::INCHES: label = wxT( " in" ); break;
 case EDA_UNITS::PERCENT: label = wxT( "%" ); break;
 case EDA_UNITS::UNSCALED:  break;
 default: UNIMPLEMENTED_FOR( wxS( "Unknown units" ) ); break;
 }
 
 switch( aType )
 {
 case EDA_DATA_TYPE::VOLUME: label += wxT( "³" ); break;
 case EDA_DATA_TYPE::AREA: label += wxT( "²" ); break;
 case EDA_DATA_TYPE::DISTANCE: break;
 default: UNIMPLEMENTED_FOR( wxS( "Unknown measurement" ) ); break;
 }
 
 return label;
}
 
 
wxString EDA_UNIT_UTILS::GetLabel( EDA_UNITS aUnits, EDA_DATA_TYPE aType )
{
 return GetText( aUnits, aType ).Trim( false );
}
 
 
std::string EDA_UNIT_UTILS::FormatAngle( const EDA_ANGLE& aAngle )
{
 std::string temp = fmt::format( "{:.10g}", aAngle.AsDegrees() );
 
 return temp;
}
 
 
std::string EDA_UNIT_UTILS::FormatInternalUnits( const EDA_IU_SCALE& aIuScale, int aValue )
{
 std::string buf;
 double engUnits = aValue;
 
 engUnits /= aIuScale.IU_PER_MM;
 
 if( engUnits != 0.0 && fabs( engUnits ) <= 0.0001 )
 {
 buf = fmt::format( "{:.10f}", engUnits );
 
 // remove trailing zeros
 while( !buf.empty() && buf[buf.size() - 1] == '0' )
 {
 buf.pop_back();
 }
 
 // if the value was really small
 // we may have just stripped all the zeros after the decimal
 if( buf[buf.size() - 1] == '.' )
 {
 buf.pop_back();
 }
 }
 else
 {
 buf = fmt::format( "{:.10g}", engUnits );
 }
 
 return buf;
}
 
 
std::string EDA_UNIT_UTILS::FormatInternalUnits( const EDA_IU_SCALE& aIuScale,
 const VECTOR2I& aPoint )
{
 return FormatInternalUnits( aIuScale, aPoint.x ) + " "
 + FormatInternalUnits( aIuScale, aPoint.y );
}
 
 
#define IU_TO_MM( x, scale ) ( x / scale.IU_PER_MM )
#define IU_TO_IN( x, scale ) ( x / scale.IU_PER_MILS / 1000 )
#define IU_TO_MILS( x, scale ) ( x / scale.IU_PER_MILS )
#define MM_TO_IU( x, scale ) ( x * scale.IU_PER_MM )
#define IN_TO_IU( x, scale ) ( x * scale.IU_PER_MILS * 1000 )
#define MILS_TO_IU( x, scale ) ( x * scale.IU_PER_MILS )
 
double EDA_UNIT_UTILS::UI::ToUserUnit( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnit,
 double aValue )
{
 switch( aUnit )
 {
 case EDA_UNITS::MILLIMETRES:
 return IU_TO_MM( aValue, aIuScale );
 
 case EDA_UNITS::MILS:
 return IU_TO_MILS( aValue, aIuScale );
 
 case EDA_UNITS::INCHES:
 return IU_TO_IN( aValue, aIuScale );
 
 case EDA_UNITS::DEGREES:
 return aValue;
 
 default:
 return aValue;
 }
}
 
 
wxString EDA_UNIT_UTILS::UI::StringFromValue( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 double aValue, bool aAddUnitsText,
 EDA_DATA_TYPE aType )
{
 double value_to_print = aValue;
 
 switch( aType )
 {
 case EDA_DATA_TYPE::VOLUME:
 value_to_print = ToUserUnit( aIuScale, aUnits, value_to_print );
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::AREA:
 value_to_print = ToUserUnit( aIuScale, aUnits, value_to_print );
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::DISTANCE:
 value_to_print = ToUserUnit( aIuScale, aUnits, value_to_print );
 }
 
 char buf[50];
 
 if( value_to_print != 0.0 && fabs( value_to_print ) <= 0.0001 )
 {
 int len = snprintf( buf, sizeof( buf ) - 1, "%.10f", value_to_print );
 
 while( --len > 0 && buf[len] == '0' )
 buf[len] = '\0';
 
 if( len >= 0 && ( buf[len] == '.' || buf[len] == ',' ) )
 buf[len] = '\0';
 }
 else
 {
 snprintf( buf, sizeof( buf ) - 1, "%.10g", value_to_print );
 }
 
 wxString stringValue( buf, wxConvUTF8 );
 
 if( aAddUnitsText )
 stringValue += EDA_UNIT_UTILS::GetText( aUnits, aType );
 
 return stringValue;
}
 
 
 
// A lower-precision (for readability) version of StringFromValue()
wxString EDA_UNIT_UTILS::UI::MessageTextFromValue( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 int aValue,
 bool aAddUnitLabel,
 EDA_DATA_TYPE aType )
{
 return MessageTextFromValue( aIuScale, aUnits, double( aValue ), aAddUnitLabel, aType );
}
 
 
// A lower-precision (for readability) version of StringFromValue()
wxString EDA_UNIT_UTILS::UI::MessageTextFromValue( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 long long int aValue,
 bool aAddUnitLabel,
 EDA_DATA_TYPE aType )
{
 return MessageTextFromValue( aIuScale, aUnits, double( aValue ), aAddUnitLabel, aType );
}
 
 
wxString EDA_UNIT_UTILS::UI::MessageTextFromValue( EDA_ANGLE aValue, bool aAddUnitLabel )
{
 if( aAddUnitLabel )
 return wxString::Format( wxT( "%.1f°" ), aValue.AsDegrees() );
 else
 return wxString::Format( wxT( "%.1f" ), aValue.AsDegrees() );
}
 
 
// A lower-precision (for readability) version of StringFromValue()
wxString EDA_UNIT_UTILS::UI::MessageTextFromValue( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 double aValue, bool aAddUnitsText,
 EDA_DATA_TYPE aType )
{
 wxString text;
 const wxChar* format;
 double value = aValue;
 
 switch( aType )
 {
 case EDA_DATA_TYPE::VOLUME:
 value = ToUserUnit( aIuScale, aUnits, value );
 // Fall through to continue computation
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::AREA:
 value = ToUserUnit( aIuScale, aUnits, value );
 // Fall through to continue computation
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::DISTANCE:
 value = ToUserUnit( aIuScale, aUnits, value );
 }
 
 switch( aUnits )
 {
 default:
 case EDA_UNITS::MILLIMETRES:
#if defined( EESCHEMA )
 format = wxT( "%.2f" );
#else
 format = wxT( "%.4f" );
#endif
 break;
 
 case EDA_UNITS::MILS:
#if defined( EESCHEMA )
 format = wxT( "%.0f" );
#else
 format = wxT( "%.2f" );
#endif
 break;
 
 case EDA_UNITS::INCHES:
#if defined( EESCHEMA )
 format = wxT( "%.3f" );
#else
 format = wxT( "%.4f" );
#endif
 break;
 
 case EDA_UNITS::DEGREES:
 // 3 digits in mantissa should be good for rotation in degree
 format = wxT( "%.3f" );
 break;
 
 case EDA_UNITS::UNSCALED:
 format = wxT( "%.0f" );
 break;
 }
 
 text.Printf( format, value );
 
 if( aAddUnitsText )
 text += EDA_UNIT_UTILS::GetText( aUnits, aType );
 
 return text;
}
 
 
double EDA_UNIT_UTILS::UI::FromUserUnit( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 double aValue )
{
 switch( aUnits )
 {
 case EDA_UNITS::MILLIMETRES:
 return MM_TO_IU( aValue, aIuScale );
 
 case EDA_UNITS::MILS:
 return MILS_TO_IU( aValue, aIuScale );
 
 case EDA_UNITS::INCHES:
 return IN_TO_IU( aValue, aIuScale );
 
 default:
 case EDA_UNITS::DEGREES:
 case EDA_UNITS::UNSCALED:
 case EDA_UNITS::PERCENT:
 return aValue;
 }
}
 
 
double EDA_UNIT_UTILS::UI::DoubleValueFromString( const wxString& aTextValue )
{
 double dtmp = 0;
 
 // Acquire the 'right' decimal point separator
 const struct lconv* lc = localeconv();
 
 wxChar decimal_point = lc->decimal_point[0];
 wxString buf( aTextValue.Strip( wxString::both ) );
 
 // Convert any entered decimal point separators to the 'right' one
 buf.Replace( wxT( "." ), wxString( decimal_point, 1 ) );
 buf.Replace( wxT( "," ), wxString( decimal_point, 1 ) );
 
 // Find the end of the numeric part
 unsigned brk_point = 0;
 
 while( brk_point < buf.Len() )
 {
 wxChar ch = buf[brk_point];
 
 if( !( ( ch >= '0' && ch <= '9' ) || ( ch == decimal_point ) || ( ch == '-' )
 || ( ch == '+' ) ) )
 {
 break;
 }
 
 ++brk_point;
 }
 
 // Extract the numeric part
 buf.Left( brk_point ).ToDouble( &dtmp );
 
 return dtmp;
}
 
 
double EDA_UNIT_UTILS::UI::DoubleValueFromString( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 const wxString& aTextValue, EDA_DATA_TYPE aType )
{
 double dtmp = 0;
 
 // Acquire the 'right' decimal point separator
 const struct lconv* lc = localeconv();
 
 wxChar decimal_point = lc->decimal_point[0];
 wxString buf( aTextValue.Strip( wxString::both ) );
 
 // Convert any entered decimal point separators to the 'right' one
 buf.Replace( wxT( "." ), wxString( decimal_point, 1 ) );
 buf.Replace( wxT( "," ), wxString( decimal_point, 1 ) );
 
 // Find the end of the numeric part
 unsigned brk_point = 0;
 
 while( brk_point < buf.Len() )
 {
 wxChar ch = buf[brk_point];
 
 if( !( (ch >= '0' && ch <= '9') || (ch == decimal_point) || (ch == '-') || (ch == '+') ) )
 break;
 
 ++brk_point;
 }
 
 // Extract the numeric part
 buf.Left( brk_point ).ToDouble( &dtmp );
 
 // Check the optional unit designator (2 ch significant)
 wxString unit( buf.Mid( brk_point ).Strip( wxString::leading ).Left( 2 ).Lower() );
 
 if( aUnits == EDA_UNITS::MILLIMETRES
 || aUnits == EDA_UNITS::MILS
 || aUnits == EDA_UNITS::INCHES )
 {
 if( unit == wxT( "mm" ) )
 {
 aUnits = EDA_UNITS::MILLIMETRES;
 }
 else if( unit == wxT( "mi" ) || unit == wxT( "th" ) )
 {
 aUnits = EDA_UNITS::MILS;
 }
 else if( unit == wxT( "in" ) || unit == wxT( "\"" ) )
 {
 aUnits = EDA_UNITS::INCHES;
 }
 else if( unit == wxT( "oz" ) ) // 1 oz = 1.37 mils
 {
 aUnits = EDA_UNITS::MILS;
 dtmp *= 1.37;
 }
 }
 else if( aUnits == EDA_UNITS::DEGREES )
 {
 if( unit == wxT( "ra" ) ) // Radians
 dtmp *= 180.0f / M_PI;
 }
 
 switch( aType )
 {
 case EDA_DATA_TYPE::VOLUME:
 dtmp = FromUserUnit( aIuScale, aUnits, dtmp );
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::AREA:
 dtmp = FromUserUnit( aIuScale, aUnits, dtmp );
 KI_FALLTHROUGH;
 
 case EDA_DATA_TYPE::DISTANCE:
 dtmp = FromUserUnit( aIuScale, aUnits, dtmp );
 }
 
 return dtmp;
}
 
 
long long int EDA_UNIT_UTILS::UI::ValueFromString( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits,
 const wxString& aTextValue, EDA_DATA_TYPE aType )
{
 double value = DoubleValueFromString( aIuScale, aUnits, aTextValue, aType );
 
 return KiROUND<double, long long int>( value );
}
 
 
long long int EDA_UNIT_UTILS::UI::ValueFromString( const wxString& aTextValue )
{
 double value = DoubleValueFromString( aTextValue );
 
 return KiROUND<double, long long int>( value );
}