kicad/pcb_calculator/transline_ident.cpp

476 lines
22 KiB
C++
Raw Normal View History

2014-10-23 17:53:38 +00:00
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2011-2014 Jean-Pierre Charras
* Copyright (C) 2004-2014 KiCad Developers, see AUTHORS.txt for contributors.
2014-10-23 17:53:38 +00:00
*
* 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 3
2014-10-23 17:53:38 +00:00
* 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, see <http://www.gnu.org/licenses/>.
2014-10-23 17:53:38 +00:00
*/
/**
* @file transline_ident.cpp
*/
#include <wx/intl.h>
#include <wx/arrstr.h>
2020-10-13 01:55:32 +00:00
#include <kiface_i.h>
#include <bitmaps.h>
// transline specific functions:
2020-10-13 01:55:32 +00:00
#include "transline/transline.h"
#include "transline/microstrip.h"
#include "transline/coplanar.h"
#include "transline/rectwaveguide.h"
#include "transline/coax.h"
#include "transline/c_microstrip.h"
#include "transline/stripline.h"
#include "transline/twistedpair.h"
#include "pcb_calculator_settings.h"
#include "widgets/unit_selector.h"
#include "transline_ident.h"
/*
* TRANSLINE_PRM
* A class to handle one parameter of transline
*/
TRANSLINE_PRM::TRANSLINE_PRM( PRM_TYPE aType, PRMS_ID aId,
const char* aKeywordCfg,
const wxString& aDlgLabel,
const wxString& aToolTip,
double aValue,
bool aConvUnit )
{
m_Type = aType;
m_Id = aId;
m_DlgLabel = aDlgLabel;
m_KeyWord = aKeywordCfg;
m_ToolTip = aToolTip;
m_Value = aValue;
m_ConvUnit = aConvUnit;
m_ValueCtrl = NULL;
m_UnitCtrl = NULL;
m_UnitSelection = 0;
m_NormalizedValue = 0;
}
double TRANSLINE_PRM::ToUserUnit()
{
if( m_UnitCtrl && m_ConvUnit )
return 1.0 / ( (UNIT_SELECTOR*) m_UnitCtrl )->GetUnitScale();
else
return 1.0;
}
double TRANSLINE_PRM::FromUserUnit()
{
if( m_UnitCtrl )
return ( (UNIT_SELECTOR*) m_UnitCtrl )->GetUnitScale();
else
return 1.0;
}
/*
* TRANSLINE_IDENT
* A class to handle a list of parameters of a given transline
* Important note:
* the first string of TRANSLINE_PRM (m_KeyWord) is a keyword in config file.
* it can contain only ASCII7 chars
* the second string of TRANSLINE_PRM (m_DlgLabel) is a string translated for dialog,
* so mark it for translation (m_KeyWord and m_DlgLabel are usually the same in English)
* and of course do not mark translatable m_DlgLabel that obviously cannot be translated,
* like "H" or "H_t"
*/
TRANSLINE_IDENT::TRANSLINE_IDENT( enum TRANSLINE_TYPE_ID aType )
{
m_Type = aType; // The type of transline handled
m_Icon = NULL; // An xpm icon to display in dialogs
m_TLine = NULL; // The TRANSLINE itself
m_HasPrmSelection = false; // true if selection of parameters must be enabled in dialog menu
// Add common prms:
// Default values are for FR4
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, EPSILONR_PRM,
"Er", wxT( "εr" ),
_( "Substrate relative permittivity (dielectric constant)" ),
4.6, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, TAND_PRM,
"TanD", wxT( "tan δ" ),
_( "Dielectric loss (dissipation factor)" ),
2e-2, false ) );
// Default value is for copper
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, RHO_PRM,
"Rho", wxT( "ρ" ),
_( "Electrical resistivity or specific electrical resistance of conductor (ohm*meter)" ),
1.72e-8, false ) );
// Default value is in GHz
AddPrm( new TRANSLINE_PRM( PRM_TYPE_FREQUENCY, FREQUENCY_PRM,
"Frequency", _( "Frequency" ),
_( "Frequency of the input signal" ), 1.0, true ) );
switch( m_Type )
{
case MICROSTRIP_TYPE: // microstrip
m_TLine = new MICROSTRIP();
m_Icon = KiBitmapNew( BITMAPS::microstrip );
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_PRM,
"H", "H", _( "Height of substrate" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_T_PRM,
"H_t", "H(top)", _( "Height of box top" ), 1e20, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, T_PRM,
"T", "T",
_( "Strip thickness" ), 0.035, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, ROUGH_PRM,
"Rough", _( "Roughness" ),
_( "Conductor roughness" ), 0.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MUR_PRM,
"mu Rel S", wxString::Format( wxT( "μ(%s)" ), _( "substrate" ) ),
_( "Relative permeability (mu) of substrate" ), 1, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"W", "W", _( "Line width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
2021-02-14 18:52:22 +00:00
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0.0, true ) );
break;
case CPW_TYPE: // coplanar waveguide
m_TLine = new COPLANAR();
m_Icon = KiBitmapNew( BITMAPS::cpw );
m_HasPrmSelection = true;
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_PRM,
"H", "H", _( "Height of substrate" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, T_PRM,
"T", "T", _( "Strip thickness" ), 0.035, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"W", "W", _( "Line width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_S_PRM,
"S", "S", _( "Gap width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0.0, true ) );
break;
case GROUNDED_CPW_TYPE: // grounded coplanar waveguide
m_TLine = new GROUNDEDCOPLANAR();
m_Icon = KiBitmapNew( BITMAPS::cpw_back );
m_HasPrmSelection = true;
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_PRM,
"H", "H", _( "Height of substrate" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, T_PRM,
"T", "T", _( "Strip thickness" ), 0.035, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"W", "W", _( "Line width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_S_PRM,
"S", "S", _( "Gap width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0, true ) );
break;
case RECTWAVEGUIDE_TYPE: // rectangular waveguide
m_TLine = new RECTWAVEGUIDE();
m_Icon = KiBitmapNew( BITMAPS::rectwaveguide );
m_HasPrmSelection = true;
m_Messages.Add( _( "ZF(H10) = Ey / Hx:" ) );
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "TE-modes:" ) );
m_Messages.Add( _( "TM-modes:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MUR_PRM,
"mu Rel I", wxString::Format( wxT( "μ(%s)" ), _( "insulator" ) ),
_( "Relative permeability (mu) of insulator" ), 1, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"a", "a", _( "Width of waveguide" ), 10.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_S_PRM,
"b", "b", _( "Height of waveguide" ), 5.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Waveguide length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0, true ) );
break;
case COAX_TYPE: // coaxial cable
m_TLine = new COAX();
m_Icon = KiBitmapNew( BITMAPS::coax );
m_HasPrmSelection = true;
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "TE-modes:" ) );
m_Messages.Add( _( "TM-modes:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MUR_PRM,
"mu Rel I", wxString::Format( wxT( "μ(%s)" ), _( "insulator" ) ),
2021-02-14 18:52:22 +00:00
_( "Relative permeability (mu) of insulator" ), 1, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_DIAM_IN_PRM,
"Din", _( "Din" ),
_( "Inner diameter (conductor)" ), 1.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_DIAM_OUT_PRM,
"Dout", _( "Dout" ),
_( "Outer diameter (insulator)" ), 8.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0.0, true ) );
break;
case C_MICROSTRIP_TYPE: // coupled microstrip
m_TLine = new C_MICROSTRIP();
m_Icon = KiBitmapNew( BITMAPS::c_microstrip );
m_HasPrmSelection = true;
m_Messages.Add( wxString::Format( _( "Effective %s (even):" ), wxT( "εr" ) ) );
m_Messages.Add( wxString::Format( _( "Effective %s (odd):" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses (even):" ) );
m_Messages.Add( _( "Conductor losses (odd):" ) );
m_Messages.Add( _( "Dielectric losses (even):" ) );
m_Messages.Add( _( "Dielectric losses (odd):" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_PRM,
"H", "H", _( "Height of substrate" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_T_PRM,
"H_t", "H_t", _( "Height of box top" ), 1e20, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, T_PRM,
"T", "T", _( "Strip thickness" ), 0.035, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, ROUGH_PRM,
"Rough", _( "Roughness" ),
_( "Conductor roughness" ), 0.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"W", "W", _( "Line width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_S_PRM,
"S", "S", _( "Gap width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_E_PRM,
"Zeven", _( "Zeven" ),
_( "Even mode impedance (lines driven by common voltages)" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_O_PRM,
"Zodd", _( "Zodd" ),
_( "Odd mode impedance (lines driven by opposite (differential) voltages)" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l",
_( "Electrical length" ), 0.0, true ) );
break;
case STRIPLINE_TYPE: // stripline
m_TLine = new STRIPLINE();
m_Icon = KiBitmapNew( BITMAPS::stripline );
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, H_PRM,
"H", "H", _( "Height of substrate" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, STRIPLINE_A_PRM,
"a", "a", _( "Distance between strip and top metal" ), 0.2,
true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, T_PRM,
"T", "T", _( "Strip thickness" ), 0.035, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_WIDTH_PRM,
"W", "W", _( "Line width" ), 0.2, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Line length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0, true ) );
break;
case TWISTEDPAIR_TYPE: // twisted pair
m_TLine = new TWISTEDPAIR();
m_Icon = KiBitmapNew( BITMAPS::twistedpair );
m_HasPrmSelection = true;
m_Messages.Add( wxString::Format( _( "Effective %s:" ), wxT( "εr" ) ) );
m_Messages.Add( _( "Conductor losses:" ) );
m_Messages.Add( _( "Dielectric losses:" ) );
m_Messages.Add( _( "Skin depth:" ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, TWISTEDPAIR_TWIST_PRM,
"Twists", _( "Twists" ),
_( "Number of twists per length" ), 0.0, false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
"mu Rel C", wxString::Format( wxT( "μ(%s)" ), _( "conductor" ) ),
_( "Relative permeability (mu) of conductor" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, TWISTEDPAIR_EPSILONR_ENV_PRM,
"ErEnv", wxString::Format( wxT( "εr(%s)" ), _( "environment" ) ),
_( "Relative permittivity of environment" ), 1,
false ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_DIAM_IN_PRM,
"Din", _( "Din" ),
_( "Inner diameter (conductor)" ), 1.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_DIAM_OUT_PRM,
"Dout", _( "Dout" ),
_( "Outer diameter (insulator)" ), 8.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_PHYS, PHYS_LEN_PRM,
"L", "L", _( "Cable length" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, Z0_PRM,
"Z0", "Z0", _( "Characteristic impedance" ), 50.0, true ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, DUMMY_PRM ) );
AddPrm( new TRANSLINE_PRM( PRM_TYPE_ELEC, ANG_L_PRM,
"Ang_l", "Ang_l", _( "Electrical length" ), 0.0, true ) );
break;
case END_OF_LIST_TYPE: // Not really used
break;
}
}
TRANSLINE_IDENT::~TRANSLINE_IDENT()
{
delete m_TLine;
delete m_Icon;
for( auto& ii : m_prms_List )
delete ii;
m_prms_List.clear();
}
void TRANSLINE_IDENT::ReadConfig()
{
auto cfg = static_cast<PCB_CALCULATOR_SETTINGS*>( Kiface().KifaceSettings() );
std::string name( m_TLine->m_Name );
if( cfg->m_TransLine.param_values.count( name ) )
{
wxASSERT( cfg->m_TransLine.param_units.count( name ) );
for( auto& p : m_prms_List )
{
try
{
p->m_Value = cfg->m_TransLine.param_values.at( name ).at( p->m_KeyWord );
p->m_UnitSelection = cfg->m_TransLine.param_units.at( name ).at( p->m_KeyWord );
}
catch( ... )
{}
}
}
}
void TRANSLINE_IDENT::WriteConfig()
{
auto cfg = static_cast<PCB_CALCULATOR_SETTINGS*>( Kiface().KifaceSettings() );
std::string name( m_TLine->m_Name );
for( auto& param : m_prms_List )
{
if( !std::isfinite( param->m_Value ) )
param->m_Value = 0;
cfg->m_TransLine.param_values[ name ][ param->m_KeyWord ] = param->m_Value;
cfg->m_TransLine.param_units[ name ][ param->m_KeyWord ] = param->m_UnitSelection;
}
}