kicad/eeschema/sim/sim_plot_panel.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 CERN
* Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
*
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
* 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
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* 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:
* https://www.gnu.org/licenses/gpl-3.0.html
* or you may search the http://www.gnu.org website for the version 3 license,
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* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "sim_plot_colors.h"
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#include "sim_plot_panel.h"
#include "sim_plot_frame.h"
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#include <algorithm>
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#include <limits>
#include <wx/regex.h>
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static wxString formatFloat( double x, int nDigits )
{
wxString rv, fmt;
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if( nDigits )
{
fmt.Printf( "%%.0%df", nDigits );
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}
else
{
fmt = wxT( "%.0f" );
}
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rv.Printf( fmt, x );
return rv;
}
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static void getSISuffix( double x, const wxString& unit, int& power, wxString& suffix )
{
const int n_powers = 11;
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const struct
{
double exponent;
char suffix;
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} powers[] =
{
{ -18, 'a' },
{ -15, 'f' },
{ -12, 'p' },
{ -9, 'n' },
{ -6, 'u' },
{ -3, 'm' },
{ 0, 0 },
{ 3, 'k' },
{ 6, 'M' },
{ 9, 'G' },
{ 12, 'T' },
{ 14, 'P' }
};
power = 0;
suffix = unit;
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if( x == 0.0 )
return;
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for( int i = 0; i < n_powers - 1; i++ )
{
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double r_cur = pow( 10, powers[i].exponent );
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if( fabs( x ) >= r_cur && fabs( x ) < r_cur * 1000.0 )
{
power = powers[i].exponent;
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if( powers[i].suffix )
suffix = wxString( powers[i].suffix ) + unit;
else
suffix = unit;
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return;
}
}
}
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static int countDecimalDigits( double x, int maxDigits )
{
if( std::isnan( x ) )
{
// avoid trying to count the decimals of NaN
return 0;
}
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int64_t k = (int)( ( x - floor( x ) ) * pow( 10.0, (double) maxDigits ) );
int n = 0;
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while( k && ( ( k % 10LL ) == 0LL || ( k % 10LL ) == 9LL ) )
{
k /= 10LL;
}
n = 0;
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while( k != 0LL )
{
n++;
k /= 10LL;
}
return n;
}
template <typename parent>
class LIN_SCALE : public parent
{
public:
LIN_SCALE( wxString name, wxString unit, int flags ) : parent( name, flags ), m_unit( unit ){};
void formatLabels() override
{
double maxVis = parent::AbsVisibleMaxValue();
wxString suffix;
int power, digits = 0;
int constexpr DIGITS = 3;
getSISuffix( maxVis, m_unit, power, suffix );
double sf = pow( 10.0, power );
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for( auto& l : parent::TickLabels() )
{
int k = countDecimalDigits( l.pos / sf, DIGITS );
digits = std::max( digits, k );
}
for( auto& l : parent::TickLabels() )
{
l.label = formatFloat( l.pos / sf, digits ) + suffix;
l.visible = true;
}
}
private:
const wxString m_unit;
};
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template <typename parent>
class LOG_SCALE : public parent
{
public:
LOG_SCALE( wxString name, wxString unit, int flags ) : parent( name, flags ), m_unit( unit ){};
void formatLabels() override
{
wxString suffix;
int power;
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for( auto& l : parent::TickLabels() )
{
getSISuffix( l.pos, m_unit, power, suffix );
double sf = pow( 10.0, power );
int k = countDecimalDigits( l.pos / sf, 3 );
l.label = formatFloat( l.pos / sf, k ) + suffix;
l.visible = true;
}
}
private:
const wxString m_unit;
};
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void CURSOR::Plot( wxDC& aDC, mpWindow& aWindow )
{
if( !m_window )
m_window = &aWindow;
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if( !m_visible )
return;
const auto& dataX = m_trace->GetDataX();
const auto& dataY = m_trace->GetDataY();
if( dataX.size() <= 1 )
return;
if( m_updateRequired )
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{
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m_coords.x = m_trace->s2x( aWindow.p2x( m_dim.x ) );
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// Find the closest point coordinates
auto maxXIt = std::upper_bound( dataX.begin(), dataX.end(), m_coords.x );
int maxIdx = maxXIt - dataX.begin();
int minIdx = maxIdx - 1;
// Out of bounds checks
if( minIdx < 0 )
{
minIdx = 0;
maxIdx = 1;
m_coords.x = dataX[0];
}
else if( maxIdx >= (int) dataX.size() )
{
maxIdx = dataX.size() - 1;
minIdx = maxIdx - 1;
m_coords.x = dataX[maxIdx];
}
const double leftX = dataX[minIdx];
const double rightX = dataX[maxIdx];
const double leftY = dataY[minIdx];
const double rightY = dataY[maxIdx];
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// Linear interpolation
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m_coords.y = leftY + ( rightY - leftY ) / ( rightX - leftX ) * ( m_coords.x - leftX );
m_updateRequired = false;
// Notify the parent window about the changes
wxQueueEvent( aWindow.GetParent(), new wxCommandEvent( EVT_SIM_CURSOR_UPDATE ) );
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}
else
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{
m_updateRef = true;
}
if( m_updateRef )
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{
UpdateReference();
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m_updateRef = false;
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}
// Line length in horizontal and vertical dimensions
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const wxPoint cursorPos( aWindow.x2p( m_trace->x2s( m_coords.x ) ),
aWindow.y2p( m_trace->y2s( m_coords.y ) ) );
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wxCoord leftPx = m_drawOutsideMargins ? 0 : aWindow.GetMarginLeft();
wxCoord rightPx = m_drawOutsideMargins ? aWindow.GetScrX() :
aWindow.GetScrX() - aWindow.GetMarginRight();
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wxCoord topPx = m_drawOutsideMargins ? 0 : aWindow.GetMarginTop();
wxCoord bottomPx = m_drawOutsideMargins ? aWindow.GetScrY() :
aWindow.GetScrY() - aWindow.GetMarginBottom();
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wxPen pen = GetPen();
pen.SetStyle( m_continuous ? wxPENSTYLE_SOLID : wxPENSTYLE_LONG_DASH );
aDC.SetPen( pen );
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if( topPx < cursorPos.y && cursorPos.y < bottomPx )
aDC.DrawLine( leftPx, cursorPos.y, rightPx, cursorPos.y );
if( leftPx < cursorPos.x && cursorPos.x < rightPx )
aDC.DrawLine( cursorPos.x, topPx, cursorPos.x, bottomPx );
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}
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bool CURSOR::Inside( wxPoint& aPoint )
{
if( !m_window )
return false;
return ( std::abs( (double) aPoint.x -
m_window->x2p( m_trace->x2s( m_coords.x ) ) ) <= DRAG_MARGIN )
|| ( std::abs( (double) aPoint.y -
m_window->y2p( m_trace->y2s( m_coords.y ) ) ) <= DRAG_MARGIN );
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}
void CURSOR::UpdateReference()
{
if( !m_window )
return;
m_reference.x = m_window->x2p( m_trace->x2s( m_coords.x ) );
m_reference.y = m_window->y2p( m_trace->y2s( m_coords.y ) );
}
SIM_PLOT_PANEL::SIM_PLOT_PANEL( const wxString& aCommand, wxWindow* parent,
SIM_PLOT_FRAME* aMainFrame, wxWindowID id, const wxPoint& pos,
const wxSize& size, long style, const wxString& name )
: SIM_PANEL_BASE( aCommand, parent, id, pos, size, style, name ),
m_axis_x( nullptr ),
m_axis_y1( nullptr ),
m_axis_y2( nullptr ),
m_dotted_cp( false ),
m_masterFrame( aMainFrame )
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{
m_sizer = new wxBoxSizer( wxVERTICAL );
m_plotWin = new mpWindow( this, wxID_ANY, pos, size, style );
m_plotWin->LimitView( true );
m_plotWin->SetMargins( 50, 80, 50, 80 );
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UpdatePlotColors();
switch( GetType() )
{
case ST_AC:
m_axis_x = new LOG_SCALE<mpScaleXLog>( _( "Frequency" ), wxT( "Hz" ), mpALIGN_BOTTOM );
m_axis_y1 = new LIN_SCALE<mpScaleY>( _( "Gain" ), wxT( "dBV" ), mpALIGN_LEFT );
m_axis_y2 = new LIN_SCALE<mpScaleY>( _( "Phase" ), wxT( "\u00B0" ),
mpALIGN_RIGHT ); // degree sign
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m_axis_y2->SetMasterScale( m_axis_y1 );
break;
case ST_DC:
prepareDCAxes();
break;
case ST_NOISE:
m_axis_x = new LOG_SCALE<mpScaleXLog>( _( "Frequency" ), wxT( "Hz" ), mpALIGN_BOTTOM );
m_axis_y1 = new mpScaleY( _( "noise [(V or A)^2/Hz]" ), mpALIGN_LEFT );
break;
case ST_TRANSIENT:
m_axis_x = new LIN_SCALE<mpScaleX>( _( "Time" ), wxT( "s" ), mpALIGN_BOTTOM );
m_axis_y1 = new LIN_SCALE<mpScaleY>( _( "Voltage" ), wxT( "V" ), mpALIGN_LEFT );
m_axis_y2 = new LIN_SCALE<mpScaleY>( _( "Current" ), wxT( "A" ), mpALIGN_RIGHT );
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m_axis_y2->SetMasterScale( m_axis_y1 );
break;
default:
// suppress warnings
break;
}
if( m_axis_x )
{
m_axis_x->SetTicks( false );
m_axis_x->SetNameAlign ( mpALIGN_BOTTOM );
m_plotWin->AddLayer( m_axis_x );
}
if( m_axis_y1 )
{
m_axis_y1->SetTicks( false );
m_axis_y1->SetNameAlign ( mpALIGN_LEFT );
m_plotWin->AddLayer( m_axis_y1 );
}
if( m_axis_y2 )
{
m_axis_y2->SetTicks( false );
m_axis_y2->SetNameAlign ( mpALIGN_RIGHT );
m_plotWin->AddLayer( m_axis_y2 );
}
// a mpInfoLegend displays le name of traces on the left top panel corner:
m_legend = new mpInfoLegend( wxRect( 0, 40, 200, 40 ), wxTRANSPARENT_BRUSH );
m_legend->SetVisible( false );
m_plotWin->AddLayer( m_legend );
m_plotWin->EnableDoubleBuffer( true );
m_plotWin->UpdateAll();
m_sizer->Add( m_plotWin, 1, wxALL | wxEXPAND, 1 );
SetSizer( m_sizer );
}
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SIM_PLOT_PANEL::~SIM_PLOT_PANEL()
{
// ~mpWindow destroys all the added layers, so there is no need to destroy m_traces contents
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}
void SIM_PLOT_PANEL::prepareDCAxes()
{
wxRegEx simCmd( "^.dc[[:space:]]+([[:alnum:]]+\\M).*", wxRE_ADVANCED | wxRE_ICASE );
if( simCmd.Matches( getSimCommand() ) )
{
switch( static_cast<char>( simCmd.GetMatch( getSimCommand().Lower(), 1 ).GetChar( 0 ) ) )
{
case 'v':
m_axis_x =
new LIN_SCALE<mpScaleX>( _( "Voltage (swept)" ), wxT( "V" ), mpALIGN_BOTTOM );
break;
case 'i':
m_axis_x =
new LIN_SCALE<mpScaleX>( _( "Current (swept)" ), wxT( "A" ), mpALIGN_BOTTOM );
break;
case 'r':
m_axis_x = new LIN_SCALE<mpScaleX>( _( "Resistance (swept)" ), wxT( "\u03A9" ),
mpALIGN_BOTTOM );
break;
case 't':
m_axis_x = new LIN_SCALE<mpScaleX>( _( "Temperature (swept)" ), wxT( "\u00B0C" ),
mpALIGN_BOTTOM );
break;
}
m_axis_y1 = new LIN_SCALE<mpScaleY>( _( "Voltage (measured)" ), wxT( "V" ), mpALIGN_LEFT );
m_axis_y2 = new LIN_SCALE<mpScaleY>( _( "Current" ), wxT( "A" ), mpALIGN_RIGHT );
}
}
void SIM_PLOT_PANEL::UpdatePlotColors()
{
// Update bg and fg colors:
m_plotWin->SetColourTheme( m_colors.GetPlotColor( SIM_PLOT_COLORS::COLOR_SET::BACKGROUND ),
m_colors.GetPlotColor( SIM_PLOT_COLORS::COLOR_SET::FOREGROUND ),
m_colors.GetPlotColor( SIM_PLOT_COLORS::COLOR_SET::AXIS ) );
// Update color of all traces
for( auto& t : m_traces )
if( t.second->GetCursor() )
t.second->GetCursor()->SetPen(
wxPen( m_colors.GetPlotColor( SIM_PLOT_COLORS::COLOR_SET::CURSOR ) ) );
m_plotWin->UpdateAll();
}
void SIM_PLOT_PANEL::UpdateTraceStyle( TRACE* trace )
{
int type = trace->GetType();
wxPenStyle penStyle = ( ( type & SPT_AC_PHASE || type & SPT_CURRENT ) && m_dotted_cp )
? wxPENSTYLE_DOT
: wxPENSTYLE_SOLID;
trace->SetPen( wxPen( trace->GetTraceColour(), 2, penStyle ) );
}
bool SIM_PLOT_PANEL::addTrace( const wxString& aTitle, const wxString& aName, int aPoints,
const double* aX, const double* aY, SIM_PLOT_TYPE aType,
const wxString& aParam )
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{
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TRACE* trace = nullptr;
wxString name = aTitle;
// Find previous entry, if there is one
auto prev = m_traces.find( name );
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bool addedNewEntry = ( prev == m_traces.end() );
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if( addedNewEntry )
{
if( GetType() == ST_TRANSIENT )
{
bool hasVoltageTraces = false;
for( const auto& tr : m_traces )
{
if( !( tr.second->GetType() & SPT_CURRENT ) )
{
hasVoltageTraces = true;
break;
}
}
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if( !hasVoltageTraces )
m_axis_y2->SetMasterScale( nullptr );
else
m_axis_y2->SetMasterScale( m_axis_y1 );
}
// New entry
trace = new TRACE( aName, aType, aParam );
trace->SetTraceColour( m_colors.GenerateColor( m_traces ) );
UpdateTraceStyle( trace );
m_traces[name] = trace;
// It is a trick to keep legend & coords always on the top
for( mpLayer* l : m_topLevel )
m_plotWin->DelLayer( l );
m_plotWin->AddLayer( (mpLayer*) trace );
for( mpLayer* l : m_topLevel )
m_plotWin->AddLayer( l );
}
else
{
trace = prev->second;
}
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std::vector<double> tmp( aY, aY + aPoints );
if( GetType() == ST_AC )
{
if( aType & SPT_AC_PHASE )
{
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for( int i = 0; i < aPoints; i++ )
tmp[i] = tmp[i] * 180.0 / M_PI; // convert to degrees
}
else
{
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for( int i = 0; i < aPoints; i++ )
{
// log( 0 ) is not valid.
if( tmp[i] != 0 )
tmp[i] = 20 * log( tmp[i] ) / log( 10.0 ); // convert to dB
}
}
}
trace->SetData( std::vector<double>( aX, aX + aPoints ), tmp );
if( ( aType & SPT_AC_PHASE ) || ( aType & SPT_CURRENT ) )
trace->SetScale( m_axis_x, m_axis_y2 );
else
trace->SetScale( m_axis_x, m_axis_y1 );
m_plotWin->UpdateAll();
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return addedNewEntry;
}
bool SIM_PLOT_PANEL::deleteTrace( const wxString& aName )
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{
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auto it = m_traces.find( aName );
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if( it != m_traces.end() )
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{
TRACE* trace = it->second;
m_traces.erase( it );
if( CURSOR* cursor = trace->GetCursor() )
m_plotWin->DelLayer( cursor, true );
m_plotWin->DelLayer( trace, true, true );
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ResetScales();
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return true;
}
return false;
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}
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void SIM_PLOT_PANEL::deleteAllTraces()
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{
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for( auto& t : m_traces )
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{
deleteTrace( t.first );
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}
m_traces.clear();
}
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bool SIM_PLOT_PANEL::HasCursorEnabled( const wxString& aName ) const
{
TRACE* t = GetTrace( aName );
return t ? t->HasCursor() : false;
}
void SIM_PLOT_PANEL::EnableCursor( const wxString& aName, bool aEnable )
{
TRACE* t = GetTrace( aName );
if( t == nullptr || t->HasCursor() == aEnable )
return;
if( aEnable )
{
CURSOR* c = new CURSOR( t, this );
int plotCenter = GetPlotWin()->GetMarginLeft()
+ ( GetPlotWin()->GetXScreen() - GetPlotWin()->GetMarginLeft()
- GetPlotWin()->GetMarginRight() )
/ 2;
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c->SetX( plotCenter );
c->SetPen( wxPen( m_colors.GetPlotColor( SIM_PLOT_COLORS::COLOR_SET::CURSOR ) ) );
t->SetCursor( c );
m_plotWin->AddLayer( c );
}
else
{
CURSOR* c = t->GetCursor();
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t->SetCursor( nullptr );
m_plotWin->DelLayer( c, true );
}
// Notify the parent window about the changes
wxQueueEvent( GetParent(), new wxCommandEvent( EVT_SIM_CURSOR_UPDATE ) );
}
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void SIM_PLOT_PANEL::ResetScales()
{
if( m_axis_x )
m_axis_x->ResetDataRange();
if( m_axis_y1 )
m_axis_y1->ResetDataRange();
if( m_axis_y2 )
m_axis_y2->ResetDataRange();
for( auto t : m_traces )
t.second->UpdateScales();
}
wxDEFINE_EVENT( EVT_SIM_CURSOR_UPDATE, wxCommandEvent );