sim_plot_panel.cpp File Reference

#include "sim_plot_colors.h"
#include "sim_plot_panel.h"
#include "sim_plot_frame.h"
#include <algorithm>
#include <limits>
#include <wx/regex.h>

Go to the source code of this file.

Classes
class	LIN_SCALE< parent >
class	LOG_SCALE< parent >

Functions
static wxString	formatFloat (double x, int nDigits)
static void	getSISuffix (double x, const wxString &unit, int &power, wxString &suffix)
static int	countDecimalDigits (double x, int maxDigits)
	wxDEFINE_EVENT (EVT_SIM_CURSOR_UPDATE, wxCommandEvent)

Function Documentation

countDecimalDigits()

static int countDecimalDigits ( double  x, int  maxDigits  )

static

Definition at line 103 of file sim_plot_panel.cpp.

{
    if( std::isnan( x ) )
    {
        // avoid trying to count the decimals of NaN
        return 0;
    }

    int64_t k = (int)( ( x - floor( x ) ) * pow( 10.0, (double) maxDigits ) );
    int n = 0;

    while( k && ( ( k % 10LL ) == 0LL || ( k % 10LL ) == 9LL ) )
    {
        k /= 10LL;
    }

    n = 0;

    while( k != 0LL )
    {
        n++;
        k /= 10LL;
    }

    return n;
}

Referenced by LIN_SCALE< parent >::formatLabels(), and LOG_SCALE< parent >::formatLabels().

formatFloat()

static wxString formatFloat ( double  x, int  nDigits  )

static

Definition at line 35 of file sim_plot_panel.cpp.

{
    wxString rv, fmt;

    if( nDigits )
    {
        fmt.Printf( "%%.0%df", nDigits );
    }
    else
    {
        fmt = wxT( "%.0f" );
    }

    rv.Printf( fmt, x );

    return rv;
}

Referenced by LIN_SCALE< parent >::formatLabels(), and LOG_SCALE< parent >::formatLabels().

getSISuffix()

static void getSISuffix ( double  x, const wxString &  unit, int &  power, wxString &  suffix  )

static

Definition at line 54 of file sim_plot_panel.cpp.

{
    const int n_powers = 11;

    const struct
    {
        double exponent;
        char suffix;
    } 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;

    if( x == 0.0 )
        return;

    for( int i = 0; i < n_powers - 1; i++ )
    {
        double r_cur = pow( 10, powers[i].exponent );

        if( fabs( x ) >= r_cur && fabs( x ) < r_cur * 1000.0 )
        {
            power = powers[i].exponent;

            if( powers[i].suffix )
                suffix = wxString( powers[i].suffix ) + unit;
            else
                suffix = unit;

            return;
        }
    }
}

Referenced by LIN_SCALE< parent >::formatLabels(), and LOG_SCALE< parent >::formatLabels().

wxDEFINE_EVENT()

wxDEFINE_EVENT	(	EVT_SIM_CURSOR_UPDATE	,
		wxCommandEvent
	)