/* HARMONIC PATTERN DETECTION using ATR type Peaks and Troughs

Automatic Detection of Harmonic Patterns - Gartley, Bat, Butterfly and Crab.
Original code by joy.edakad@gmail.com, see:
http://www.inditraders.com/amibroker/1934-afl-harmonic-patterns.html
file: Harmonic1.1.afl (2009)

Modernized by E.M.Pottasch (Dec 2016).
- Using ATR based pivots instead of fractal based
- Improved visualisation of the patterns.
- Nomenclature of variables, constants and arrays, adjusted
	following code from David Keleher.
- uncompleted pivots given white color  
- multiple issues of the original code corrected for 

The original code was based on "fractal type pivots", this
code uses "ATR type pivots". This code also includes a time
frame factor. To fully understand how to interpret a pattern
use the Amibroker playback utility and see how the patterns
develop. */

Version( 6.0 );
GfxSetCoordsMode( 1 );
GfxSetOverlayMode( 1 );

BullBat4 = BullButterfly4 = BullCrab4 = BullGartley4 = 0;
BullBat = BullButterfly = BullCrab = BullGartley = 0;
BearBat4 = BearButterfly4 = BearCrab4 = BearGartley4 = 0;
BearBat = BearButterfly = BearCrab = BearGartley = 0;
pk = tr = pkn = trn = 0;

bi = BarIndex();
fvb = FirstVisibleValue( bi );
lvb = LastVisibleValue( bi );

GraphXSpace = 5;
SetChartBkColor( colorBlack );
SetChartOptions( 1, chartShowDates, chartGridMiddle, 0, 0, 0 );
SetBarFillColor( IIf( C > O, ColorRGB( 0, 75, 0 ), IIf( C <= O, ColorRGB( 75, 0, 0 ), colorLightGrey ) ) );
Plot( C, "", IIf( C > O, ColorRGB( 0, 255, 0 ), IIf( C <= O, ColorRGB( 255, 0, 0 ), colorLightGrey ) ), 64, Null, Null, 0, 0, 1 );

_SECTION_BEGIN( "Patterns" );
perBull = Param( "Bullish ATR Period", 20, 1, 150, 1 );
perBear = Param( "Bearish ATR Period", 20, 1, 150, 1 );
multBull = Param( "Bullish ATR Multiple", 2, 1, 4, 0.05 );
multBear = Param( "Bearish ATR Multiple", 2, 1, 4, 0.05 );
trailValueClose = ParamToggle( "Trail value", "High/Low|Close", 1 );
//tfrm = in1Minute * Param( "Time Frame (min)", 5, 1, 1440 * 10, 1 ); // 1440 minutes is 1 day
tfrm = in1Minute * Interval() / 60 * Param( "Chart Time Frame Factor", 1, 1, 10, 1 ); // factor 1 uses timeframe of chart
showATRPivots = ParamToggle( "Show ATR Pivots", "Off|On", 0 );
showLabels = ParamToggle( "Show ATR Pivot Labels", "Off|On", 0 );
bu = ParamToggle( "Show Bullish Pattern", "Off|On", 1 );
be = ParamToggle( "Show Bearish Pattern", "Off|On", 1 );
nBull = Param( "Max Number of Bullish Patterns", 10, 0, 100, 1 );
nBear = Param( "Max Number of Bearish Patterns", 10, 0, 100, 1 );
dBat = ParamToggle( "Draw Bat", "Off|On", 1 );
dBut = ParamToggle( "Draw Buterfly", "Off|On", 1 );
dCrab = ParamToggle( "Draw Crab", "Off|On", 1 );
dGart = ParamToggle( "Draw Gartley", "Off|On", 1 );
showPatternDevelopmentPoints = ParamToggle( "Show Points of Pattern Development", "Off|On", 1 );
showPatternLabels = ParamToggle( "Show Pattern Labels", "Off|On", 0 );
showPatternName = ParamToggle( "Show Pattern Name", "Off|On", 1 );
_SECTION_END();

_SECTION_BEGIN( "Gartley" );
GBmin = Param( "Swing B Min.", 0.55, 0.3, 1, 0.01 );
GBmax = Param( "Swing B Max.", 0.72, 0.4, 1, 0.01 );
GCmin = Param( "Swing C Min.", 0.38, 0.3, 1.27, 0.01 );
GCmax = Param( "Swing C Max.", 1.0, 0.4, 1.27, 0.01 );
GDmin = Param( "Swing D Min.(XA)", 0.55, 0.3, 1, 0.01 );
GDmax = Param( "Swing D Max.(XA)", 1.0, 0.4, 1.0, 0.01 );
_SECTION_END();

_SECTION_BEGIN( "Bat" );
BatBmin = Param( "Swing B Min.", 0.38, 0.3, 1, 0.01 );
BatBmax = Param( "Swing B Max.", 0.55, 0.4, 1, 0.01 );
BatCmin = Param( "Swing C Min.", 0.38, 0.3, 1.62, 0.01 );
BatCmax = Param( "Swing C Max.", 1.27, 0.4, 1.62, 0.01 );
BatDmin = Param( "Swing D Min.(XA)", 0.5, 0.3, 1, 0.01 );
BatDmax = Param( "Swing D Max.(XA)", 1.0, 0.4, 1.0, 0.01 );
_SECTION_END();

_SECTION_BEGIN( "Butterfly" );
BtBmin = Param( "Swing B Min.", 0.55, 0.3, 1, 0.01 );
BtBmax = Param( "Swing B Max.", 0.9, 0.4, 1, 0.01 );
BtCmin = Param( "Swing C Min.", 0.38, 0.3, 1.62, 0.01 );
BtCmax = Param( "Swing C Max.", 1.27, 0.4, 1.62, 0.01 );
BtDmin = Param( "Swing D Min.(XA)", 1, 1, 1.8, 0.01 );
BtDmax = Param( "Swing D Max.(XA)", 1.38, 1, 1.8, 0.01 );
_SECTION_END();

_SECTION_BEGIN( "Crab" );
CBmin = Param( "Swing B Min.", 0.38, 0.3, 1, 0.01 );
CBmax = Param( "Swing B Max.", 0.65, 0.4, 1, 0.01 );
CCmin = Param( "Swing C Min.", 0.38, 0.3, 1.62, 0.01 );
CCmax = Param( "Swing C Max.", 1.270, 0.4, 1.62, 0.01 );
CDmin = Param( "Swing D Min.(XA)", 1.25, 1, 1.8, 0.01 );
CDmax = Param( "Swing D Max.(XA)", 1.8, 1, 2, 0.01 );
_SECTION_END();

function ATRtrail_func()
{
    // Trail code largely from:
    // http://traders.com/Documentation/FEEDbk_docs/2009/06/TradersTips.html
    if( trailValueClose )
    {
        tvHigh = C;
        tvLow = C;
    }
    else
    {
        tvHigh = H;
        tvLow = L;
    }

    sup = tvHigh - multBull * ATR( perBull );
    res = tvLow + multBear * ATR( perBear );

    trailARRAY = Null;
    trailstop = 0;

    for( i = 1; i < BarCount; i++ )
    {
        if( C[ i ] > trailstop AND C[ i - 1 ] > trailstop )
            trailstop = Max( trailstop, sup[ i ] );
        else
            if( C[ i ] < trailstop AND C[ i - 1 ] < trailstop )
                trailstop = Min( trailstop, res[ i ] );
            else
                trailstop = IIf( C[ i ] > trailstop, sup[ i ], res[ i ] );

        trailARRAY[ i ] = trailstop;
    }

    return trailARRAY;
}

TimeFrameSet( tfrm );
trBull = multBull * ATR( perBull );
trBear = multBear * ATR( perBear );
trailArray = ATRtrail_func();
ts = IIf( trailArray > C, trailArray, Null ); // dntrend
tl = IIf( trailArray < C, trailArray, Null ); // uptrend
TimeFrameRestore();

ts = TimeFrameExpand( ts, tfrm, expandlast );
tl = TimeFrameExpand( tl, tfrm, expandlast );

lll = LLV( L, BarsSince( !IsEmpty( tl ) ) );
lll = IIf( ts, lll, Null );
trn = ts AND L == lll;

hhh = HHV( H, BarsSince( !IsEmpty( ts ) ) );
hhh = IIf( tl, hhh, Null );
pkn = tl AND H == hhh;

tr = ExRem( Reverse( trn ), Reverse( pkn ) );
pk = ExRem( Reverse( pkn ), Reverse( trn ) );

tr = Reverse( tr );
pk = Reverse( pk );

for( i = 0; i < 3; i++ )
{
    VarSet( "px" + i, ValueWhen( pk, bi, i ) );
    VarSet( "tx" + i, ValueWhen( tr, bi, i ) );
    VarSet( "ph" + i, ValueWhen( pk, H, i ) );
    VarSet( "tl" + i, ValueWhen( tr, L, i ) );
}

ll = tr AND tl1 < tl2;
hl = tr AND tl1 > tl2;
hh = pk AND ph1 > ph2;
lh = pk AND ph1 < ph2;
dt = pk AND ph1 == ph2;
db = tr AND tl1 == tl2;

if( showATRPivots )
{
    PlotShapes( shapeSmallCircle * tr, IIf( tx1 < px0, ColorRGB( 0, 0, 255 ), colorWhite ), 0, L, -10 );
    PlotShapes( shapeSmallCircle * pk, IIf( px1 < tx0, ColorRGB( 255, 0, 0 ), colorWhite ), 0, H, 10 );
}

// +++ Bullish Patterns
PTvalid = ( px1 > tx1 AND tx1 > px2 AND px2 > tx2 ) AND pk;

if( dGart AND bu )
{
    BullGartley4 = PTvalid AND( ph2 - tl1 ) / ( ph2 - tl2 ) > GBmin AND( ph2 - tl1 ) / ( ph2 - tl2 ) < GBmax
                   AND( ph1 - tl1 ) / ( ph2 - tl1 ) > GCMin AND( ph1 - tl1 ) / ( ph2 - tl1 ) < GCMax;
    BullGartley = IIf( Nz( LowestSince( BullGartley4, L ) ) < Nz( ValueWhen( BullGartley4, ph2 ) ) - ( Nz( ValueWhen( BullGartley4, ph2 ) ) - Nz( ValueWhen( BullGartley4, tl2 ) ) ) * GDmin AND
                       Nz( LowestSince( bullGartley4, L ) ) > Nz( ValueWhen( BullGartley4, ph2 ) ) - ( Nz( ValueWhen( BullGartley4, ph2 ) ) - Nz( ValueWhen( BullGartley4, tl2 ) ) ) * GDmax AND
                       Nz( HighestSince( BullGartley4, H ) ) <= Nz( ValueWhen( BullGartley4, ph1 ) ) AND
                       Nz( LowestSince( BullGartley4, L ) ) < Nz( ValueWhen( BullGartley4, tl1 ) ) AND
                       Nz( trn ) AND
                       Nz( LowestSince( bullGartley4, L ) ) == L, True, False );
}

if( dBat AND bu )
{
    BullBat4 = PTvalid AND( ph2 - tl1 ) / ( ph2 - tl2 ) > BatBmin AND( ph2 - tl1 ) / ( ph2 - tl2 ) < BatBmax
               AND( ph1 - tl1 ) / ( ph2 - tl1 ) > BatCMin AND( ph1 - tl1 ) / ( ph2 - tl1 ) < BatCMax;
    BullBat = IIf( Nz( LowestSince( BullBat4, L ) ) < Nz( ValueWhen( BullBat4, ph2 ) ) - ( Nz( ValueWhen( BullBat4, ph2 ) ) - Nz( ValueWhen( BullBat4, tl2 ) ) ) * BatDmin AND
                   Nz( LowestSince( BullBat4, L ) ) > Nz( ValueWhen( BullBat4, ph2 ) ) - ( Nz( ValueWhen( BullBat4, ph2 ) ) - Nz( ValueWhen( BullBat4, tl2 ) ) ) * BatDmax AND
                   Nz( HighestSince( BullBat4, H ) ) <= Nz( ValueWhen( BullBat4, ph1 ) ) AND
                   Nz( LowestSince( BullBat4, L ) ) < Nz( ValueWhen( BullBat4, tl1 ) ) AND
                   Nz( trn ) AND
                   Nz( LowestSince( BullBat4, L ) ) == L, True, False );
}

if( dBut AND bu )
{
    BullButterfly4 = PTvalid AND( ph2 - tl1 ) / ( ph2 - tl2 ) > BtBmin AND( ph2 - tl1 ) / ( ph2 - tl2 ) < BtBMax
                     AND( ph1 - tl1 ) / ( ph2 - tl1 ) > BtCmin AND( ph1 - tl1 ) / ( ph2 - tl1 ) < BtCmax;
    BullButterfly = IIf( Nz( LowestSince( BullButterfly4, L ) ) < Nz( ValueWhen( BullButterfly4, ph2 ) ) - ( Nz( ValueWhen( BullButterfly4, ph2 ) ) - Nz( ValueWhen( BullButterfly4, tl2 ) ) ) * BtDMin AND
                         Nz( LowestSince( BullButterfly4, L ) ) > Nz( ValueWhen( BullButterfly4, ph2 ) ) - ( Nz( ValueWhen( BullButterfly4, ph2 ) ) - Nz( ValueWhen( BullButterfly4, tl2 ) ) ) * BtDmax AND
                         Nz( HighestSince( BullButterfly4, H ) ) <= Nz( ValueWhen( BullButterfly4, ph1 ) ) AND
                         Nz( LowestSince( BullButterfly4, L ) ) < Nz( ValueWhen( BullButterfly4, tl2 ) ) AND
                         Nz( trn ) AND
                         Nz( LowestSince( bullButterfly4, L ) ) == L, True, False );
}

if( dCrab AND bu )
{
    BullCrab4 = PTvalid AND( ph2 - tl1 ) / ( ph2 - tl2 ) > CBmin AND( ph2 - tl1 ) / ( ph2 - tl2 ) < CBmax
                AND( ph1 - tl1 ) / ( ph2 - tl1 ) > CCmin AND( ph1 - tl1 ) / ( ph2 - tl1 ) < CCmax;
    BullCrab = IIf( Nz( LowestSince( BullCrab4, L ) ) < Nz( ValueWhen( BullCrab4, ph2 ) ) - ( Nz( ValueWhen( BullCrab4, ph2 ) ) - Nz( ValueWhen( BullCrab4, tl2 ) ) ) * CDmin AND
                    Nz( LowestSince( BullCrab4, L ) ) > Nz( ValueWhen( BullCrab4, ph2 ) ) - ( Nz( ValueWhen( BullCrab4, ph2 ) ) - Nz( ValueWhen( BullCrab4, tl2 ) ) ) * CDmax AND
                    Nz( HighestSince( BullCrab4, H ) ) <= Nz( ValueWhen( BullCrab4, ph1 ) ) AND
                    Nz( LowestSince( BullCrab4, L ) ) < Nz( ValueWhen( BullCrab4, tl2 ) ) AND
                    Nz( trn ) AND
                    Nz( LowestSince( bullGartley4, L ) ) == L, True, False );
}

BullCrab = BullCrab AND
           IIf( Nz( ValueWhen( BullCrab4, bi ) ) >= Nz( ValueWhen( BullGartley4, bi ) ) AND
                Nz( ValueWhen( BullCrab4, bi ) ) >= Nz( ValueWhen( BullBat4, bi ) ) AND
                Nz( ValueWhen( BullCrab4, bi ) ) >= Nz( ValueWhen( BullButterfly4, bi ) ), 1, 0 );

BullBat = BullBat AND
          IIf( Nz( ValueWhen( BullBat4, bi ) ) >= Nz( ValueWhen( BullGartley4, bi ) ) AND
               Nz( ValueWhen( BullBat4, bi ) ) >= Nz( ValueWhen( BullCrab4, bi ) ) AND
               Nz( ValueWhen( BullBat4, bi ) ) >= Nz( ValueWhen( BullButterfly4, bi ) ), 1, 0 );

BullButterfly = BullButterfly AND
                IIf( Nz( ValueWhen( BullButterfly4, bi ) ) >= Nz( ValueWhen( BullGartley4, bi ) ) AND
                     Nz( ValueWhen( BullButterfly4, bi ) ) >= Nz( ValueWhen( BullCrab4, bi ) ) AND
                     Nz( ValueWhen( BullButterfly4, bi ) ) >= Nz( ValueWhen( BullBat4, bi ) ), 1, 0 );

BullGartley = BullGartley AND
              IIf( Nz( ValueWhen( BullGartley4, bi ) ) >= Nz( ValueWhen( BullBat4, bi ) ) AND
                   Nz( ValueWhen( BullGartley4, bi ) ) >= Nz( ValueWhen( BullCrab4, bi ) ) AND
                   Nz( ValueWhen( BullGartley4, bi ) ) >= Nz( ValueWhen( BullButterfly4, bi ) ), 1, 0 );

BullHar4 = BullGartley4 OR BullButterfly4 OR BullBat4 OR BullCrab4 ;
BullHar = BullGartley OR BullButterfly OR BullBat OR BullCrab ;

buXy = ValueWhen( BullHar4, tl2 );
buXx = ValueWhen( BullHar4, tx2 );
buAy = ValueWhen( BullHar4, ph2 );
buAx = ValueWhen( BullHar4, px2 );
buBy = ValueWhen( BullHar4, tl1 );
buBx = ValueWhen( BullHar4, tx1 );
buCy = ValueWhen( BullHar4, ph1 );
buCx = ValueWhen( BullHar4, px1 );
buDy = ValueWhen( BullHar, L );
buDx = ValueWhen( BullHar, bi );

buABdXA = ( buAy - buBy ) / ( buAy - buXy );
buBCdAB = ( buCy - buBy ) / ( buAy - buBy );
buADdXA = ( buAy - buDy ) / ( buAy - buXy );
buBCdCD = ( buCy - buDy ) / ( buCy - buBy );

function drawBullishPattern( i, patternName )
{
    GfxSelectSolidBrush( ColorRGB( 0, 0, 50 ) );
    GfxSetBkColor( colorBlack );
    GfxPolygon( buXx[i], buXy[i], buAx[i], buAy[i], buBx[i], buBy[i], buCx[i], buCy[i], buDx[i], buDy[i], buBx[i], buBy[i], buXx[i], buXy[i] );
    
    GfxSelectPen( ColorRGB( 0, 0, 255 ), 2, 0 );
    GfxMoveTo( buXx[i], buXy[i] );
    GfxLineTo( buAx[i], buAy[i] );
    GfxMoveTo( buAx[i], buAy[i] );
    GfxLineTo( buBx[i], buBy[i] );
    GfxMoveTo( buBx[i], buBy[i] );
    GfxLineTo( buCx[i], buCy[i] );
    GfxMoveTo( buCx[i], buCy[i] );
    GfxLineTo( buDx[i], buDy[i] );
    GfxMoveTo( buXx[i], buXy[i] );
    GfxLineTo( buAx[i], buAy[i] );

    GfxSelectPen( ColorRGB( 0, 0, 255 ), 1, 2 );
    GfxMoveTo( buXx[i], buXy[i] );
    GfxLineTo( buBx[i], buBy[i] );
    GfxMoveTo( buAx[i], buAy[i] );
    GfxLineTo( buCx[i], buCy[i] );
    GfxMoveTo( buBx[i], buBy[i] );
    GfxLineTo( buDx[i], buDy[i] );
    GfxMoveTo( buXx[i], buXy[i] );
    GfxLineTo( buDx[i], buDy[i] );

    if( showPatternName )
    {
        GfxSetTextColor( ColorRGB( 0, 0, 0 ) );
        GfxSelectFont( "Helvetica", 10, 700 );
        GfxSetBkColor( ColorRGB( 0, 0, 255 ) );
        GfxSetTextAlign( 0 | 8 );
        GfxTextOut( patternName, buCx[i] + 3, buCy[i] );
    }

    GfxSetTextAlign( 0 | 0 );
    GfxSetTextColor( ColorRGB( 0, 0, 255 ) );
    GfxSetBkColor( ColorRGB( 0, 0, 0 ) );
    GfxSelectFont( "Helvetica", 8, 700 );
    GfxTextOut( "" + Prec( buABdXA[i], 2 ), ( buBx[i] + buXx[i] ) / 2, ( buBy[i] + buXy[i] ) / 2 );
    GfxTextOut( "" + Prec( buBCdAB[i], 2 ), ( buCx[i] + buAx[i] ) / 2, ( buCy[i] + buAy[i] ) / 2 );
    GfxTextOut( "" + Prec( buADdXA[i], 2 ), ( buDx[i] + buXx[i] ) / 2, ( buDy[i] + buXy[i] ) / 2 );
    GfxTextOut( "" + Prec( buBCdCD[i], 2 ), ( buBx[i] + buDx[i] ) / 2, ( buBy[i] + buDy[i] ) / 2 );

    if( showPatternLabels )
    {
        GfxSetTextColor( ColorRGB( 0, 0, 0 ) );
        GfxSelectFont( "Helvetica", 9, 700 );
        GfxSetBkColor( ColorRGB( 0, 0, 255 ) );
        GfxSetTextAlign( 0 | 24 );
        GfxTextOut( "X", buXx[i] - 2, buXy[i] );
        GfxTextOut( "A", buAx[i] - 2, buAy[i] );
        GfxTextOut( "B", buBx[i] - 2, buBy[i] );
        GfxTextOut( "C", buCx[i] + 1, buCy[i] );
        GfxTextOut( "D", buDx[i] + 1, buDy[i] );
    }
}

function drawBullishPatterns()
{
    flag1 = 1;
    flag2 = 0;
    cnt = 0;

    for( i = lvb; i > fvb; i-- )
    {
        if( BullHar[i] AND flag1 AND cnt < nBull )
        {
            flag1 = 0;
            flag2 = 1;
            cnt = cnt + 1;

            if( BullButterfly[i] AND bu AND dBut )
            {
                drawBullishPattern( i, "Bullish Butterfly" );
            }

            if( BullCrab[i] AND bu AND dCrab )
            {
                drawBullishPattern( i, "Bullish Crab" );
            }

            if( BullBat[i] AND bu AND dBat )
            {
                drawBullishPattern( i, "Bullish Bat" );
            }

            if( BullGartley[i] AND bu AND dGart )
            {
                drawBullishPattern( i, "Bullish Gartley" );
            }
        }

        if( BullHar4[i] AND flag2 )
        {
            flag1 = 1;
            flag2 = 0;
        }
    }
}
drawBullishPatterns();

// +++ Bearish Patterns
PTvalid = ( tx1 > px1 AND px1 > tx2 AND tx2 > px2 ) AND tr;

if( dGart AND be )
{
    BearGartley4 = PTvalid AND( ph1 - tl2 ) / ( ph2 - tl2 ) > GBmin AND( ph1 - tl2 ) / ( ph2 - tl2 ) < GBmax AND
                   ( ph1 - tl1 ) / ( ph1 - tl2 ) > GCmin AND( ph1 - tl1 ) / ( ph1 - tl2 ) < GCmax;
    BearGartley = IIf( Nz( HighestSince( bearGartley4, H ) ) > Nz( ValueWhen( BearGartley4, tl2 ) ) + ( Nz( ValueWhen( BearGartley4, ph2 ) ) - Nz( ValueWhen( BearGartley4, tl2 ) ) ) * GDmin AND
                       Nz( HighestSince( bearGartley4, H ) ) < Nz( ValueWhen( BearGartley4, tl2 ) ) + ( Nz( ValueWhen( BearGartley4, ph2 ) ) - Nz( ValueWhen( BearGartley4, tl2 ) ) ) * GDMax AND
                       Nz( LowestSince( BearGartley4, L ) ) >= Nz( ValueWhen( BearGartley4, tl1 ) ) AND
                       Nz( HighestSince( BearGartley4, H ) ) > Nz( ValueWhen( BearGartley4, ph1 ) ) AND
                       Nz( pkn ) AND
                       Nz( HighestSince( BearGartley4, H ) ) == H, True, False );
}

if( dBat AND be )
{
    BearBat4 = PTvalid AND( ph1 - tl2 ) / ( ph2 - tl2 ) > BatBmin AND( ph1 - tl2 ) / ( ph2 - tl2 ) < BatBmax AND
               ( ph1 - tl1 ) / ( ph1 - tl2 ) > BatCmin AND( ph1 - tl1 ) / ( ph1 - tl2 ) < BatCmax;
    BearBat = IIf( Nz( HighestSince( BearBat4, H ) ) > Nz( ValueWhen( BearBat4, tl2 ) ) + ( Nz( ValueWhen( BearBat4, ph2 ) ) - Nz( ValueWhen( BearBat4, tl2 ) ) ) * BatDmin AND
                   Nz( HighestSince( BearBat4, H ) ) < Nz( ValueWhen( BearBat4, tl2 ) ) + ( Nz( ValueWhen( BearBat4, ph2 ) ) - Nz( ValueWhen( BearBat4, tl2 ) ) ) * BatDMax AND
                   Nz( LowestSince( BearBat4, L ) ) >= Nz( ValueWhen( BearBat4, tl1 ) ) AND
                   Nz( HighestSince( BearBat4, H ) ) > Nz( ValueWhen( BearBat4, ph1 ) ) AND
                   Nz( pkn ) AND
                   Nz( HighestSince( BearBat4, H ) ) == H, True, False );
}

if( dBut AND be )
{
    BearButterfly4 = PTvalid AND( ph1 - tl2 ) / ( ph2 - tl2 ) > BtBmin AND( ph1 - tl2 ) / ( ph2 - tl2 ) < BtBmax AND
                     ( ph1 - tl1 ) / ( ph1 - tl2 ) > BtCmin AND( ph1 - tl1 ) / ( ph1 - tl2 ) < BtCmax;
    BearButterfly = IIf( Nz( HighestSince( BearButterfly4, H ) ) > Nz( ValueWhen( BearButterfly4, tl2 ) ) + ( Nz( ValueWhen( BearButterfly4, ph2 ) ) - Nz( ValueWhen( BearButterfly4, tl2 ) ) ) * BtDmin AND
                         Nz( HighestSince( BearButterfly4, H ) ) < Nz( ValueWhen( BearButterfly4, tl2 ) ) + ( Nz( ValueWhen( BearButterfly4, ph2 ) ) - Nz( ValueWhen( BearButterfly4, tl2 ) ) ) * BtDMax AND
                         Nz( LowestSince( BearButterfly4, L ) ) >= Nz( ValueWhen( BearButterfly4, tl1 ) ) AND
                         Nz( HighestSince( BearButterfly4, H ) ) > Nz( ValueWhen( BearButterfly4, ph2 ) ) AND
                         Nz( pkn ) AND
                         Nz( HighestSince( BearButterfly4, H ) ) == H, True, False );
}

if( dCrab AND be )
{
    BearCrab4 = PTvalid AND( ph1 - tl2 ) / ( ph2 - tl2 ) > CBmin AND( ph1 - tl2 ) / ( ph2 - tl2 ) < CBmax AND
                ( ph1 - tl1 ) / ( ph1 - tl2 ) > CCmin AND( ph1 - tl1 ) / ( ph1 - tl2 ) < CCmax;
    BearCrab = IIf( Nz( HighestSince( BearCrab4, H ) ) > Nz( ValueWhen( BearCrab4, tl2 ) ) + ( Nz( ValueWhen( BearCrab4, ph2 ) ) - Nz( ValueWhen( BearCrab4, tl2 ) ) ) * CDmin AND
                    Nz( HighestSince( BearCrab4, H ) ) < Nz( ValueWhen( BearCrab4, tl2 ) ) + ( Nz( ValueWhen( BearCrab4, ph2 ) ) - Nz( ValueWhen( BearCrab4, tl2 ) ) ) * CDMax AND
                    Nz( LowestSince( BearCrab4, L ) ) >= Nz( ValueWhen( BearCrab4, tl1 ) ) AND
                    Nz( HighestSince( BearCrab4, H ) ) > Nz( ValueWhen( BearCrab4, ph2 ) ) AND
                    Nz( pkn ) AND
                    Nz( HighestSince( BearCrab4, H ) ) == H, True, False );
}

BearCrab = BearCrab AND
           IIf( Nz( ValueWhen( BearCrab4, bi ) ) >= Nz( ValueWhen( BearGartley4, bi ) ) AND
                Nz( ValueWhen( BearCrab4, bi ) ) >= Nz( ValueWhen( BearBat4, bi ) ) AND
                Nz( ValueWhen( BearCrab4, bi ) ) >= Nz( ValueWhen( BearButterfly4, bi ) ), 1, 0 );

BearBat = BearBat AND
          IIf( Nz( ValueWhen( BearBat4, bi ) ) >= Nz( ValueWhen( BearGartley4, bi ) ) AND
               Nz( ValueWhen( BearBat4, bi ) ) >= Nz( ValueWhen( BearCrab4, bi ) ) AND
               Nz( ValueWhen( BearBat4, bi ) ) >= Nz( ValueWhen( BearButterfly4, bi ) ), 1, 0 );

BearButterfly = BearButterfly AND
                IIf( Nz( ValueWhen( BearButterfly4, bi ) ) >= Nz( ValueWhen( BearGartley4, bi ) ) AND
                     Nz( ValueWhen( BearButterfly4, bi ) ) >= Nz( ValueWhen( BearCrab4, bi ) ) AND
                     Nz( ValueWhen( BearButterfly4, bi ) ) >= Nz( ValueWhen( BearBat4, bi ) ), 1, 0 );

BearGartley = BearGartley AND
              IIf( Nz( ValueWhen( BearGartley4, bi ) ) >= Nz( ValueWhen( BearBat4, bi ) ) AND
                   Nz( ValueWhen( BearGartley4, bi ) ) >= Nz( ValueWhen( BearCrab4, bi ) ) AND
                   Nz( ValueWhen( BearGartley4, bi ) ) >= Nz( ValueWhen( BearButterfly4, bi ) ), 1, 0 );

BearHar4 = BearGartley4 OR BearButterfly4 OR BearBat4 OR BearCrab4 ;
BearHar = BearGartley OR BearButterfly OR BearBat OR BearCrab ;

beXy = ValueWhen( BearHar4, ph2 );
beXx = ValueWhen( BearHar4, px2 );
beAy = ValueWhen( BearHar4, tl2 );
beAx = ValueWhen( BearHar4, tx2 );
beBy = ValueWhen( BearHar4, ph1 );
beBx = ValueWhen( BearHar4, px1 );
beCy = ValueWhen( BearHar4, tl1 );
beCx = ValueWhen( BearHar4, tx1 );
beDy = ValueWhen( BearHar, H );
beDx = ValueWhen( BearHar, bi );

beABdXA = ( beBy - beAy ) / ( beXy - beAy );
beBCdAB = ( beBy - beCy ) / ( beBy - beAy );
beADdXA = ( beDy - beAy ) / ( beXy - beAy );
beBCdCD = ( beDy - beCy ) / ( beBy - beCy );

function drawBearishPattern( i, patternName )
{
    GfxSelectSolidBrush( ColorRGB( 50, 0, 0 ) );
    GfxSetBkColor( colorBlack );
    GfxPolygon( beXx[i], beXy[i], beAx[i], beAy[i], beBx[i], beBy[i], beCx[i], beCy[i], beDx[i], beDy[i], beBx[i], beBy[i], beXx[i], beXy[i] );
    
    GfxSelectPen( ColorRGB( 255, 0, 0 ), 2, 0 );
    GfxMoveTo( beXx[i], beXy[i] );
    GfxLineTo( beAx[i], beAy[i] );
    GfxMoveTo( beAx[i], beAy[i] );
    GfxLineTo( beBx[i], beBy[i] );
    GfxMoveTo( beBx[i], beBy[i] );
    GfxLineTo( beCx[i], beCy[i] );
    GfxMoveTo( beCx[i], beCy[i] );
    GfxLineTo( beDx[i], beDy[i] );
    GfxMoveTo( beXx[i], beXy[i] );
    GfxLineTo( beAx[i], beAy[i] );

    GfxSelectPen( ColorRGB( 255, 0, 0 ), 1, 2 );
    GfxMoveTo( beXx[i], beXy[i] );
    GfxLineTo( beBx[i], beBy[i] );
    GfxMoveTo( beAx[i], beAy[i] );
    GfxLineTo( beCx[i], beCy[i] );
    GfxMoveTo( beBx[i], beBy[i] );
    GfxLineTo( beDx[i], beDy[i] );
    GfxMoveTo( beXx[i], beXy[i] );
    GfxLineTo( beDx[i], beDy[i] );

    if( showPatternName )
    {
        GfxSetTextColor( ColorRGB( 0, 0, 0 ) );
        GfxSelectFont( "Helvetica", 10, 700 );
        GfxSetBkColor( ColorRGB( 255, 0, 0 ) );
        GfxSetTextAlign( 0 | 0 );
        GfxTextOut( patternName, beCx[i] + 3, beCy[i] );
    }

    GfxSetTextAlign( 0 | 0 );
    GfxSetTextColor( ColorRGB( 255, 0, 0 ) );
    GfxSetBkColor( ColorRGB( 0, 0, 0 ) );
    GfxSelectFont( "Helvetica", 8, 700 );
    GfxTextOut( "" + Prec( beABdXA[i], 2 ), ( beBx[i] + beXx[i] ) / 2, ( beBy[i] + beXy[i] ) / 2 );
    GfxTextOut( "" + Prec( beBCdAB[i], 2 ), ( beCx[i] + beAx[i] ) / 2, ( beCy[i] + beAy[i] ) / 2 );
    GfxTextOut( "" + Prec( beADdXA[i], 2 ), ( beDx[i] + beXx[i] ) / 2, ( beDy[i] + beXy[i] ) / 2 );
    GfxTextOut( "" + Prec( beBCdCD[i], 2 ), ( beBx[i] + beDx[i] ) / 2, ( beBy[i] + beDy[i] ) / 2 );

    if( showPatternLabels )
    {
        GfxSetTextColor( ColorRGB( 0, 0, 0 ) );
        GfxSelectFont( "Helvetica", 9, 700 );
        GfxSetBkColor( ColorRGB( 255, 0, 0 ) );
        GfxSetTextAlign( 0 | 24 );
        GfxTextOut( "X", beXx[i] - 2, beXy[i] );
        GfxTextOut( "A", beAx[i] - 2, beAy[i] );
        GfxTextOut( "B", beBx[i] - 2, beBy[i] );
        GfxTextOut( "C", beCx[i] + 1, beCy[i] );
        GfxTextOut( "D", beDx[i] + 1, beDy[i] );
    }
}

function drawBearishPatterns()
{
    flag1 = 1;
    flag2 = 0;
    cnt = 0;

    for( i = lvb; i > fvb; i-- )
    {
        if( BearHar[i] AND flag1 AND cnt < nBear )
        {
            flag1 = 0;
            flag2 = 1;
            cnt = cnt + 1;

            if( BearButterfly[i] AND be AND dBut )
            {
                drawBearishPattern( i, "Bearish Butterfly" );
            }

            if( BearCrab[i] AND be AND dCrab )
            {
                drawBearishPattern( i, "Bearish Crab" );
            }

            if( BearBat[i] AND be AND dBat )
            {
                drawBearishPattern( i, "Bearish Bat" );
            }

            if( BearGartley[i] AND be AND dGart )
            {
                drawBearishPattern( i, "Bearish Gartley" );
            }
        }

        if( BearHar4[i] AND flag2 )
        {
            flag1 = 1;
            flag2 = 0;
        }
    }
}
drawBearishPatterns();

function drawPivotLabels()
{
    sz = 5;

    for( i = lvb; i > fvb; i-- )
    {
        {
            if( ll[i] ) PlotTextSetFont( "LL", "Arial Black", sz, i, L[i], colorBlue, colorDefault, -25 );

            if( hl[i] ) PlotTextSetFont( "HL", "Arial Black", sz, i, L[i], colorBlue, colorDefault, -25 );

            if( db[i] ) PlotTextSetFont( "DB", "Arial Black", sz, i, L[i], colorLightBlue, colorDefault, -25 );

            if( hh[i] ) PlotTextSetFont( "HH", "Arial Black", sz, i, H[i], colorRed, colorDefault, 20 );

            if( lh[i] ) PlotTextSetFont( "LH", "Arial Black", sz, i, H[i], colorRed, colorDefault, 20 );

            if( dt[i] ) PlotTextSetFont( "DT", "Arial Black", sz, i, H[i], colorOrange, colorDefault, 20 );
        }
    }
}

if( showLabels ) drawPivotLabels();

if( showPatternDevelopmentPoints )
{
    if( bu )
    {
        PlotShapes( shapeDigit4 * BullHar4, colorBlue, O, H, 35 );
        PlotShapes( shapeSmallCircle * BullHar, ColorLightBlue, O, L, -10 );
    }

    if( be )
    {
        PlotShapes( shapeDigit4 * BearHar4, colorRed, O, L, -35 );
        PlotShapes( shapeSmallCircle * BearHar, colorOrange, O, H, 10 );
    }
}

Title = Name() +
        " | " + Now( 2 ) +
        " | " + "PIVOT TIMEFRAME: " + tfrm / 60 + " Minutes or " + tfrm / 3600 + " Hours or " + tfrm / ( 3600 * 24 ) + " Days ";