_SECTION_BEGIN( "XY-Rotation Chart" );
 
_N( base = ParamStr( "Base", "IHSG" ) );
_N( list = ParamStr( "Symbols", "IDXBASIC,IDXCYCLIC,IDXENERGY,IDXFINANCE,IDXHEALTH,IDXINDUST,IDXINFRA,IDXNONCYC,IDXPROPERT,IDXTECHNO,IDXTRANS" ) );
tbar = Param( "Trailing Bar", 12, 1, 100, 1 );
 
EnableTextOutput( False );
GfxSetOverlayMode( 2 );
 
pxl = Status( "pxchartleft" );
pxr = Status( "pxchartright" );
pxt = Status( "pxcharttop" );
pxb = Status( "pxchartbottom" );
pxw = ( pxr - pxl ) / 2;
pxh = ( pxb - pxt ) / 2;
xm = pxl + pxw;
ym = pxt + pxh;
 
GfxMoveTo( pxl, ym ); 
GfxLineTo( pxr, ym );
GfxMoveTo( xm, pxt );
GfxLineTo( xm, pxb );
 
function getrs ( sc, t )
{
    bc = Foreign( base, "C" );
    sbr = sc / bc;
 
    rs1 = MA( sbr, 12 );
    rs2 = MA( sbr, 26 );
    rs = 100 * ( ( rs1 - rs2 ) / rs2 + 1 );
 
    rm1 = MA( rs, 1 );
    rm2 = MA( rs, 9 );
    rm = 100 * ( ( rm1 - rm2 ) / rm2 + 1 );
 
    return IIf( t, rs , rm ) - 100;
}
 
function drawpos ( x, y, sym, text )
{
    rsl = VarGet( "rsl" );
    rsh = VarGet( "rsh" );
    rml = VarGet( "rml" );
    rmh = VarGet( "rmh" );
 
    xx = pxl + pxw + x * ( pxw / ( Max( rsh, -rsl ) * 1.10 ) );
    yy = pxb - pxh - y * ( pxh / ( Max( rmh, -rml ) * 1.10 ) );
 
    xp = Nz( VarGet( "xp" + sym ), xx );
    yp = Nz( VarGet( "yp" + sym ), yy );
 
    VarSet( "xp" + sym, xx );
    VarSet( "yp" + sym, yy );
 
    GfxMoveTo( xp, yp );
    GfxLineTo( xx, yy );
 
    GfxCircle( xx, yy, IIf( text == "", 2, 4 ) );
 
    if ( text != "" ) GfxTextOut( sym, xx + 6 , yy - 3 );
}
 
for ( i = 0; ( sym = StrExtract( list, i ) ) != ""; i++ )
{
    SetForeign( sym );
 
    rs = getrs( C, 1 );
    rm = getrs( C, 0 );
 
    for ( ii = BarCount - tbar; ii < BarCount; ii++ )
    {
        rs_ = rs[ ii ];
        rm_ = rm[ ii ];
 
        rsh = Nz( VarGet( "rsh" ), rs_ );
        if ( rs_ >= rsh )
            VarSet( "rsh", rs_ );
 
        rsl = Nz( VarGet( "rsl" ), rs_ );
        if ( rs_ <= rsl )
            VarSet( "rsl", rs_ );
 
        rmh = Nz( VarGet( "rmh" ), rm_ );
        if ( rm_ >= rmh )
            VarSet( "rmh", rm_ );
 
        rml = Nz( VarGet( "rml" ), rm_ );
        if ( rm_ <= rml )
            VarSet( "rml", rm_ );
    }
 
    RestorePriceArrays( True );
}
 
for ( i = 0; ( sym = StrExtract( list, i ) ) != ""; i++ )
{
    SetForeign( sym );
 
    rs = getrs( C, 1 );
    rm = getrs( C, 0 );
 
    for ( ii = BarCount - tbar; ii < BarCount; ii++ )
    {
        drawpos( rs[ ii ], rm[ ii ], sym, WriteIf( ii == BarCount - 1, sym, "" ) );
    }
 
    RestorePriceArrays( True );
}
 
_SECTION_END();