//@version=4
study(title="zigzag pivot high pivot low", overlay=true, max_lines_count=500, max_labels_count=500)

var dirUp = false
var lastLow = 0.0
var lastHigh = 0.0
var timeLow = bar_index
var timeHigh = bar_index
var line li = na

if dirUp
if pivotlow(1,0)
lastLow := low
timeLow := bar_index
line.delete(li)
li := line.new(timeHigh, lastHigh, timeLow, lastLow, xloc.bar_index, color=dirUp ? color.yellow : color.blue, width=2, style=line.style_solid)
if pivothigh(1,0)
lastHigh := high
timeHigh := bar_index
dirUp := false
li := line.new(timeHigh, lastHigh, timeLow, lastLow, xloc.bar_index, color=dirUp ? color.yellow : color.blue, width=2, style=line.style_solid)

if not dirUp
if pivothigh(1,0)
lastHigh := high
timeHigh := bar_index
line.delete(li)
li := line.new(timeHigh, lastHigh, timeLow, lastLow, xloc.bar_index, color=dirUp ? color.yellow : color.blue, width=2, style=line.style_solid)
if pivotlow(1,0)
lastLow := low
timeLow := bar_index
dirUp := true
li := line.new(timeHigh, lastHigh, timeLow, lastLow, xloc.bar_index, color=dirUp ? color.yellow : color.blue, width=2, style=line.style_solid)

using System;
using System.Drawing;
using TradingPlatform.BusinessLayer;

namespace Zigzag
{
public class Zigzag : Indicator
{
public Zigzag()
: base()
{
Name = "Zigzag";
Description = "Sample ZigZag drawing";
SeparateWindow = false;
}

protected override void OnInit()
{
}

protected override void OnUpdate(UpdateArgs args)
{
}

public override void OnPaintChart(PaintChartEventArgs args)
{
var gr = Graphics.FromHdc(args.Hdc);

var converter = this.CurrentChart.Windows[args.WindowIndex].CoordinatesConverter;
int x1, xprev, y1, yprev;
int max = this.Count - 2;
bool trendingup = true;
bool pivotpoint = false;
int previouspivot = max;
Pen pen;

for (int i = max; i >= 0; i--)
{
double hprice0 = this.High(offset: i);
double lprice0 = this.Low(offset: i);
double hprice1 = this.High(offset: i + 1);
double lprice1 = this.Low(offset: i + 1);
if (trendingup)
{
if (hprice0 < hprice1)
{
pivotpoint = true;
trendingup = false;
}
}
else
{
if (lprice0 > lprice1)
{
pivotpoint = true;
trendingup = true;
}
}
if (i == 0)
{
pivotpoint = true;
trendingup = !trendingup;
hprice1 = this.High(offset: 0);
lprice1 = this.Low(offset: 0);
i -= 1;
}
if (pivotpoint)
{
DateTime t1 = new DateTime(ticks: (this.HistoricalData[i + 1].TicksLeft + this.HistoricalData[i + 1].TicksRight + 1) / 2, DateTimeKind.Utc);
DateTime tprevious = new DateTime(ticks: (this.HistoricalData[previouspivot].TicksLeft + this.HistoricalData[previouspivot].TicksRight + 1) / 2, DateTimeKind.Utc);
x1 = (int)converter.GetChartX(t1);
xprev = (int)converter.GetChartX(tprevious);

if (trendingup)
{
y1 = (int)converter.GetChartY(lprice1);
double priceprev = this.High(offset: previouspivot);
yprev = (int)converter.GetChartY(priceprev);
pen = new Pen(Color.Green, 2);
}
else
{
y1 = (int)converter.GetChartY(hprice1);
double priceprev = this.Low(offset: previouspivot);
yprev = (int)converter.GetChartY(priceprev);
pen = new Pen(Color.YellowGreen, 2);

}
gr.DrawLine(pen, x1, y1, xprev, yprev);
previouspivot = i + 1;
pivotpoint = false;
}
}
}
}
}