protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = NinjaTrader.Custom.Resource.NinjaScriptIndicatorDescriptionNetChangeDisplay;
Name = NinjaTrader.Custom.Resource.NinjaScriptIndicatorNameNetChangeDisplay;
Calculate = Calculate.OnPriceChange;
IsOverlay = true;
DrawOnPricePanel = true;
IsSuspendedWhileInactive = true;
Unit = PerformanceUnit.Percent;
PositiveBrush = Brushes.LimeGreen;
NegativeBrush = Brushes.Red;
Location = NetChangePosition.TopRight;
Font = new NinjaTrader.Gui.Tools.SimpleFont("Arial", 18);
}
else if (State == State.Configure)
{
instrument = Instruments[0];
}
}
protected override void OnBarUpdate()
{
if (Count - 2 == CurrentBar) //Calculate cycle on last finished, closed bar
{
string APIresultContent = "";
//Get and prepare the close data array
int seriesCount = Close.Count - 1;
List <double> closeList = new List <double>();
for (int i = 0; i <= seriesCount; i++)
{
closeList.Add(Close.GetValueAt(i));
}
//Call the WhenToTrade Cycles API endpoint POST CycleExplorer
using (var client = new HttpClient())
{
//WhenToTrade API URL
client.BaseAddress = new Uri("https://api.marketcycles.online/");
//Load the close dataset for HTTP API POST call
var contents = JsonConvert.SerializeObject(closeList.ToArray());
StringContent POSTcontent = new StringContent(contents, Encoding.UTF8, "application/json");
//POST API CALL
var response = client.PostAsync("/api/CycleExplorer?minCycleLength=" + minCycleLength + "&maxCycleLength=" + maxCycleLength + "&plotForward=" + plotForward + "&includeTimeseries=true&api_Key=" + apiKey, POSTcontent).Result;
//Check for network errors
if (response.IsSuccessStatusCode)
{
APIresultContent = response.Content.ReadAsStringAsync().Result;
}
else
{
string msg = response.Content.ReadAsStringAsync().Result;
Draw.TextFixed(this, "apierror", "API ERROR:" + msg, TextPosition.TopLeft);
return;
}
}
// Decode the cycle data from API call
var dominantCycle = JsonConvert.DeserializeObject <dynamic>(APIresultContent);
// Test for return errors from API?
string statusCode = dominantCycle.StatusCode != null ? dominantCycle.StatusCode : "";
bool error = statusCode.IndexOf("error", StringComparison.OrdinalIgnoreCase) >= 0;
if (error)
{
Draw.TextFixed(this, "apierror", "API ERROR:" + statusCode, TextPosition.TopLeft);
return;
}
//get key cycle information from return object
var cyclelength = dominantCycle.length;
var currentPrice = dominantCycle.currentPrice;
var timeSeries = dominantCycle.TimeSeries;
// DEBUG: Print return values to log
Print(dominantCycle);
// Fill cycle indicator values from timeSeries API return array (info: called just once for the full chart)
for (int i = 0; i <= CurrentBar; i++)
{
try {
Value[CurrentBar - i] = timeSeries[i + plotForward].dominantCycle;
if (timeSeries[i + plotForward].cycleHighlighter != null)
{
Values[1][CurrentBar - i] = timeSeries[i + plotForward].cycleHighlighter;
}
} catch (Exception ex)
{
//should never happen, but in case lets ignore them and only print to log
Print("Error: " + i + " - " + ex.Message);
}
}
// Plot Dominant Cycle Information
TextFixed myTF = Draw.TextFixed(this, "dctext", "Cycle Length: " + cyclelength.ToString("0") + Environment.NewLine + "Next Low: " + dominantCycle.nextlow.ToString("0.00") + Environment.NewLine + "Next Top: " + dominantCycle.nexttop.ToString("0.00") + Environment.NewLine + "Status: " + dominantCycle.phase_status, TextPosition.TopLeft);
// Plot the dot at current bar cycle position
double doty = timeSeries[CurrentBar].dominantCycle;
NinjaTrader.Gui.Tools.SimpleFont myFont = new NinjaTrader.Gui.Tools.SimpleFont("Wingdings", 12)
{
Size = 12
};
Draw.Text(this, "dot", true, "l", 0, doty, 0, Brushes.Green, myFont, TextAlignment.Center, Brushes.Transparent, Brushes.Transparent, 0);
}
}