A boolean in OnBarUpdate() can not be called in OnRender()

[NinjaTrader_Emily]

Hello NinjaTrader_Emily!

I am still failing to complete this topic.
Let consider the bar with the arrows.

(1) Represents the Close. float val1 = chartScale.GetYByValue(Close.GetValueAt(index));
(2) Represents the Open. Float val2 = chartScale.GetYByValue(Open.GetValueAt(index));
(3) Represents the plotted indicator, beneath is the rectangle drawn in OnRender().
float yRec;
This rectangle should overlay the bar.
To draw a rectangle, we need the following function:

SharpDX.RectangleF rect = new SharpDX.RectangleF(xStart, yStart, rectWidth, rectHeight);

My goal here is to find yStart.
This is what I have done with the unexpexted result (See picture).

float space1 = val2 - yRec;
float space2 = val1 - val2;
yStart = val1- space1-space2;
​

I am failing to have the rectangle overlayed on the bar.
I would appreciate it if you could point out where I am mistaking.

Best regards,

The HeikenAshi8 indicator that I previously shared calculates the bar's width as well as coordinates for the open, high, low, and close values of the bar. It uses these values when rendering the rectangle objects onto the bars and you should be able to use these same ideas in your script:

        protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
        {
            
            if (Bars == null || ChartControl == null)
                return;            

            int barPaintWidth = Math.Max(3, 1 + 2 * ((int)ChartControl.BarWidth - 1) + 2 * shadowWidth);

            for (int idx = ChartBars.FromIndex; idx <= ChartBars.ToIndex; idx++)
            {
                if (idx - Displacement < 0 || idx - Displacement >= BarsArray[0].Count || ( idx - Displacement < BarsRequiredToPlot))
                    continue;
        
                double valH = HAHigh.GetValueAt(idx);
                double valL = HALow.GetValueAt(idx);
                double valC = HAClose.GetValueAt(idx);
                double valO = HAOpen.GetValueAt(idx);
                int x  = chartControl.GetXByBarIndex(ChartBars, idx);  //was chartControl.BarsArray[0]
                int y1 = chartScale.GetYByValue(valO);
                int y2 = chartScale.GetYByValue(valH);
                int y3 = chartScale.GetYByValue(valL);
                int y4 = chartScale.GetYByValue(valC);

                SharpDX.Direct2D1.Brush    shadowColordx     = shadowColor.ToDxBrush(RenderTarget);  // prepare for the color to use
                var xy2 = new Vector2(x, y2);
                var xy3 = new Vector2(x, y3);
                RenderTarget.DrawLine(xy2, xy3, shadowColordx, shadowWidth);    

                if (y4 == y1)
                    RenderTarget.DrawLine( new Vector2( x - barPaintWidth / 2, y1),  new Vector2( x + barPaintWidth / 2, y1), shadowColordx, shadowWidth);
                else
                {
                    if (y4 > y1)
                    {
                        SharpDX.Direct2D1.Brush    barColorDowndx     = barColorDown.ToDxBrush(RenderTarget);  // prepare for the color to use                        
                        RenderTarget.FillRectangle( new RectangleF(x - barPaintWidth / 2, y1, barPaintWidth, y4 - y1), barColorDowndx);
                        barColorDowndx.Dispose();
                    }
                    else
                    {
                        SharpDX.Direct2D1.Brush    barColorUpdx     = barColorUp.ToDxBrush(RenderTarget);  // prepare for the color to use
                        RenderTarget.FillRectangle( new RectangleF(x - barPaintWidth / 2, y4, barPaintWidth, y1 - y4),barColorUpdx);
                        barColorUpdx.Dispose();
                    }
                     RenderTarget.DrawRectangle( new RectangleF( x - barPaintWidth / 2 + (float)shadowWidth / 2,
                       Math.Min(y4, y1), barPaintWidth - (float)shadowWidth, Math.Abs(y4 - y1)), shadowColordx, shadowWidth);
                }    
                shadowColordx.Dispose();    
            }
        }        
​

For more info on vectors and chart coordinates, please refer back to the following resources I have shared with you previously:

• https://ninjatrader.com/support/help..._rendering.htm
  • See "SharpDX Vectors and Charting Coordinates"
• https://ninjatrader.com/support/help...oordinates.htm

Thank you for your time and patience.

[Stanfillirenfro]

Hello NinjaTrader_Emily !

Many thanks for your very valuable help.

I have finally fixed the problem.

Many thanks again.