How do I draw a rectangle around the bid and ask low of a volumetric bar?

[walley]

I've tried using the below, but get the red rectangle in the attached image. The yellow is what I would like to see.

Draw.Rectangle(this, "rect" + CurrentBar, 1, Low[0] + 0.125, 0, Low[0] - 0.125, Brushes.Red);

I also was playing around with SharpDX.RectangleF, but couldn't figure out how to do it with it.

float x = chartControl.GetXByBarIndex(ChartBars, CurrentBar);

SharpDX.RectangleF rectangleF = new SharpDX.RectangleF(x, x, 10, 10);
SharpDX.Direct2D1.SolidColorBrush brush = new SharpDX.Direct2D1.SolidColorBrush(RenderTarget, SharpDX.Color.Blue);
RenderTarget.DrawRectangle(rectangleF, brush);​

[NinjaTrader_BrandonH]

Hello wally,

Thanks for your note.

The Draw.Rectangle method is designed to draw a rectangle from the middle of one bar to the middle of the next bar.

You would need to use SharpDX in OnRender() along with your own custom logic to draw a rectangle in the specific section highlighted in yellow in the screenshot you shared.

The SampleCustomRender indicator script that comes default with NinjaTrader demonstrates how RenderTarget.DrawRectangle() could be used in a NinjaScript.

Also, see the help guide documentation linked below for more information.

Using SharpDX for custom chart rendering: https://ninjatrader.com/support/help..._rendering.htm
RenderTarget.DrawRectangle(): https://ninjatrader.com/support/help...wrectangle.htm

Please let me know if I may assist further.

[walley]

Thanks. For reference, the below is a snippet of what I ended up doing.

            float close = chartScale.GetYByValue(Bars.GetClose(Bars.Count - 1));
            float nextCloseTick = chartScale.GetYByValue(Bars.GetClose(Bars.Count - 1) - .25);
            float barWidth = chartControl.GetBarPaintWidth(chartControl.BarsArray[0]);
            float height = Convert.ToSingle(close - nextCloseTick);
            float width = Convert.ToSingle(barWidth - barWidth * .06);
            float x = chartControl.GetXByBarIndex(ChartBars, CurrentBar) - (width / 2);​

            float x = chartControl.GetXByBarIndex(ChartBars, CurrentBar) - ((width / 2));
            // Draw Low
            //float y = Convert.ToSingle(chartScale.GetYByValue(Bars.GetLow(Bars.Count - 1) - .125));
            // Draw High
            float y = Convert.ToSingle(chartScale.GetYByValue(Bars.GetHigh(Bars.Count - 1) - .125));

            SharpDX.RectangleF rect = new SharpDX.RectangleF(x, y, width, height);
            SharpDX.Direct2D1.SolidColorBrush brush = new SharpDX.Direct2D1.SolidColorBrush(RenderTarget, SharpDX.Color.Red);​​

[walley]

The current snippet draws the triangle on the current bar and does not save when a new bar is formed. Is there a way to save the rectangle on the bar when a new bar is formed? I know that tags are included with Draw.Rectangle, but I'm not finding anything similar with SharpDX..

[NinjaTrader_ChelseaB]

Hello walley,

The logic would need to call RenderTarget.DrawRectangle() twice, one for each of the two rectangles.

You could save these in an array if you want to refer back to these objects after they have been created.

Below are links to scripts that may give you some ideas.

https://ninjatraderecosystem.com/user-app-share-download/jtrealstats-realtime-level-ii-tick-volume/

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/97796-how-to-anchor-grid-control-to-chart?p=786906#post786906