Draw Rectangle with Fibonacci tools on chart

[enric_69]

Dear friends:
I am trying to draw a rectangle with SharpDX.RectangleF, like the photo, when I open the fibo tools, but I have problems with the X, Y coordinates and price levels.
Would anyone know how I could intertwine XY coordinates with price levels?
If you have a better idea you can say it.
Thank you

[NinjaTrader_Jim]

Hello enric_69,

Thanks for opening the thread and welcome to our support forums!

There are some methods that you can use to get X and Y pixel coordinates from ChartScale and ChartControl in OnRender(). I will provide links below:

ChartScale.GetYByValue() - https://ninjatrader.com/support/help...etybyvalue.htm

ChartControl.GetXByBarIndex() - https://ninjatrader.com/support/help...bybarindex.htm

Please let me know if I can be of further help.

[enric_69]

Hello enric_69,

Thanks for opening the thread and welcome to our support forums!

There are some methods that you can use to get X and Y pixel coordinates from ChartScale and ChartControl in OnRender(). I will provide links below:

ChartScale.GetYByValue() - https://ninjatrader.com/support/help...etybyvalue.htm

ChartControl.GetXByBarIndex() - https://ninjatrader.com/support/help...bybarindex.htm

Please let me know if I can be of further help.

Thanks Jim for your quick response.
It's hard to explain my problem in writing, so I've left you a little video.
I hope you can help me
regards
Enric

I let the video here: https://we.tl/W6u6NB9WIY

[NinjaTrader_Jim]

Hello Enric,

Thanks for the reply and the video.

Observing how you have drawn the square, this looks like you have modified a drawing tool to place the square. Without the complete code, I can only guess, but it looks like there is an anchor where the lines are drawn and the square appears to be a set number of pixels away from your lines. When you adjust the scale, the square's distance remains the same in relativity to the lines used to draw it, and it then gets offset from the price level you placed it at.

As you are saying you want to use SharpDX.RectangleF, I would suggest to modify the SampleCustomRender indicator as it uses the same method to draw rectangles. I would still suggest to use the aforementioned methods to get the pixel values at a certain price.

When you have been able to draw the rectangle at a designated price through the SampleCustomRender indicator, I would then suggest to modify your drawing object to draw a rectangle at a specific price level.

Another possible solution could be to modify your drawing object so the square's "offset" from the lines is a variable that changes based on the charts scale. As a rough example, you could use OnCalculateMinMax() to detect when charts scale has changed. Then, you could subtract the MinValue from the MaxValue to get a value that you could use to scale the square's distance from the anchor lines when the Chart's scale changes.

OnCalculateMinMax() - https://ninjatrader.com/support/help...lateminmax.htm

MinValue - https://ninjatrader.com/support/help...s/minvalue.htm

MaxValue - https://ninjatrader.com/support/help...s/maxvalue.htm

Please let me know if I may be of further help.