Create a custom "Snap Mode"

[hurleydood]

I have a formula I want to use for snap mode but I had to create a custom drawing tool to use it.
How do I add my own Snap Mode so it can be used across all drawing tools?

[NinjaTrader_ChrisL]

Hello, thanks for writing in. Unfortunately, the snapping mode that a drawing tool uses is not overrideable.

[hurleydood]

Would you be receptive to adding a new snap mode that incorporates the Euclidean distance formula to snap to the nearest open, high, low, or close price relative to the position of the mouse pointer? I can provide the function I use to determine the nearest price I use for my drawing tool.

[NinjaTrader_ChrisL]

Hi, I will be happy to submit a feature request to our development team. Please provide as much detail as possible about the function of the new snap mode and I will also add a request of generalizing it to make the snap behavior overrideable for full customization.

Kind regards,
-ChrisL

[hurleydood]

Thanks.

First attachment is an enhancement to the "Price" snap mode. The function finds the nearest price to snap to using the distance between the pointer and every OHLC price on screen. The code is integrated into my Fibonacci drawing tool with this one line of code:

dataPoint.Price = nearest_price(chartControl, chartPanel, chartScale, dataPoint);

The second attachment is an enhancement to the "Bar And Price" snap mode. This is similar to the one above but returns both Price and Time so the points to be snapped to the nearest Bar and Price. This can easily be integrated with three lines few lines of code:

PriceAndTime p = nearest_price_and_time(chartControl, chartPanel, chartScale, dataPoint);
dataPoint.Price = p.Price;
dataPoint.Time = p.Time;

These allows users to quickly, lazily and accurately snap to prices without having to do much work.

Here's a video demonstration:

[rafaelcoisa]

hurleydood thank you sir!

[rafaelcoisa]

hurleydood, any thoughts on how to snap to the plots also?

I think it is possible to extract the logic from "AddPlotNames" indicator ( https://ninjatraderecosystem.com/use.../addplotnames/ ) to do this.