Can fast approach of Draw.Region() be used when indicator in hosted in strategy?

[fx.practic]

Hello.

To speedup Draw.Region() I using approach like this:

public class iHostedDrawRegion : Indicator
{
    Region My_Region;
    
    protected override void OnStateChange()
    {
        if (State == State.SetDefaults)
        {
            Name = "iHostedDrawRegion";
        }
        else if( State == State.DataLoaded )
        {
            My_Region = Draw.Region(this, "Region", 0, 0, Low, High,   null, WmBrushes.LimeGreen, 70 );    
        }
    }

    protected override void OnBarUpdate()
    {
        My_Region.EndAnchor.DrawnOnBar = CurrentBar;
    } 

It works very fast and stable in indicator.

But, if to add indicator in strategy - it not draw.


Is there any way to let it work?

[fx.practic]

I found out, that My_Region.OnRender() not triggered from host strategy.

[NinjaTrader_PatrickH]

Hello fx.practic,

Thank you for your post.

I am testing the strategy and indicator here. I will look into this further and follow up when I have more details. If you have any questions in the meantime please let me know.

[fx.practic]

Thank You, Patrick, very march!

It is great tool, and I just can't work without it.
Recreation of region on each bar is very-very slow.

I made naive try to call Region.OnRender() from Strategy.OnRender(), but got exception RenderTarget == null

[fx.practic]

Hello, Patrick
Just want to say I still need it very much.
Hope You can find way.
I made some crazy experiments - but no one give good results.

[NinjaTrader_PatrickH]

Hello fx.practic,

Thank you for your patience.

Drawing in the OnStateChange function is not supported. Seeing this work in the indicator itself is not expected, but there is no expected behavior.

Even if you would expect this to be more efficient it is unfortunately not supported.

Please let me know if you have any questions.