opacity

SamirOfSalem · November 21st, 2020, 10:22 AM

Hmm.. maybe we're on the wrong track. So you've changed the "width"? With a thin line you'll hardly be able to tell the difference, so the effect of opacity will be kind of visibly lost anyway. With Argb colours, the first number is the alpha, and it should have some effect. Try changing 33 to 40 and see if that works.

If that still doesn't work, a look at the NT documentation under best practices, but note that they're using .FromRGB rather than Argb:

November 21st, 2020, 11:02 AM

Thank you Samir for your help
I pieced this together. It works, but does not have the values in the menu for ease of edit. The script value would have to be edited.
AddLine(new SolidColorBrush(Color.FromRgb(192,192,192)), 0, "KenZeroLine");
Lines[0].Width = 15;
Lines[0].Opacity = 15;

SamirOfSalem · November 21st, 2020, 11:13 AM

I can't help but feel that using "Stroke" would've been a better approach. It would've let you apply color, opacity and dashstyling as we. In NinjaScript, strokes are generally easier to deal with than brushes in terms of saving into templates etc as they serialize readily.

But since you're already using brushes, see if adding this helps:

Code

Lines[0].IsOpacityVisible = true;

November 21st, 2020, 11:20 AM

SamirOfSalem

I can't help but feel that using "Stroke" would've been a better approach. It would've let you apply color, opacity and dashstyling as we. In NinjaScript, strokes are generally easier to deal with than brushes in terms of saving into templates etc as they serialize readily.

But since you're already using brushes, see if adding this helps:

Code

Lines[0].IsOpacityVisible = true;

Samir, you are talking way over my head

If you think another method is more efficient, by all means.
I just appreciate what you have done!

SamirOfSalem · November 22nd, 2020, 03:36 AM

KySt

Samir, you are talking way over my head

If you think another method is more efficient, by all means.
I just appreciate what you have done!

Hello Ky.

Sorry if I confused you. To explain, here's some sample code with comments around the relevant lines:

Code

namespace NinjaTrader.NinjaScript.Indicators
{
	public class KyLine : Indicator
	{
		protected override void OnStateChange()
		{
			if (State == State.SetDefaults)
			{
				Description									= @"Enter the description for your new custom Indicator here.";
				Name										= "KyLine";
				Calculate									= Calculate.OnBarClose;
				IsOverlay									= true;	


				PriceLevel					= 28000;
				
				AddLine(Brushes.Orange, 28000, "MyLine");
				
				//next line exposes the Opacity parameter for you
				Lines[0].IsOpacityVisible = true;
				
				//Let's say you plan to use another colour for something else, like a drawing
				//Instead of using Brushes to determine colour, then an int to set width, and a float to set opacity, and so on..
				//just use Stroke which has all these properties already
				AnotherColour = new Stroke();
				AnotherColour.Brush = Brushes.Green;
				AnotherColour.Width = 4;
				AnotherColour.Opacity = 44;
				AnotherColour.DashStyleHelper = DashStyleHelper.DashDot;
			}
			else if (State == State.Configure)
			{
			}
		}

		protected override void OnBarUpdate()
		{
			//Add your custom indicator logic here.
		}		

		[NinjaScriptProperty]
		[Range(1, double.MaxValue)]
		[Display(Name="PriceLevel", Order=1, GroupName="Parameters")]
		public double PriceLevel
		{ get; set; }
		

		[NinjaScriptProperty]
		public Stroke AnotherColour
		{get; set;}


	}
}

I hope this helps.

opacity

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