OnRender drawline

[luxurious_04]

Can someone help me on converting this to NT8?

Point[][] linePoints = new Point[flines][];

for (i = 0; i <flines; i++)
graphics.DrawLines(linePrices[i].Pen, linePoints[i]);

It would result a continuous line.

[NinjaTrader_ChrisL]

Hello luxurious_04,

Thank you for the post.

You will need to use SharpDX in NinjaTrader 8. For an example on how to render lines in OnRender, have a look at the "SampleCustomRender" indicator. That script demonstrates how to use SharpDX in the context of a NinjaScript, notice how the line is drawn with RenderTarget.DrawLine(...).

Here is the help guide page on using SharpDX for custom plotting:

https://ninjatrader.com/support/helpGuides/nt8/en-us/?using_sharpdx_for_custom_chart_rendering.htm

Please let me know if I can assist further.

[luxurious_04]

Ok I have check that already my problem how can I convert Points[][] linePoints or what is the equivalent of linePoints[i] in OnRender.Drawline? In OnRender.Drawline it needs to vector points while in graphics.Drawlines in NT7 it only use points of array like linePoints[i].

[NinjaTrader_ChrisL]

Hello luxurious_04,

Thank you for the reply.

The DrawLines method takes two Points. This is the equivalent of the Point array to draw.

Below is a public link to three examples of how to use DrawLine

https://csharp.hotexamples.com/examples/-/SharpDX/DrawLine/php-sharpdx-drawline-method-examples.html

Please let me know if I can assist further.

[PaulMohn]

internal static async Task Render(CompositionEngine compositionEngine, SharpDX.Direct2D1.RenderTarget renderTarget, FrameworkElement rootElement, Line line)
{
var rect = line.GetBoundingRect(rootElement).ToSharpDX();
//var fill = line.Fill.ToSharpDX(renderTarget, rect);
var stroke = await line.Stroke.ToSharpDX(renderTarget, rect);

if (stroke == null ||
line.StrokeThickness <= 0)
{
return;
}

//var layer = new Layer(renderTarget);
//var layerParameters = new LayerParameters();
//layerParameters.ContentBounds = rect;
//renderTarget.PushLayer(ref layerParameters, layer);

renderTarget.DrawLine(
new DrawingPointF(
rect.Left + (float)line.X1,
rect.Top + (float)line.Y1),
new DrawingPointF(
rect.Left + (float)line.X2,
rect.Top + (float)line.Y2),
stroke,
(float)line.StrokeThickness,
line.GetStrokeStyle(compositionEngine.D2DFactory));

//renderTarget.PopLayer();
}​

internal static async Task Render(CompositionEngine compositionEngine, SharpDX.Direct2D1.RenderTarget renderTarget, FrameworkElement rootElement, Line line)
{
var rect = line.GetBoundingRect(rootElement).ToSharpDX();
var stroke = await line.Stroke.ToSharpDX(renderTarget, rect);

if (stroke == null ||
line.StrokeThickness <= 0)
{
return;
}

var layer = line.CreateAndPushLayerIfNecessary(renderTarget, rootElement);

renderTarget.DrawLine(
new Vector2(
rect.Left + (float)line.X1,
rect.Top + (float)line.Y1),
new Vector2(
rect.Left + (float)line.X2,
rect.Top + (float)line.Y2),
stroke,
(float)line.StrokeThickness,
line.GetStrokeStyle(compositionEngine.D2DFactory));

if (layer != null)
{
renderTarget.PopLayer();
layer.Dispose();
}
}​

public void Draw(SharpDX.Direct2D1.RenderTarget d2dRenderTarget)
{
//if (DrawnParticles == null)
// return;
GameForm.solidColorBrush.Color = Colors.AliceBlue;
for (int i = 0; i < Particles.Count; i++)
{
Particles[i].Draw(d2dRenderTarget);
}
var x = Lines.ToArray();
GameForm.solidColorBrush.Color = Colors.Yellow;
for (int i = 0; i < x.Count() - 1; i++)
d2dRenderTarget.DrawLine(x[i], x[i + 1], GameForm.solidColorBrush);
}​