TFastLine segments

TeeChart VCL for Borland/CodeGear/Embarcadero RAD Studio, Delphi and C++ Builder.
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bdw
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TFastLine segments

Post by bdw » Thu Dec 08, 2016 4:28 am

Hi,

Is it possible to draw line segments which aren't connected.

For example connect 1,1 to 2,2 then have another segment 3,3 to 4,4 with no connection between 2,2 to 3,3 ?

Regards, Brett.

Yeray
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Re: TFastLine segments

Post by Yeray » Mon Dec 12, 2016 9:35 am

Hello,

You could play with Null Points. Note a line segment is not drawn if the origin or the destination points are null.
So, in the case you described, you could add a null point at x=2.5 and the segments from x=2 to 2.5 and from x=2.5 to 3 won't be drawn:

Code: Select all

procedure TForm1.FormCreate(Sender: TObject);
begin
  Series1.AddXY(1,1);
  Series1.AddXY(2,2);
  Series1.AddXY(3,3);
  Series1.AddXY(4,4);
  Series1.AddNullXY(2.5,0);
end;
Best Regards,
ImageYeray Alonso
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bdw
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Re: TFastLine segments

Post by bdw » Mon Dec 19, 2016 11:27 pm

As always thanks Yeray, worked like a charm once I figured the DoNotPaint flag was also required when doing it manually.

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