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Bug 1625 - Scrolling GradientRelative=false Area chart produces erroneous gradient
Summary: Scrolling GradientRelative=false Area chart produces erroneous gradient
Status: RESOLVED FIXED
Alias: None
Product: .NET TeeChart
Classification: Unclassified
Component: Series (show other bugs)
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Steema Issue Manager
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-09-08 05:11 EDT by christopher ireland
Modified: 2016-09-26 11:04 EDT (History)
0 users

See Also:
Chart Series: ---
Delphi / C++ Builder RAD IDE Version:

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Description christopher ireland 2016-09-08 05:11:36 EDT 
Code to reproduce (scroll the chart upwards):

    Random random = new Random();
    private void InitializeChart()
    {
      tChart1.CurrentTheme = ThemeType.Opera;
      tChart1.Aspect.View3D = false;

      Area area = new Area();
      area.Color = Color.GreenYellow;
      area.AreaBrush.Gradient.StartColor = Color.GreenYellow;
      area.AreaBrush.Gradient.MiddleColor = Color.BlueViolet;
      area.AreaBrush.Gradient.EndColor = Color.Crimson;
      area.AreaBrush.Gradient.UseMiddle = true;
      area.AreaBrush.Gradient.Visible = true;
      area.AreaBrush.Gradient.Transparency = 20;
      area.GradientRelative = false;
      area.LinePen.Visible = false;
      area.AreaLines.Visible = false;
      //area.Origin = 0;
      //area.UseOrigin = true;

      var x = 0d;
      for (int i = 0; i <= 30; i++)
      {
        x = random.NextDouble() * 10 + x;
        double y = random.NextDouble();
        bool flag = random.NextDouble() < 0.5;
        y = flag ? y : y * -1;
        area.Add(x, y);
      }

      tChart1.Series.Add(area);
    }