Correction to BuildRegularPolygon

[DrTomF]

Thanks for giving the BuildRegularPolygon code but to work correctly you should change the using block as follows:

 using (StreamGeometryContext ctx = geometry.Open())
        {

            double step = 2 * Math.PI / Math.Max(numSides, 3);
            Point cur = c;

            double a = Math.PI * offsetDegree / 180.0;
            for (int i = 0; i < numSides; i++, a += step)
            {
                cur.X = c.X + r * Math.Cos(a);
                cur.Y = c.Y + r * Math.Sin(a);
                if (i == 0)
                {
                    ctx.BeginFigure(cur, true /* is filled */, true /* is closed */);
                }
                else
                {
                    ctx.LineTo(cur, true /* is stroked */, false /* is smooth join */);
                }
            }
        }

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Document Details

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• ID: 6ffa9b16-059c-9281-bcd6-79f29c67a067
• Version Independent ID: 2836c340-b97b-5e9c-7d95-b12984dd281b
• Content: How to: Create a Shape Using a StreamGeometry - WPF .NET Framework
• Content Source: dotnet-desktop-guide/framework/wpf/graphics-multimedia/how-to-create-a-shape-using-a-streamgeometry.md
• Product: dotnet-framework
• Technology: dotnet-wpf
• GitHub Login: @adegeo
• Microsoft Alias: adegeo

[adegeo]

Thank you for opening this issue. I'll add it to the backlog. If you would like to contribute, you can submit a fix by editing the original article. Click on the Content Source link at the bottom of your original comment. To learn how to edit, see the Editing files in a repository article from GitHub.

Thanks again!