PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Thu Feb 04, 2016 4:53 pm 

Joined: Thu Feb 04, 2016 4:35 pm
Posts: 2
For me the XGraphicsPath.Widen seems to be broken.

Given this original path:
pdfsharp_original.jpg [ 11.56 KiB | Viewed 1626 times ]

I tried with XGraphicsPath.Widen(...) on both, Pdfsharp 1.32.3057 as well as 1.50.4000-beta3b.
Used code can be found at the end of this post.

On Pdfsharp 1.32.3057 the result looks as follows:
pdfsharp_stable.jpg [ 33.99 KiB | Viewed 1626 times ]

On Pdfsharp 1.50.4000-beta3b the widen method seems to do nothing, the result looks as follows:

Here is the code I used:
        private XPoint cmPoint(double x, double y)
            return new XPoint(

        private XGraphicsPath getMyPath2()
            XGraphicsPath path = new XGraphicsPath();
            path.AddLine(cmPoint(0, 0), cmPoint(5, 2));
            path.AddLine(cmPoint(5, 2), cmPoint(10, 0));
            path.AddLine(cmPoint(10, 0), cmPoint(10, 10));
            path.AddLine(cmPoint(10, 10), cmPoint(0, 10));

            return path;

        private void button3_Click(object sender, RoutedEventArgs e)
            // Create a temporary file
            string filename = String.Format("{0}_tempfile.pdf", Guid.NewGuid().ToString("D").ToUpper());

            XPen penBlack = new XPen(XColors.Black, 1);
            XPen penRed = new XPen(XColors.Red, 1);

            PdfDocument pdfDocument = new PdfDocument();

            PdfPage page = pdfDocument.AddPage();
            page.Size = PdfSharp.PageSize.A1;

            XGraphics gfx = XGraphics.FromPdfPage(page);

            //give us some space to the left and top
            gfx.TranslateTransform(XUnit.FromCentimeter(3), XUnit.FromCentimeter(3));

            XGraphicsPath path = getMyPath2();
            gfx.DrawPath(penBlack, path);

            path.Widen(new XPen(XColors.Red, XUnit.FromCentimeter(1)));
            gfx.DrawPath(penRed, path);

            // Save the pdfDocument...
            // ...and start a viewer

Expected result:
The result of Pdfsharp 1.32.3057, but without these weird triangles.

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