Imports System.Drawing
Imports Bytescout.PDF

''' <summary>
''' This example demonstrates how to use the graphics clipping.
''' </summary>
Class Program

    Shared Sub Main()

        ' Create new document
        Dim pdfDocument = New Document()
        pdfDocument.RegistrationName = "demo"
        pdfDocument.RegistrationKey = "demo"

        ' If you wish to load an existing document uncomment the line below And comment the Add page section instead
        ' pdfDocument.Load(".\existing_document.pdf")

        ' Add page
        Dim page = New Page(PaperFormat.A4)
        pdfDocument.Pages.Add(page)

        Dim center = New PointF(200, 200)

        ' Create clipping path from circle
        Dim path = New Path()
        path.AddCircle(center, 100)
        page.Canvas.SetClip(path)

        ' Paint Bytescout.PDF.Rectangle over the clipping circle.
        ' Only part of the Bytescout.PDF.Rectangle intersecting the clipping circle will be drawn.
        Dim brush = New Bytescout.PDF.SolidBrush(New ColorRGB(255, 0, 0))
        page.Canvas.DrawRectangle(brush, center.X - 50, center.Y - 50, 200, 200)

        ' Save document to file
        pdfDocument.Save("result.pdf")

        ' Cleanup 
        pdfDocument.Dispose()

        ' Open document in default PDF viewer app
        Process.Start("result.pdf")

    End Sub

End Class