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.NET Framework 4.5.2+

PdfGraphics.DrawBezier(Pen, PointF, PointF, PointF, PointF) Method

Draws a Bezier curve specified by four points (in the world coordinate system).

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v22.2.Drawing.dll

NuGet Package: DevExpress.Pdf.Drawing

Declaration

public void DrawBezier(
    Pen pen,
    PointF pt1,
    PointF pt2,
    PointF pt3,
    PointF pt4
)

Parameters

Name Type Description
pen Pen

A Pen object that specifies the color, width, and style of the curve.

pt1 PointF

A Point structure that specifies the start point of the curve.

pt2 PointF

A Point structure that specifies the first control point of the curve.

pt3 PointF

A Point structure that specifies the second control point of the curve.

pt4 PointF

A Point structure that specifies the end point of the curve.

Remarks

The Bezier curve starts from the first point and ends at the fourth point. The second and third points are control points that specify the shape of the curve. To draw a Bezier curve, pass the pen parameter and point parameters (pt1, pt2, pt3, pt4) to the DrawBezier method.

To draw a shape on the PDF page, use one of the following methods:

PdfGraphics.AddToPageForeground, PdfGraphics.AddToPageBackground
These methods allow you to draw content on an existing page.
PdfDocumentProcessor.RenderNewPage
Draws content on a new page.

The code sample below draws a Bezier curve using the four specified points.

Draw a Bezier Curve

using DevExpress.Pdf;
using System.Drawing;
//...

using (PdfDocumentProcessor processor = new PdfDocumentProcessor())
{
    processor.CreateEmptyDocument();
    PdfPage page = processor.AddNewPage(PdfPaperSize.A4);
        using (PdfGraphics graphics = processor.CreateGraphics())
        {
            // Draw a Bezier curve.
            using (var pen = new Pen(Color.Red, 5))
            graphics.DrawBezier(pen, new PointF(100, 750), 
                new PointF(170, 100), new PointF(300, 500), 
                new PointF(400, 100));

            // Add graphics content to the document page.
            graphics.AddToPageForeground(page, 72, 72);
        }
    processor.SaveDocument("out2.pdf");
}
Process.Start("out.pdf");
See Also