PdfGraphics.DrawBeziers(DXPen, PointF[]) Method

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

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v23.2.Drawing.dll

NuGet Package: DevExpress.Pdf.Drawing

Declaration

C#

public void DrawBeziers(
    DXPen pen,
    PointF[] points
)

VB.NET

Public Sub DrawBeziers(
    pen As DXPen,
    points As PointF()
)

Parameters

Name	Type	Description
pen	DXPen	A DXPen object that specifies the color, width, and style of the curve.
points	PointF[]	An array of PointF structures that specifies points (in world coordinate system) by which you can draw a series of Bezier curves.

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 DrawBeziers 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.

C#

using DevExpress.Pdf;
using System.Drawing;
using DevExpress.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 DXPen(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");

VB.NET

Imports DevExpress.Pdf
Imports System.Drawing
Imports DevExpress.Drawing
'...

Using processor As New PdfDocumentProcessor()
    processor.CreateEmptyDocument()
    Dim page As PdfPage = processor.AddNewPage(PdfPaperSize.A4)
        Using graphics As PdfGraphics = processor.CreateGraphics()
            ' Draw a Bezier curve.
            Using pen As New DXPen(Color.Red, 5)
            graphics.DrawBezier(pen, New PointF(100, 750), 
        New PointF(170, 100), New PointF(300, 500), 
        New PointF(400, 100))
            End Using

            ' Add graphics content to the document page.
            graphics.AddToPageForeground(page, 72, 72)
        End Using
    processor.SaveDocument("out2.pdf")
End Using
Process.Start("out.pdf")