ToBezierPoints Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public LeadPoint[] ToBezierPoints()

'Declaration
 
Public Function ToBezierPoints() As LeadPoint()

'Usage
 
Dim instance As RasterCurve
Dim value() As LeadPoint
 
value = instance.ToBezierPoints()

public LeadPoint[] ToBezierPoints()

 function Leadtools.RasterCurve.ToBezierPoints()

public:
array<LeadPoint>^ ToBezierPoints();

Return Value

An array of LeadPoint values that contain the Bezier points.

This method is used to convert a standard curve to an array of Bezier control points. A standard curve (RasterCurveType.Standard) is defined by the current RasterCurve. The standard curve passes through all of the points in the Points collection, and is continuous at each point. This method can be used to draw a curve by converting it to an array of Bezier points, using System.Drawing.Graphics.DrawBeziers to draw the equivalent Bezier(s).

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub ToBezierPointsExample()
      ' Define the curve
      Dim curve As RasterCurve = New RasterCurve()

      curve.Points.Add(New LeadPoint(130, 130))
      curve.Points.Add(New LeadPoint(130, 300))
      curve.Points.Add(New LeadPoint(230, 230))
      curve.Points.Add(New LeadPoint(175, 175))
      curve.Points.Add(New LeadPoint(230, 130))

      curve.Type = RasterCurveType.Standard
      curve.FillMode = LeadFillMode.Winding
      curve.Tension = 0.5
      curve.Close = RasterCurveClose.Close

      ' convert this curve into bezier points
      Dim bezierPoints As LeadPoint() = curve.ToBezierPoints()

      ' Draw this curve on a bitmap
      Using btmp As New System.Drawing.Bitmap(400, 400)
         Using g As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(btmp)
            g.FillRectangle(System.Drawing.Brushes.White, New System.Drawing.Rectangle(0, 0, 400, 400))

            ' Convert the LeadPoint array to a Point array
            Dim pts(bezierPoints.Length - 1) As System.Drawing.Point
            For i As Integer = 0 To bezierPoints.Length - 1
               pts(i) = New System.Drawing.Point(bezierPoints(i).X, bezierPoints(i).Y)
            Next

            g.DrawBeziers(System.Drawing.Pens.Black, pts)
         End Using

         ' save this image to disk
         Dim fileName As String = Path.Combine(LEAD_VARS.ImagesDir, "ToBezierPoints.bmp")
         btmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Bmp)

      End Using
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void ToBezierPointsExample()
   {
      // Define the curve
      RasterCurve curve = new RasterCurve();

      curve.Points.Add(new LeadPoint(130, 130));
      curve.Points.Add(new LeadPoint(130, 300));
      curve.Points.Add(new LeadPoint(230, 230));
      curve.Points.Add(new LeadPoint(175, 175));
      curve.Points.Add(new LeadPoint(230, 130));

      curve.Type = RasterCurveType.Standard;
      curve.FillMode = LeadFillMode.Winding;
      curve.Tension = 0.5;
      curve.Close = RasterCurveClose.Close;

      // convert this curve into bezier points
      LeadPoint[] bezierPoints = curve.ToBezierPoints();

      // Draw this curve on a bitmap
      using(System.Drawing.Bitmap btmp = new System.Drawing.Bitmap(400, 400))
      {
         using(System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(btmp))
         {
            g.FillRectangle(System.Drawing.Brushes.White, new System.Drawing.Rectangle(0, 0, 400, 400));

            // Convert the LeadPoint array to a Point array
            System.Drawing.Point[] pts = new System.Drawing.Point[bezierPoints.Length];
            for(int i = 0; i < bezierPoints.Length; i++)
            {
               pts[i] = new System.Drawing.Point(bezierPoints[i].X, bezierPoints[i].Y);
            }

            g.DrawBeziers(System.Drawing.Pens.Black, pts);
         }

         // save this image to disk
         string fileName = Path.Combine(LEAD_VARS.ImagesDir, "ToBezierPoints.bmp");
         btmp.Save(fileName, System.Drawing.Imaging.ImageFormat.Bmp);
      }
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

RasterCurve Class
RasterCurve Members