public LeadPoint[] ToBezierPoints()
public LeadPoint[] toBezierPoints();
public:
array<LeadPoint>^ ToBezierPoints();
def ToBezierPoints(self):
An array of LeadPoint values that contain the Bézier points.
This method is used to convert a standard curve to an array of Bézier 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 Bézier points, using System.Drawing.Graphics.DrawBeziers to draw the equivalent Bezier(s).
This sample draws a smooth closed curve on a graphics that goes through five points.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
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:\LEADTOOLS23\Resources\Images";
}
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