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RasterCurve Class
See Also  Members   Example 
Leadtools Namespace : RasterCurve Class



Defines a curve.

Object Model


Syntax

Visual Basic (Declaration)  
Public Class RasterCurve
Visual Basic (Usage) Copy Code
Dim instance As RasterCurve
C#  
public class RasterCurve
C++/CLI  
public ref class RasterCurve

Example

This sample creates a smooth region that goes through five points, and inverts the region.

Visual Basic Copy Code
Public Sub RasterCurveExample()
 RasterCodecs.Startup()
 Dim codecs As RasterCodecs = New RasterCodecs()

 ' load an image
 Dim srcFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp"
 Dim destFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Image1_curveinverted.bmp"
 Dim image As RasterImage = codecs.Load(srcFileName)

 ' create a new curve object
 Dim curve As RasterCurve = New RasterCurve()

 ' define the the curve
 curve.Points.Add(New Point(30, 30))
 curve.Points.Add(New Point(30, 200))
 curve.Points.Add(New Point(130, 130))
 curve.Points.Add(New Point(75, 75))
 curve.Points.Add(New Point(130, 30))

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

 image.AddCurveToRegion(Nothing, curve, RasterRegionCombineMode.Set)

 ' do something with the region
 Dim cmd As InvertCommand = New InvertCommand()
 cmd.Run(image)

 ' save the image back to disk
 codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)

 ' Cleanup
 image.Dispose()
 RasterCodecs.Shutdown()
      End Sub
C# Copy Code
public void RasterCurveExample() 
{ 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // load an image 
   string srcFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp"; 
   string destFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1_curveinverted.bmp"; 
   RasterImage image = codecs.Load(srcFileName); 
 
   // create a new curve object 
   RasterCurve curve = new RasterCurve(); 
 
   // define the the curve 
   curve.Points.Add(new Point(30, 30)); 
   curve.Points.Add(new Point(30, 200)); 
   curve.Points.Add(new Point(130, 130)); 
   curve.Points.Add(new Point(75, 75)); 
   curve.Points.Add(new Point(130, 30)); 
 
   curve.Type = RasterCurveType.Standard; 
   curve.FillMode = FillMode.Winding; 
   curve.Tension = 0.5; 
   curve.Close = RasterCurveClose.Close; 
 
   image.AddCurveToRegion(null, curve, RasterRegionCombineMode.Set); 
 
   // do something with the region 
   InvertCommand cmd = new InvertCommand(); 
   cmd.Run(image); 
 
   // save the image back to disk 
   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); 
 
   // Cleanup 
   image.Dispose(); 
   RasterCodecs.Shutdown(); 
}

Remarks

The RasterCurve class defines the curve to be used with the RasterImage.AddCurveToRegion(RasterRegionXForm,RasterCurve,RasterRegionCombineMode) method to draw a curve using an array of Point objects. The ToBezierPoints method is used to convert a curve to a Bezier. The RasterCurve class can define two types of curves, RasterCurveType.Standard and RasterCurveType.Bezier.

Inheritance Hierarchy

System.Object
   Leadtools.RasterCurve

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also