AddCurveToRegion(RasterRegionXForm,LeadPoint[],Single,LeadFillMode,RasterRegionCombineMode) Method

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

public void AddCurveToRegion( 
   RasterRegionXForm xform,
   LeadPoint[] pts,
   float tension,
   LeadFillMode fillMode,
   RasterRegionCombineMode combineMode
)

'Declaration
 
Public Overloads Sub AddCurveToRegion( _
   ByVal xform As RasterRegionXForm, _
   ByVal pts() As LeadPoint, _
   ByVal tension As Single, _
   ByVal fillMode As LeadFillMode, _
   ByVal combineMode As RasterRegionCombineMode _
)

'Usage
 
Dim instance As RasterImage
Dim xform As RasterRegionXForm
Dim pts() As LeadPoint
Dim tension As Single
Dim fillMode As LeadFillMode
Dim combineMode As RasterRegionCombineMode
 
instance.AddCurveToRegion(xform, pts, tension, fillMode, combineMode)

public void AddCurveToRegion( 
   RasterRegionXForm xform,
   LeadPoint[] pts,
   float tension,
   LeadFillMode fillMode,
   RasterRegionCombineMode combineMode
)

 function Leadtools.RasterImage.AddCurveToRegion(RasterRegionXForm,LeadPoint[],Single,LeadFillMode,RasterRegionCombineMode)( 
   xform ,
   pts ,
   tension ,
   fillMode ,
   combineMode 
)

public:
void AddCurveToRegion( 
   RasterRegionXForm^ xform,
   array<LeadPoint>^ pts,
   float tension,
   LeadFillMode fillMode,
   RasterRegionCombineMode combineMode
)

Parameters

xform

RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.

pts

Array of LeadPoint objects. The points in the array must be in the order in which the vertices of the polygon are connected. To create the line that closes the polygon, the last point in the array is connected to the first point of the array.

tension

A value that specifies the amount that the curve bends between control points. Values greater than 1 produce unpredictable results.

fillMode

Indicates how to handle complex crossing lines.

Value	Meaning
LeadFillMode.Winding	All pixels that are inside the resulting exterior lines are in the region.
LeadFillMode.Alternate	The region includes the area between odd-numbered and even-numbered polygon sides on each scan line.

Fill Mode

combineMode

The action to take regarding the existing image region, if one is defined.

To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to RasterRegionCombineMode.

For more information, refer to Creating a Region.

For more information, refer to Saving A Region.

For more information, refer to Working with the Existing Region.

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

Public Sub AddCurveToRegionExample()
      Dim codecs As RasterCodecs = New RasterCodecs()

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddCurveToRegion.bmp")

      ' Load the image
      Dim image As RasterImage = codecs.Load(srcFileName)

      ' Add a curve region

      Dim xform As RasterRegionXForm = New RasterRegionXForm()
      xform.ViewPerspective = RasterViewPerspective.TopLeft
      xform.XOffset = 0
      xform.YOffset = 0
      xform.XScalarDenominator = 1
      xform.XScalarNumerator = 1
      xform.YScalarDenominator = 1
      xform.YScalarNumerator = 1

      Dim pts As LeadPoint() = {New LeadPoint(30, 30), New LeadPoint(30, 200), New LeadPoint(130, 130), New LeadPoint(75, 75), New LeadPoint(130, 30)}

      image.AddCurveToRegion(xform, pts, 0.5F, LeadFillMode.Winding, RasterRegionCombineMode.Set)

      ' Draw something on the image
      Dim command As InvertCommand = New InvertCommand()
      command.Run(image)

      ' Save the image
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)

      image.Dispose()
      codecs.Dispose()
   End Sub

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

public void AddCurveToRegionExample()
   {
      RasterCodecs codecs = new RasterCodecs();

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName =Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddCurveToRegion.bmp");

      // Load the image
      RasterImage image = codecs.Load(srcFileName);

      // Add a curve region

      RasterRegionXForm xform = new RasterRegionXForm();
      xform.ViewPerspective = RasterViewPerspective.TopLeft;
      xform.XOffset = 0;
      xform.YOffset = 0;
      xform.XScalarDenominator = 1;
      xform.XScalarNumerator = 1;
      xform.YScalarDenominator = 1;
      xform.YScalarNumerator = 1;

      LeadPoint[] pts =
      {
         new LeadPoint(30, 30),
         new LeadPoint(30, 200),
         new LeadPoint(130, 130),
         new LeadPoint(75, 75),
         new LeadPoint(130, 30)
      };

      image.AddCurveToRegion(xform, pts, 0.5f, LeadFillMode.Winding, RasterRegionCombineMode.Set);

      // Draw something on the image
      InvertCommand command = new InvertCommand();
      command.Run(image);

      // Save the image
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);

      image.Dispose();
      codecs.Dispose();
   }

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

RasterImage Class
RasterImage Members
Overload List