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

C#
Visual Basic
WinRT C#
Java
Objective-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
)

public void addCurveToRegion(
  RasterRegionXForm xform, 
  LeadPoint[] pts, 
  float tension, 
  Path.FillType 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 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.

This example will load an image, adds a curve region to it, run the InvertCommand to show the affected area before saving the image back to disk.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Controls
Imports Leadtools.Dicom
Imports Leadtools.Drawing
Imports Leadtools.Svg

      
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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;
using Leadtools.Drawing;
using Leadtools.Controls;
using Leadtools.Svg;

      
public void AddCurveToRegionExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
   string destFileName =Path.Combine(ImagesPath.Path, "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();
}

Target Platforms

Reference

RasterImage Class
RasterImage Members
Overload List