AddEllipseToRegion Method

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public void AddEllipseToRegion( 
   RasterRegionXForm xform,
   LeadRect rc,
   RasterRegionCombineMode combineMode
)

'Declaration
 
Public Sub AddEllipseToRegion( _
   ByVal xform As RasterRegionXForm, _
   ByVal rc As LeadRect, _
   ByVal combineMode As RasterRegionCombineMode _
)

'Usage
 
Dim instance As RasterImage
Dim xform As RasterRegionXForm
Dim rc As LeadRect
Dim combineMode As RasterRegionCombineMode
 
instance.AddEllipseToRegion(xform, rc, combineMode)

public void AddEllipseToRegion( 
   RasterRegionXForm xform,
   LeadRect rc,
   RasterRegionCombineMode combineMode
)

-(BOOL)addEllipseToRegion:(LTRasterRegionXForm*)xform 
                       rc:(LeadRect)rc 
              combineMode:(LTRasterRegionCombineMode)combineMode 
                    error:(NSError**)outError;

public void addEllipseToRegion(
  RasterRegionXForm xform, 
  LeadRect rc, 
  RasterRegionCombineMode combineMode
)

 function Leadtools.RasterImage.AddEllipseToRegion( 
   xform ,
   rc ,
   combineMode 
)

public:
void AddEllipseToRegion( 
   RasterRegionXForm^ xform,
   LeadRect rc,
   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.
rc: A LeadRect that represents the bounding rectangle that defines the ellipse.
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.

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.WinForms
Imports Leadtools.Dicom
Imports Leadtools.Drawing

Public Sub AddEllipseToRegionExample()
   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_AddEllipseToRegion.bmp")

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

   ' Add an elliptical 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 rc As LeadRect = New LeadRect(image.ImageWidth \ 4, image.ImageHeight \ 4, image.ImageWidth \ 3, image.ImageHeight \ 3)
   image.AddEllipseToRegion(xform, rc, 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.WinForms;
using Leadtools.Dicom;
using Leadtools.Drawing;

      
public void AddEllipseToRegionExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_AddEllipseToRegion.bmp");

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

   // Add an elliptical 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;

   LeadRect rc = new LeadRect(image.ImageWidth / 4, image.ImageHeight / 4, image.ImageWidth / 3, image.ImageHeight / 3);
   image.AddEllipseToRegion(xform, rc, 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();
}

RasterImageExamples.prototype.AddEllipseToRegionExample = function ( ) 
{
   Tools.SetLicense ( ) ;
   with ( Leadtools ) 
   {
      with ( Leadtools.Codecs )
      {
         var codecs = new RasterCodecs();

         var srcFileName = "Assets\\Image1.cmp";
         var destFileName = "Image1_AddEllipseToRegion.bmp";
         var image ;
         // Load the image
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
            .then(function (img) {
               image = img;

               // Add an elliptical region

               var 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;

               var rc = LeadRectHelper.create(image.imageWidth / 4, image.imageHeight / 4, image.imageWidth / 3, image.imageHeight / 3);
               image.addEllipseToRegion(xform, rc, RasterRegionCombineMode.set);

               // Draw something on the image
               var command = new Leadtools.ImageProcessing.Color.InvertCommand();
               command.run(image);

               // Save the image
               return Tools.AppLocalFolder().createFileAsync(destFileName)
            })
            .then(function (saveFile) {
               var saveStream = LeadStreamFactory.create(saveFile);
               return codecs.saveAsync(image, saveStream, RasterImageFormat.bmp, 24)
            })
            .then(function () {

               image.close();
               codecs.close();
            });
         }
   }
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;

      
public async Task AddEllipseToRegionExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = @"Assets\Image1.cmp";
   string destFileName = @"Image1_AddEllipseToRegion.bmp";

   // Load the image
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Add an elliptical 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;

   LeadRect rc = LeadRectHelper.Create(image.ImageWidth / 4, image.ImageHeight / 4, image.ImageWidth / 3, image.ImageHeight / 3);
   image.AddEllipseToRegion(xform, rc, RasterRegionCombineMode.Set);

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

   // Save the image
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   ILeadStream saveStream = LeadStreamFactory.Create(saveFile);
   await codecs.SaveAsync(image, saveStream, RasterImageFormat.Bmp, 24);

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

Target Platforms

Reference

RasterImage Class
RasterImage Members