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AddRoundRectangleToRegion Method


Creates or updates the image region by adding a rounded rectangular region.

Public Sub AddRoundRectangleToRegion( _ 
   ByVal xform As RasterRegionXForm, _ 
   ByVal rc As LeadRect, _ 
   ByVal ellipse As LeadSize, _ 
   ByVal combineMode As RasterRegionCombineMode _ 
public void addRoundRectangleToRegion( 
  RasterRegionXForm xform,  
  LeadRect rc,  
  LeadPoint ellipse,  
  RasterRegionCombineMode combineMode 


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.

A LeadRect that specifies the bounding rectangle of the region.

Specifies the width and height of the ellipse that describes the arc of the rounded corners.

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 round rectangle region to it, run the InvertCommand to show the affected area before saving the image back to disk.

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 LeadtoolsExamples.Common; 
using Leadtools.Svg; 
public void AddRoundRectangleToRegionExample() 
   RasterCodecs codecs = new RasterCodecs(); 
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); 
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_AddRoundRectangleToRegion.bmp"); 
   // Load the image 
   RasterImage image = codecs.Load(srcFileName); 
   // Add a round rectangle 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); 
   LeadSize sz = new LeadSize(rc.Width / 4, rc.Height / 4); 
   image.AddRoundRectangleToRegion(xform, rc, sz, RasterRegionCombineMode.Set); 
   // Draw something on the image 
   InvertCommand command = new InvertCommand(); 
   // Save the image 
   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); 
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 AddRoundRectangleToRegionExample() 
   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_AddRoundRectangleToRegion.bmp") 
   ' Load the image 
   Dim image As RasterImage = codecs.Load(srcFileName) 
   ' Add a round rectangle 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) 
   Dim sz As LeadSize = New LeadSize(rc.Width \ 4, rc.Height \ 4) 
   image.AddRoundRectangleToRegion(xform, rc, sz, RasterRegionCombineMode.Set) 
   ' Draw something on the image 
   Dim command As InvertCommand = New InvertCommand() 
   ' Save the image 
   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 


Target Platforms

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