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ResizeRegionCommand Constructor(int,ResizeRegionCommandType,bool)

Summary

Initializes a new ResizeRegionCommand class object with explicit parameters.

Syntax
C#
VB
C++
Public Function New( _ 
   ByVal dimension As Integer, _ 
   ByVal type As ResizeRegionCommandType, _ 
   ByVal asFrame As Boolean _ 
) 
public: 
ResizeRegionCommand(  
   int dimension, 
   ResizeRegionCommandType type, 
   bool asFrame 
) 

Parameters

dimension
Number of pixels by which to resize the region. This parameter only accepts positive values.

type
Value that indicates whether to contract or expand the image region.

asFrame
Value that indicates whether to create a frame associated with the resized image region. If this parameter is true, then the command creates a frame of thickness "dimension" for the resized region. If the type parameter is ResizeRegionCommandType.ExpandRegion, the frame created will exist outside the boundaries of the resized region. If the type parameter is ResizeRegionCommandType.ContractRegion, the frame will be within the boundaries of the resized region. If this parameter is false then the command resizes the region only, and does not create a frame.

Example

Run the ResizeRegionCommand on an image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void ResizeRegionConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   //Rectangle that defines the region . 
   LeadRect rRgnRect = new LeadRect(80, 20, 100, 40); 
   //Create an elliptical region. 
   image.AddEllipseToRegion(null, rRgnRect, RasterRegionCombineMode.Set); 
   ResizeRegionCommand command = new ResizeRegionCommand(20, ResizeRegionCommandType.ContractRegion, true); 
   //Contract the image region by 20 pixels. 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
 
Public Sub ResizeRegionConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")) 
 
   ' Prepare the command 
   Dim rRgnRect As LeadRect = New LeadRect(80, 20, 100, 40)   'Rectangle that defines the region . 
   'Create an elliptical region. 
   leadImage.AddEllipseToRegion(Nothing, rRgnRect, RasterRegionCombineMode.Set) 
   Dim command As ResizeRegionCommand = New ResizeRegionCommand(20, ResizeRegionCommandType.ContractRegion, True) 
   command.Run(leadImage) 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 
Requirements

Target Platforms

Help Version 20.0.2019.11.25
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Leadtools.ImageProcessing.Effects Assembly