GetRegionBounds Method

Summary

Gets the bounding rectangle of the image region.

Syntax

Objective-C

C++

Java

public LeadRect GetRegionBounds( 
   RasterRegionXForm xform 
)

Public Function GetRegionBounds( _ 
   ByVal xform As RasterRegionXForm _ 
) As LeadRect

- (LeadRect)regionBounds:(nullable LTRasterRegionXForm *)xform

public LeadRect getRegionBounds(RasterRegionXForm xform)

public: 
LeadRect GetRegionBounds(  
   RasterRegionXForm^ xform 
)

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.

Return Value

The bounding rectangle.

Example

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 GetRegionBoundsExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); 
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_GetRegionBounds.bmp"); 
 
   // Load the image 
   RasterImage image = codecs.Load(srcFileName); 
 
   // Add an ellipse inside a rectangle region to the image 
 
   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3); 
   image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set); 
 
   rc = image.GetRegionBounds(null); 
 
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Xor); 
 
   // Invert the region area and save the image 
   InvertCommand command = new InvertCommand(); 
   command.Run(image); 
   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); 
 
   image.Dispose(); 
   codecs.Dispose(); 
}

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 GetRegionBoundsExample() 
   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_GetRegionBounds.bmp") 
 
   ' Load the image 
   Dim image As RasterImage = codecs.Load(srcFileName) 
 
   ' Add an ellipse inside a rectangle region to the image 
 
   Dim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3) 
   image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set) 
 
   rc = image.GetRegionBounds(Nothing) 
 
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Xor) 
 
   ' Invert the region area and save the image 
   Dim command As InvertCommand = New InvertCommand() 
   command.Run(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

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Dicom; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
using Leadtools.Windows.Media; 
 
public void GetRegionBoundsExample(Stream destStream) 
{ 
   // create a new image to work with 
   RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0); 
 
   // Add an rectanle inside a rectangle region to the image 
 
   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3); 
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set); 
 
   rc = image.GetRegionBounds(null); 
 
   rc = new LeadRect(image.Width / 4, image.Height / 4, image.Width / 4, image.Height / 4); 
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Xor); 
 
   // Invert the region area and save the image 
   InvertCommand command = new InvertCommand(); 
   command.Run(image); 
 
   // Save the image back to file 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0); 
 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Dicom 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Core 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.Windows.Media 
 
Public Sub GetRegionBoundsExample(ByVal destStream As Stream) 
   ' create a new image to work with 
   Dim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0) 
 
   ' Add an rectanle inside a rectangle region to the image 
 
   Dim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3) 
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set) 
 
   rc = image.GetRegionBounds(Nothing) 
 
   rc = New LeadRect(image.Width / 4, image.Height / 4, image.Width / 4, image.Height / 4) 
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Xor) 
 
   ' Invert the region area and save the image 
   Dim command As InvertCommand = New InvertCommand() 
   command.Run(image) 
 
   ' Save the image back to file 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0) 
 
   image.Dispose() 
End Sub

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

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Help Version 20.0.2020.4.2

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies