RectangleFromImage Method

Summary

Translates a rectangle from this RasterImage view perspective to the specified view perspective.

Syntax

Objective-C

C++

Java

public LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective, 
   LeadRect rc 
)

Public Function RectangleFromImage( _ 
   ByVal viewPerspective As RasterViewPerspective, _ 
   ByVal rc As LeadRect _ 
) As LeadRect

- (LeadRect)rectangleFromImage:(LTRasterViewPerspective)viewPerspective  
                    sourceRect:(LeadRect)src

public LeadRect rectangleFromImage( 
  RasterViewPerspective viewPerspective,  
  LeadRect rc 
)

public: 
LeadRect RectangleFromImage(  
   RasterViewPerspective viewPerspective, 
   LeadRect rc 
)

Parameters

viewPerspective
Destination view perspective to which the rectangle should be translated.

rc
The rectangle to translate.

Return Value

The translated rectangle.

Remarks

For more information, refer to Accounting for View Perspective.

For more information, refer to Changing Image Coordinates.

Example

This example finds out where the selected rectangle of the image would be in a TopLeft ViewPerspective.

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 RectangleFromImageExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
	// Load an image that has BottomLeft ViewPerspective 
	RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP")); 
 
	LeadRect imageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
	imageRectangle = image.RectangleFromImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle); 
	Console.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.Left, imageRectangle.Top, imageRectangle.Right, imageRectangle.Bottom)); 
 
	imageRectangle = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
	imageRectangle = image.RectangleToImage(Leadtools.RasterViewPerspective.TopLeft, imageRectangle); 
	Console.WriteLine(string.Format("{0},{1},{2},{3}", imageRectangle.Left, imageRectangle.Top, imageRectangle.Right, imageRectangle.Bottom)); 
 
	image.Dispose(); 
	codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

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 RectangleFromImageExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   ' Load an image that has BottomLeft ViewPerspective 
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP")) 
 
   Dim ImageRectangle As LeadRect = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleFromImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Console.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   ImageRectangle = New LeadRect(0, 0, image.Width - 1, image.Height - 1) 
   ImageRectangle = image.RectangleToImage(RasterViewPerspective.TopLeft, ImageRectangle) 
   Console.WriteLine(String.Format("{0},{1},{2},{3}", ImageRectangle.Left, ImageRectangle.Top, ImageRectangle.Right, ImageRectangle.Bottom)) 
 
   image.Dispose() 
   codecs.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

Download our FREE evaluation

Help Version 21.0.2021.7.2

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies