RectangleFromImage Method

Summary

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

Syntax

Objective-C

C++/CLI

Java

Python

public LeadRect RectangleFromImage( 
   RasterViewPerspective viewPerspective, 
   LeadRect rc 
)

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

public LeadRect rectangleFromImage( 
   RasterViewPerspective viewPerspective, 
   LeadRect rc 
);

public: 
LeadRect RectangleFromImage(  
   RasterViewPerspective viewPerspective, 
   LeadRect rc 
)

def RectangleFromImage(self,viewPerspective,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:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

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Help Version 22.0.2023.5.16

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies