PointFromImage Method

Summary

Translates a point (x,y) from this RasterImage view perspective to the specified view perspective.

Syntax

Objective-C

C++/CLI

Java

Python

public LeadPoint PointFromImage( 
   RasterViewPerspective viewPerspective, 
   LeadPoint pt 
)

- (LeadPoint)pointFromImage:(LTRasterViewPerspective)viewPerspective  
                sourcePoint:(LeadPoint)src

public LeadPoint pointFromImage( 
   RasterViewPerspective viewPerspective, 
   LeadPoint pt 
);

public: 
LeadPoint PointFromImage(  
   RasterViewPerspective viewPerspective, 
   LeadPoint pt 
)

def PointFromImage(self,viewPerspective,pt):

Parameters

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

pt
The point to translate.

Return Value

The translated point.

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 origin of the image should be. Then it converts a known point to bitmap coordinates.

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 PointFromImageExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
   // Load an image that has BottomLeft ViewPerspective 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ULAY1.BMP")); 
 
   LeadPoint ImagePoint = new LeadPoint(0, 0); 
   ImagePoint = image.PointFromImage(RasterViewPerspective.TopLeft, ImagePoint); 
   Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y)); 
 
   ImagePoint.X = 0; 
   ImagePoint.Y = 0; 
   ImagePoint = image.PointToImage(RasterViewPerspective.TopLeft, ImagePoint); 
   Console.WriteLine(string.Format("{0},{1}", ImagePoint.X, ImagePoint.Y)); 
 
   image.Dispose(); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

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Help Version 23.0.2024.5.22

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies