Clip Method

Summary

Trims this RasterRegion to fit inside a specified LeadRect.

Syntax

Objective-C

C++

Java

public void Clip( 
   LeadRect rect 
)

Public Sub Clip( _ 
   ByVal rect As LeadRect _ 
)

- (BOOL)clip:(LeadRect)rect error:(NSError **)error

public void clip(LeadRect rect)

public: 
void Clip(  
   LeadRect rect 
)

Parameters

rect
A LeadRect that defines the clipping boundaries.

Example

This example will create a large elliptical region in an image and fill it with yellow. It will then clip this region by 10 pixels from each side and fill the new region with red.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using LeadtoolsExamples.Common; 
 
public void RasterRegionClipExample() 
{ 
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); 
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_ClipRegion.bmp"); 
 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      // Load the source image 
      using (RasterImage image = codecs.Load(srcFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1)) 
      { 
         // Add a large elliptical region  
         image.AddEllipseToRegion(null, new LeadRect(0, 0, image.ImageWidth, image.ImageHeight), RasterRegionCombineMode.Set); 
 
         // Fill the image with yellow 
         FillCommand cmd = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Yellow)); 
         cmd.Run(image); 
 
         // Get the region 
         using (RasterRegion region = image.GetRegion(null)) 
         { 
            // Clip this region by 10 pixels from each end 
            LeadRect bounds = region.GetBounds(); 
            bounds.Inflate(-10, -10); 
 
            region.Clip(bounds); 
 
            // Re-set this region into the image 
            image.SetRegion(null, region, RasterRegionCombineMode.Set); 
         } 
 
         // Now fill with red and save 
         cmd = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Red)); 
         cmd.Run(image); 
 
         codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); 
      } 
   } 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
 
Public Sub RasterRegionClipExample() 
   Dim codecs As New RasterCodecs() 
 
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") 
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_ClipRegion.bmp") 
 
   ' Load the source image 
   Using image As RasterImage = codecs.Load(srcFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1) 
      ' Add a large elliptical region  
      image.AddEllipseToRegion(Nothing, New LeadRect(0, 0, image.ImageWidth, image.ImageHeight), RasterRegionCombineMode.Set) 
 
      ' Fill the image with yellow 
      Dim cmd As New FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Yellow)) 
      cmd.Run(image) 
 
      ' Get the region 
      Using region As RasterRegion = image.GetRegion(Nothing) 
         ' Clip this region by 10 pixels from each end 
         Dim bounds As LeadRect = region.GetBounds() 
         bounds.Inflate(-10, -10) 
 
         region.Clip(bounds) 
 
         ' Re-set this region into the image 
         image.SetRegion(Nothing, region, RasterRegionCombineMode.Set) 
      End Using 
 
      ' Now fill with red and save 
      cmd = New FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Red)) 
      cmd.Run(image) 
 
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24) 
   End Using 
 
   codecs.Dispose() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

Requirements

Target Platforms

Reference

RasterRegion Class

RasterRegion Members

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Help Version 20.0.2020.4.2

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies