Clip Method

Summary

Trims this RasterRegion to fit inside a specified LeadRect.

Syntax

Objective-C

C++/CLI

Java

Python

public void Clip( 
   LeadRect rect 
)

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

public void clip( 
   LeadRect rect 
);

public: 
void Clip(  
   LeadRect rect 
)

def Clip(self,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; 
 
 
public void RasterRegionClipExample() 
{ 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
   string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "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); 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterRegion Class

RasterRegion Members

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Help Version 22.0.2023.5.16

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies