CalculateRegionMaximumClipSegments Method

Summary

Gets the number of elements required to hold the clip segments for any row in the region.

Syntax

Objective-C

C++/CLI

Java

Python

public int CalculateRegionMaximumClipSegments()

@property (nonatomic, assign, readonly) NSUInteger maximumClipSegmentsForRegion

public int calculateRegionMaximumClipSegments();

public: 
int CalculateRegionMaximumClipSegments();

def CalculateRegionMaximumClipSegments(self):

Return Value

The maximum number of segments in a row within the region.

Remarks

Use this method in conjunction with GetRegionClipSegments.

For more information, refer to Working with the Existing Region.

Example

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 GetRegionClipSegmentsExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_GetRegionClipSegments.bmp"); 
 
	// Load the image 
	RasterImage image = codecs.Load(srcFileName); 
 
	// Add a region to the image 
	LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3); 
	image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set); 
 
	// Set the pixels inside the region to black 
 
	// Get the maximum number of elements in a row, 
	// so we know how big the array of segments should be 
	int maxClipSegments = image.CalculateRegionMaximumClipSegments(); 
 
	// Get the region bounds, so we know which is the first row 
	LeadRect rgnBounds = image.GetRegionBounds(null); 
 
	// Allocate an array large enough to store the maximum number of segments. 
	int[] segmentBuffer = new int[maxClipSegments]; 
 
	// Loop through the region rows 
	for (int y = rgnBounds.Top; y < rgnBounds.Bottom; y++) 
	{ 
		// Get the segments for the row 
		image.GetRegionClipSegments(y, segmentBuffer, 0); 
 
		// Do something with the pixels 
		for (int i = 0; i < maxClipSegments / 2; i++) 
		{ 
			for (int j = segmentBuffer[i]; j < segmentBuffer[i + 1]; j++) 
			{ 
				RasterColor clr = image.GetPixelColor(y, j); 
				clr = new RasterColor(clr.R / 2, clr.G / 2, clr.B / 2); 
				image.SetPixelColor(y, j, clr); 
			} 
		} 
	} 
 
	// Save the image back to file 
	codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); 
 
	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