DitheringMethod Property

Summary

Gets or sets a value that specifies the default dithering method to use when converting an image from 64, 48, 32, 24, or 16 bits per pixel to 8 bits per pixel or fewer.

Syntax

Objective-C

C++/CLI

Python

public static RasterDitheringMethod DitheringMethod { get; set; }

+(LTRasterDitheringMethod)ditheringMethod; 
+(void)ditheringMethod:(LTRasterDitheringMethod)value;

public: 
static property RasterDitheringMethod DitheringMethod { 
   RasterDitheringMethod get(); 
   void set (    RasterDitheringMethod ); 
}

DitheringMethod # get and set (RasterDefaults)

Property Value

A RasterDitheringMethod enumeration value that specifies the default dithering method to use when converting an image from 64, 48, 32, 24, or 16 bits per pixel to 8 bits per pixel or fewer.

Example

using Leadtools; 
using Leadtools.Codecs; 
 
 
public void RasterDefaultsExample() 
{ 
	// Set the limit for RasterImage object allocations 
	RasterMemoryThreshold threshold = RasterDefaults.MemoryThreshold; 
	threshold.MaximumGlobalRasterImageMemory = 20 * 1000 * 1024; 
	RasterDefaults.MemoryThreshold = threshold; 
 
	ShowValues(); 
 
	// Create a raster image with current DPI 
	RasterImage image1 = new RasterImage( 
	   RasterMemoryFlags.Conventional, 
	   100, 
	   100, 
	   24, 
	   RasterByteOrder.Bgr, 
	   RasterViewPerspective.TopLeft, 
	   null, 
	   IntPtr.Zero, 
	   0); 
	Console.WriteLine("Resolution of created image is {0} by {1} DPI", image1.XResolution, image1.YResolution); 
 
	// Change the resolution 
	int xOldResolution = RasterDefaults.XResolution; 
	int yOldResolution = RasterDefaults.YResolution; 
	int xNewResolution = 196; 
	int yNewResolution = 196; 
	RasterDefaults.XResolution = xNewResolution; 
	RasterDefaults.YResolution = yNewResolution; 
	ShowValues(); 
 
	// Create another raster image 
	// Create a raster image with current DPI 
	RasterImage image2 = new RasterImage( 
	   RasterMemoryFlags.Conventional, 
	   100, 
	   100, 
	   24, 
	   RasterByteOrder.Bgr, 
	   RasterViewPerspective.TopLeft, 
	   null, 
	   IntPtr.Zero, 
	   0); 
	Console.WriteLine("Resolution of created image is {0} by {1} DPI", image2.XResolution, image2.YResolution); 
	Debug.Assert(image2.XResolution == xNewResolution); 
	Debug.Assert(image2.YResolution == yNewResolution); 
 
	// Reset old values 
	RasterDefaults.XResolution = xOldResolution; 
	RasterDefaults.YResolution = yOldResolution; 
 
	image1.Dispose(); 
	image2.Dispose(); 
} 
 
void ShowValues() 
{ 
	Console.WriteLine("Current defaults:"); 
	Console.WriteLine("MaximumThreadCount: {0}", RasterDefaults.MaximumThreadCount); 
	Console.WriteLine("XResolution: {0}", RasterDefaults.XResolution); 
	Console.WriteLine("YResolution: {0}", RasterDefaults.YResolution); 
	Console.WriteLine("DitheringMethod: {0}", RasterDefaults.DitheringMethod); 
	Console.WriteLine("MemoryFlags: {0}", RasterDefaults.MemoryFlags); 
 
	RasterMemoryThreshold threshold = RasterDefaults.MemoryThreshold; 
	Console.WriteLine("MemoryThreshold.TiledThreshold: {0}", threshold.TiledThreshold); 
	Console.WriteLine("MemoryThreshold.MaximumConventionalSize: {0}", threshold.MaximumConventionalSize); 
	Console.WriteLine("MemoryThreshold.TileSize: {0}", threshold.TileSize); 
	Console.WriteLine("MemoryThreshold.ConventionalTiles: {0}", threshold.ConventionalTiles); 
	Console.WriteLine("MemoryThreshold.ConventionalBuffers: {0}", threshold.ConventionalBuffers); 
	Console.WriteLine("MemoryThreshold.MaximumGlobalRasterImageMemory: {0}", threshold.MaximumGlobalRasterImageMemory); 
 
	Console.WriteLine("TemporaryDirectory: {0}", RasterDefaults.TemporaryDirectory); 
}

Requirements

Target Platforms

Reference

RasterDefaults Class

RasterDefaults Members

Download our FREE evaluation

Help Version 22.0.2023.5.16

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies