DitheringMethod Property (original) (raw)

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

C#

Objective-C

C++/CLI

Python

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

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); }

Leadtools Assembly

Convert(byte[],int,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],int,int,int,RasterConvertBufferFlags) Method

Convert(byte[],int,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],RasterColor16[],RasterColor16[],int,int,int,RasterConvertBufferFlags) Method

Convert(IntPtr,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],int,int,int,RasterConvertBufferFlags) Method

Convert(IntPtr,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],RasterColor16[],RasterColor16[],int,int,int,RasterConvertBufferFlags) Method