BitmapDataExtensionsDither(IReadWriteBitmapData, IQuantizer, IDitherer) Method

Quantizes an IReadWriteBitmapData with dithering (reduces the number of colors while trying to preserve details) using the specified quantizer and ditherer.


Namespace: KGySoft.Drawing.Imaging
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 8.1.0
public static void Dither(
	this IReadWriteBitmapData bitmapData,
	IQuantizer quantizer,
	IDitherer ditherer


bitmapData  IReadWriteBitmapData
An IReadWriteBitmapData instance to be quantized.
quantizer  IQuantizer
An IQuantizer implementation to be used for quantizing the specified bitmapData.
ditherer  IDitherer
An IDitherer implementation to be used for dithering during the quantization of the specified bitmapData.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IReadWriteBitmapData. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).



This method adjusts the degree of parallelization automatically, blocks the caller, and does not support cancellation or reporting progress. Use the BeginDither or DitherAsync (in .NET Framework 4.0 and above) methods for asynchronous call and to adjust parallelization, set up cancellation and for reporting progress.

This method quantizes bitmapData with dithering in place (its original content will be overwritten). To return a new instance use the Clone extension method instead.

If the KnownPixelFormat or the palette of bitmapData is not compatible with the colors of the specified quantizer, then the result may not be correct.

If bitmapData has already the same set of colors that the specified quantizer, then it can happen that calling this method does not change bitmapData at all.



ArgumentNullExceptionbitmapData, quantizer or ditherer is .
InvalidOperationExceptionThe IQuantizer.Initialize method or the IDitherer.Initialize method returned .

See Also