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66 lines
2.9 KiB
66 lines
2.9 KiB
// <copyright file="Pixelate.cs" company="James Jackson-South">
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// Copyright (c) James Jackson-South and contributors.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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namespace ImageProcessorCore
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{
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using Processors;
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using System;
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/// <summary>
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/// Extension methods for the <see cref="Image{TColor, TPacked}"/> type.
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/// </summary>
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public static partial class ImageExtensions
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{
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/// <summary>
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/// Pixelates an image with the given pixel size.
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/// </summary>
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/// <typeparam name="TColor">The pixel format.</typeparam>
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/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
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/// <param name="source">The image this method extends.</param>
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/// <param name="size">The size of the pixels.</param>
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/// <param name="progressHandler">A delegate which is called as progress is made processing the image.</param>
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/// <returns>The <see cref="Image{TColor, TPacked}"/>.</returns>
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public static Image<TColor, TPacked> Pixelate<TColor, TPacked>(this Image<TColor, TPacked> source, int size = 4, ProgressEventHandler progressHandler = null)
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where TColor : IPackedVector<TPacked>
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where TPacked : struct
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{
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return Pixelate(source, size, source.Bounds, progressHandler);
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}
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/// <summary>
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/// Pixelates an image with the given pixel size.
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/// </summary>
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/// <typeparam name="TColor">The pixel format.</typeparam>
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/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
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/// <param name="source">The image this method extends.</param>
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/// <param name="size">The size of the pixels.</param>
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/// <param name="rectangle">
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/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
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/// </param>
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/// <param name="progressHandler">A delegate which is called as progress is made processing the image.</param>
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/// <returns>The <see cref="Image{TColor, TPacked}"/>.</returns>
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public static Image<TColor, TPacked> Pixelate<TColor, TPacked>(this Image<TColor, TPacked> source, int size, Rectangle rectangle, ProgressEventHandler progressHandler = null)
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where TColor : IPackedVector<TPacked>
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where TPacked : struct
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{
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if (size <= 0 || size > source.Height || size > source.Width)
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{
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throw new ArgumentOutOfRangeException(nameof(size));
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}
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PixelateProcessor<TColor, TPacked> processor = new PixelateProcessor<TColor, TPacked>(size);
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processor.OnProgress += progressHandler;
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try
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{
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return source.Process(rectangle, processor);
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}
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finally
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{
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processor.OnProgress -= progressHandler;
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}
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}
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}
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}
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