mirror of https://github.com/SixLabors/ImageSharp
Anton Firszov
8 years ago
6 changed files with 0 additions and 190 deletions
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<Project Sdk="Microsoft.NET.Sdk"> |
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<PropertyGroup> |
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<OutputType>Exe</OutputType> |
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<TargetFramework>netcoreapp1.1</TargetFramework> |
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</PropertyGroup> |
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<ItemGroup> |
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<ProjectReference Include="..\..\src\ImageSharp.Drawing\ImageSharp.Drawing.csproj" /> |
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</ItemGroup> |
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</Project> |
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// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using System; |
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using System.Numerics; |
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using SixLabors.ImageSharp; |
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using SixLabors.ImageSharp.PixelFormats; |
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using SixLabors.ImageSharp.Processing; |
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using SixLabors.Primitives; |
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using SixLabors.Shapes; |
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namespace AvatarWithRoundedCorner |
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{ |
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static class Program |
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{ |
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static void Main(string[] args) |
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{ |
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System.IO.Directory.CreateDirectory("output"); |
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using (var img = Image.Load("fb.jpg")) |
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{ |
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// as generate returns a new IImage make sure we dispose of it
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using (Image<Rgba32> destRound = img.Clone(x => x.ConvertToAvatar(new Size(200, 200), 20))) |
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{ |
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destRound.Save("output/fb.png"); |
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} |
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using (Image<Rgba32> destRound = img.Clone(x => x.ConvertToAvatar(new Size(200, 200), 100))) |
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{ |
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destRound.Save("output/fb-round.png"); |
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} |
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using (Image<Rgba32> destRound = img.Clone(x => x.ConvertToAvatar(new Size(200, 200), 150))) |
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{ |
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destRound.Save("output/fb-rounder.png"); |
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} |
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using (Image<Rgba32> destRound = img.CloneAndConvertToAvatarWithoutApply(new Size(200, 200), 150)) |
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{ |
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destRound.Save("output/fb-rounder-without-apply.png"); |
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} |
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// the original `img` object has not been altered at all.
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} |
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} |
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// 1. The short way:
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// Implements a full image mutating pipeline operating on IImageProcessingContext<Rgba32>
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// We need the dimensions of the resized image to deduce 'IPathCollection' needed to build the corners,
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// so we implement an "inline" image processor by utilizing 'ImageExtensions.Apply()'
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private static IImageProcessingContext<Rgba32> ConvertToAvatar(this IImageProcessingContext<Rgba32> processingContext, Size size, float cornerRadius) |
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{ |
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return processingContext.Resize(new ResizeOptions |
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{ |
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Size = size, |
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Mode = ResizeMode.Crop |
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}).Apply(i => ApplyRoundedCorners(i, cornerRadius)); |
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} |
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// 2. A more verbose way, avoiding 'Apply()':
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// First we create a resized clone of the image, then we draw the corners on that instance with Mutate().
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private static Image<Rgba32> CloneAndConvertToAvatarWithoutApply(this Image<Rgba32> image, Size size, float cornerRadius) |
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{ |
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Image<Rgba32> result = image.Clone( |
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ctx => ctx.Resize( |
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new ResizeOptions |
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{ |
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Size = size, |
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Mode = ResizeMode.Crop |
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})); |
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ApplyRoundedCorners(result, cornerRadius); |
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return result; |
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} |
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// This method can be seen as an inline implementation of an `IImageProcessor`:
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// (The combination of `IImageOperations.Apply()` + this could be replaced with an `IImageProcessor`)
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public static void ApplyRoundedCorners(Image<Rgba32> img, float cornerRadius) |
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{ |
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IPathCollection corners = BuildCorners(img.Width, img.Height, cornerRadius); |
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// mutating in here as we already have a cloned original
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img.Mutate(x => x.Fill(Rgba32.Transparent, corners, new GraphicsOptions(true) |
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{ |
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BlenderMode = PixelBlenderMode.Src // enforces that any part of this shape that has color is punched out of the background
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})); |
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} |
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public static IPathCollection BuildCorners(int imageWidth, int imageHeight, float cornerRadius) |
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{ |
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// first create a square
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var rect = new RectangularePolygon(-0.5f, -0.5f, cornerRadius, cornerRadius); |
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// then cut out of the square a circle so we are left with a corner
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IPath cornerToptLeft = rect.Clip(new EllipsePolygon(cornerRadius - 0.5f, cornerRadius - 0.5f, cornerRadius)); |
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// corner is now a corner shape positions top left
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//lets make 3 more positioned correctly, we can do that by translating the orgional artound the center of the image
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var center = new Vector2(imageWidth / 2F, imageHeight / 2F); |
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float rightPos = imageWidth - cornerToptLeft.Bounds.Width + 1; |
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float bottomPos = imageHeight - cornerToptLeft.Bounds.Height + 1; |
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// move it across the widthof the image - the width of the shape
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IPath cornerTopRight = cornerToptLeft.RotateDegree(90).Translate(rightPos, 0); |
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IPath cornerBottomLeft = cornerToptLeft.RotateDegree(-90).Translate(0, bottomPos); |
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IPath cornerBottomRight = cornerToptLeft.RotateDegree(180).Translate(rightPos, bottomPos); |
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return new PathCollection(cornerToptLeft, cornerBottomLeft, cornerTopRight, cornerBottomRight); |
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} |
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} |
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} |
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Before Width: | Height: | Size: 15 KiB |
@ -1,12 +0,0 @@ |
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<Project Sdk="Microsoft.NET.Sdk"> |
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<PropertyGroup> |
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<OutputType>Exe</OutputType> |
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<TargetFramework>netcoreapp1.1</TargetFramework> |
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</PropertyGroup> |
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<ItemGroup> |
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<ProjectReference Include="..\..\src\ImageSharp\ImageSharp.csproj" /> |
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</ItemGroup> |
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</Project> |
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@ -1,23 +0,0 @@ |
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// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using System; |
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using SixLabors.ImageSharp; |
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using SixLabors.ImageSharp.Formats.Jpeg; |
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namespace ChangeDefaultEncoderOptions |
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{ |
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class Program |
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{ |
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static void Main(string[] args) |
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{ |
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// lets switch out the default encoder for jpeg to one
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// that saves at 90 quality and ignores the matadata
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Configuration.Default.SetEncoder(ImageFormats.Jpeg, new JpegEncoder() |
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{ |
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Quality = 90, |
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IgnoreMetadata = true |
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}); |
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} |
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} |
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} |
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