initial commits migrating samples from ImageSharp repo

.gitattributes

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+*.doc  diff=astextplain
+*.DOC	diff=astextplain
+*.docx	diff=astextplain
+*.DOCX	diff=astextplain
+*.dot	diff=astextplain
+*.DOT	diff=astextplain
+*.pdf	diff=astextplain
+*.PDF	diff=astextplain
+*.rtf	diff=astextplain
+*.RTF	diff=astextplain
+
+*.jpg  	binary
+*.png 	binary
+*.gif 	binary
+
+*.cs text=auto diff=csharp 
+*.vb text=auto
+*.c text=auto
+*.cpp text=auto
+*.cxx text=auto
+*.h text=auto
+*.hxx text=auto
+*.py text=auto
+*.rb text=auto
+*.java text=auto
+*.html text=auto
+*.htm text=auto
+*.css text=auto
+*.scss text=auto
+*.sass text=auto
+*.less text=auto
+*.js text=auto
+*.lisp text=auto
+*.clj text=auto
+*.sql text=auto
+*.php text=auto
+*.lua text=auto
+*.m text=auto
+*.asm text=auto
+*.erl text=auto
+*.fs text=auto
+*.fsx text=auto
+*.hs text=auto
+
+*.csproj text=auto merge=union 
+*.vbproj text=auto merge=union 
+*.fsproj text=auto merge=union 
+*.dbproj text=auto merge=union 
+*.sln text=auto eol=crlf merge=union 

.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+src/**/build/
+tests/**/build/
+bld/
+[Bb]in/
+[Oo]bj/
+
+# Visual Studo 2015 cache/options directory
+.vs/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# ASP.NET 5
+project.lock.json
+artifacts/
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings 
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+*.[Cc]ache
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+**/node_modules
+**/node_modules/*
+
+# ASP.NET 5
+project.lock.json
+artifacts/
+
+#BenchmarkDotNet
+**/BenchmarkDotNet.Artifacts/
+
+# Build process
+*.csproj.bak
+
+**/output/*.png
+**/output/*.jpg
+**/output/*.jpeg
+**/output/*.bmp
+**/output/*.gif

ImageSharp/AvatarWithRoundedCorner/AvatarWithRoundedCorner.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta0001" />
+  </ItemGroup>
+
+
+</Project>

ImageSharp/AvatarWithRoundedCorner/Program.cs

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