FastNoise Lite: PreviewApp

PreviewApp/FastBitmap.cs

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+// Adapted from https://stackoverflow.com/a/34801225
+// This fixes the SetPixel speed issue.
+using System;
+using Eto.Drawing;
+
+public class FastBitmap
+{
+    public Int32[] Bits { get; private set; }
+    public int Height { get; private set; }
+    public int Width { get; private set; }
+
+    public FastBitmap(int width, int height)
+    {
+        Width = width;
+        Height = height;
+        Bits = new Int32[width * height];
+    }
+
+    public void SetPixel(int x, int y, Color colour)
+    {
+        int index = x + (y * Width);
+        int col = colour.ToArgb();
+
+        Bits[index] = col;
+    }
+
+    public Color GetPixel(int x, int y)
+    {
+        int index = x + (y * Width);
+        int col = Bits[index];
+        Color result = Color.FromArgb(col);
+
+        return result;
+    }
+
+    public Bitmap CreateBitmap() {
+        return new Bitmap(Width, Height, PixelFormat.Format32bppRgba, Bits);
+    }
+}

PreviewApp/FastNoiseLite.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Eto.Forms" Version="2.5.2"/>
+    <PackageReference Include="Eto.Platform.Wpf" Version="2.5.2"/>
+  </ItemGroup>
+  <ItemGroup>
+    <!--<Compile Include="..\CSharp\FastNoise.cs" Link="FastNoise.cs" />-->
+  </ItemGroup>
+</Project>