From 7cf7e84dd8f18da76b8713f55b9ad631d2eda199 Mon Sep 17 00:00:00 2001
From: Patrik Svensson <patrik@patriksvensson.se>
Date: Wed, 3 Jan 2024 21:20:00 +0100
Subject: [PATCH] Remove mandelbrot example due to conflicting license

Closes #1423
Closes #1424
---
 examples/Console/Canvas/Mandelbrot.cs | 86 ---------------------------
 examples/Console/Canvas/Program.cs    |  6 +-
 2 files changed, 1 insertion(+), 91 deletions(-)
 delete mode 100644 examples/Console/Canvas/Mandelbrot.cs

diff --git a/examples/Console/Canvas/Mandelbrot.cs b/examples/Console/Canvas/Mandelbrot.cs
deleted file mode 100644
index da804a4..0000000
--- a/examples/Console/Canvas/Mandelbrot.cs
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
-Ported from: https://rosettacode.org/wiki/Mandelbrot_set#C.23
-Licensed under GNU Free Documentation License 1.2
-*/
-
-using System;
-using Spectre.Console;
-
-namespace Canvas;
-
-public static class Mandelbrot
-{
-    private const double MaxValueExtent = 2.0;
-
-    private struct ComplexNumber
-    {
-        public double Real { get; }
-        public double Imaginary { get; }
-
-        public ComplexNumber(double real, double imaginary)
-        {
-            Real = real;
-            Imaginary = imaginary;
-        }
-
-        public static ComplexNumber operator +(ComplexNumber x, ComplexNumber y)
-        {
-            return new ComplexNumber(x.Real + y.Real, x.Imaginary + y.Imaginary);
-        }
-
-        public static ComplexNumber operator *(ComplexNumber x, ComplexNumber y)
-        {
-            return new ComplexNumber(x.Real * y.Real - x.Imaginary * y.Imaginary,
-                x.Real * y.Imaginary + x.Imaginary * y.Real);
-        }
-
-        public double Abs()
-        {
-            return Real * Real + Imaginary * Imaginary;
-        }
-    }
-
-    public static Spectre.Console.Canvas Generate(int width, int height)
-    {
-        var canvas = new Spectre.Console.Canvas(width, height);
-
-        var scale = 2 * MaxValueExtent / Math.Min(canvas.Width, canvas.Height);
-        for (var i = 0; i < canvas.Height; i++)
-        {
-            var y = (canvas.Height / 2 - i) * scale;
-            for (var j = 0; j < canvas.Width; j++)
-            {
-                var x = (j - canvas.Width / 2) * scale;
-                var value = Calculate(new ComplexNumber(x, y));
-                canvas.SetPixel(j, i, GetColor(value));
-            }
-        }
-
-        return canvas;
-    }
-
-    private static double Calculate(ComplexNumber c)
-    {
-        const int MaxIterations = 1000;
-        const double MaxNorm = MaxValueExtent * MaxValueExtent;
-
-        var iteration = 0;
-        var z = new ComplexNumber();
-        do
-        {
-            z = z * z + c;
-            iteration++;
-        } while (z.Abs() < MaxNorm && iteration < MaxIterations);
-
-        return iteration < MaxIterations
-            ? (double)iteration / MaxIterations
-            : 0;
-    }
-
-    private static Color GetColor(double value)
-    {
-        const double MaxColor = 256;
-        const double ContrastValue = 0.2;
-        return new Color(0, 0, (byte)(MaxColor * Math.Pow(value, ContrastValue)));
-    }
-}
diff --git a/examples/Console/Canvas/Program.cs b/examples/Console/Canvas/Program.cs
index 941d39f..3e537dd 100644
--- a/examples/Console/Canvas/Program.cs
+++ b/examples/Console/Canvas/Program.cs
@@ -10,10 +10,6 @@ public static class Program
 {
     public static void Main()
     {
-        // Draw a mandelbrot set using a Canvas
-        var mandelbrot = Mandelbrot.Generate(32, 32);
-        Render(mandelbrot, "Mandelbrot");
-
         // Draw an image using CanvasImage powered by ImageSharp.
         // This requires the "Spectre.Console.ImageSharp" NuGet package.
         var image = new CanvasImage("cake.png");
@@ -21,7 +17,7 @@ public static class Program
         image.MaxWidth(16);
         Render(image, "Image from file (16 wide)");
 
-        // Draw image again, but without render width
+        // Draw image again, but without max width
         image.NoMaxWidth();
         image.Mutate(ctx => ctx.Grayscale().Rotate(-45).EntropyCrop());
         Render(image, "Image from file (fit, greyscale, rotated)");