From 4c25bc17afc72c13bfe8ff3375ffc8a46e7027ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=B0=D0=B2=D0=B5=D0=BB=D1=96=D0=B9=20=D0=A1=D0=B0?=
 =?UTF-8?q?=D0=B2=D1=91=D0=BD=D0=B0=D0=BA?= <1986developer@gmail.com>
Date: Mon, 30 Jan 2023 00:24:30 +0300
Subject: [PATCH] Final

---
 FractalTreeGtk/CairoWindow.cs  | 41 ++++++++++++++++++++++++----------
 FractalTreeGtk/Draw/Fractal.cs | 28 ++++++++++++++---------
 2 files changed, 46 insertions(+), 23 deletions(-)

diff --git a/FractalTreeGtk/CairoWindow.cs b/FractalTreeGtk/CairoWindow.cs
index 12c321e..6dce440 100644
--- a/FractalTreeGtk/CairoWindow.cs
+++ b/FractalTreeGtk/CairoWindow.cs
@@ -1,7 +1,10 @@
 using Gtk;
 using CairoObjective;
-using GLib;
 using FractalTreeGtk.Draw;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Diagnostics;
 
 namespace FractalTreeGtk
 {
@@ -9,26 +12,30 @@ namespace FractalTreeGtk
     {
         static int fractallevels = 2;
         DrawingArea drawing = new DrawingArea();
-        Fractal fractal = new Fractal(fractallevels);
+        Fractal fractal;
         public CairoWindow(string title) : base(title) {
             Fullscreen();
             drawing.Drawn += Drawing_Drawn;
             Add(drawing);
             ShowAll();
             KeyPressEvent += CairoWindow_KeyPressEvent;
+            CreateNewFractal();
+        }
+        public void CreateNewFractal()
+        {
+                fractal = new Fractal(fractallevels, this);
         }
-
         private void CairoWindow_KeyPressEvent(object o, KeyPressEventArgs args)
         {
             if(args.Event.Key == Gdk.Key.equal)
             {
-                fractal = new Fractal(++fractallevels);
-                QueueDraw();
+                ++fractallevels;
+                CreateNewFractal();
             }
             if (args.Event.Key == Gdk.Key.minus && fractallevels > 1)
             {
-                fractal = new Fractal(--fractallevels);
-                QueueDraw();
+                --fractallevels;
+                CreateNewFractal();
             }
         }
 
@@ -41,13 +48,23 @@ namespace FractalTreeGtk
             Set.Background(new Cairo.Color(0, 0, 0));
             foreach (CairoObjective.DrawObjects.Line[] lines in (CairoObjective.DrawObjects.Line[][])fractal.Fractallines)
             {
-                foreach (CairoObjective.DrawObjects.Line line in lines) { 
-                branches++;
-                Line.Make(line);
+                try
+                {
+                    foreach (CairoObjective.DrawObjects.Line line in lines) { 
+                        branches++;
+                        Line.Make(line);
+                    }
+                }
+                catch (NullReferenceException)
+                {
+                    Trace.WriteLine("Hello Null");
+                    break;
                 }
             }
-            Text.Make($"Total Branches: {branches}", -(AllocatedWidth / 2), -30, new Cairo.Color(1, 1, 1));
-            Text.Make($"Levels: {fractallevels}", -(AllocatedWidth / 2), -5, new Cairo.Color(1,1,1));
+            Text.Make($"Total Branches: {branches}", -(AllocatedWidth / 2) + 1, -29, 21, new Cairo.Color(0, 0, 0));
+            Text.Make($"Levels: {fractallevels}", -(AllocatedWidth / 2) + 1, -4, 21, new Cairo.Color(0, 0, 0));
+            Text.Make($"Total Branches: {branches}", -(AllocatedWidth / 2), -30, new Cairo.Color(0.1, 1, 0.1));
+            Text.Make($"Levels: {fractallevels}", -(AllocatedWidth / 2), -5, new Cairo.Color(0.1,1,0.1));
         }
     }
 }
diff --git a/FractalTreeGtk/Draw/Fractal.cs b/FractalTreeGtk/Draw/Fractal.cs
index feff3bf..87cde8a 100644
--- a/FractalTreeGtk/Draw/Fractal.cs
+++ b/FractalTreeGtk/Draw/Fractal.cs
@@ -7,31 +7,36 @@ namespace FractalTreeGtk.Draw
 {
     internal class Fractal
     {
+        public bool Drawing = true;
+        CairoWindow window;
         double Length = 100;
         double MainDegree = 0.4;
         int levels;
         int level = 0;
         double deltaLength = 5;
         public Branch[][] Fractallines;
-        public Fractal(int levels)
+        public Fractal(int levels, CairoWindow window)
         {
-                this.levels = levels;
-                Fractallines = new Branch[levels + 1][];
-                CreateBranch();
+            this.window = window;
+            this.levels = levels;
+            Fractallines = new Branch[levels + 1][];
+            CreateBranch();
         }
         private void CreateBranch()
         {
-            Fractallines[level] = new Branch[Convert.ToInt32(Math.Pow(2, level))];
-            for (int i = 0; i < Fractallines[level].Length; i++)
-            {
-                Fractallines[level][i] = new Branch(0, 0, 0, -Length, true, 0);
-            }
-            level++;
-            NextLevel();
+                Fractallines[level] = new Branch[Convert.ToInt32(Math.Pow(2, level))];
+                for (int i = 0; i < Fractallines[level].Length; i++)
+                {
+                    Fractallines[level][i] = new Branch(0, 0, 0, -Length, true, 0);
+                }
+                level++;
+                NextLevel();
         }
         private void NextLevel()
         {
+            window.QueueDraw();
             Length -= deltaLength;
+            window.QueueDraw();
             Fractallines[level] = new Branch[Convert.ToInt32(Math.Pow(2, level))];
             int x = 0;
             for (int i = 0; i < Fractallines[level - 1].Length; i++)
@@ -82,6 +87,7 @@ namespace FractalTreeGtk.Draw
             {
                 NextLevel();
             }
+            else Drawing = false;
         }
         //private int SumOfBranches()
         //{