Final

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);
+                ++fractallevels;
-                QueueDraw();
+                CreateNewFractal();
             }
             if (args.Event.Key == Gdk.Key.minus && fractallevels > 1)
             {
-                fractal = new Fractal(--fractallevels);
+                --fractallevels;
-                QueueDraw();
+                CreateNewFractal();
             }
         }
 
@@ -40,14 +47,24 @@ namespace FractalTreeGtk
             Set.Context = args.Cr;
             Set.Background(new Cairo.Color(0, 0, 0));
             foreach (CairoObjective.DrawObjects.Line[] lines in (CairoObjective.DrawObjects.Line[][])fractal.Fractallines)
+            {
+                try
                 {
                     foreach (CairoObjective.DrawObjects.Line line in lines) { 
                         branches++;
                         Line.Make(line);
                     }
                 }
-            Text.Make($"Total Branches: {branches}", -(AllocatedWidth / 2), -30, new Cairo.Color(1, 1, 1));
+                catch (NullReferenceException)
-            Text.Make($"Levels: {fractallevels}", -(AllocatedWidth / 2), -5, new Cairo.Color(1,1,1));
+                {
+                    Trace.WriteLine("Hello Null");
+                    break;
+                }
+            }
+            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));
         }
     }
 }

FractalTreeGtk/Draw/Fractal.cs

@@ -7,14 +7,17 @@ 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.window = window;
             this.levels = levels;
             Fractallines = new Branch[levels + 1][];
             CreateBranch();
@@ -31,7 +34,9 @@ namespace FractalTreeGtk.Draw
         }
         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()
         //{