Исправлена ошибка, приводящая к краху программы, из-за невозможности сохранить результаты работы

Signal Generator/DrawTask.cs

@@ -54,28 +54,42 @@ namespace Signal_Generator
         private void drawSignalAtCanvas()
         {
             double lastX = 0, lastY = 0;
-            double w = canvas.ActualWidth;
-            for (int i = 0; i != (int)w; i++)
+            double W = canvas.ActualWidth;
+            double dX = (procedureModel.Duration / 1000) / W;
+            for (int X = 0; X != (int)W; X++)
             {
-                procedureModel.CurrentAmplitude = multiSignal.currentAmplitude(i / 5.0).ToString();
-                procedureModel.CurrentTime = (i / 5.0).ToString();
-                double y = multiSignal.currentAmplitude(i / 5.0);
-                drawLine(lastX, lastY, i, y);
-                lastX = i;
-                lastY = y;
-                Thread.Sleep(10);
-                switch (state)
-                {
-                    case State.Paused:
-                        while (state == State.Paused)
-                            Thread.Sleep(10);
-                        break;
-                    case State.Canceled: return;
-                }
+                double Y = multiSignal.currentAmplitude(X * dX);
+                updateTextBoxProps(Y, X * dX * 1000);
+                drawLine(lastX, lastY, X, Y);
+                lastX = X;
+                lastY = Y;
+                if (taskSemaphore() == false) return;
             }
             state = State.Finished;
         }
 
+        private bool taskSemaphore()
+        {
+            Thread.Sleep(10);
+            switch (state)
+            {
+                case State.Paused:
+                    while (state == State.Paused)
+                        Thread.Sleep(50);
+                    break;
+                case State.Canceled: return false;
+            }
+            return true;
+        }
+
+        private void updateTextBoxProps(double amp, double time)
+        {
+            amp = Math.Round(amp, 2);
+            time = Math.Round(time, 2);
+            procedureModel.CurrentAmplitude = amp.ToString();
+            procedureModel.CurrentTime = time.ToString();
+        }
+
         private void drawLine(double x1, double y1, double x2, double y2)
         {
             Action a = () => {
@@ -83,18 +97,17 @@ namespace Signal_Generator
                 l.StrokeThickness = 1;
                 l.Stroke = Brushes.Red;
                 l.X1 = x1;
-                l.Y1 = remap(y1);
+                l.Y1 = remapOY(y1, 100, canvas.ActualHeight);
                 l.X2 = x2;
-                l.Y2 = remap(y2);
+                l.Y2 = remapOY(y2, 100, canvas.ActualHeight);
                 canvas.Children.Add(l);
             };
             canvas.Dispatcher.Invoke(a);
         }
 
-        private double remap(double x, double oldMin = -100.0, double oldMax = 100.0, double newMin = 100.0, double newMax = 0.0)
+        private double remapOY(double x, double amp = 100.0, double height = 100.0)
         {
-            newMin = canvas.ActualHeight;
-            return newMin + (x - oldMin) * (newMax - newMin) / (oldMax - oldMin);
+            return height + (x + amp) * (-height) / (2 * amp);
         }
     }
 }

Signal Generator/MainWindow.xaml

@@ -5,7 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:Signal_Generator"
         mc:Ignorable="d"
-        Title="Генератор сигналов" Height="450" Width="600">
+        Title="Генератор сигналов" Height="450" Width="600" Closing="Window_Closing">
     <Grid Margin="10">
         <Grid.RowDefinitions>
             <RowDefinition Height="*"/>

Signal Generator/MainWindow.xaml.cs

@@ -23,14 +23,15 @@ namespace Signal_Generator
     {
         AddSignalWindow addSignalWindow_Instance;
         TaskWindow taskWindow_Instance;
-        ObservableCollection<IAnalogSignal> signalCollection;
+        MultiSignal multiSignal = MultiSignal.getInstance();
 
         public MainWindow()
         {
             InitializeComponent();
-            signalCollection = new ObservableCollection<IAnalogSignal>();
+            var c = Properties.Settings.LoadSignals();
+            if (c != null) multiSignal.signals = c;
             signals_ListBox.Items.Clear();
-            signals_ListBox.ItemsSource = signalCollection;
+            signals_ListBox.ItemsSource = multiSignal.signals;
         }
 
         private void addSignal_Button_Click(object sender, RoutedEventArgs e)
@@ -52,18 +53,13 @@ namespace Signal_Generator
             var signal = null as IAnalogSignal;
             signal = (IAnalogSignal) addSignalWindow_Instance.signalType_ComboBox.SelectedItem;
             if (addSignalWindow_Instance.signalType_ComboBox.SelectedItem == null) return;
-            signalCollection.Add(signal);
+            multiSignal.Add(signal);
             addSignalWindow_Instance.Close();
         }  
 
         private void startProcedure_Button_Click(object sender, RoutedEventArgs e)
         {
             IsEnabled = false;
-            MultiSignal ms = MultiSignal.getInstance();
-            foreach (IAnalogSignal item in signalCollection)
-            {
-                ms.add(item);
-            }
             taskWindow_Instance = new TaskWindow();
             taskWindow_Instance.Show();
             taskWindow_Instance.Closed += enableMainWindow;
@@ -71,8 +67,14 @@ namespace Signal_Generator
 
         private void removeSignal_Button_Click(object sender, RoutedEventArgs e)
         {
-            if (signals_ListBox.SelectedIndex == -1) return;
-            signalCollection.RemoveAt(signals_ListBox.SelectedIndex);
+            if (signals_ListBox.SelectedItem == null) return;
+            var x = signals_ListBox.SelectedItem as IAnalogSignal;
+            multiSignal.Remove(x);
+        }
+
+        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
+        {
+            Properties.Settings.SaveSignals(multiSignal.signals);
         }
     }
 }

Signal Generator/ProcedureModel.cs

@@ -45,7 +45,7 @@ namespace Signal_Generator
             var btn = parameters[0] as Button;
             var ms = MultiSignal.getInstance();
 
-            if ((ms == null) || (ms.count() == 0))
+            if ((ms == null) || (ms.Count() == 0))
                 return false;
             switch (btn.Name)
             {
@@ -65,14 +65,11 @@ namespace Signal_Generator
             if (currentTask == null) return "Запустить";
             switch (currentTask.state)
             {
-                case DrawTask.State.Created:
-                    return "Запустить";
                 case DrawTask.State.Running:
-                    return "Завершить";
                 case DrawTask.State.Paused:
-                    goto case DrawTask.State.Running;
+                    return "Завершить";
                 default:
-                    goto case DrawTask.State.Created;
+                    return "Запустить";
             }
         }
 
@@ -81,14 +78,12 @@ namespace Signal_Generator
             if (currentTask == null) return new Tuple<bool, string>(false, "Пауза");
             switch (currentTask.state)
             {
-                case DrawTask.State.Created:
-                    return new Tuple<bool, string>(false, "Пауза");
                 case DrawTask.State.Running:
                     return new Tuple<bool, string>(true, "Пауза");
                 case DrawTask.State.Paused:
                     return new Tuple<bool, string>(true, "Возобновить");
                 default:
-                    goto case DrawTask.State.Created;
+                    return new Tuple<bool, string>(false, "Пауза");
             }
         }
 
@@ -113,14 +108,13 @@ namespace Signal_Generator
 
         private void startOrCancelTask ()
         {
-            targetCanvas.Children.Clear();
             if (currentTask != null)
                 switch (currentTask.state)
                 {
                     case DrawTask.State.Paused:
-                        goto case DrawTask.State.Running;
                     case DrawTask.State.Running:
                         currentTask.state = DrawTask.State.Canceled;
+                        targetCanvas.Children.Clear();
                         return;
                 }
             Action newAction = () =>
@@ -167,5 +161,16 @@ namespace Signal_Generator
                 PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("CurrentTime"));
             }
         }
+
+        private double duration = 1000;
+        public double Duration
+        {
+            get { return duration; }
+            set
+            {
+                duration = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("CurrentTime"));
+            }
+        }
     }
 }

Signal Generator/Settings.cs

@@ -1,4 +1,10 @@
-namespace Signal_Generator.Properties {
+using System;
+using System.Collections.ObjectModel;
+using System.IO;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.Windows;
+
+namespace Signal_Generator.Properties {
     
     
     // Этот класс позволяет обрабатывать определенные события в классе параметров:
@@ -11,9 +17,9 @@
         public Settings() {
             // // Для добавления обработчиков событий для сохранения и изменения параметров раскомментируйте приведенные ниже строки:
             //
-            // this.SettingChanging += this.SettingChangingEventHandler;
+            //this.SettingChanging += this.SettingChangingEventHandler;
             //
-            // this.SettingsSaving += this.SettingsSavingEventHandler;
+            //this.SettingsSaving += this.SettingsSavingEventHandler;
             //
         }
         
@@ -24,5 +30,36 @@
         private void SettingsSavingEventHandler(object sender, System.ComponentModel.CancelEventArgs e) {
             // Добавьте здесь код для обработки события SettingsSaving.
         }
+
+        public static void SaveSignals(ObservableCollection<IAnalogSignal> signals)
+        {
+            try
+            {
+                BinaryFormatter formatter = new BinaryFormatter();
+                using (FileStream fs = new FileStream("settings.dat", FileMode.OpenOrCreate))
+                {
+                    formatter.Serialize(fs, signals);
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Не удалось сохранить результаты работы");
+            }
+        }
+
+        public static ObservableCollection<IAnalogSignal> LoadSignals()
+        {
+            BinaryFormatter formatter = new BinaryFormatter();
+            try
+            {
+                using (FileStream fs = new FileStream("settings.dat", FileMode.Open))
+                {
+                    return (ObservableCollection<IAnalogSignal>)formatter.Deserialize(fs);
+                }
+            } catch
+            {
+                return null;
+            }
+        }
     }
 }

Signal Generator/Signal Generator.csproj

@@ -66,6 +66,7 @@
     <Compile Include="Signal\Base\Parameter.cs" />
     <Compile Include="Signal\SinusoidalSignal.cs" />
     <Compile Include="ArrayConverter.cs" />
+    <Compile Include="StringDoubleConverter.cs" />
     <Compile Include="TaskWindow.xaml.cs">
       <DependentUpon>TaskWindow.xaml</DependentUpon>
     </Compile>

Signal Generator/Signal/Base/AnalogSignalMethods.cs

@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class AnalogSignalMethods
     {
         protected string paramsToString(Collection<Parameter> paramsCollection)

Signal Generator/Signal/Base/Parameter.cs

@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class Parameter
     {
         public string name { get; set; }

Signal Generator/Signal/FmSignal.cs

@@ -7,20 +7,15 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class FmSignal : AnalogSignalMethods, IAnalogSignal
     {
         public Collection<Parameter> paramsCollection { get; set; }
 
-        public string typeToString
-        {
-            get { return "FM сигнал"; }
-        }
-
-        public new string paramsToString
-        {
-            get { return paramsToString(paramsCollection); }
-        }
+        public string typeToString => "FM сигнал"; 
 
+        public new string paramsToString => paramsToString(paramsCollection); 
+        
         public FmSignal(double ampl, double freq, double ampl2)
         {
             paramsCollection = new Collection<Parameter>();
@@ -32,7 +27,7 @@ namespace Signal_Generator
         public double currentAmplitude(double t)
         {
             var c = paramsCollection.ToArray<Parameter>();
-            return c[0].value * Math.Sin(2 * 3.14 * c[1].value* t + c[2].value * Math.Sin(t));
+            return c[0].value * Math.Sin(2 * 3.14 * c[1].value * t + c[2].value * Math.Sin(t));
         }
     }
 }

Signal Generator/Signal/MultiSignal.cs

@@ -10,11 +10,11 @@ namespace Signal_Generator
     public class MultiSignal : IAnalogSignal
     {
         private static MultiSignal instance;
-        private List<IAnalogSignal> signals { get; set; }
+        internal ObservableCollection<IAnalogSignal> signals { get; set; }
 
         private MultiSignal()
         {
-            signals = new List<IAnalogSignal>();
+            signals = new ObservableCollection<IAnalogSignal>();
         }
 
         public static MultiSignal getInstance()
@@ -24,17 +24,17 @@ namespace Signal_Generator
             return instance;
         }
 
-        internal void add(IAnalogSignal signal)
+        internal void Add(IAnalogSignal signal)
         {
             signals.Add(signal);
         }
 
-        internal void remove(IAnalogSignal signal)
+        internal void Remove(IAnalogSignal signal)
         {
             signals.Remove(signal);
         }
 
-        internal int count()
+        internal int Count()
         {
             return signals.Count();
         }
@@ -43,9 +43,7 @@ namespace Signal_Generator
         {
             double summaryAmplitude = 0;
             foreach (IAnalogSignal item in signals)
-            {
                 summaryAmplitude += item.currentAmplitude(t);
-            }
             return summaryAmplitude;
         }
 

Signal Generator/Signal/SinusoidalSignal.cs

@@ -7,17 +7,12 @@ using System.Threading.Tasks;
 
 namespace Signal_Generator
 {
+    [Serializable]
     class SinusoidalSignal : AnalogSignalMethods, IAnalogSignal
     {
-        public string typeToString
-        {
-            get { return "SIN сигнал"; }
-        }
+        public string typeToString => "SIN сигнал";
 
-        public new string paramsToString
-        {
-            get { return paramsToString(paramsCollection); }
-        }
+        public new string paramsToString => paramsToString(paramsCollection); 
 
         public Collection<Parameter> paramsCollection { get; set; }
 
@@ -32,7 +27,7 @@ namespace Signal_Generator
         public double currentAmplitude(double t)
         {
             var c = paramsCollection.ToArray<Parameter>();
-            return c[0].value * Math.Sin(2.0 * 3.14 * c[1].value * t + c[2].value);
+            return c[0].value * Math.Sin(2.0 * 3.14 * c[1].value * t + c[2].value * 180 / 3.14);
         }
     }
 }

Signal Generator/StringDoubleConverter.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace Signal_Generator
+{
+    class StringDoubleConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return ((double)value).ToString();
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return double.Parse((string)value);
+        }
+    }
+}

Signal Generator/TaskWindow.xaml

@@ -11,6 +11,7 @@
     <Window.Resources>
         <local:ProcedureModel x:Key="ProcedureModel"/>
         <local:ArrayConverter x:Key="ArrayConverter"/>
+        <local:StringDoubleConverter x:Key="StringDoubleConverter"/>
     </Window.Resources>
 
     <Grid Margin="10" Loaded="Grid_Loaded" DataContext="{Binding Source={StaticResource ProcedureModel}}">
@@ -19,6 +20,7 @@
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
         </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="*"/>
@@ -28,13 +30,16 @@
         </Grid.ColumnDefinitions>
 
         <Canvas x:Name="signalGraph_Canvas"  Background="AliceBlue" Grid.ColumnSpan="4" Margin="0,0,0,5" ClipToBounds="True"/>
-        <TextBlock x:Name="currentTime_TextBlock" Margin="0,0,5,5" Grid.Row="1" Grid.Column="1">Время выполения:</TextBlock>
+        <TextBlock x:Name="currentTime_TextBlock" Margin="0,0,5,5" Grid.Row="1" Grid.Column="1">Текущее время (t, мс):</TextBlock>
         <TextBox x:Name="currentTime_TextBox" Margin="0,0,0,5" Grid.Row="1" Grid.Column="2" IsEnabled="False" 
                  Text="{Binding Path=CurrentTime}"/>
-        <TextBlock x:Name="currentAmplitude_TextBlock" Margin="0,0,5,5" Grid.Row="2" Grid.Column="1">Текущий сигнал:</TextBlock>
+        <TextBlock x:Name="currentAmplitude_TextBlock" Margin="0,0,5,5" Grid.Row="2" Grid.Column="1">Текущая амплитуда (y(t), В):</TextBlock>
         <TextBox x:Name="currentAmplitude_TextBox"  Margin="0,0,0,5" Grid.Row="2" Grid.Column="2" IsEnabled="False" 
                  Text="{Binding Path=CurrentAmplitude}"/>
-        <Button x:Name="start_Button" Width="120" Content="Запустить" Margin="5,0" Grid.Row="3" Grid.Column="0" 
+        <TextBlock x:Name="duration_TextBlock" Margin="0,0,5,5" Grid.Row="3" Grid.Column="1">Длительность (мс):</TextBlock>
+        <TextBox x:Name="duration_TextBox"  Margin="0,0,0,5" Grid.Row="3" Grid.Column="2"
+                 Text="{Binding Duration, Converter={StaticResource StringDoubleConverter}, Mode=TwoWay}"/>
+        <Button x:Name="start_Button" Width="120" Content="Запустить" Margin="5,0" Grid.Row="4" Grid.Column="0" 
                 Grid.ColumnSpan="2" Command="{StaticResource ProcedureModel}">
             <Button.CommandParameter>
                 <MultiBinding Converter="{StaticResource ArrayConverter}">
@@ -45,7 +50,7 @@
                 </MultiBinding>
             </Button.CommandParameter>
         </Button>
-        <Button x:Name="pause_Button" Width="120" Content="Приостановить" Margin="5,0" Grid.Row="3" Grid.Column="2" 
+        <Button x:Name="pause_Button" Width="120" Content="Приостановить" Margin="5,0" Grid.Row="4" Grid.Column="2" 
                 Grid.ColumnSpan="2" Command="{StaticResource ProcedureModel}">
             <Button.CommandParameter>
                 <MultiBinding Converter="{StaticResource ArrayConverter}">