Добавлена переменная для длителельности выполнения процедуры, а также TextBox для ее задания + немного рефакторинга

Signal Generator/DrawTask.cs

@@ -57,8 +57,7 @@ namespace Signal_Generator
             double w = canvas.ActualWidth;
             for (int i = 0; i != (int)w; i++)
             {
-                procedureModel.CurrentAmplitude = multiSignal.currentAmplitude(i / 5.0).ToString();
-                procedureModel.CurrentTime = (i / 5.0).ToString();
+                updateTextBoxProps(multiSignal.currentAmplitude(i / 5.0), i / 5.0);
                 double y = multiSignal.currentAmplitude(i / 5.0);
                 drawLine(lastX, lastY, i, y);
                 lastX = i;
@@ -76,6 +75,12 @@ namespace Signal_Generator
             state = State.Finished;
         }
 
+        private void updateTextBoxProps(double amp, double time)
+        {
+            procedureModel.CurrentAmplitude = amp.ToString();
+            procedureModel.CurrentTime = time.ToString();
+        }
+
         private void drawLine(double x1, double y1, double x2, double y2)
         {
             Action a = () => {
@@ -83,18 +88,17 @@ 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/ProcedureModel.cs

@@ -167,5 +167,16 @@ namespace Signal_Generator
                 PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("CurrentTime"));
             }
         }
+
+        private double duration;
+        public double Duration
+        {
+            get { return duration; }
+            set
+            {
+                duration = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("CurrentTime"));
+            }
+        }
     }
 }

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/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="*"/>
@@ -34,7 +36,10 @@
         <TextBlock x:Name="currentAmplitude_TextBlock" Margin="0,0,5,5" Grid.Row="2" Grid.Column="1">Текущий сигнал:</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}">