diff --git a/FieldVisualizer/Entities/ColorMaps/Factories/ColorMapFactory.cs b/FieldVisualizer/Entities/ColorMaps/Factories/ColorMapFactory.cs
index e204fcb..b5c0010 100644
--- a/FieldVisualizer/Entities/ColorMaps/Factories/ColorMapFactory.cs
+++ b/FieldVisualizer/Entities/ColorMaps/Factories/ColorMapFactory.cs
@@ -7,6 +7,9 @@ using System.Windows.Media;
 
 namespace FieldVisualizer.Entities.ColorMaps.Factories
 {
+    /// <summary>
+    /// Factory for creating of different color maps
+    /// </summary>
     public static class ColorMapFactory
     {
         public static IColorMap GetColorMap(ColorMapsTypes mapsTypes)
diff --git a/FieldVisualizer/Entities/Values/Primitives/CirclePrimitive.cs b/FieldVisualizer/Entities/Values/Primitives/CirclePrimitive.cs
new file mode 100644
index 0000000..b44a723
--- /dev/null
+++ b/FieldVisualizer/Entities/Values/Primitives/CirclePrimitive.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FieldVisualizer.Entities.Values.Primitives
+{
+    public class CirclePrimitive : ICirclePrimitive
+    {
+        public double Diameter { get; set; }
+        public double Value { get; set; }
+        public double CenterX { get; set; }
+        public double CenterY { get; set; }
+        public double Area => Math.PI * Math.Pow(Diameter, 2) / 4;
+    }
+}
diff --git a/FieldVisualizer/Entities/Values/Primitives/ICirclePrimitive.cs b/FieldVisualizer/Entities/Values/Primitives/ICirclePrimitive.cs
new file mode 100644
index 0000000..af9d2d5
--- /dev/null
+++ b/FieldVisualizer/Entities/Values/Primitives/ICirclePrimitive.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FieldVisualizer.Entities.Values.Primitives
+{
+    /// <summary>
+    /// Represent circle primitive
+    /// </summary>
+    public interface ICirclePrimitive : IValuePrimitive
+    {
+        double Diameter { get; set; }
+    }
+}
diff --git a/FieldVisualizer/Entities/Values/Primitives/IValuePrimitive.cs b/FieldVisualizer/Entities/Values/Primitives/IValuePrimitive.cs
index 93a36f9..57cbda4 100644
--- a/FieldVisualizer/Entities/Values/Primitives/IValuePrimitive.cs
+++ b/FieldVisualizer/Entities/Values/Primitives/IValuePrimitive.cs
@@ -11,5 +11,6 @@ namespace FieldVisualizer.Entities.Values.Primitives
         double Value { get; }
         double CenterX { get; }
         double CenterY { get; }
+        double Area { get; }
     }
 }
diff --git a/FieldVisualizer/Entities/Values/Primitives/RectanglePrimitive.cs b/FieldVisualizer/Entities/Values/Primitives/RectanglePrimitive.cs
index 134d596..d4d2ae5 100644
--- a/FieldVisualizer/Entities/Values/Primitives/RectanglePrimitive.cs
+++ b/FieldVisualizer/Entities/Values/Primitives/RectanglePrimitive.cs
@@ -13,5 +13,6 @@ namespace FieldVisualizer.Entities.Values.Primitives
         public double Value { get; set; }
         public double CenterX { get; set; }
         public double CenterY { get; set; }
+        public double Area => Height * Width;
     }
 }
diff --git a/FieldVisualizer/InfraStructures/Comands/RelayCommand.cs b/FieldVisualizer/InfraStructures/Comands/RelayCommand.cs
new file mode 100644
index 0000000..130de8f
--- /dev/null
+++ b/FieldVisualizer/InfraStructures/Comands/RelayCommand.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Windows.Input;
+
+namespace FieldVisualizer.Infrastructure.Commands
+{
+    public class RelayCommand : ICommand
+    {
+        private Action<object> execute;
+        private Func<object, bool> canExecute;
+
+        public event EventHandler CanExecuteChanged
+        {
+            add => CommandManager.RequerySuggested += value;
+            remove => CommandManager.RequerySuggested -= value;
+        }
+
+        public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
+        {
+            this.execute = execute;
+            this.canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => canExecute == null || canExecute(parameter);
+
+        public void Execute(object parameter) => execute(parameter);
+    }
+}
diff --git a/FieldVisualizer/InfraStructures/Strings/ErrorStrings.cs b/FieldVisualizer/InfraStructures/Strings/ErrorStrings.cs
index 2531717..dd2e0da 100644
--- a/FieldVisualizer/InfraStructures/Strings/ErrorStrings.cs
+++ b/FieldVisualizer/InfraStructures/Strings/ErrorStrings.cs
@@ -7,5 +7,6 @@ namespace FieldVisualizer.InfraStructures.Strings
     public static class ErrorStrings
     {
         public static string ColorMapTypeIsUnknown => "#0001: ColorMap type is unknown";
+        public static string PrimitiveTypeIsUnknown => "#0002: Type of primitive is unknown";
     }
 }
diff --git a/FieldVisualizer/Services/ColorServices/ColorOperations.cs b/FieldVisualizer/Services/ColorServices/ColorOperations.cs
index c444279..17f0386 100644
--- a/FieldVisualizer/Services/ColorServices/ColorOperations.cs
+++ b/FieldVisualizer/Services/ColorServices/ColorOperations.cs
@@ -12,17 +12,19 @@ namespace FieldVisualizer.Services.ColorServices
         const byte Alpha = 0xff;
         public static Color GetColorByValue(IValueRange range, IColorMap map, double val)
         {
-            double minVal = range.BottomValue;
-            double maxVal = range.TopValue;
+            double minVal = range.BottomValue - 1e-15d*(Math.Abs(range.BottomValue));
+            double maxVal = range.TopValue + 1e-15d * (Math.Abs(range.TopValue));
             if (range.TopValue == minVal || map.Colors.Count == 0) { return map.Colors[0]; }
             if (val > maxVal || val < minVal) { return Colors.Gray; }
             if (val == minVal) { return map.Colors[0]; }
             if (val == maxVal) { return map.Colors[map.Colors.Count - 1]; }
 
             double valPerc = (val - minVal) / (maxVal - minVal);// value%
-            double colorPerc = 1d / (map.Colors.Count - 1); // % of each block of color. the last is the "100% Color"
+            //if (valPerc == 1d)
+            //{ return map.Colors[map.Colors.Count - 1]; }
+            double colorPerc = 1d / (map.Colors.Count - 1d); // % of each block of color. the last is the "100% Color"
             double blockOfColor = valPerc / colorPerc;// the integer part repersents how many block to skip
-            int blockIdx = (int)Math.Truncate(blockOfColor);// Idx of 
+            int blockIdx = (int)Math.Truncate(blockOfColor);// Idx of
             double valPercResidual = valPerc - (blockIdx * colorPerc);//remove the part represented of block 
             double percOfColor = valPercResidual / colorPerc;// % of color of this block that will be filled
 
diff --git a/FieldVisualizer/Services/PrimitiveServices/PrimitiveOperations.cs b/FieldVisualizer/Services/PrimitiveServices/PrimitiveOperations.cs
index a476d05..c043a8c 100644
--- a/FieldVisualizer/Services/PrimitiveServices/PrimitiveOperations.cs
+++ b/FieldVisualizer/Services/PrimitiveServices/PrimitiveOperations.cs
@@ -1,5 +1,7 @@
 using FieldVisualizer.Entities.Values;
 using FieldVisualizer.Entities.Values.Primitives;
+using FieldVisualizer.InfraStructures.Exceptions;
+using FieldVisualizer.InfraStructures.Strings;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,7 +13,7 @@ namespace FieldVisualizer.Services.PrimitiveServices
 {
     public static class PrimitiveOperations
     {
-        public static IValueRange GetValuRange(IEnumerable<IValuePrimitive> valuePrimitives)
+        public static IValueRange GetValueRange(IEnumerable<IValuePrimitive> valuePrimitives)
         {
             double minVal =0d, maxVal = 0d;
             foreach (var primitive in valuePrimitives)
@@ -57,6 +59,13 @@ namespace FieldVisualizer.Services.PrimitiveServices
                     coords.Add(rectanglePrimitive.CenterX + rectanglePrimitive.Width / 2);
                     coords.Add(rectanglePrimitive.CenterX - rectanglePrimitive.Width / 2);
                 }
+                else if (primitive is ICirclePrimitive)
+                {
+                    ICirclePrimitive circlePrimitive = primitive as ICirclePrimitive;
+                    coords.Add(circlePrimitive.CenterX + circlePrimitive.Diameter / 2);
+                    coords.Add(circlePrimitive.CenterX - circlePrimitive.Diameter / 2);
+                }
+                else { throw new FieldVisulizerException(ErrorStrings.PrimitiveTypeIsUnknown);}
             }
             return coords;
         }
@@ -72,6 +81,13 @@ namespace FieldVisualizer.Services.PrimitiveServices
                     coords.Add(rectanglePrimitive.CenterY + rectanglePrimitive.Height / 2);
                     coords.Add(rectanglePrimitive.CenterY - rectanglePrimitive.Height / 2);
                 }
+                else if (primitive is ICirclePrimitive)
+                {
+                    ICirclePrimitive circlePrimitive = primitive as ICirclePrimitive;
+                    coords.Add(circlePrimitive.CenterY + circlePrimitive.Diameter / 2);
+                    coords.Add(circlePrimitive.CenterY - circlePrimitive.Diameter / 2);
+                }
+                else { throw new FieldVisulizerException(ErrorStrings.PrimitiveTypeIsUnknown); }
             }
             return coords;
         }
diff --git a/FieldVisualizer/Services/ValueRanges/ValueRangeOperations.cs b/FieldVisualizer/Services/ValueRanges/ValueRangeOperations.cs
index a88f302..bdd6adb 100644
--- a/FieldVisualizer/Services/ValueRanges/ValueRangeOperations.cs
+++ b/FieldVisualizer/Services/ValueRanges/ValueRangeOperations.cs
@@ -20,10 +20,11 @@ namespace FieldVisualizer.Services.ValueRanges
             else
             {
                 double dVal = (valueRange.TopValue - valueRange.BottomValue) / divisionNumber;
-                double currentBottom = valueRange.BottomValue;
+                double startBottom = valueRange.BottomValue;
                 for (int i = 0; i < divisionNumber; i++ )
                 {
-                    currentBottom = i * dVal;
+                    
+                    double currentBottom = startBottom + i * dVal;
                     var newRange = new ValueRange() { BottomValue = currentBottom, TopValue = currentBottom + dVal };
                     valueRanges.Add(newRange);
                 }
diff --git a/FieldVisualizer/Windows/UserControls/FieldViewer.xaml b/FieldVisualizer/Windows/UserControls/FieldViewer.xaml
index a6ee17a..6ba2b54 100644
--- a/FieldVisualizer/Windows/UserControls/FieldViewer.xaml
+++ b/FieldVisualizer/Windows/UserControls/FieldViewer.xaml
@@ -17,10 +17,10 @@
                 <RowDefinition/>
             </Grid.RowDefinitions>
             <StackPanel Orientation="Horizontal">
-                <Button x:Name="RebuildButton" Content="Rebuild" Click="RebuildButton_Click"/>
-                <Button x:Name="ZoomInButton" Content="ZoomIn" Click="ZoomInButton_Click"/>
-                <Button x:Name="ZoomOutButton" Content="ZoomOut" Click="ZoomOutButton_Click"/>
-                <Button x:Name="ChangeColorMapButton" Content="ColorMap" Click="ChangeColorMapButton_Click"/>
+                <Button x:Name="RebuildButton" Content="Rebuild" Command="{Binding RebuildCommand}"/>
+                <Button x:Name="ZoomInButton" Content="ZoomIn" Command="{Binding ZoomInCommand}"/>
+                <Button x:Name="ZoomOutButton" Content="ZoomOut" Command="{Binding ZoomOutCommand}"/>
+                <Button x:Name="ChangeColorMapButton" Content="ColorMap" Command="{Binding ChangeColorMapCommand}"/>
             </StackPanel>
             <ScrollViewer Name="WorkPlaneViewer" Grid.Row="1" HorizontalScrollBarVisibility="Visible">
                 <ScrollViewer.Background>
diff --git a/FieldVisualizer/Windows/UserControls/FieldViewer.xaml.cs b/FieldVisualizer/Windows/UserControls/FieldViewer.xaml.cs
index fd1dffd..9dcd8da6 100644
--- a/FieldVisualizer/Windows/UserControls/FieldViewer.xaml.cs
+++ b/FieldVisualizer/Windows/UserControls/FieldViewer.xaml.cs
@@ -2,25 +2,20 @@
 using FieldVisualizer.Entities.ColorMaps.Factories;
 using FieldVisualizer.Entities.Values;
 using FieldVisualizer.Entities.Values.Primitives;
+using FieldVisualizer.Infrastructure.Commands;
 using FieldVisualizer.InfraStructures.Enums;
+using FieldVisualizer.InfraStructures.Exceptions;
+using FieldVisualizer.InfraStructures.Strings;
 using FieldVisualizer.Services.ColorServices;
 using FieldVisualizer.Services.PrimitiveServices;
 using FieldVisualizer.Services.ValueRanges;
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
-using System.Drawing.Imaging;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
 using System.Windows.Shapes;
 
 namespace FieldVisualizer.Windows.UserControls
@@ -30,7 +25,12 @@ namespace FieldVisualizer.Windows.UserControls
     /// </summary>
     public partial class FieldViewer : UserControl
     {
-        public IPrimitiveSet _PrimitiveSet { get; set; }
+        public ICommand RebuildCommand { get; }
+        public ICommand ZoomInCommand { get; }
+        public ICommand ZoomOutCommand { get; }
+        public ICommand ChangeColorMapCommand { get; }
+
+        public IPrimitiveSet PrimitiveSet { get; set; }
         private double dX, dY;
         private ColorMapsTypes _ColorMapType;
         private IColorMap _ColorMap;
@@ -43,34 +43,38 @@ namespace FieldVisualizer.Windows.UserControls
         {
             InitializeComponent();
             _ColorMapType = ColorMapsTypes.FullSpectrum;
+            DataContext = this;
+            RebuildCommand = new RelayCommand(o => ProcessPrimitives(), o => PrimitiveValidation());
+            ZoomInCommand = new RelayCommand(o => Zoom(1.2), o => PrimitiveValidation());
+            ZoomOutCommand = new RelayCommand(o => Zoom(0.8), o => PrimitiveValidation());
+            ChangeColorMapCommand = new RelayCommand(o => ChangeColorMap(), o => PrimitiveValidation());
         }
-
         public void Refresh()
         {
-            _ValueRange = PrimitiveOperations.GetValuRange(_PrimitiveSet.ValuePrimitives);
+            if (PrimitiveValidation() == false) { return; }
+            _ValueRange = PrimitiveOperations.GetValueRange(PrimitiveSet.ValuePrimitives);
             _ValueRanges = ValueRangeOperations.DivideValueRange(_ValueRange, RangeNumber);
             _ColorMap = ColorMapFactory.GetColorMap(_ColorMapType);
             _ValueColorRanges = ColorOperations.GetValueColorRanges(_ValueRange, _ValueRanges, _ColorMap);
-            if ((_PrimitiveSet is null) == false)
+            if ((PrimitiveSet is null) == false)
             {
                 ProcessPrimitives();
                 LegendViewer.ValueColorRanges = _ValueColorRanges;
                 LegendViewer.Refresh();
             }
         }
-
         private void ProcessPrimitives()
         {
             WorkPlaneCanvas.Children.Clear();
-            double sizeX = PrimitiveOperations.GetSizeX(_PrimitiveSet.ValuePrimitives);
-            double sizeY = PrimitiveOperations.GetSizeY(_PrimitiveSet.ValuePrimitives);
-            dX = PrimitiveOperations.GetMinMaxX(_PrimitiveSet.ValuePrimitives)[0];
-            dY = PrimitiveOperations.GetMinMaxY(_PrimitiveSet.ValuePrimitives)[0];
+            double sizeX = PrimitiveOperations.GetSizeX(PrimitiveSet.ValuePrimitives);
+            double sizeY = PrimitiveOperations.GetSizeY(PrimitiveSet.ValuePrimitives);
+            dX = PrimitiveOperations.GetMinMaxX(PrimitiveSet.ValuePrimitives)[0];
+            dY = PrimitiveOperations.GetMinMaxY(PrimitiveSet.ValuePrimitives)[0];
             WorkPlaneCanvas.Width = Math.Abs(sizeX);
             WorkPlaneCanvas.Height = Math.Abs(sizeY);
             WorkPlaneBox.Width = WorkPlaneViewer.ActualWidth - 50;
             WorkPlaneBox.Height = WorkPlaneViewer.ActualHeight - 50;
-            foreach (var primitive in _PrimitiveSet.ValuePrimitives)
+            foreach (var primitive in PrimitiveSet.ValuePrimitives)
             {
                 if (primitive is IRectanglePrimitive)
                 {
@@ -78,58 +82,77 @@ namespace FieldVisualizer.Windows.UserControls
                     Rectangle rectangle = ProcessRectanglePrimitive(rectanglePrimitive);
                     WorkPlaneCanvas.Children.Add(rectangle);
                 }
+                else if (primitive is ICirclePrimitive)
+                {
+                    ICirclePrimitive circlePrimitive = primitive as ICirclePrimitive;
+                    Ellipse ellipse = ProcessCirclePrimitive(circlePrimitive);
+                    WorkPlaneCanvas.Children.Add(ellipse);
+                }
+                else { throw new FieldVisulizerException(ErrorStrings.PrimitiveTypeIsUnknown);}
             }
         }
-
-        private void WorkPlaneBox_MouseWheel(object sender, MouseWheelEventArgs e)
-        {
-            WorkPlaneBox.Height *= WorkPlaneBox.ActualHeight * 0.5;
-            WorkPlaneBox.Width *= WorkPlaneBox.ActualWidth * 0.5;
-        }
-
         private Rectangle ProcessRectanglePrimitive(IRectanglePrimitive rectanglePrimitive)
         {
-            Rectangle rectangle = new Rectangle();
-            rectangle.Height = rectanglePrimitive.Height;
-            rectangle.Width = rectanglePrimitive.Width;
+            Rectangle rectangle = new Rectangle
+            {
+                Height = rectanglePrimitive.Height,
+                Width = rectanglePrimitive.Width
+            };
+            double addX = rectanglePrimitive.Width / 2;
+            double addY = rectanglePrimitive.Height / 2;
+            ProcessShape(rectangle, rectanglePrimitive, addX, addY);
+            return rectangle;
+        }
+        private Ellipse ProcessCirclePrimitive(ICirclePrimitive circlePrimitive)
+        {
+            Ellipse ellipse = new Ellipse
+            {
+                Height = circlePrimitive.Diameter,
+                Width = circlePrimitive.Diameter
+            };
+            double addX = circlePrimitive.Diameter / 2;
+            double addY = circlePrimitive.Diameter / 2;
+
+            ProcessShape(ellipse, circlePrimitive, addX, addY);
+            return ellipse;
+        }
+        private void ProcessShape(Shape shape, IValuePrimitive valuePrimitive, double addX, double addY)
+        {
             SolidColorBrush brush = new SolidColorBrush();
-            brush.Color = ColorOperations.GetColorByValue(_ValueRange, _ColorMap, rectanglePrimitive.Value);
+            brush.Color = ColorOperations.GetColorByValue(_ValueRange, _ColorMap, valuePrimitive.Value);
             foreach (var valueRange in _ValueColorRanges)
             {
-                if (rectanglePrimitive.Value >= valueRange.BottomValue & rectanglePrimitive.Value <= valueRange.TopValue & (! valueRange.IsActive))
+                if (valuePrimitive.Value >= valueRange.BottomValue & valuePrimitive.Value <= valueRange.TopValue & (!valueRange.IsActive))
                 {
                     brush.Color = Colors.Gray;
                 }
             }
-            rectangle.ToolTip = rectanglePrimitive.Value;
-            rectangle.Fill = brush;
-            Canvas.SetLeft(rectangle, rectanglePrimitive.CenterX - dX);
-            Canvas.SetTop(rectangle, rectanglePrimitive.CenterY - dY);
-            return rectangle;
+            shape.ToolTip = valuePrimitive.Value;
+            shape.Tag = valuePrimitive;
+            shape.Fill = brush;
+            Canvas.SetLeft(shape, valuePrimitive.CenterX - addX - dX);
+            Canvas.SetTop(shape, valuePrimitive.CenterY - addY - dY);
         }
-
-        private void RebuildButton_Click(object sender, RoutedEventArgs e)
+        private void Zoom(double coefficient)
         {
-            ProcessPrimitives();
+            WorkPlaneBox.Width *= coefficient;
+            WorkPlaneBox.Height *= coefficient;
         }
-
-        private void ZoomInButton_Click(object sender, RoutedEventArgs e)
+        private void ChangeColorMap()
         {
-            WorkPlaneBox.Width *= 1.2;
-            WorkPlaneBox.Height *= 1.2;
-        }
-
-        private void ChangeColorMapButton_Click(object sender, RoutedEventArgs e)
-        {
-            if (_ColorMapType < ColorMapsTypes.BlueToWhite) { _ColorMapType++;}
-            else { _ColorMapType = 0;}
+            //Iterate all available color maps one by one
+            try
+            {
+                _ColorMapType++;
+                IColorMap colorMap = ColorMapFactory.GetColorMap(_ColorMapType);
+            }
+            catch (Exception ex) { _ColorMapType = 0; }
             Refresh();
         }
-
-        private void ZoomOutButton_Click(object sender, RoutedEventArgs e)
+        private bool PrimitiveValidation()
         {
-            WorkPlaneBox.Width *= 0.8;
-            WorkPlaneBox.Height *= 0.8;
+            if (PrimitiveSet == null || PrimitiveSet.ValuePrimitives.Count() == 0) { return false; }
+            else return true;
         }
     }
 }
diff --git a/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml b/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
index 8b3dfb0..b982c83 100644
--- a/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
+++ b/FieldVisualizer/Windows/UserControls/VerticalLegend.xaml
@@ -8,6 +8,7 @@
              d:DesignHeight="450" d:DesignWidth="800">
     <Grid x:Name="grid">
         <StackPanel>
+            <TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF868686"></TextBlock>
             <ListBox Name="LegendBox" ItemsSource="{Binding}">
                 <ListBox.ItemTemplate>
                     <DataTemplate>
@@ -32,6 +33,7 @@
                                     </LinearGradientBrush>
                                 </Rectangle.Fill>
                             </Rectangle>
+                            <TextBlock Grid.Column="2" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF868686" Text="{Binding AverageValue}"/>
                             <Rectangle Grid.Column="3" Margin="0,2,0,2" ToolTip="{Binding Path=TopValue}">
                                 <Rectangle.Fill>
                                     <SolidColorBrush Color="{Binding Path=TopColor}"/>
diff --git a/FieldVisualizer/Windows/WndFieldViewer.xaml.cs b/FieldVisualizer/Windows/WndFieldViewer.xaml.cs
index a1b6fd2..01cae36 100644
--- a/FieldVisualizer/Windows/WndFieldViewer.xaml.cs
+++ b/FieldVisualizer/Windows/WndFieldViewer.xaml.cs
@@ -2,6 +2,7 @@
 using FieldVisualizer.Windows.UserControls;
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -21,20 +22,27 @@ namespace FieldVisualizer.Windows
     /// </summary>
     public partial class WndFieldViewer : Window
     {
+        public ObservableCollection<IPrimitiveSet> PrimitiveSets { get; private set; }
         public WndFieldViewer(IEnumerable<IPrimitiveSet> primitiveSets)
         {
             InitializeComponent();
-            this.DataContext = primitiveSets;
+            PrimitiveSets = new ObservableCollection<IPrimitiveSet>();
             foreach (var primitiveSet in primitiveSets)
             {
-                FieldViewerControl._PrimitiveSet = primitiveSet;
+                PrimitiveSets.Add(primitiveSet);
             }
+            this.DataContext = PrimitiveSets;
 
         }
 
         private void SetsList_SelectionChanged(object sender, SelectionChangedEventArgs e)
         {
-            FieldViewerControl.Refresh();
+            ListBox lb = sender as ListBox;
+            if (lb.SelectedItem != null)
+            {
+                FieldViewerControl.PrimitiveSet = lb.SelectedItem as IPrimitiveSet;
+                FieldViewerControl.Refresh();
+            }
         }
     }
 }
diff --git a/FiledVisualzerDemo/DemoForm.cs b/FiledVisualzerDemo/DemoForm.cs
index a6ea3dc..9f926f3 100644
--- a/FiledVisualzerDemo/DemoForm.cs
+++ b/FiledVisualzerDemo/DemoForm.cs
@@ -26,18 +26,33 @@ namespace FiledVisualzerDemo
             int jmax = 100;
             PrimitiveSet primitiveSet = new PrimitiveSet();
             primitiveSets.Add(primitiveSet);
-            primitiveSets.Add(primitiveSet);
             List<IValuePrimitive> primitives = new List<IValuePrimitive>();
             primitiveSet.ValuePrimitives = primitives;
-            for (int i = 0; i < imax; i++ )
+            IValuePrimitive primitive;
+            for (int i = 0; i < imax; i++)
             {
                 for (int j = 0; j < jmax; j++)
                 {
-                    IValuePrimitive primitive = new RectanglePrimitive() { Height = 10, Width = 20, CenterX = - 20 * i, CenterY = - 10 * j, Value = i + j };
+                    primitive = new RectanglePrimitive() { Height = 10, Width = 20, CenterX = 20 * i, CenterY = 10 * j, Value = -(i + j) };
                     primitives.Add(primitive);
                 }
             }
-
+            for (int i = 0; i < 2; i++)
+            {
+                for (int j = 0; j < 2; j++)
+                {
+                    primitive = new CirclePrimitive() { Diameter = 150, CenterX = -200 * i, CenterY = -100 * j, Value = i * 100 + j * 200 };
+                    primitives.Add(primitive);
+                }
+            }
+            primitiveSet = new PrimitiveSet();
+            primitives = new List<IValuePrimitive>();
+            primitive = new RectanglePrimitive() { Height = 100, Width = 200, CenterX = 0, CenterY = 0, Value = 100 };
+            primitives.Add(primitive);
+            primitive = new CirclePrimitive() { Diameter = 50, CenterX = 0, CenterY = 0, Value = -100 };
+            primitives.Add(primitive);
+            primitiveSet.ValuePrimitives = primitives;
+            primitiveSets.Add(primitiveSet);
             FieldViewerOperation.ShowViewer(primitiveSets);
         }
     }
diff --git a/Infrastructure/UI/DataContexts/Rectangle.cs b/Infrastructure/UI/DataContexts/Rectangle.cs
index 273266d..b8c5ef9 100644
--- a/Infrastructure/UI/DataContexts/Rectangle.cs
+++ b/Infrastructure/UI/DataContexts/Rectangle.cs
@@ -49,7 +49,7 @@ namespace StructureHelper.Infrastructure.UI.DataContexts
             ICenter center = new Center { X = centerX, Y = centerY };
             IShape shape = new StructureHelperCommon.Models.Shapes.Rectangle { Height = height, Width = width, Angle = 0 };
             IPrimitiveMaterial primitiveMaterial = new PrimitiveMaterial { MaterialType = GetMaterialTypes(), ClassName = materialName, Strength = Material.DesignCompressiveStrength };
-            INdmPrimitive ndmPrimitive = new NdmPrimitive { Center = center, Shape = shape, PrimitiveMaterial = primitiveMaterial, NdmMaxSize = 1, NdmMinDivision = 20 };
+            INdmPrimitive ndmPrimitive = new NdmPrimitive { Center = center, Shape = shape, PrimitiveMaterial = primitiveMaterial, NdmMaxSize = 0.01, NdmMinDivision = 20 };
             return ndmPrimitive;
         }
     }
diff --git a/Libraries/LoaderCalculator.dll b/Libraries/LoaderCalculator.dll
index d2054c8..90717a7 100644
Binary files a/Libraries/LoaderCalculator.dll and b/Libraries/LoaderCalculator.dll differ
diff --git a/Services/ResultViewers/IResultFunc.cs b/Services/ResultViewers/IResultFunc.cs
new file mode 100644
index 0000000..a42b8b0
--- /dev/null
+++ b/Services/ResultViewers/IResultFunc.cs
@@ -0,0 +1,16 @@
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Services.ResultViewers
+{
+    public interface IResultFunc
+    {
+        string Name { get; }
+        Func<IStrainMatrix, INdm, double> ResultFunction { get; }
+    }
+}
diff --git a/Services/ResultViewers/ResultFunc.cs b/Services/ResultViewers/ResultFunc.cs
new file mode 100644
index 0000000..e9812fb
--- /dev/null
+++ b/Services/ResultViewers/ResultFunc.cs
@@ -0,0 +1,16 @@
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Services.ResultViewers
+{
+    public class ResultFunc : IResultFunc
+    {
+        public string Name { get; set; }
+        public Func<IStrainMatrix, INdm, double> ResultFunction { get; set; }
+    }
+}
diff --git a/Services/ResultViewers/ResultFuncFactory.cs b/Services/ResultViewers/ResultFuncFactory.cs
new file mode 100644
index 0000000..d22ad8d
--- /dev/null
+++ b/Services/ResultViewers/ResultFuncFactory.cs
@@ -0,0 +1,23 @@
+using LoaderCalculator.Logics;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Services.ResultViewers
+{
+    public static class ResultFuncFactory
+    {
+        public static IEnumerable<IResultFunc> GetResultFuncs()
+        {
+            List<IResultFunc> resultFuncs = new List<IResultFunc>();
+            IStressLogic stressLogic = new StressLogic();
+            resultFuncs.Add(new ResultFunc() { Name = "Total Strain", ResultFunction = stressLogic.GetTotalStrain });
+            resultFuncs.Add(new ResultFunc() { Name = "Elastic Srtain", ResultFunction = stressLogic.GetElasticStrain });
+            resultFuncs.Add(new ResultFunc() { Name = "Plastic Strain", ResultFunction = stressLogic.GetPlasticStrain });
+            resultFuncs.Add(new ResultFunc() { Name = "Stress", ResultFunction = stressLogic.GetStress });
+            return resultFuncs;
+        }
+    }
+}
diff --git a/Services/ResultViewers/ShowIsoFieldResult.cs b/Services/ResultViewers/ShowIsoFieldResult.cs
new file mode 100644
index 0000000..9a83db8
--- /dev/null
+++ b/Services/ResultViewers/ShowIsoFieldResult.cs
@@ -0,0 +1,46 @@
+using FieldVisualizer.Entities.Values.Primitives;
+using FieldVisualizer.WindowsOperation;
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using LoaderCalculator.Data.ResultData;
+using LoaderCalculator.Logics;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Services.ResultViewers
+{
+    public static class ShowIsoFieldResult
+    {
+        public static void ShowResult(IStrainMatrix strainMatrix, IEnumerable<INdm> ndms, IEnumerable<IResultFunc> resultFuncs)
+        {
+            List<IPrimitiveSet> primitiveSets = new List<IPrimitiveSet>();
+            foreach (var valDelegate in resultFuncs)
+            {
+                PrimitiveSet primitiveSet = new PrimitiveSet() { Name = valDelegate.Name };
+                List<IValuePrimitive> primitives = new List<IValuePrimitive>();
+                foreach (INdm ndm in ndms)
+                {
+                    double val = valDelegate.ResultFunction.Invoke(strainMatrix, ndm);
+                    IValuePrimitive valuePrimitive;
+                    if (ndm is IRectangleNdm)
+                    {
+                        var shapeNdm = ndm as IRectangleNdm;
+                        valuePrimitive = new RectanglePrimitive() { CenterX = ndm.CenterX, CenterY = ndm.CenterY, Height = shapeNdm.Height, Width = shapeNdm.Width, Value = val };
+                    }
+                    else
+                    {
+                        valuePrimitive = new CirclePrimitive() { CenterX = ndm.CenterX, CenterY = ndm.CenterY, Diameter = Math.Sqrt(ndm.Area / Math.PI) * 2, Value = val };
+                    }
+                    primitives.Add(valuePrimitive);
+                }
+                primitiveSet.ValuePrimitives = primitives;
+                primitiveSets.Add(primitiveSet);
+            }
+
+            FieldViewerOperation.ShowViewer(primitiveSets);
+        }
+    }
+}
diff --git a/StructureHelper.csproj b/StructureHelper.csproj
index 8d1771d..d20e7d0 100644
--- a/StructureHelper.csproj
+++ b/StructureHelper.csproj
@@ -100,6 +100,10 @@
       <DependentUpon>PrimitivePopup.xaml</DependentUpon>
     </Compile>
     <Compile Include="Services\PrimitiveService.cs" />
+    <Compile Include="Services\ResultViewers\IResultFunc.cs" />
+    <Compile Include="Services\ResultViewers\ResultFunc.cs" />
+    <Compile Include="Services\ResultViewers\ResultFuncFactory.cs" />
+    <Compile Include="Services\ResultViewers\ShowIsoFieldResult.cs" />
     <Compile Include="UnitSystem\UnitSystemService.cs" />
     <Compile Include="UnitSystem\Enums\SystemTypes.cs" />
     <Compile Include="UnitSystem\Systems\SystemSi.cs" />
@@ -193,6 +197,10 @@
     <Folder Include="Logics\" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="FieldVisualizer\FieldVisualizer.csproj">
+      <Project>{87064B50-3B7C-4A91-AF4A-941C6F95D997}</Project>
+      <Name>FieldVisualizer</Name>
+    </ProjectReference>
     <ProjectReference Include="StructureHelperCommon\StructureHelperCommon.csproj">
       <Project>{5dfec3fd-9677-47bb-9e88-eb71828b5913}</Project>
       <Name>StructureHelperCommon</Name>
diff --git a/StructureHelperTests/FieldsVisualizerTests/ColorOperationTests/GetColorByValueTest.cs b/StructureHelperTests/FieldsVisualizerTests/ColorOperationTests/GetColorByValueTest.cs
index fc874d4..55dd340 100644
--- a/StructureHelperTests/FieldsVisualizerTests/ColorOperationTests/GetColorByValueTest.cs
+++ b/StructureHelperTests/FieldsVisualizerTests/ColorOperationTests/GetColorByValueTest.cs
@@ -20,15 +20,18 @@ namespace StructureHelperTests.FieldsVisualizerTests.ColorOperationTests
             valueRange = new ValueRange() { BottomValue = 0, TopValue = 100 };
         }
 
-        [TestCase(-10, 255, 128, 128, 128)] //Gray as less than minimum
-        [TestCase(0, 255, 255, 128, 128)]
-        [TestCase(50, 255, 255, 255, 0)]
-        [TestCase(100, 255, 0, 0, 255)]//Blue
-        [TestCase(110, 255,128, 128, 128)] //Gray as greater than maximum
-        public void Run_ShouldPass(double val, int expectedA, int expectedR, int expectedG, int expectedB)
+        [TestCase(0, 100, -10, 255, 128, 128, 128)] //Gray as less than minimum
+        [TestCase(0, 100, 0, 255, 255, 128, 128)]
+        [TestCase(0, 100, 50, 255, 255, 255, 0)]
+        [TestCase(0, 100, 100, 255, 0, 0, 255)]//Blue
+        [TestCase(0, 100, 110, 255,128, 128, 128)] //Gray as greater than maximum
+        [TestCase(-100, 100, 110, 255, 128, 128, 128)] //Gray as greater than maximum
+        [TestCase(-100, 100, 100, 255, 0, 0, 255)]//Blue
+        [TestCase(100, 100, -100, 255, 255, 128, 128)]
+        public void Run_ShouldPass(double bottomVal, double topVal, double val, int expectedA, int expectedR, int expectedG, int expectedB)
         {
             //Arrange
-
+            valueRange = new ValueRange() { BottomValue = bottomVal, TopValue = topVal };
             //Act
             var result = ColorOperations.GetColorByValue(valueRange, FullSpectrum, val);
             var actualA = result.A;
diff --git a/StructureHelperTests/StructureHelperTests.csproj b/StructureHelperTests/StructureHelperTests.csproj
index aaa09df..be28779 100644
--- a/StructureHelperTests/StructureHelperTests.csproj
+++ b/StructureHelperTests/StructureHelperTests.csproj
@@ -94,6 +94,9 @@
       <Name>StructureHelperLogics</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="FieldsVisualizerTests\WindowTests\" />
+  </ItemGroup>
   <Import Project="$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets" Condition="Exists('$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets')" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
diff --git a/Windows/MainWindow/MainModel.cs b/Windows/MainWindow/MainModel.cs
index 320d936..fb4f95f 100644
--- a/Windows/MainWindow/MainModel.cs
+++ b/Windows/MainWindow/MainModel.cs
@@ -1,8 +1,18 @@
-using LoaderCalculator.Data.Matrix;
+using LoaderCalculator;
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using LoaderCalculator.Data.ResultData;
+using LoaderCalculator.Data.SourceData;
 using StructureHelper.Services;
 using StructureHelper.UnitSystem;
+using StructureHelper.UnitSystem.Systems;
+using StructureHelperLogics.Infrastructures.CommonEnums;
+using StructureHelperLogics.NdmCalculations.Triangulations;
 using StructureHelperLogics.Services;
+using System.Collections;
+using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 
 namespace StructureHelper.Windows.MainWindow
 {
@@ -26,5 +36,39 @@ namespace StructureHelper.Windows.MainWindow
                 .Select(x => x.GetNdmPrimitive(unitSystem))
                 .Concat(primitiveRepository.GetPoints().Select(x => x.GetNdmPrimitive(unitSystem))).ToArray(), mx, my, nz);
         }
+
+        public IEnumerable<INdm> GetNdms()
+        {
+            var unitSystem = unitSystemService.GetCurrentSystem();
+            var ndmPrimitives = primitiveRepository.GetRectangles()
+                .Select(x => x.GetNdmPrimitive(unitSystem))
+                .Concat(primitiveRepository.GetPoints().Select(x => x.GetNdmPrimitive(unitSystem))).ToArray();
+
+            //Настройки триангуляции, пока опции могут быть только такие
+            ITriangulationOptions options = new TriangulationOptions { LimiteState = LimitStates.Collapse, CalcTerm = CalcTerms.ShortTerm };
+
+            //Формируем коллекцию элементарных участков для расчета в библитеке (т.е. выполняем триангуляцию)
+            List<INdm> ndmCollection = new List<INdm>();
+            ndmCollection.AddRange(Triangulation.GetNdms(ndmPrimitives, options));
+
+            return ndmCollection;
+        }
+
+        public ILoaderResults CalculateResult(IEnumerable<INdm> ndmCollection, IForceMatrix forceMatrix)
+        {
+            var loaderData = new LoaderOptions
+            {
+                Preconditions = new Preconditions
+                {
+                    ConditionRate = 0.01,
+                    MaxIterationCount = 100,
+                    StartForceMatrix = forceMatrix
+                },
+                NdmCollection = ndmCollection
+            };
+            var calculator = new Calculator();
+            calculator.Run(loaderData, new CancellationToken());
+            return calculator.Result;
+        }
     }
 }
diff --git a/Windows/MainWindow/MainViewModel.cs b/Windows/MainWindow/MainViewModel.cs
index 6e1cb5b..26fa692 100644
--- a/Windows/MainWindow/MainViewModel.cs
+++ b/Windows/MainWindow/MainViewModel.cs
@@ -13,6 +13,9 @@ using StructureHelper.Services;
 using StructureHelper.Windows.ColorPickerWindow;
 using StructureHelper.UnitSystem;
 using StructureHelper.Models.Materials;
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using StructureHelper.Services.ResultViewers;
 
 namespace StructureHelper.Windows.MainWindow
 {
@@ -232,12 +235,13 @@ namespace StructureHelper.Windows.MainWindow
 
             Calculate = new RelayCommand(o =>
             {
-                var matrix = model.Calculate(10e3, 0d, 0d);
-                MessageBox.Show(
-                    $"{nameof(matrix.EpsZ)} = {matrix.EpsZ};\n" +
-                        $"{nameof(matrix.Kx)} = {matrix.Kx};\n" +
-                        $"{nameof(matrix.Ky)} = {matrix.Ky}", 
-                    "StructureHelper");
+                //var matrix = model.Calculate(10e3, 0d, 0d);
+                //MessageBox.Show(
+                //    $"{nameof(matrix.EpsZ)} = {matrix.EpsZ};\n" +
+                //        $"{nameof(matrix.Kx)} = {matrix.Kx};\n" +
+                //        $"{nameof(matrix.Ky)} = {matrix.Ky}", 
+                //    "StructureHelper");
+                CalculateResult();
             });
 
             SetPopupCanBeClosedTrue = new RelayCommand(o =>
@@ -253,6 +257,14 @@ namespace StructureHelper.Windows.MainWindow
             });
         }
 
+        private void CalculateResult()
+        {
+            IForceMatrix forceMatrix = new ForceMatrix() { Mx = 10e3, My = 10e3, Nz = 0 };
+            IEnumerable<INdm> ndms = Model.GetNdms();
+            var loaderResult = Model.CalculateResult(ndms, forceMatrix);
+            ShowIsoFieldResult.ShowResult(loaderResult.StrainMatrix, ndms, ResultFuncFactory.GetResultFuncs());
+        }
+
         private IEnumerable<PrimitiveBase> GetTestCasePrimitives()
         {
             var width = 400;