Force calculator was repaired for buckling calculations

StructureHelper/Infrastructure/UI/Resources/ButtonStyles.xaml

@@ -51,6 +51,20 @@
     </Style>
 
     <Style x:Key="ToolButton" TargetType="Button">
+        <Style.Resources>
+            <Style TargetType="Image">
+                <Setter Property="Width" Value="32"/>
+                <Setter Property="Height" Value="32"/>
+                <Setter Property="Margin" Value="0"/>
+                <Setter Property="HorizontalAlignment" Value="Center"/>
+                <Setter Property="VerticalAlignment" Value="Center"/>
+                <Style.Triggers>
+                    <Trigger Property="IsEnabled" Value="False">
+                        <Setter Property="Opacity" Value="0.25"/>
+                    </Trigger>
+                </Style.Triggers>
+            </Style>
+        </Style.Resources>
         <Setter Property="Width" Value="32"/>
         <Setter Property="Height" Value="32"/>
         <Setter Property="Margin" Value="2,0,2,0"/>

StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs

@@ -61,21 +61,27 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 
         public void ShowCracks()
         {
-            var unitForce = CommonOperation.GetUnit(UnitTypes.Force, "kN");
+            List<string> labels = GetCrackLabels();
-            var unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, "kNm");
+            arrayParameter = new ArrayParameter<double>(ValidTupleList.Count(), labels);
-            var unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature, "1/m");
+            CalculateWithCrack(ValidTupleList,
-
+                NdmPrimitives,
-            List<string> labels = GetCrackLabels(unitForce, unitMoment, unitCurvature);
+                CommonOperation.GetUnit(UnitTypes.Force),
-            arrayParameter = new ArrayParameter<double>(ValidTupleList.Count(), labels.Count(), labels);
+                CommonOperation.GetUnit(UnitTypes.Moment),
-            CalculateWithCrack(ValidTupleList, NdmPrimitives, unitForce, unitMoment, unitCurvature);
+                CommonOperation.GetUnit(UnitTypes.Curvature));
         }
 
         public void ShowWindow()
         {
             SafetyProcessor.RunSafeProcess(() =>
             {
-                var series = new Series(arrayParameter) { Name = "Forces and curvatures" };
+                var series = new Series(arrayParameter)
-                var vm = new GraphViewModel(new List<Series>() { series });
+                {
+                    Name = "Forces and curvatures"
+                };
+                var vm = new GraphViewModel(new List<Series>()
+                {
+                    series
+                });
                 var wnd = new GraphView(vm);
                 wnd.ShowDialog();
             },
@@ -132,11 +138,12 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
             }
         }
 
-        private static List<string> GetCrackLabels(IUnit unitForce, IUnit unitMoment, IUnit unitCurvature)
+        private static List<string> GetCrackLabels()
         {
             const string crc = "Crc";
             const string crcFactor = "CrcSofteningFactor";
-            var labels = LabelsFactory.GetLabels();
+            var labels = LabelsFactory.GetCommonLabels();
+            IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
             var crclabels = new List<string>
             {
                 $"{crc}{GeometryNames.CurvFstName}, {unitCurvature.Name}",

StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/LabelsFactory.cs

@@ -11,11 +11,11 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 {
     public static class LabelsFactory
     {
-        private static IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force, "kN");
+        private static IUnit unitForce = CommonOperation.GetUnit(UnitTypes.Force);
-        private static IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, "kNm");
+        private static IUnit unitMoment = CommonOperation.GetUnit(UnitTypes.Moment);
-        private static IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature, "1/m");
+        private static IUnit unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
         private static GeometryNames GeometryNames => ProgramSetting.GeometryNames;
-        public static List<string> GetLabels()
+        public static List<string> GetCommonLabels()
         {
             var labels = new List<string>
             {

StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowDiagramLogic.cs

@@ -1,6 +1,7 @@
 using StructureHelper.Windows.Graphs;
 using StructureHelper.Windows.ViewModels.Errors;
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Infrastructures.Settings;
 using StructureHelperCommon.Models;
@@ -17,12 +18,12 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
 {
     internal class ShowDiagramLogic : ILongProcessLogic
     {
-        ArrayParameter<double> arrayParameter;
+        private ArrayParameter<double> arrayParameter;
-        private IEnumerable<IForcesTupleResult> TupleList;
+        private IEnumerable<IForcesTupleResult> tupleList;
-        private IEnumerable<INdmPrimitive> NdmPrimitives;
+        private IEnumerable<INdmPrimitive> ndmPrimitives;
-        private List<IForcesTupleResult> ValidTupleList;
+        private List<IForcesTupleResult> validTupleList;
 
-        public int StepCount => ValidTupleList.Count();
+        public int StepCount => validTupleList.Count();
 
         public Action<int> SetProgress { get; set; }
         public bool Result { get; set; }
@@ -48,37 +49,33 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             SafetyProcessor.RunSafeProcess(() =>
             {
                 var series = new Series(arrayParameter) { Name = "Forces and curvatures" };
-                var vm = new GraphViewModel(new List<Series>() { series});
+                var vm = new GraphViewModel(new List<Series>() { series });
                 var wnd = new GraphView(vm);
                 wnd.ShowDialog();
-            },
+            }, ErrorStrings.ErrorDuring("building chart"));
-            "Errors appeared during showing a graph, see detailed information");
         }
         private void Show()
         {
-            ValidTupleList = TupleList.Where(x => x.IsValid == true).ToList();
+            validTupleList = tupleList.Where(x => x.IsValid == true).ToList();
-            var unitForce = CommonOperation.GetUnit(UnitTypes.Force, "kN");
-            var unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, "kNm");
-            var unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature, "1/m");
 
-            var labels = LabelsFactory.GetLabels();
+            var labels = LabelsFactory.GetCommonLabels();
-            arrayParameter = new ArrayParameter<double>(ValidTupleList.Count(), labels.Count(), labels);
+            arrayParameter = new ArrayParameter<double>(validTupleList.Count(), labels);
-            CalculateWithoutCrack(ValidTupleList, unitForce, unitMoment, unitCurvature);
+            Calculate();
         }
 
         public ShowDiagramLogic(IEnumerable<IForcesTupleResult> tupleList, IEnumerable<INdmPrimitive> ndmPrimitives)
         {
-            TupleList = tupleList;
+            this.tupleList = tupleList;
-            NdmPrimitives = ndmPrimitives;
+            this.ndmPrimitives = ndmPrimitives;
-            ValidTupleList = TupleList.Where(x => x.IsValid == true).ToList();
+            validTupleList = tupleList.Where(x => x.IsValid == true).ToList();
         }
 
-        private void CalculateWithoutCrack(List<IForcesTupleResult> resultList, IUnit unitForce, IUnit unitMoment, IUnit unitCurvature)
+        private void Calculate()
         {
             var data = arrayParameter.Data;
-            for (int i = 0; i < resultList.Count(); i++)
+            for (int i = 0; i < validTupleList.Count(); i++)
             {
-                var valueList = ProcessResultWithouCrack(resultList, unitForce, unitMoment, unitCurvature, i);
+                var valueList = ProcessResult(i);
                 for (int j = 0; j < valueList.Count; j++)
                 {
                     data[i, j] = valueList[j];
@@ -88,16 +85,20 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
         }
 
 
-        private static List<double> ProcessResultWithouCrack(List<IForcesTupleResult> resultList, IUnit unitForce, IUnit unitMoment, IUnit unitCurvature, int i)
+        private List<double> ProcessResult(int i)
         {
+            var unitForce = CommonOperation.GetUnit(UnitTypes.Force);
+            var unitMoment = CommonOperation.GetUnit(UnitTypes.Moment);
+            var unitCurvature = CommonOperation.GetUnit(UnitTypes.Curvature);
+            
             return new List<double>
                 {
-                    resultList[i].DesignForceTuple.ForceTuple.Mx * unitMoment.Multiplyer,
+                    validTupleList[i].DesignForceTuple.ForceTuple.Mx * unitMoment.Multiplyer,
-                    resultList[i].DesignForceTuple.ForceTuple.My * unitMoment.Multiplyer,
+                    validTupleList[i].DesignForceTuple.ForceTuple.My * unitMoment.Multiplyer,
-                    resultList[i].DesignForceTuple.ForceTuple.Nz * unitForce.Multiplyer,
+                    validTupleList[i].DesignForceTuple.ForceTuple.Nz * unitForce.Multiplyer,
-                    resultList[i].LoaderResults.ForceStrainPair.StrainMatrix.Kx * unitCurvature.Multiplyer,
+                    validTupleList[i].LoaderResults.ForceStrainPair.StrainMatrix.Kx * unitCurvature.Multiplyer,
-                    resultList[i].LoaderResults.ForceStrainPair.StrainMatrix.Ky * unitCurvature.Multiplyer,
+                    validTupleList[i].LoaderResults.ForceStrainPair.StrainMatrix.Ky * unitCurvature.Multiplyer,
-                    resultList[i].LoaderResults.ForceStrainPair.StrainMatrix.EpsZ
+                    validTupleList[i].LoaderResults.ForceStrainPair.StrainMatrix.EpsZ
                 };
         }
     }

StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowValuePointDiagramLogic.cs

@@ -1,21 +1,102 @@
-using StructureHelper.Windows.Forces;
+using StructureHelper.Infrastructure.UI.DataContexts;
+using StructureHelper.Services.ResultViewers;
+using StructureHelper.Windows.Forces;
+using StructureHelper.Windows.Graphs;
+using StructureHelper.Windows.ViewModels.Errors;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.Parameters;
+using StructureHelperCommon.Models.Shapes;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
+using StructureHelperLogics.NdmCalculations.Primitives;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
 {
-    public class ShowValuePointDiagramLogic
+    public class ShowValuePointDiagramLogic : ILongProcessLogic
     {
+        private ArrayParameter<double> arrayParameter;
+        private IEnumerable<IForcesTupleResult> tupleList;
+        private IEnumerable<INdmPrimitive> ndmPrimitives;
+        private List<IForcesTupleResult> validTupleList;
+        private List<(PrimitiveBase PrimitiveBase, List<NamedValue<IPoint2D>>)> valuePoints;
+        private List<IResultFunc> resultFuncList;
+
         public ForceCalculator Calculator { get; set; }
         public PointPrimitiveLogic PrimitiveLogic { get; set; }
         public ValueDelegatesLogic ValueDelegatesLogic { get; set; }
-        public void ShowGraph()
+
+        public int StepCount => throw new NotImplementedException();
+
+        public Action<int> SetProgress { get; set; }
+        public bool Result { get; set; }
+        public IShiftTraceLogger? TraceLogger { get; set; }
+        public ShowValuePointDiagramLogic(IEnumerable<IForcesTupleResult> tupleList, IEnumerable<INdmPrimitive> ndmPrimitives)
+        {
+            this.tupleList = tupleList;
+            this.ndmPrimitives = ndmPrimitives;
+            validTupleList = this.tupleList.Where(x => x.IsValid == true).ToList();
+            valuePoints = new List<(PrimitiveBase PrimitiveBase, List<NamedValue<IPoint2D>>)>();
+            foreach (var item in PrimitiveLogic.Collection.CollectionItems) 
+            {
+                var pointsCount = item.Item.ValuePoints.SelectedCount;
+                if (pointsCount > 0)
+                {
+                    var points = item.Item.ValuePoints.SelectedItems.ToList();
+                    var primitive = item.Item.PrimitiveBase;
+                    valuePoints.Add((primitive, points));
+                }
+            }
+        }
+        public void ShowWindow()
+        {
+            SafetyProcessor.RunSafeProcess(() =>
+            {
+                var series = new Series(arrayParameter)
+                {
+                    Name = "Forces and curvatures"
+                };
+                var vm = new GraphViewModel(new List<Series>()
+                {
+                    series
+                });
+                var wnd = new GraphView(vm);
+                wnd.ShowDialog();
+            }, ErrorStrings.ErrorDuring("building chart"));
+        }
+
+        public void WorkerDoWork(object sender, DoWorkEventArgs e)
+        {
+            Show();
+            Result = true;
+        }
+
+        public void WorkerProgressChanged(object sender, ProgressChangedEventArgs e)
+        {
+            //Nothing to do
+        }
+
+        public void WorkerRunWorkCompleted(object sender, RunWorkerCompletedEventArgs e)
+        {
+            //Nothing to do
+        }
+
+        private void Show()
         {
 
         }
+
+        private List<string> GetColumnNames()
+        {
+            var columnNames = LabelsFactory.GetCommonLabels();
+            
+            return columnNames;
+        }
     }
 }

StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsView.xaml

@@ -10,20 +10,20 @@
     <DockPanel>
         <ToolBarTray DockPanel.Dock="Top">
             <ToolBar>
-                <Button Command="{Binding ShowCrackResultCommand}" ToolTip="Show force of cracking">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding ShowCrackResultCommand}" ToolTip="Show force of cracking">
-                    <Image Style="{StaticResource ButtonImage32}" Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_crack.png"/>
+                    <Image Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_crack.png"/>
                 </Button>
-                <Button Command="{Binding InterpolateCommand}" ToolTip="Show result step by step">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding InterpolateCommand}" ToolTip="Show result step by step">
-                    <Image Style="{StaticResource ButtonImage32}" Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_interpolation_1_1.png"/>
+                    <Image Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_interpolation_1_1.png"/>
                 </Button>
-                <Button Command="{Binding ShowGraphsCommand}" ToolTip="Show diagram moment-curvature">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding ShowGraphsCommand}" ToolTip="Show diagram moment-curvature">
-                    <Image Style="{StaticResource ButtonImage32}" Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_2.png"/>
+                    <Image Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_2.png"/>
                 </Button>
-                <Button Command="{Binding GraphValuePointsCommand}" ToolTip="Show diagram by value points">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding GraphValuePointsCommand}" ToolTip="Show diagram by value points">
-                    <Image Style="{StaticResource ButtonImage32}" Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_2.png"/>
+                    <Image Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_2.png"/>
                 </Button>
-                <Button Command="{Binding ShowInteractionDiagramCommand}" ToolTip="Show interaction diagram">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding ShowInteractionDiagramCommand}" ToolTip="Show interaction diagram">
-                    <Image Style="{StaticResource ButtonImage32}" Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_1.png"/>
+                    <Image Source="/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/32px_graph_1.png"/>
                 </Button>
                 
             </ToolBar>

StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsViewModel.cs

@@ -176,8 +176,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
                     };
                     showProgressLogic.Show();
                 }
-            }, o => SelectedResult != null && SelectedResult.IsValid
+            }, o => SelectedResult != null);
-            );
         }
         public ICommand ShowCrackGraphsCommand
         {
@@ -282,11 +281,16 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
 
         private void InterpolateValuePoints()
         {
+            if (SelectedResult is null)
+            {
+                throw new StructureHelperException(ErrorStrings.NullReference + ": Nothing is selected");
+            }
+            var tuple = SelectedResult.DesignForceTuple ?? throw new StructureHelperException(ErrorStrings.NullReference + ": Design force combination");
             var inputData = new ValuePointsInterpolationInputData()
             {
-                FinishDesignForce = SelectedResult.DesignForceTuple.Clone() as IDesignForceTuple,
+                FinishDesignForce = tuple.Clone() as IDesignForceTuple,
-                LimitState = SelectedResult.DesignForceTuple.LimitState,
+                LimitState = tuple.LimitState,
-                CalcTerm = SelectedResult.DesignForceTuple.CalcTerm,
+                CalcTerm = tuple.CalcTerm,
             };
             inputData.PrimitiveBases.AddRange(PrimitiveOperations.ConvertNdmPrimitivesToPrimitiveBase(ndmPrimitives));
             var viewModel = new ValuePointsInterpolateViewModel(inputData);
@@ -294,7 +298,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             wnd.ShowDialog();
             if (wnd.DialogResult != true) { return; }
             var interpolationLogic = new InterpolationProgressLogic(forceCalculator, viewModel.ForceInterpolationViewModel.Result);
-            ShowValuePointDiagramLogic pointGraphLogic = new()
+            ShowValuePointDiagramLogic pointGraphLogic = new(ForcesResults.ForcesResultList, ndmPrimitives)
             {
                 Calculator = interpolationLogic.InterpolateCalculator,
                 PrimitiveLogic = viewModel.PrimitiveLogic,
@@ -303,7 +307,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             progressLogic = interpolationLogic;
             showProgressLogic = new(interpolationLogic)
             {
-                ShowResult = pointGraphLogic.ShowGraph
+                ShowResult = pointGraphLogic.ShowWindow
             };
             showProgressLogic.Show();
         }

StructureHelper/Windows/UserControls/MultiplyDouble.xaml

@@ -6,7 +6,27 @@
              xmlns:local="clr-namespace:StructureHelper.Windows.UserControls"
              mc:Ignorable="d" 
              d:DesignHeight="25" d:DesignWidth="120">
-    <Grid>
+    <Grid x:Name="ButtonGrid" Opacity="0.1">
+        <Grid.Triggers>
+            <EventTrigger RoutedEvent="UIElement.MouseEnter" SourceName="ButtonGrid">
+                <BeginStoryboard>
+                    <Storyboard>
+                        <DoubleAnimation Storyboard.TargetName="ButtonGrid"
+                                         Storyboard.TargetProperty="Opacity"
+                                         To="1.0" Duration="0:0:0.5" />
+                    </Storyboard>
+                </BeginStoryboard>
+            </EventTrigger>
+            <EventTrigger RoutedEvent="UIElement.MouseLeave" SourceName="ButtonGrid">
+                <BeginStoryboard>
+                    <Storyboard>
+                        <DoubleAnimation Storyboard.TargetName="ButtonGrid"
+                                         Storyboard.TargetProperty="Opacity"
+                                         To="0.1" Duration="0:0:5.0" />
+                    </Storyboard>
+                </BeginStoryboard>
+            </EventTrigger>
+        </Grid.Triggers>
         <Grid.ColumnDefinitions>
             <ColumnDefinition/>
             <ColumnDefinition/>

StructureHelperCommon/Infrastructures/Exceptions/ErrorString.cs

@@ -25,5 +25,7 @@
         public static string ExpectedWas(System.Type expected, object obj) => ExpectedWas(expected, obj.GetType());
         public static string NullReference => "#0018: Null reference";
         public static string ObjectNotFound => "#0018: Object not found";
+        public static string ErrorDuring(string operation) => string.Format("Errors appeared during {0}, see detailed information", operation);
+        public static string CalculationError => "#0019: Error of calculation";
     }
 }

StructureHelperCommon/Infrastructures/Interfaces/ILongProcessLogic.cs

@@ -10,14 +10,12 @@ using System.Windows.Forms;
 
 namespace StructureHelperCommon.Infrastructures.Interfaces
 {
-    public interface ILongProcessLogic
+    public interface ILongProcessLogic : ILogic
     {
         int StepCount { get; }
         Action<int> SetProgress { get; set; }
         bool Result { get; set; }
 
-        IShiftTraceLogger? TraceLogger { get; set; }
-
         void WorkerDoWork(object sender, DoWorkEventArgs e);
         void WorkerProgressChanged(object sender, ProgressChangedEventArgs e);
         void WorkerRunWorkCompleted(object sender, RunWorkerCompletedEventArgs e);

StructureHelperCommon/Models/Loggers/LoggerStrings.cs

@@ -11,6 +11,9 @@ namespace StructureHelperCommon.Models.Loggers
         public static string DimensionLess => "(dimensionless)";
         public static string MethodBasedOn => "Method of calculation based on ";
         public static string CalculationHasDone => "Calculation has done succesfully";
+        public static string Summary => "Summary";
+        public static string Maximum => "Maximum";
+        public static string Minimum => "Minimum";
         public static string CalculatorType(object obj) => string.Format("Calculator type: {0}", obj.GetType());
     }
 }

StructureHelperCommon/Models/Parameters/ArrayParameter.cs

@@ -42,5 +42,6 @@ namespace StructureHelperCommon.Models.Parameters
 				ColumnLabels = columnLabels;
 			}
         }
+        public ArrayParameter(int rowCount, List<string> columnLabels) : this(rowCount, columnLabels.Count, columnLabels) { }
     }
 }

StructureHelperCommon/Models/Sections/Logics/AccidentalEccentricityLogic.cs

@@ -5,6 +5,9 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
+//Copyright (c) 2023 Redikultsev Evgeny, Ekaterinburg, Russia
+//All rights reserved.
+
 namespace StructureHelperCommon.Models.Sections
 {
     public class AccidentalEccentricityLogic : IAccidentalEccentricityLogic
@@ -64,10 +67,10 @@ namespace StructureHelperCommon.Models.Sections
                 minEccentricity, yEccentricity,
                 yFullEccentricity);
             TraceLogger?.AddMessage(mesEy);
-            var xSign = InitialForceTuple.Mx == 0 ? 1 : Math.Sign(InitialForceTuple.Mx);
+            var xSign = InitialForceTuple.Mx == 0d ? -1d : Math.Sign(InitialForceTuple.Mx);
-            var ySign = InitialForceTuple.My == 0 ? 1 : Math.Sign(InitialForceTuple.My);
+            var ySign = InitialForceTuple.My == 0d ? -1d : Math.Sign(InitialForceTuple.My);
-            var mx = InitialForceTuple.Nz * yFullEccentricity * xSign;
+            var mx = (-1d) * InitialForceTuple.Nz * yFullEccentricity * xSign;
-            var my = InitialForceTuple.Nz * xFullEccentricity * ySign;
+            var my = (-1d) * InitialForceTuple.Nz * xFullEccentricity * ySign;
             TraceLogger?.AddMessage(string.Format("Bending moment arbitrary X-axis Mx = {0} * {1} = {2}", InitialForceTuple.Nz, yFullEccentricity, mx), TraceLogStatuses.Debug);
             TraceLogger?.AddMessage(string.Format("Bending moment arbitrary Y-axis My = {0} * {1} = {2}", InitialForceTuple.Nz, xFullEccentricity, my), TraceLogStatuses.Debug);
 

StructureHelperCommon/Services/Units/CommonOperation.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using System.Text.RegularExpressions;
+using System.Windows.Documents;
 
 namespace StructureHelperCommon.Services.Units
 {
@@ -47,11 +48,30 @@ namespace StructureHelperCommon.Services.Units
             throw new StructureHelperException(ErrorStrings.DataIsInCorrect);
         }
 
-        public static IUnit GetUnit(UnitTypes unitType, string unitName)
+        public static IUnit GetUnit(UnitTypes unitType, string unitName = null)
         {
+            if (unitName is null)
+            {
+                var boolResult = DefaultUnitNames.TryGetValue(unitType, out unitName);
+                if (boolResult == false)
+                {
+                    throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": unit type{unitType} is unknown");
+                }
+            }
             return units.Where(u => u.UnitType == unitType & u.Name == unitName).Single();
         }
 
+        public static Dictionary<UnitTypes, string> DefaultUnitNames => new()
+        {
+            { UnitTypes.Length, "m"},
+            { UnitTypes.Area, "m2"},
+            { UnitTypes.Force, "kN" },
+            { UnitTypes.Moment, "kNm"},
+            { UnitTypes.Stress, "MPa"},
+            { UnitTypes.Curvature, "1/m"},
+        };
+
+
         public static string Convert(IUnit unit, string unitName, object value)
         {
             double val;

StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs

@@ -1,5 +1,6 @@
 using LoaderCalculator.Data.Ndms;
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
@@ -17,6 +18,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
     {
         static readonly ForceCalculatorUpdateStrategy updateStrategy = new();
         private readonly IForceTupleCalculator forceTupleCalculator;
+        private ForcesResults result;
+
         public string Name { get; set; }
         public List<LimitStates> LimitStatesList { get; private set; }
         public List<CalcTerms> CalcTermsList { get; private set; }
@@ -50,7 +53,10 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 
         private void CalculateResult()
         {
-            var ndmResult = new ForcesResults() { IsValid = true };
+            result = new ForcesResults()
+            {
+                IsValid = true
+            };
             foreach (var combination in ForceCombinationLists)
             {
                 foreach (var tuple in combination.DesignForces)
@@ -59,15 +65,34 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                     var calcTerm = tuple.CalcTerm;
                     if (LimitStatesList.Contains(limitState) & CalcTermsList.Contains(calcTerm))
                     {
-                        ProcessNdmResult(ndmResult, combination, tuple, limitState, calcTerm);
+
+                        IForcesTupleResult tupleResult;
+                        try
+                        {
+                            tupleResult = ProcessNdmResult(combination, tuple);
+                        }
+                        catch(Exception ex)
+                        {
+                            tupleResult = new ForcesTupleResult()
+                            {
+                                IsValid = false,
+                                Description = string.Empty + ex,
+                                DesignForceTuple = tuple
+                            };
+                        }
+                        result.ForcesResultList.Add(tupleResult);
+                        ActionToOutputResults?.Invoke(result);
                     }
                 }
             }
-            Result = ndmResult;
+            Result = result;
         }
 
-        private void ProcessNdmResult(ForcesResults ndmResult, IForceCombinationList combination, IDesignForceTuple tuple, LimitStates limitState, CalcTerms calcTerm)
+        private IForcesTupleResult ProcessNdmResult(IForceCombinationList combination, IDesignForceTuple tuple)
         {
+            IForcesTupleResult tupleResult;
+            LimitStates limitState = tuple.LimitState;
+            CalcTerms calcTerm = tuple.CalcTerm;
             var ndms = NdmPrimitivesService.GetNdms(Primitives, limitState, calcTerm);
             IPoint2D point2D;
             if (combination.SetInGravityCenter == true)
@@ -89,9 +114,22 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                 {
                     TraceLogger?.AddMessage("Get eccentricity for full load");
                     newTuple = ProcessAccEccentricity(ndms, newTuple);
-                    newTuple = GetForceTupleByBuckling(ndmResult, combination, limitState, calcTerm, ndms, newTuple);
+                    var buckResult = GetForceTupleByBuckling(combination, limitState, calcTerm, ndms, newTuple);
+                    if (buckResult.isValid == true)
+                    {
+                        newTuple = buckResult.tuple;
                     }
-                GetForceResult(ndmResult, limitState, calcTerm, ndms, newTuple);
+                    else
+                    {
+                        return new ForcesTupleResult()
+                        {
+                            IsValid = false,
+                            DesignForceTuple = tuple,
+                            Description = buckResult.description,
+                        };
+                    }
+                }
+                tupleResult = GetForceResult(limitState, calcTerm, ndms, newTuple);
             }
             else
             {
@@ -100,12 +138,14 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                     string message = string.Format("Second order effect is not considered, despite force Nz={0}", newTuple.Nz);
                     TraceLogger?.AddMessage(message, TraceLogStatuses.Warning);
                 }
-                GetForceResult(ndmResult, limitState, calcTerm, ndms, newTuple);
+                tupleResult = GetForceResult(limitState, calcTerm, ndms, newTuple);
             }
+            return tupleResult;
         }
 
-        private IForceTuple GetForceTupleByBuckling(ForcesResults ndmResult, IForceCombinationList combination, LimitStates limitState, CalcTerms calcTerm, List<INdm> ndms, IForceTuple newTuple)
+        private (bool isValid, IForceTuple tuple, string description)  GetForceTupleByBuckling(IForceCombinationList combination, LimitStates limitState, CalcTerms calcTerm, List<INdm> ndms, IForceTuple newTuple)
         {
+            var tuple = newTuple.Clone() as IForceTuple;
             var inputData = new BucklingInputData()
             {
                 Combination = combination,
@@ -119,41 +159,31 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             if (bucklingResult.IsValid != true)
             {
                 TraceLogger?.AddMessage(bucklingResult.Description, TraceLogStatuses.Error);
-                var result = new ForcesTupleResult
+                return (false, tuple, $"Buckling result:\n{bucklingResult.Description}");
-                {
-                    IsValid = false,
-                    Description = $"Buckling result:\n{bucklingResult.Description}\n",
-                    DesignForceTuple = new DesignForceTuple()
-                    {
-                        ForceTuple = newTuple,
-                        LimitState = limitState,
-                        CalcTerm = calcTerm
-                    }
-                };
-                ndmResult.ForcesResultList.Add(result);
             }
             else
             {
-                newTuple = CalculateBuckling(newTuple, bucklingResult);
+                tuple = CalculateBuckling(tuple, bucklingResult);
-                TraceLogger?.AddMessage($"Force combination with considering of second order effects");
+                TraceLogger?.AddMessage(string.Intern("Force combination with considering of second order effects"));
-                TraceLogger?.AddEntry(new TraceTablesFactory().GetByForceTuple(newTuple));
+                TraceLogger?.AddEntry(new TraceTablesFactory().GetByForceTuple(tuple));
             }
 
-            return newTuple;
+            return (true, tuple, string.Empty);
         }
 
-        private void GetForceResult(ForcesResults ndmResult, LimitStates limitState, CalcTerms calcTerm, List<INdm> ndms, IForceTuple newTuple)
+        private IForcesTupleResult GetForceResult(LimitStates limitState, CalcTerms calcTerm, List<INdm> ndms, IForceTuple newTuple)
         {
-            var result = GetPrimitiveStrainMatrix(ndms, newTuple, Accuracy);
+            var tupleResult = GetPrimitiveStrainMatrix(ndms, newTuple, Accuracy);
-            result.DesignForceTuple.LimitState = limitState;
+            tupleResult.DesignForceTuple.LimitState = limitState;
-            result.DesignForceTuple.CalcTerm = calcTerm;
+            tupleResult.DesignForceTuple.CalcTerm = calcTerm;
-            result.DesignForceTuple.ForceTuple = newTuple;
+            tupleResult.DesignForceTuple.ForceTuple = newTuple;
-            ndmResult.ForcesResultList.Add(result);
+            return tupleResult;
-            ActionToOutputResults?.Invoke(ndmResult);
+            
         }
 
-        private IForceTuple ProcessAccEccentricity(List<INdm> ndms, IForceTuple newTuple)
+        private IForceTuple ProcessAccEccentricity(List<INdm> ndms, IForceTuple tuple)
         {
+            var newTuple = tuple.Clone() as IForceTuple;
             var accLogic = new AccidentalEccentricityLogic()
             {
                 Length = CompressedMember.GeometryLength,
@@ -161,7 +191,10 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                 SizeY = ndms.Max(x => x.CenterY) - ndms.Min(x => x.CenterY),
                 InitialForceTuple = newTuple,
             };
-            if (TraceLogger is not null) { accLogic.TraceLogger = TraceLogger.GetSimilarTraceLogger(50); }
+            if (TraceLogger is not null)
+            {
+                accLogic.TraceLogger = TraceLogger.GetSimilarTraceLogger(50);
+            }
             newTuple = accLogic.GetForceTuple();
             return newTuple;
         }
@@ -196,7 +229,10 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             IForceTuple longTuple;
             try
             {
-                longTuple = designForces.Where(x => x.LimitState == limitState & x.CalcTerm == CalcTerms.LongTerm).First().ForceTuple;
+                longTuple = designForces
+                    .Where(x => x.LimitState == limitState & x.CalcTerm == CalcTerms.LongTerm)
+                    .Single()
+                    .ForceTuple;
             }
             catch (Exception)
             {

StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceTupleCalculator.cs

@@ -9,6 +9,7 @@ using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
 using StructureHelperCommon.Models.Loggers;
 using StructureHelperCommon.Models.Shapes;
+using StructureHelperLogics.Services;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
@@ -33,18 +34,16 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 
         private IForcesTupleResult CalculateResult()
         {
-            TraceLogger?.AddMessage($"Calculator type: {GetType()}", TraceLogStatuses.Service);
+            TraceLogger?.AddMessage(string.Intern($"Calculator type: {GetType()}"), TraceLogStatuses.Service);
-            TraceLogger?.AddMessage($"Calculator logic based on calculating strain in plain section by elementary parts of finished size");
+            TraceLogger?.AddMessage(string.Intern("Calculator logic based on calculating strain in plain section by elementary parts of finished size"));
             var ndmCollection = InputData.NdmCollection;
-            TraceLogger?.AddMessage($"Collection of elementary parts contains {ndmCollection.Count()} parts");
+            if (TraceLogger is not null)
-            TraceLogger?.AddMessage($"Summary area of elementary part collection = {ndmCollection.Sum(x => x.Area * x.StressScale)}", TraceLogStatuses.Service);
+            {
-            TraceLogger?.AddMessage($"Minimum x = {ndmCollection.Min(x => x.CenterX)}", TraceLogStatuses.Debug);
+                TraceService.TraceNdmCollection(TraceLogger, ndmCollection);
-            TraceLogger?.AddMessage($"Maximum x = {ndmCollection.Max(x => x.CenterX)}", TraceLogStatuses.Debug);
+            }
-            TraceLogger?.AddMessage($"Minimum y = {ndmCollection.Min(x => x.CenterY)}", TraceLogStatuses.Debug);
-            TraceLogger?.AddMessage($"Maximum y = {ndmCollection.Max(x => x.CenterY)}", TraceLogStatuses.Debug);
             var tuple = InputData.Tuple;
             var accuracy = InputData.Accuracy;
-            TraceLogger?.AddMessage($"Input force combination");
+            TraceLogger?.AddMessage(string.Intern("Input force combination"));
             TraceLogger?.AddEntry(new TraceTablesFactory().GetByForceTuple(tuple));
             var mx = tuple.Mx;
             var my = tuple.My;
@@ -65,9 +64,9 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                     NdmCollection = ndmCollection
                 };
                 var calculator = new Calculator();
-                TraceLogger?.AddMessage($"Calculation is started", TraceLogStatuses.Debug);
+                TraceLogger?.AddMessage(string.Intern("Calculation is started"), TraceLogStatuses.Debug);
                 calculator.Run(loaderData, new CancellationToken());
-                TraceLogger?.AddMessage($"Calculation result is obtained", TraceLogStatuses.Debug);
+                TraceLogger?.AddMessage(string.Intern("Calculation result is obtained"), TraceLogStatuses.Debug);
                 var calcResult = calculator.Result;
                 if (calcResult.AccuracyRate <= accuracy.IterationAccuracy)
                 {
@@ -77,18 +76,18 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                         Description = LoggerStrings.CalculationHasDone,
                         LoaderResults = calcResult
                     };
-                    forceTupleTraceResultLogic = new ForceTupleTraceResultLogic(ndmCollection) { TraceLogger = TraceLogger};
+                    forceTupleTraceResultLogic = new ForceTupleTraceResultLogic(ndmCollection) { TraceLogger = TraceLogger };
                     forceTupleTraceResultLogic.TraceResult(result);
                     return result;
                 }
                 else
                 {
-                    TraceLogger?.AddMessage($"Required accuracy rate has not achieved", TraceLogStatuses.Error);
+                    TraceLogger?.AddMessage(string.Intern("Required accuracy rate has not achieved"), TraceLogStatuses.Error);
                     TraceLogger?.AddMessage($"Current accuracy {calcResult.AccuracyRate}, {calcResult.IterationCounter} iteration has done", TraceLogStatuses.Warning);
                     return new ForcesTupleResult()
                     {
                         IsValid = false,
-                        Description = "Required accuracy rate has not achieved",
+                        Description = string.Intern("Required accuracy rate has not achieved"),
                         LoaderResults = calcResult
                     };
                 }
@@ -103,8 +102,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                 };
                 if (ex.Message == "Calculation result is not valid: stiffness matrix is equal to zero")
                 {
-                    TraceLogger?.AddMessage($"Stiffness matrix is equal to zero\nProbably section was collapsed", TraceLogStatuses.Error);
+                    TraceLogger?.AddMessage(string.Intern("Stiffness matrix is equal to zero\nProbably section was collapsed"), TraceLogStatuses.Error);
-                    result.Description = "Stiffness matrix is equal to zero\nProbably section was collapsed";
+                    result.Description = string.Intern("Stiffness matrix is equal to zero\nProbably section was collapsed");
                 }
                 else
                 {

StructureHelperLogics/NdmCalculations/Buckling/ConcreteBucklingCalculator.cs

@@ -1,4 +1,5 @@
-using LoaderCalculator.Data.Ndms;
+using LoaderCalculator.Data.Materials;
+using LoaderCalculator.Data.Ndms;
 using LoaderCalculator.Logics;
 using LoaderCalculator.Logics.Geometry;
 using StructureHelperCommon.Models;
@@ -9,6 +10,7 @@ using StructureHelperCommon.Models.Shapes;
 using StructureHelperLogics.Models.Materials;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
 using StructureHelperLogics.NdmCalculations.Primitives;
+using StructureHelperLogics.Services;
 using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperLogics.NdmCalculations.Buckling
@@ -28,7 +30,7 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
         public IResult Result { get; private set; }
 
         public IAccuracy Accuracy { get; set; }
-        public Action<IResult> ActionToOutputResults { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        public Action<IResult> ActionToOutputResults { get; set; }
         public IShiftTraceLogger? TraceLogger { get; set; }
 
         private (double EtaAlongX, double EtaAlongY) GetBucklingCoefficients()
@@ -50,11 +52,9 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
             Accuracy = accuracy;
 
             var allPrimitives = options.Primitives;
-            var concretePrimitives = GetConcretePrimitives();
-            var otherPrimitives = allPrimitives.Except(concretePrimitives);
             ndmCollection = NdmPrimitivesService.GetNdms(allPrimitives, options.LimitState, options.CalcTerm);
-            concreteNdms = NdmPrimitivesService.GetNdms(concretePrimitives, options.LimitState, options.CalcTerm);
+            concreteNdms = ndmCollection.Where(x => x.Material is ICrackMaterial).ToList();
-            otherNdms = NdmPrimitivesService.GetNdms(otherPrimitives, options.LimitState, options.CalcTerm);
+            otherNdms = ndmCollection.Except(concreteNdms).ToList();
         }
 
         private (IConcreteDeltaELogic DeltaLogicX, IConcreteDeltaELogic DeltaLogicY) GetDeltaLogics()
@@ -78,35 +78,38 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
             return (DeltaElogicAboutX, DeltaElogicAboutY);
         }
 
-        private IEnumerable<INdmPrimitive> GetConcretePrimitives()
-        {
-            var primitives = options.Primitives.Where(x => x.HeadMaterial.HelperMaterial is IConcreteLibMaterial);
-            return primitives;
-        }
-
         private (double DX, double DY) GetStiffness()
         {
+            const string sumStif = "Summary stiffness";
             var gravityCenter = GeometryOperations.GetGravityCenter(ndmCollection);
             string message = string.Format("Gravity center, x = {0}, y = {1}", gravityCenter.Cx, gravityCenter.Cy);
             TraceLogger?.AddMessage(message);
+            if (TraceLogger is not null)
+            {
+                TraceLogger.AddMessage(string.Intern("Concrete elementary parts"));
+                TraceService.TraceNdmCollection(TraceLogger, concreteNdms);
+                TraceLogger.AddMessage(string.Intern("Nonconcrete elementary parts"));
+                TraceService.TraceNdmCollection(TraceLogger, otherNdms);
+            }
+            
             var (EIx, EIy) = GeometryOperations.GetReducedMomentsOfInertia(concreteNdms, gravityCenter);
-            TraceLogger.AddMessage(string.Format("Summary stiffness of concrete parts EIx,c = {0}", EIx));
+            TraceLogger?.AddMessage(string.Format("{0} of concrete parts EIx,c = {1}", sumStif, EIx));
-            TraceLogger.AddMessage(string.Format("Summary stiffness of concrete parts EIy,c = {0}", EIy));
+            TraceLogger?.AddMessage(string.Format("{0} of concrete parts EIy,c = {1}", sumStif, EIy));
             var otherInertia = GeometryOperations.GetReducedMomentsOfInertia(otherNdms, gravityCenter);
-            TraceLogger.AddMessage(string.Format("Summary stiffness of nonconcrete parts EIx,s = {0}", otherInertia.EIy));
+            TraceLogger?.AddMessage(string.Format("{0} of nonconcrete parts EIx,s = {1}", sumStif, otherInertia.EIx));
-            TraceLogger.AddMessage(string.Format("Summary stiffness of nonconcrete parts EIy,s = {0}", otherInertia.EIy));
+            TraceLogger?.AddMessage(string.Format("{0} of nonconcrete parts EIy,s = {1}", sumStif, otherInertia.EIy));
 
             var (Kc, Ks) = stiffnessLogicX.GetStiffnessCoeffitients();
             var dX = Kc * EIx  + Ks * otherInertia.EIx;
-            string mesDx = string.Format("Summary stiffness Dx = Kc * EIx,c + Ks * EIx,s = {0} * {1} + {2} * {3} = {4}",
+            string mesDx = string.Format("{0} Dx = Kc * EIx,c + Ks * EIx,s = {1} * {2} + {3} * {4} = {5}",
-                Kc, EIx, Ks, otherInertia.EIx, dX);
+                sumStif, Kc, EIx, Ks, otherInertia.EIx, dX);
-            TraceLogger.AddMessage(mesDx);
+            TraceLogger?.AddMessage(mesDx);
 
             var stiffnessY = stiffnessLogicY.GetStiffnessCoeffitients();
             var dY = stiffnessY.Kc * EIy + stiffnessY.Ks * otherInertia.EIy;
-            string mesDy = string.Format("Summary stiffness Dy = Kc * EIy,c + Ks * EIy,s = {0} * {1} + {2} * {3} = {4}",
+            string mesDy = string.Format("{0} Dy = Kc * EIy,c + Ks * EIy,s = {1} * {2} + {3} * {4} = {5}",
-                stiffnessY.Kc, EIy, stiffnessY.Ks, otherInertia.EIy, dY);
+                sumStif, stiffnessY.Kc, EIy, stiffnessY.Ks, otherInertia.EIy, dY);
-            TraceLogger.AddMessage(mesDy);
+            TraceLogger?.AddMessage(mesDy);
             return (dX, dY);
         }
 
@@ -132,8 +135,8 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
                     point = new Point2D() { X = item.CenterX, Y = item.CenterY };
                 }
             }
-            TraceLogger.AddMessage(string.Format("Most tensioned (minimum compressed) point: x = {0}, y = {1}", point.X, point.Y));
+            TraceLogger?.AddMessage(string.Format("Most tensioned (minimum compressed) point: x = {0}, y = {1}", point.X, point.Y));
-            TraceLogger.AddMessage(string.Format("Strain: epsilon = {0}", maxStrain), TraceLogStatuses.Debug);
+            TraceLogger?.AddMessage(string.Format("Strain: epsilon = {0}", maxStrain), TraceLogStatuses.Debug);
             return point;
         }
 

StructureHelperLogics/Services/TraceService.cs

@@ -0,0 +1,44 @@
+using LoaderCalculator.Data.Ndms;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.Loggers;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Services
+{
+    internal static class TraceService
+    {
+        public static void TraceNdmCollection(ITraceLogger traceLogger, IEnumerable<INdm> ndmCollection)
+        {
+            if (traceLogger is null)
+            {
+                throw new StructureHelperException(ErrorStrings.NullReference + ": trace logger");
+            }
+            if (ndmCollection is null)
+            {
+                traceLogger.AddMessage(string.Intern("Collection of elementary parts is null"), TraceLogStatuses.Error);
+                throw new StructureHelperException(ErrorStrings.NullReference + ": collection of elementary parts");
+            }
+            if (!ndmCollection.Any())
+            {
+                traceLogger.AddMessage("Collection of elementary parts is empty", TraceLogStatuses.Warning);
+            }
+            traceLogger.AddMessage(string.Format("Collection of elementary parts contains {0} parts", ndmCollection.Count()));
+            var mes = "area of elementary part collection ";
+            traceLogger.AddMessage(string.Format("{0} {1} A = {2}, {0} reduced {1} Ared = {3}",
+                LoggerStrings.Summary,
+                mes,
+                ndmCollection.Sum(x => x.Area),
+                ndmCollection.Sum(x => x.Area * x.StressScale)),
+                TraceLogStatuses.Service);
+            traceLogger.AddMessage($"Minimum x = {ndmCollection.Min(x => x.CenterX)}", TraceLogStatuses.Debug);
+            traceLogger.AddMessage($"Maximum x = {ndmCollection.Max(x => x.CenterX)}", TraceLogStatuses.Debug);
+            traceLogger.AddMessage($"Minimum y = {ndmCollection.Min(x => x.CenterY)}", TraceLogStatuses.Debug);
+            traceLogger.AddMessage($"Maximum y = {ndmCollection.Max(x => x.CenterY)}", TraceLogStatuses.Debug);
+        }
+    }
+}