feat: 스택 영역 그래프 생성

SmartAquaViewer/Model/Enums.cs

@@ -18,13 +18,16 @@ namespace SmartAquaViewer.Model
         LINE,
         BOX,
         SCATTER,
-        STEP
+        STEP,
+        STACKAREA,
+        PIE
     }
 
     public enum StepFieldKind
     {
         Status,  // 전원/상태
-        Sensor   // 센서 값
+        Sensor,  // 센서 값
+        Energy,  // 에너지 소비량
     }
 
     public enum PowerStatus

SmartAquaViewer/View/EnegyView.xaml

@@ -5,6 +5,7 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:SmartAquaViewer.View"
              xmlns:control="clr-namespace:SmartAquaViewer.Controls"
+             xmlns:helper="clr-namespace:SmartAquaViewer.Helper"
              mc:Ignorable="d" 
              d:DesignHeight="940" d:DesignWidth="1650">
     <Grid Background="#243851">
@@ -122,7 +123,120 @@
 
         <Border Grid.Row="1" Grid.Column="1" Margin="0 0 20 20" CornerRadius="10"
                 Background="#384659" BorderBrush="#404F63" BorderThickness="1">
-            
+            <Grid>
+                <Grid.RowDefinitions>
+                    <RowDefinition/>
+                    <RowDefinition Height="50"/>
+                </Grid.RowDefinitions>
+                <StackPanel>
+                    <Grid Margin="15 15 15 15">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="80"/>
+                            <ColumnDefinition/>
+                        </Grid.ColumnDefinitions>
+                        <TextBlock Text="그래프" VerticalAlignment="Center"
+                                   FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"/>
+
+                        <ComboBox Margin="15 0 0 0" Height="40" Grid.Column="1"
+                                  Style="{StaticResource ComboBoxStyle}"
+                                  ItemsSource="{Binding GraphTypes}"
+                                  SelectedIndex="{Binding SelectedGraphIndex, Mode=TwoWay}"
+                                  helper:ComboBoxHelper.SelectFirstOnItemsChange="True"
+                                  IsEditable="False" IsTextSearchEnabled="False"/>
+                    </Grid>
+                    <Grid Margin="15 0">
+                        <Grid.Resources>
+                            <Style TargetType="FrameworkElement">
+                                <Setter Property="Visibility" Value="Collapsed"/>
+                            </Style>
+                            <Style x:Key="VisibleWhenLine" TargetType="FrameworkElement" BasedOn="{StaticResource {x:Type FrameworkElement}}">
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="LINE">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                            <Style x:Key="VisibleWhenStackArea" TargetType="FrameworkElement" BasedOn="{StaticResource {x:Type FrameworkElement}}">
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="STACKAREA">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                            <Style x:Key="VisibleWhenLineNStackArea" TargetType="FrameworkElement" BasedOn="{StaticResource {x:Type FrameworkElement}}">
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="LINE">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="STACKAREA">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                            <Style x:Key="VisibleWhenPie" TargetType="FrameworkElement" BasedOn="{StaticResource {x:Type FrameworkElement}}">
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="PIE">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                        </Grid.Resources>
+
+                        <StackPanel Style="{StaticResource VisibleWhenLineNStackArea}">
+                            <Grid Margin="0 0 0 20" >
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="80"/>
+                                    <ColumnDefinition/>
+                                </Grid.ColumnDefinitions>
+                                <TextBlock Text="X축" VerticalAlignment="Center"
+                                           FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"/>
+                                <TextBlock Text="{Binding SelectedXField.Display}" VerticalAlignment="Center"
+                                           Margin="15 0 0 0" Grid.Column="1"
+                                           FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"/>
+                            </Grid>
+
+                            <Grid Margin="0 0 0 15" Style="{StaticResource VisibleWhenLineNStackArea}">
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="80"/>
+                                    <ColumnDefinition/>
+                                </Grid.ColumnDefinitions>
+                                <TextBlock Text="Y축" VerticalAlignment="Top"
+                                           FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"/>
+
+                                <Border Grid.Column="1" CornerRadius="10" 
+                                        Background="White" Margin="15 0 0 15">
+                                    <ListBox ItemsSource="{Binding YFieldCandidates}"
+                                             DisplayMemberPath="Display"
+                                             SelectionMode="Extended"
+                                             helper:MultiSelectBehavior.SelectedItems="{Binding SelectedYFields, Mode=OneWay}"
+                                             helper:MultiSelectBehavior.KeyPath="Key"
+                                             helper:MultiSelectBehavior.ValuePath="Value"
+                                             Height="Auto" Background="White"
+                                             FontSize="16" FontWeight="Bold"
+                                             Style="{StaticResource MaterialDesignFilterChipListBox}"/>
+                                </Border>
+                            </Grid>
+
+                            <StackPanel Orientation="Horizontal" Margin="0 0 0 15" Grid.Row="4">
+                                <CheckBox Content="마커 표시" IsChecked="{Binding ShowMarkers}" Margin="0 0 15 0"
+                                          FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"
+                                          VerticalContentAlignment="Center"
+                                          Style="{StaticResource MaterialDesignUserForegroundCheckBox}"/>
+                                <CheckBox Content="범례 표시" IsChecked="{Binding ShowLegends}" Margin="0 0 15 0"
+                                          FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"
+                                          VerticalContentAlignment="Center"
+                                          Style="{StaticResource MaterialDesignUserForegroundCheckBox}"/>
+                            </StackPanel>
+                        </StackPanel>
+
+                    </Grid>
+                </StackPanel>
+
+                <StackPanel Orientation="Horizontal" Margin="15 0" Grid.Row="1" HorizontalAlignment="Right">
+                    <Button Content="그래프 생성" Style="{StaticResource MaterialDesignFlatLightBgButton}"
+                            FontWeight="Bold" Command="{Binding DrawGraphCommand}"/>
+                </StackPanel>
+            </Grid>
         </Border>
 
         <Border Grid.Row="2" Grid.Column="1" Margin="0 0 20 20" CornerRadius="10"

SmartAquaViewer/View/MonitoringView.xaml

@@ -384,7 +384,7 @@
                                                 </Border>
                                             </StackPanel>
                                             <!-- 옵션 -->
-                                            <StackPanel Orientation="Horizontal" Margin="0 15 0 0" Grid.Row="4">
+                                            <StackPanel Orientation="Horizontal" Margin="0 15 0 0">
                                                 <CheckBox Content="마커 표시" IsChecked="{Binding ShowMarkers}" Margin="0 0 15 0"
                                                           FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"
                                                           VerticalContentAlignment="Center"

SmartAquaViewer/ViewModel/EnergyViewModel.cs

@@ -1,11 +1,14 @@
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.ComponentModel;
 using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Input;
 using OxyPlot.Axes;
+using SmartAquaViewer.Controls;
 using SmartAquaViewer.DataAnalysis;
 using SmartAquaViewer.Model;
 
@@ -13,6 +16,9 @@ namespace SmartAquaViewer.ViewModel
 {
     public class EnergyViewModel : INotifyPropertyChanged
     {
+        public GraphControlViewModel GraphControlVM { get; } = new GraphControlViewModel();
+        public ObservableCollection<GraphType> GraphTypes { get; }
+
         public List<WaterQualityVO> WaterQualityList { get; set; }
 
         private double _totalEnergy;
@@ -141,37 +147,211 @@ namespace SmartAquaViewer.ViewModel
             }
         }
 
+        private int _selectedGraphIndex = -1;
+        public int SelectedGraphIndex
+        {
+            get => _selectedGraphIndex;
+            set
+            {
+                if (_selectedGraphIndex != value)
+                {
+                    _selectedGraphIndex = value;
+                    OnPropertyChanged();
+                    // 인덱스가 바뀌면 enum도 맞춰준다
+                    if (value >= 0 && value < GraphTypes.Count)
+                        SelectedGraphType = GraphTypes[value];
+                }
+            }
+        }
+
+        private GraphType _selectedGraphType;
+        public GraphType SelectedGraphType
+        {
+            get => _selectedGraphType;
+            set
+            {
+                if (_selectedGraphType != value)
+                {
+                    _selectedGraphType = value;
+                    OnPropertyChanged();
+                    OnPropertyChanged(nameof(ShowXSelector));
+                    RebuildFieldCandidates();
+
+                    var idx = GraphTypes.IndexOf(value);
+                    if (idx != -1 && idx != _selectedGraphIndex)
+                    {
+                        _selectedGraphIndex = idx;
+                        OnPropertyChanged(nameof(SelectedGraphIndex));
+                    }
+                }
+            }
+        }
+
+        private StepFieldKind _selectedKind = StepFieldKind.Sensor; // 기본값은 센서
+        public StepFieldKind SelectedKind
+        {
+            get => _selectedKind;
+            set
+            {
+                if (_selectedKind != value)
+                {
+                    _selectedKind = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public bool ShowXSelector => SelectedGraphType == GraphType.SCATTER;
+
+        // [필드 후보 목록] 탭/시스템에 따라 달라짐
+        public ObservableCollection<FieldItem> AvailableFields { get; } = new();
+
+        // [X축 후보/선택]
+        public ObservableCollection<FieldItem> XFieldCandidates { get; } = new();
+        private FieldItem? _selectedXField;
+        public FieldItem? SelectedXField
+        {
+            get => _selectedXField;
+            set { if (_selectedXField != value) { _selectedXField = value; OnPropertyChanged(); } }
+        }
+
+        // [Y축 후보/선택] — Line/Step: 다중, Scatter/Box: 단일
+        public ObservableCollection<FieldItem> YFieldCandidates { get; } = new();
+
+        // 다중 선택(Y)용
+        public ObservableCollection<FieldItem> SelectedYFields { get; } = new();
+
+        // 단일 선택(Y)용
+        private FieldItem? _selectedYField;
+        public FieldItem? SelectedYField
+        {
+            get => _selectedYField;
+            set { if (_selectedYField != value) { _selectedYField = value; OnPropertyChanged(); } }
+        }
+
+        private bool _showMarkers;                 // Line
+        public bool ShowMarkers { get => _showMarkers; set { _showMarkers = value; OnPropertyChanged(); } }
+
+        private bool _showLegends;
+        public bool ShowLegends { get => _showLegends; set { _showLegends = value; OnPropertyChanged(); } }
+
+        public ICommand DrawGraphCommand { get; }
+
 
         public EnergyViewModel() 
         {
             WaterQualityList = Datas.GetWaterQualityVO();
-
+            GraphTypes = new ObservableCollection<GraphType>
-            TotalSandFilterEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Filtering.SandFilterEnergy") ?? 0);           
+            {
-            TotalCirculationPumpEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Filtering.CirculationPumpEnergy") ?? 0);
+                GraphType.LINE,
-            TotalHeatPumpEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Filtering.HeatPumpEnergy") ?? 0);
+                GraphType.STACKAREA,
-            TotalAirBlowerEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Filtering.AirBlowerEnergy") ?? 0);
+                GraphType.PIE
-            TotalOzoneGeneratorEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Sterilizing.OzoneGeneratorEnergy") ?? 0);
-            TotalUVSterilizerEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Sterilizing.UVSterilizerEnergy") ?? 0);
-            TotalOzoneDissolverEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Sterilizing.OzoneDissolverEnergy") ?? 0);
-            TotalExcessOzoneDestroyerEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "Sterilizing.ExcessOzoneDestroyerEnergy") ?? 0);
-            TotalEnergy = WaterQualityList.Sum(vo => ResolveEnergyField(vo, "TotalEnergy") ?? 0);
-        }
-
-        private double? ResolveEnergyField(WaterQualityVO vo, string fieldName)
-        {
-            return fieldName switch
-            {
-                "Filtering.SandFilterEnergy" => vo.Filtering.SandFilterEnergy,
-                "Filtering.CirculationPumpEnergy" => vo.Filtering.CirculationPumpEnergy,
-                "Filtering.HeatPumpEnergy" => vo.Filtering.HeatPumpEnergy,
-                "Filtering.AirBlowerEnergy" => vo.Filtering.AirBlowerEnergy,
-                "Sterilizing.OzoneGeneratorEnergy" => vo.Sterilizing.OzoneGeneratorEnergy,
-                "Sterilizing.UVSterilizerEnergy" => vo.Sterilizing.UVSterilizerEnergy,
-                "Sterilizing.OzoneDissolverEnergy" => vo.Sterilizing.OzoneDissolverEnergy,
-                "Sterilizing.ExcessOzoneDestroyerEnergy" => vo.Sterilizing.ExcessOzoneDestroyerEnergy,
-                "TotalEnergy" => vo.TotalEnergy,
-                _ => null
             };
+
+            TotalSandFilterEnergy = WaterQualityList.Sum(vo => vo.Filtering.SandFilterEnergy);           
+            TotalCirculationPumpEnergy = WaterQualityList.Sum(vo => vo.Filtering.CirculationPumpEnergy);
+            TotalHeatPumpEnergy = WaterQualityList.Sum(vo => vo.Filtering.HeatPumpEnergy);
+            TotalAirBlowerEnergy = WaterQualityList.Sum(vo => vo.Filtering.AirBlowerEnergy);
+            TotalOzoneGeneratorEnergy = WaterQualityList.Sum(vo => vo.Sterilizing.OzoneGeneratorEnergy);
+            TotalUVSterilizerEnergy = WaterQualityList.Sum(vo => vo.Sterilizing.UVSterilizerEnergy);
+            TotalOzoneDissolverEnergy = WaterQualityList.Sum(vo => vo.Sterilizing.OzoneDissolverEnergy);
+            TotalExcessOzoneDestroyerEnergy = WaterQualityList.Sum(vo => vo.Sterilizing.ExcessOzoneDestroyerEnergy);
+            TotalEnergy = WaterQualityList.Sum(vo => vo.TotalEnergy);
+
+            SelectedKind = StepFieldKind.Energy; // 기본적으로 에너지 관련 필드만 표시
+
+            DrawGraphCommand = new RelayCommand(DrawGraph);
+
+            RebuildAvailableFields();
+            RebuildFieldCandidates();
+        }
+
+        private void DrawGraph(object obj)
+        {
+            switch (SelectedGraphType)
+            {
+                case GraphType.LINE:
+                    GraphControlVM.SetMultiLineGraph(WaterQualityList, SelectedYFields, ShowMarkers, ShowLegends);
+                    break;
+                case GraphType.STACKAREA:
+                    GraphControlVM.SetStackAreaPlot(WaterQualityList, SelectedYFields, ShowMarkers, ShowLegends);
+                    break;
+                case GraphType.PIE:
+
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        private void RebuildAvailableFields()
+        {
+            AvailableFields.Clear();
+
+            // 공통 시간
+            AvailableFields.Add(new FieldItem { Name = "RecordedTime", Display = "시간", DataType = typeof(DateTime) });
+
+            AvailableFields.Add(new FieldItem { Name = "TotalEnergy", Display = "총 전력", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Filtering.SandFilterEnergy", Display = "모래여과기", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Filtering.CirculationPumpEnergy", Display = "순환펌프", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Filtering.HeatPumpEnergy", Display = "히트펌프", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Filtering.AirBlowerEnergy", Display = "에어브로와", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Sterilizing.OzoneGeneratorEnergy", Display = "오존발생기", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Sterilizing.UVSterilizerEnergy", Display = "자외선 살균기", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Sterilizing.OzoneDissolverEnergy", Display = "오존용해장치", DataType = typeof(double), Kind = StepFieldKind.Energy });
+            AvailableFields.Add(new FieldItem { Name = "Sterilizing.ExcessOzoneDestroyerEnergy", Display = "배오존장치", DataType = typeof(double), Kind = StepFieldKind.Energy });
+        }
+
+        private void RebuildFieldCandidates()
+        {
+            // 후보 초기화
+            XFieldCandidates.Clear();
+            YFieldCandidates.Clear();
+
+            // X축: 시간 우선
+            foreach (var f in AvailableFields)
+            {
+                XFieldCandidates.Add(f);
+                if (SelectedGraphType == GraphType.LINE || SelectedGraphType == GraphType.STACKAREA) break;
+            }
+            SelectedXField = AvailableFields.FirstOrDefault(f => f.DataType == typeof(DateTime))
+                             ?? AvailableFields.FirstOrDefault();
+
+            IEnumerable<FieldItem> src = AvailableFields.Where(f => f.Kind == SelectedKind);
+
+            if (SelectedGraphType is GraphType.LINE or GraphType.STACKAREA or GraphType.PIE)
+            {
+                // 수치형만 (LINE/STACKAREA/PIE 연속값 위주)
+                src = src.Where(f => f.DataType == typeof(double));
+            }
+
+            // Y축 후보: 수치형
+            foreach (var f in src)
+            {
+                if (SelectedGraphType == GraphType.STACKAREA && f.Name.Equals("TotalEnergy")) continue; 
+                YFieldCandidates.Add(f);
+            }
+
+            // 기본 선택 세팅 (타입별)
+            SelectedYFields.Clear();
+            SelectedYField = null;
+
+            switch (SelectedGraphType)
+            {
+                case GraphType.LINE:
+                    //var def = YFieldCandidates.FirstOrDefault();
+                    //if (def != null) SelectedYFields.Add(def);
+                    break;
+                case GraphType.STACKAREA:
+                    SelectedYField = YFieldCandidates.FirstOrDefault();
+                    break;
+
+                case GraphType.PIE:
+                    SelectedYField = YFieldCandidates.FirstOrDefault();
+
+                    break;
+            }
+            OnPropertyChanged(nameof(SelectedYFields));
         }
 
         public event PropertyChangedEventHandler? PropertyChanged;

SmartAquaViewer/ViewModel/GraphControlViewModel.cs

@@ -90,6 +90,72 @@ namespace SmartAquaViewer.ViewModel
             Model.InvalidatePlot(true);
         }
 
+        public void SetMultiLineGraph(
+            List<WaterQualityVO> collection,
+            ObservableCollection<FieldItem> yFields,
+            bool showMarker, bool showLegend)
+        {
+            Model.Series.Clear();
+            Model.Axes.Clear();
+            var xAxis = new DateTimeAxis
+            {
+                Position = AxisPosition.Bottom,
+                Title = "시간",
+                StringFormat = "HH:mm:ss",
+                IntervalType = DateTimeIntervalType.Minutes,
+                MajorGridlineStyle = LineStyle.Solid,
+                MinorGridlineStyle = LineStyle.Dot
+            };
+            var yAxis = new LinearAxis
+            {
+                Position = AxisPosition.Left,
+                Title = "전력 (kW)",
+                MajorGridlineStyle = LineStyle.Solid,
+                MinorGridlineStyle = LineStyle.Dot
+            };
+            Model.Axes.Add(xAxis);
+            Model.Axes.Add(yAxis);
+
+            foreach (var field in yFields)
+            {
+                var series = new LineSeries()
+                {
+                    Title = field.Display,
+                    MarkerType = showMarker ? MarkerType.Circle : MarkerType.None,
+                    MarkerSize = showMarker ? 3 : 0
+                };
+                foreach (var r in collection.OrderBy(r => r.RecordedTime))
+                {
+                    double? y = null;
+                    y = ResolveEnergyField(r, field.Name!);
+                    if (!y.HasValue) continue;
+                    series.Points.Add(new DataPoint(
+                        DateTimeAxis.ToDouble(r.RecordedTime),
+                        y.Value));
+                }
+                if (series.Points.Count > 0)
+                {
+                    // 트래커 포맷: 시간, 수조, 지표, 값
+                    series.TrackerFormatString =
+                        $"시간: {{2:HH:mm}}\n{field.Display}: {{4:0.###}}";
+                    Model.Series.Add(series);
+                }
+            }
+
+            Model.Legends.Clear();
+            Model.IsLegendVisible = showLegend;
+            Model.Legends.Add(new Legend
+            {
+                LegendPlacement = LegendPlacement.Outside,
+                LegendPosition = LegendPosition.RightTop,
+                LegendOrientation = LegendOrientation.Vertical,
+                LegendTitle = "전력 소비량",
+                TextColor = OxyColors.Black
+            });
+
+            Model.InvalidatePlot(true);
+        }
+
         public void SetDefaultLineGraph(
             List<WaterQualityVO> collection,
             MonitorTab selectedTab,
@@ -372,7 +438,7 @@ namespace SmartAquaViewer.ViewModel
             Model.InvalidatePlot(true);
         }
 
-        public void SetStatusSeriesStopPlot(List<WaterQualityVO> rows, 
+        public void SetStatusSeriesStopPlot(List<WaterQualityVO> collection, 
             FieldItem yAxisField, bool showMarker = false)
         {
             Model.Series.Clear();
@@ -384,7 +450,7 @@ namespace SmartAquaViewer.ViewModel
             };
 
             int i = 0;
-            foreach (var r in rows.OrderBy(r => r.RecordedTime))
+            foreach (var r in collection.OrderBy(r => r.RecordedTime))
             {
                 string? rawValue = ResolveStatus(r, yAxisField.Name);
                 if (rawValue != null)
@@ -407,6 +473,97 @@ namespace SmartAquaViewer.ViewModel
             Model.InvalidatePlot(true);
         }
 
+        public void SetStackAreaPlot(List<WaterQualityVO> collection, ObservableCollection<FieldItem> yFields,
+            bool showMarker, bool showLegends)
+        {
+            Model.Series.Clear();
+            Model.Axes.Clear();
+
+            // X축: 시간
+            var xAxis = new DateTimeAxis
+            {
+                Position = AxisPosition.Bottom,
+                Title = "시간",
+                StringFormat = "HH:mm:ss",
+                IntervalType = DateTimeIntervalType.Minutes,
+                MajorGridlineStyle = LineStyle.Solid,
+                MinorGridlineStyle = LineStyle.Dot
+            };
+            // Y축: 전력
+            var yAxis = new LinearAxis
+            {
+                Position = AxisPosition.Left,
+                Title = "전력 (kW)",
+                MajorGridlineStyle = LineStyle.Solid,
+                MinorGridlineStyle = LineStyle.Dot
+            };
+
+            Model.Axes.Add(xAxis);
+            Model.Axes.Add(yAxis);
+
+            // 시간순 정렬
+            var records = collection.OrderBy(r => r.RecordedTime).ToList();
+            int n = records.Count;
+
+            // 누적 버퍼
+            double[] prevStack = new double[n];
+
+            foreach (var field in yFields)
+            {
+                var area = new AreaSeries
+                {
+                    Title = field.Display,
+                    StrokeThickness = 1,
+                    MarkerType = showMarker ? MarkerType.Circle : MarkerType.None,
+                };
+
+                var upper = new List<DataPoint>();
+                var lower = new List<DataPoint>();
+
+                for (int i = 0; i < n; i++)
+                {
+                    double? y = ResolveEnergyField(records[i], field.Name!);
+                    double value = y ?? 0;
+
+                    double x = DateTimeAxis.ToDouble(records[i].RecordedTime);
+
+                    // 현재 값 누적
+                    double bottom = prevStack[i];
+                    double top = bottom + value;
+
+                    lower.Add(new DataPoint(x, bottom));
+                    upper.Add(new DataPoint(x, top));
+
+                    prevStack[i] = top;
+                }
+
+                area.Points.AddRange(upper);   // 위쪽 경계
+                area.Points2.AddRange(lower);  // 아래쪽 경계
+                Model.Series.Add(area);
+            }
+
+            // 레전드
+            Model.Legends.Clear();
+            Model.IsLegendVisible = showLegends;
+            Model.Legends.Add(new Legend
+            {
+                LegendPlacement = LegendPlacement.Outside,
+                LegendPosition = LegendPosition.RightTop,
+                LegendOrientation = LegendOrientation.Vertical,
+                LegendTitle = "전력 소비량",
+                TextColor = OxyColors.Black
+            });
+
+            Model.InvalidatePlot(true);
+        }
+
+        public void SetStackAreaPlot(
+            List<WaterQualityVO> rows,
+            FieldItem yAxisField)
+        {
+
+        }
+
         private DateTime FloorToBucket(DateTime dt, TimeSpan bucket)
         {
             long ticks = bucket.Ticks;
@@ -478,6 +635,23 @@ namespace SmartAquaViewer.ViewModel
             };
         }
 
+        private double? ResolveEnergyField(WaterQualityVO vo, string fieldName)
+        {
+            return fieldName switch
+            {
+                "Filtering.SandFilterEnergy" => vo.Filtering.SandFilterEnergy,
+                "Filtering.CirculationPumpEnergy" => vo.Filtering.CirculationPumpEnergy,
+                "Filtering.HeatPumpEnergy" => vo.Filtering.HeatPumpEnergy,
+                "Filtering.AirBlowerEnergy" => vo.Filtering.AirBlowerEnergy,
+                "Sterilizing.OzoneGeneratorEnergy" => vo.Sterilizing.OzoneGeneratorEnergy,
+                "Sterilizing.UVSterilizerEnergy" => vo.Sterilizing.UVSterilizerEnergy,
+                "Sterilizing.OzoneDissolverEnergy" => vo.Sterilizing.OzoneDissolverEnergy,
+                "Sterilizing.ExcessOzoneDestroyerEnergy" => vo.Sterilizing.ExcessOzoneDestroyerEnergy,
+                "TotalEnergy" => vo.TotalEnergy,
+                _ => null
+            };
+        }
+
         private double? ResolveUvPowerPerId(WaterQualityVO r, string fieldName)
         {
             // 케이스 A

SmartAquaViewer/ViewModel/MonitoringViewModel.cs

@@ -254,7 +254,7 @@ namespace SmartAquaViewer.ViewModel
                              g.OrderBy(r => r.RecordedTime))
                 );
            
-            GraphTypes = new ObservableCollection<GraphType>();
+            GraphTypes = [];
             SelectedTab = MonitorTab.Tank; // Default system
             SetGraphType();