feat: 파이차트 생성 기능

SmartAquaViewer/View/EnegyView.xaml

@@ -182,6 +182,7 @@
                             </Style>
                         </Grid.Resources>
 
+                        <StackPanel>
                             <StackPanel Style="{StaticResource VisibleWhenLineNStackArea}">
                                 <Grid Margin="0 0 0 20" >
                                     <Grid.ColumnDefinitions>
@@ -195,7 +196,7 @@
                                                FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"/>
                                 </Grid>
 
-                            <Grid Margin="0 0 0 15" Style="{StaticResource VisibleWhenLineNStackArea}">
+                                <Grid Margin="0 0 0 15">
                                     <Grid.ColumnDefinitions>
                                         <ColumnDefinition Width="80"/>
                                         <ColumnDefinition/>
@@ -216,20 +217,84 @@
                                                  Style="{StaticResource MaterialDesignFilterChipListBox}"/>
                                     </Border>
                                 </Grid>
+                            </StackPanel>
+
+                            <StackPanel Style="{StaticResource VisibleWhenPie}">
+                                <Grid Margin="0 0 0 15">
+                                    <Grid.ColumnDefinitions>
+                                        <ColumnDefinition Width="80"/>
+                                        <ColumnDefinition/>
+                                    </Grid.ColumnDefinitions>
+                                    <TextBlock Text="필드" 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">
+                                    <RadioButton x:Name="rbStatus" Content="합계" 
+                                                 GroupName="pie" Margin="0 0 30 0"
+                                                 Foreground="White" FontSize="20"
+                                                 Style="{StaticResource MaterialDesignUserForegroundRadioButton}"/>
+                                    <RadioButton x:Name="pie" Content="평균" 
+                                                 GroupName="strpPlot" Grid.Column="1" 
+                                                 Foreground="White" FontSize="20"
+                                                 Style="{StaticResource MaterialDesignUserForegroundRadioButton}"/>
+                                </StackPanel>
+                            </StackPanel>
+
+                            
+                        </StackPanel>
+                    </Grid>
+                </StackPanel>
 
-                            <StackPanel Orientation="Horizontal" Margin="0 0 0 15" Grid.Row="4">
+                <StackPanel Orientation="Horizontal" Margin="15 0 0 0" Grid.Row="1">
                     <CheckBox Content="마커 표시" IsChecked="{Binding ShowMarkers}" Margin="0 0 15 0"
                               FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"
-                                          VerticalContentAlignment="Center"
+                              VerticalContentAlignment="Center">
-                                          Style="{StaticResource MaterialDesignUserForegroundCheckBox}"/>
+                        <CheckBox.Style>
+                            <Style TargetType="CheckBox" BasedOn="{StaticResource MaterialDesignUserForegroundCheckBox}">
+                                <Setter Property="Visibility" Value="Collapsed"/>
+                                <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>
+                        </CheckBox.Style>
+                    </CheckBox>
                     <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>
+                    <CheckBox Content="도넛 모드" IsChecked="{Binding IsDonutMode}" Margin="0 0 15 0"
-                        </StackPanel>
+                              FontSize="20" FontFamily="{StaticResource SCDream4}" Foreground="White"
-
+                              VerticalContentAlignment="Center">
-                    </Grid>
+                        <CheckBox.Style>
+                            <Style TargetType="CheckBox" BasedOn="{StaticResource MaterialDesignUserForegroundCheckBox}">
+                                <Setter Property="Visibility" Value="Collapsed"/>
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding SelectedGraphType}" Value="PIE">
+                                        <Setter Property="Visibility" Value="Visible"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                        </CheckBox.Style>
+                    </CheckBox>
                 </StackPanel>
 
                 <StackPanel Orientation="Horizontal" Margin="15 0" Grid.Row="1" HorizontalAlignment="Right">

SmartAquaViewer/ViewModel/EnergyViewModel.cs

@@ -277,7 +277,7 @@ namespace SmartAquaViewer.ViewModel
                     GraphControlVM.SetStackAreaPlot(WaterQualityList, SelectedYFields, ShowMarkers, ShowLegends);
                     break;
                 case GraphType.PIE:
-
+                    GraphControlVM.SetPieChart(WaterQualityList, SelectedYFields);
                     break;
                 default:
                     break;
@@ -328,7 +328,7 @@ namespace SmartAquaViewer.ViewModel
             // Y축 후보: 수치형
             foreach (var f in src)
             {
-                if (SelectedGraphType == GraphType.STACKAREA && f.Name.Equals("TotalEnergy")) continue; 
+                if (SelectedGraphType is GraphType.STACKAREA or GraphType.PIE && f.Name.Equals("TotalEnergy")) continue; 
                 YFieldCandidates.Add(f);
             }
 
@@ -347,8 +347,7 @@ namespace SmartAquaViewer.ViewModel
                     break;
 
                 case GraphType.PIE:
-                    SelectedYField = YFieldCandidates.FirstOrDefault();
+                    //SelectedYField = YFieldCandidates.FirstOrDefault();
-
                     break;
             }
             OnPropertyChanged(nameof(SelectedYFields));

SmartAquaViewer/ViewModel/GraphControlViewModel.cs

@@ -557,11 +557,61 @@ namespace SmartAquaViewer.ViewModel
             Model.InvalidatePlot(true);
         }
 
-        public void SetStackAreaPlot(
+        public void SetPieChart(List<WaterQualityVO> collection, ObservableCollection<FieldItem> fields,
-            List<WaterQualityVO> rows,
+            bool useAverage = false, bool donut = true,
-            FieldItem yAxisField)
+            double minLabelPercent = 0.03)
         {
+            Model.Series.Clear();
+            Model.Axes.Clear();
+
+            if (collection == null || collection.Count == 0)
+            {
+                Model.InvalidatePlot(true);
+                return;
+            }
 
+            if (fields.Count == 0)
+            {
+                Model.InvalidatePlot(true);
+                return;
+            }
+
+            var agg = new List<(string name, double value)>();
+            foreach (var f in fields)
+            {
+                var values = collection.Select(r => ResolveEnergyField(r, f.Name!) ?? 0.0);
+                double v = useAverage ? (values.Any() ? values.Average() : 0.0) : values.Sum();
+                agg.Add((f.Display ?? f.Name!, v));
+            }
+
+            List<(string name, double value)> finalList;
+            finalList = agg;
+
+            double total = Math.Max(1e-9, finalList.Sum(x => x.value));
+
+            var ps = new PieSeries
+            {
+                AngleSpan = 360,
+                StartAngle = 0,
+                StrokeThickness = 0.5,
+                InsideLabelPosition = 0.8,
+                OutsideLabelFormat = null // 라벨은 내부만
+            };
+            if (donut) ps.InnerDiameter = 0.6; // 도넛 모드
+
+            foreach (var (name, value) in finalList)
+            {
+                var pct = value / total;
+                var label = (pct >= minLabelPercent) ? $"{name} ({pct:P0})" : ""; // 작은 조각 라벨 숨김
+                ps.Slices.Add(new PieSlice(name, value) { });
+            }
+
+            Model.Title = $"설비별 {(useAverage ? "평균" : "합계")} 소비 비중";
+            Model.Series.Add(ps);
+
+            Model.IsLegendVisible = true;
+
+            Model.InvalidatePlot(true);
         }
 
         private DateTime FloorToBucket(DateTime dt, TimeSpan bucket)