Add graph service

StructureHelperCommon/Models/Functions/FormulaFunction.cs

@@ -103,7 +103,6 @@ namespace StructureHelperCommon.Models.Functions
         {
             double yValue = 0;
             current_xValue = xValue;
-            Check();
             yValue = Math.Round(Expression.CalculateValue(new double[] { xValue }), 2);
             return yValue;
         }

StructureHelperCommon/Services/GraphSettings.cs

@@ -33,7 +33,7 @@ namespace StructureHelperCommon.Services
             }
             return _labels;
         }
-        public SeriesCollection GetSeriesCollection()
+        public LineSeries GetLineSeries()
         {
             foreach (GraphPoint point in GraphPoints)
             {
@@ -41,9 +41,21 @@ namespace StructureHelperCommon.Services
             }
             _lineSeries.Values = _chartValues;
             _lineSeries.Stroke = new SolidColorBrush(_strokeColor);
+            _lineSeries.Fill = Brushes.Transparent;
+            return _lineSeries;
+        }
+        /*public SeriesCollection GetSeriesCollection()
+        {
+            foreach (GraphPoint point in GraphPoints)
+            {
+                _chartValues.Add(Math.Round(point.Y, 2));
+            }
+            _lineSeries.Values = _chartValues;
+            _lineSeries.Stroke = new SolidColorBrush(_strokeColor);
+            
             _lineSeries.Fill = Brushes.Transparent;
             _seriesCollection.Add(_lineSeries);
             return _seriesCollection;
-        }
+        }*/
     }
 }