Added UValueAW

Facade_Engine/Compute/UValueAW.cs

@@ -0,0 +1,91 @@
+/*
+ * This file is part of the Buildings and Habitats object Model (BHoM)
+ * Copyright (c) 2015 - 2022, the respective contributors. All rights reserved.
+ *
+ * Each contributor holds copyright over their respective contributions.
+ * The project versioning (Git) records all such contribution source information.
+ *                                           
+ *                                                                              
+ * The BHoM is free software: you can redistribute it and/or modify         
+ * it under the terms of the GNU Lesser General Public License as published by  
+ * the Free Software Foundation, either version 3.0 of the License, or          
+ * (at your option) any later version.                                          
+ *                                                                              
+ * The BHoM is distributed in the hope that it will be useful,              
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of               
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                 
+ * GNU Lesser General Public License for more details.                          
+ *                                                                            
+ * You should have received a copy of the GNU Lesser General Public License     
+ * along with this code. If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.      
+ */
+
+using BH.oM.Geometry;
+using BH.oM.Dimensional;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using BH.oM.Facade;
+using BH.oM.Facade.Elements;
+using BH.oM.Base;
+using BH.Engine.Geometry;
+using BH.Engine.Spatial;
+using BH.Engine.Base;
+using BH.oM.Facade.Fragments;
+
+using BH.oM.Base.Attributes;
+using BH.oM.Facade.Results;
+using System.ComponentModel;
+
+namespace BH.Engine.Facade
+{
+    public static partial class Compute
+    {
+        /***************************************************/
+        /****          Public Methods                   ****/
+        /***************************************************/
+
+        [Description("Returns effective U-Value of a collection of Facade objects calculated using the Area Weighting Method. Requires center of opening U-value, frame U-value and edge U-value as OpeningConstruction and FrameEdgeProperty fragments for Openings, and UValueContinuous fragment for Panels.")]
+        [Input("objs", "Objects to find U-value for.")]
+        [Output("effectiveUValue", "Effective total U-value result of objects calculated using area weighting.")]
+        public static OverallUValue UValueAW(this List<IFacadeObject> objs)
+        {
+            double uValueProduct = 0;
+            double totalArea = 0;
+            foreach (IFacadeObject obj in objs)
+            {
+                double area = 0;
+                double uValue = 0;
+                if (obj is Panel panel)
+                {
+                    area = panel.Area();
+                    uValue = UValuePanelAW(panel).UValue;
+                }
+                else if (obj is Opening opening)
+                {
+                    area = opening.Area();
+                    uValue = UValueOpeningAW(opening).UValue;
+                }
+                else
+                {
+                    Base.Compute.RecordWarning($"Object {obj.BHoM_Guid} is of a type currently not supported for UValue methods. It has been excluded from the calculation.");
+                    continue;
+                }
+                uValueProduct += uValue * area;
+                totalArea += area;
+            }
+            if (totalArea == 0)
+            {
+                Base.Compute.RecordError("Objects have a total calculated area of 0. Ensure Objects are valid with associated edges defining their geometry and try again.");
+                return null;
+            }
+
+            double effectiveUValue = uValueProduct / totalArea;
+            OverallUValue result = new OverallUValue(effectiveUValue, objs.Select(x => x.BHoM_Guid as IComparable).ToList());
+            return result;
+        }
+
+        /***************************************************/
+
+    }
+}