Add heat exchangers

PamhagenSysCtrl/Helpers/Pipeline/Graph.cs

@@ -54,11 +54,23 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             return p;
         }
 
+        public Path? GetPath(IEnumerable<INode> points, Func<INode, bool>? valid = null) {
+            if (points.Count() < 2) throw new ArgumentException("Path is too short");
+            var start = points.First();
+            var path = new Path(start, []);
+            foreach (var end in points.Skip(1)) {
+                if (GetPath(start, end, valid, visited: [..path.Hops.Select(h => h.Node)]) is not Path p)
+                    return null;
+                path.Hops = [..path.Hops, ..p.Hops];
+                start = end;
+            }
+            return path;
+        }
+
         public Path? GetPath(INode start, INode end, Func<INode, bool>? valid = null, HashSet<INode>? visited = null) {
             if (!Nodes.Contains(start) || !Nodes.Contains(end)) throw new ArgumentException("Start/end node not contained in graph");
             valid ??= a => true;
-            visited ??= [];
-            visited.Add(start);
+            visited = [.. visited ?? [], start];
             List<(IEdge, INode)> hops = [];
             Path? path = null;
             foreach (var o in start.Outputs) {

PamhagenSysCtrl/Helpers/Pipeline/HeatExchanger.cs

@@ -0,0 +1,59 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace PamhagenSysCtrl.Helpers.Pipeline {
+    public class HeatExchanger : INode {
+
+        public const double WIDTH = 30;
+        public const double HEIGHT = 120;
+
+        public double CenterX { get; set; }
+        public double CenterY { get; set; }
+        public string Label { get; set; }
+        public ISet<IEdge> Inputs { get; init; }
+        public ISet<IEdge> Outputs { get; init; }
+
+        private Shape? _rect;
+        private TextBlock? _text;
+
+        public HeatExchanger(string label, double x, double y) {
+            CenterX = x;
+            CenterY = y;
+            Label = label;
+            Inputs = new HashSet<IEdge>();
+            Outputs = new HashSet<IEdge>();
+        }
+
+        public void Draw(Canvas canvas) {
+            _rect = new Rectangle() {
+                Width = WIDTH,
+                Height = HEIGHT,
+                Stroke = Brushes.Black,
+                StrokeThickness = 2,
+                Fill = Brushes.WhiteSmoke,
+            };
+            _text = new() {
+                Text = Label,
+                FontSize = 12,
+                Width = HEIGHT,
+                TextAlignment = TextAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+                RenderTransform = new RotateTransform(270),
+            };
+            _rect.SetValue(Canvas.LeftProperty, CenterX - WIDTH / 2);
+            _rect.SetValue(Canvas.TopProperty, CenterY - HEIGHT / 2);
+            _text.SetValue(Canvas.LeftProperty, CenterX - 9);
+            _text.SetValue(Canvas.TopProperty, CenterY + HEIGHT / 2);
+            canvas.Children.Add(_rect);
+            canvas.Children.Add(_text);
+        }
+
+        public bool Update(double x, double y, bool down) {
+            var hover = Math.Abs(x - CenterX) <= WIDTH / 2 && Math.Abs(y - CenterY) <= HEIGHT / 2;
+            _rect?.Fill = hover ? Brushes.LightGray : Brushes.WhiteSmoke;
+            return hover;
+        }
+    }
+}

PamhagenSysCtrl/Helpers/Pipeline/ISource.cs

@@ -2,6 +2,5 @@
     public interface ISource : INode {
         public double BottomY { get; }
         public bool IsFilled { get; }
-        public bool IsSelected { get; set; }
     }
 }

PamhagenSysCtrl/Helpers/Pipeline/Path.cs

@@ -3,7 +3,7 @@
             INode Start,
             IEnumerable<(IEdge Edge, INode Node)> Hops)
     {
-        public readonly double Bends => Hops.Sum(h => h.Edge.Start.CenterX != h.Edge.End.CenterX && h.Edge.Start.CenterY != h.Edge.End.CenterY ? 1 : 0);
+        public readonly double Bends => Hops.Sum(h => (h.Node is not Valve && h.Node is not PipeJoin ? 1 : 0) + (h.Edge.Start.CenterX != h.Edge.End.CenterX && h.Edge.Start.CenterY != h.Edge.End.CenterY ? 1 : 0));
         public readonly double Length => Hops.Sum(h => Math.Abs(h.Edge.Start.CenterX - h.Edge.End.CenterX) + Math.Abs(h.Edge.Start.CenterY - h.Edge.End.CenterY));
     }
 }

PamhagenSysCtrl/Helpers/Pipeline/Tank.cs

@@ -16,7 +16,6 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
         public string Label { get; set; }
         public bool IsFull => CallbackIsFull();
         public bool IsFilled => CallbackIsFilled();
-        public bool IsSelected { get; set; }
 
         public ISet<IEdge> Inputs { get; init; }
         public ISet<IEdge> Outputs { get; init; }
@@ -65,7 +64,7 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
 
         public bool Update(double x, double y, bool down) {
             var hover = Math.Abs(x - CenterX) <= WIDTH / 2 && Math.Abs(y - CenterY) <= HEIGHT / 2;
-            _rect?.Fill = IsSelected ? Brushes.LightGray : hover ? Brushes.LightGray : Brushes.WhiteSmoke;
+            _rect?.Fill = hover ? Brushes.LightGray : Brushes.WhiteSmoke;
             return hover;
         }
     }

PamhagenSysCtrl/Helpers/Pipeline/Trough.cs

@@ -14,7 +14,6 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
         public double BottomY => CenterY + HEIGHT / 2;
         public string Label { get; set; }
         public bool IsFilled => CallbackIsFilled();
-        public bool IsSelected { get; set; }
         public ISet<IEdge> Inputs { get; init; }
         public ISet<IEdge> Outputs { get; init; }
 
@@ -57,7 +56,7 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
 
         public bool Update(double x, double y, bool down) {
             var hover = Math.Abs(x - CenterX) <= WIDTH / 2 && Math.Abs(y - CenterY) <= HEIGHT / 2;
-            _rect?.Fill = IsSelected ? Brushes.LightGray : hover ? Brushes.LightGray : Brushes.WhiteSmoke;
+            _rect?.Fill = hover ? Brushes.LightGray : Brushes.WhiteSmoke;
             return hover;
         }
     }

PamhagenSysCtrl/Helpers/Pipeline/Valve.cs

@@ -61,7 +61,7 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
 
         public bool Update(double x, double y, bool down) {
             var hover = Math.Sqrt(Math.Pow(CenterX - x, 2) + Math.Pow(CenterY - y, 2)) <= DIAMETER / 2;
-            _circle?.Fill = IsLocked ? Brushes.Red : Highlight ?? (hover ? Brushes.LightGray : Brushes.DarkGray);
+            _circle?.Fill = IsLocked ? Brushes.Orange : Highlight ?? (hover ? Brushes.LightGray : Brushes.DarkGray);
             return hover;
         }
     }