Add CenterValves to presses

PamhagenSysCtrl/Helpers/Pipeline/CenterValve.cs

@@ -0,0 +1,69 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace PamhagenSysCtrl.Helpers.Pipeline {
+    public class CenterValve : INode {
+
+        public const double DIAMETER = 24;
+
+        public double CenterX { get; set; }
+        public double CenterY { get; set; }
+        public string Label { get; set; }
+        public Brush? Highlight { get; set; }
+
+        public bool IsOpen => CallbackIsOpen();
+        public ISet<IEdge> Inputs { get; init; }
+        public ISet<IEdge> Outputs { get; init; }
+
+        protected Func<bool> CallbackIsOpen;
+
+        private Shape? _circle;
+        private TextBlock? _text;
+
+        public CenterValve(string label, double x, double y, Func<bool> cbOpen) {
+            CenterX = x;
+            CenterY = y;
+            Label = label;
+            CallbackIsOpen = cbOpen;
+            Inputs = new HashSet<IEdge>();
+            Outputs = new HashSet<IEdge>();
+        }
+
+        public void Draw(Canvas canvas) {
+            _circle = new Ellipse() {
+                Height = DIAMETER,
+                Width = DIAMETER,
+                Fill = Brushes.DarkGray,
+                Stroke = Brushes.Black,
+                StrokeThickness = 2,
+            };
+            _circle.SetValue(Canvas.LeftProperty, CenterX - DIAMETER / 2);
+            _circle.SetValue(Canvas.TopProperty, CenterY - DIAMETER / 2);
+            _text = new() {
+                Text = Label,
+                FontSize = 10,
+                Width = DIAMETER,
+                Height = DIAMETER,
+                TextAlignment = TextAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+            };
+            _text.SetValue(Canvas.LeftProperty, CenterX - DIAMETER / 2);
+            _text.SetValue(Canvas.TopProperty, CenterY - DIAMETER / 2 + 5.5);
+            canvas.Children.Add(_circle);
+            canvas.Children.Add(_text);
+        }
+
+        public bool IsInside(double x, double y) {
+            return Math.Sqrt(Math.Pow(CenterX - x, 2) + Math.Pow(CenterY - y, 2)) <= DIAMETER / 2;
+        }
+
+        public void Update(bool isHovering, bool isPressed) {
+            _circle?.Fill =
+              !IsOpen ? PamhagenBrushes.Red :
+              IsOpen ? PamhagenBrushes.Green :
+              Highlight ?? Brushes.DarkGray;
+        }
+    }
+}

PamhagenSysCtrl/Helpers/Pipeline/Graph.cs

@@ -34,10 +34,10 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             return p;
         }
 
-        public Inlet CreateInlet(INode start, ISink end) {
+        public Inlet CreateInlet(INode start, ISink end, bool sideways = false) {
             Nodes.Add(start);
             Nodes.Add(end);
-            var p = new Inlet(start, end, start.CenterX > end.CenterX);
+            var p = new Inlet(start, end, sideways);
             start.Outputs.Add(p);
             end.Inputs.Add(p);
             Edges.Add(p);

PamhagenSysCtrl/Helpers/Pipeline/Inlet.cs

@@ -30,9 +30,9 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             var x1 = Start.CenterX;
             var y1 = Start.CenterY;
             var x2 = Start.CenterX;
-            var y2 = Sink.TopY - 10;
-            var x3 = Start.CenterX + (Orientation ? -20 : 20);
-            var y3 = Sink.TopY + 20;
+            var y2 = Orientation ? Sink.CenterY - 10 : Sink.TopY - 10;
+            var x3 = Orientation ? Sink.CenterX : Start.CenterX + (Start.CenterX == End.CenterX ? 0 : Start.CenterX > End.CenterX ? -20 : 20);
+            var y3 = Orientation ? Sink.CenterY - 10 : Sink.TopY + 20;
             _outer1 = new Line() {
                 X1 = x1,
                 Y1 = y1,