Implement path selection

PamhagenSysCtrl/Helpers/Pipeline/Graph.cs

@@ -62,7 +62,7 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             foreach (var o in start.Outputs) {
                 if (o.End == end) {
                     return new(start, [(o, o.End)]);
-                } else if (!valid(o.End)) {
+                } else if (!valid(o.End) || (!o.IsTwoWay && o.End == start) || (o.IsTwoWay && o.End == start)) {
                     continue;
                 }
 
@@ -91,13 +91,13 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             }
         }
 
-        public ISet<INode> Update(double x, double y) {
+        public ISet<INode> Update(double x, double y, bool down) {
             HashSet<INode> hover = new();
             foreach (var e in Edges) {
-                e.Update(x, y);
+                e.Update();
             }
             foreach (var n in Nodes) {
-                if (n.Update(x, y)) {
+                if (n.Update(x, y, down)) {
                     hover.Add(n);
                 }
             }