old data

StgSharp.Model/Step/Items/StepEdge.cs

@@ -28,22 +28,21 @@
 //     
 //-----------------------------------------------------------------------
 //-----------------------------------------------------------------------
-using StgSharp.Model.Step;
-
 using StgSharp.Script;
+
 using StgSharp.Script.Express;
 
 using System.Collections.Generic;
 
-namespace StgSharp.Model.Step
+namespace StgSharp.Modeling.Items
 {
-    public class StepEdge : StepTopologicalRepresentationItem, IExpConvertableFrom<StepEdge>
+    public abstract class StepEdge : StepTopologicalRepresentationItem
     {
 
-        protected StepEdge( StepModel model ) : base( model ) { }
+        protected StepEdge() : base( string.Empty ) { }
 
-        protected StepEdge( StepModel model, StepVertex edgeStart, StepVertex edgeEnd )
-            : base( model )
+        protected StepEdge( string name, StepVertex edgeStart, StepVertex edgeEnd )
+            : base( name )
         {
             EdgeStart = edgeStart;
             EdgeEnd = edgeEnd;
@@ -53,16 +52,15 @@ namespace StgSharp.Model.Step
 
         public StepVertex EdgeEnd { get; set; }
 
-        public void FromInstance( StepEdge entity )
+        internal override IEnumerable<StepRepresentationItem> GetReferencedItems()
         {
-            base.FromInstance( entity );
-            EdgeStart = entity.EdgeStart;
-            EdgeEnd = entity.EdgeEnd;
-        }
+            if( EdgeStart != null ) {
+                yield return EdgeStart;
+            }
 
-        public override bool IsConvertableTo( string entityName )
-        {
-            return base.IsConvertableTo( entityName ) || entityName == "StepEdge";
+            if( EdgeEnd != null ) {
+                yield return EdgeEnd;
+            }
         }
 
     }