Fix best-fit viewer bounds for angled pairs

OpenNest/Forms/BestFitViewerForm.cs

@@ -45,6 +45,7 @@ namespace OpenNest.Forms
 
         public BestFitResult SelectedResult { get; private set; }
         public Drawing SelectedDrawing => activeDrawing;
+        public List<Part> SelectedParts { get; private set; }
 
         public BestFitViewerForm(DrawingCollection drawings, Plate plate, Units units = Units.Inches)
         {
@@ -318,12 +319,12 @@ namespace OpenNest.Forms
             var cell = new BestFitCell(colorScheme);
             cell.PartColor = partColor;
             cell.Dock = DockStyle.Fill;
+
+            var parts = result.BuildCanonicalParts();
             cell.Plate.Size = new Geometry.Size(
                 result.BoundingHeight,
                 result.BoundingWidth);
 
-            var parts = result.BuildParts(drawing);
-
             foreach (var part in parts)
                 cell.Plate.Parts.Add(part);
 
@@ -332,6 +333,7 @@ namespace OpenNest.Forms
             cell.DoubleClick += (sender, e) =>
             {
                 SelectedResult = result;
+                SelectedParts = result.BuildSourceParts(drawing);
                 DialogResult = DialogResult.OK;
                 Close();
             };

OpenNest/Forms/MainForm.cs

@@ -686,7 +686,8 @@ namespace OpenNest.Forms
             {
                 if (form.ShowDialog(this) == DialogResult.OK && form.SelectedResult != null)
                 {
-                    var parts = form.SelectedResult.BuildParts(form.SelectedDrawing);
+                    var parts = form.SelectedParts
+                        ?? form.SelectedResult.BuildSourceParts(form.SelectedDrawing);
                     activeForm.PlateView.SetAction(typeof(ActionClone), parts);
                 }
             }