feat(shapes): generate unique drawing names from parameters and add toolbar button

Shape library drawings now get descriptive names based on their
parameters (e.g. "Rectangle 12x6", "Circle 8 Dia") instead of generic
type names, preventing silent duplicates in the DrawingCollection
HashSet. Added a Shape Library button to the Drawings tab toolbar
and removed separators between toolbar buttons for a cleaner look.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

OpenNest.Core/CNC/CuttingStrategy/ContourCuttingStrategy.cs

@@ -305,9 +305,6 @@ namespace OpenNest.CNC.CuttingStrategy
                 subPgm.Codes.AddRange(leadIn.Generate(relativePoint, normal, winding));
                 var reindexed = relativeShape.ReindexAt(relativePoint, relativeCircle);
 
-                if (Parameters.TabsEnabled && Parameters.TabConfig != null)
-                    reindexed = TrimShapeForTab(reindexed, relativePoint, Parameters.TabConfig.Size);
-
                 subPgm.Codes.AddRange(ConvertShapeToMoves(reindexed, relativePoint));
                 subPgm.Codes.AddRange(leadOut.Generate(relativePoint, normal, winding));
                 subPgm.Mode = Mode.Incremental;
@@ -331,7 +328,7 @@ namespace OpenNest.CNC.CuttingStrategy
 
             var reindexedShape = shape.ReindexAt(point, entity);
 
-            if (Parameters.TabsEnabled && Parameters.TabConfig != null)
+            if (Parameters.TabsEnabled && Parameters.TabConfig != null && contourType == ContourType.External)
                 reindexedShape = TrimShapeForTab(reindexedShape, point, Parameters.TabConfig.Size);
 
             program.Codes.AddRange(ConvertShapeToMoves(reindexedShape, point));

OpenNest.Core/Shapes/CircleShape.cs

@@ -7,6 +7,8 @@ namespace OpenNest.Shapes
     {
         public double Diameter { get; set; }
 
+        public override string GenerateName() => $"Circle {Dim(Diameter)} Dia";
+
         public override void SetPreviewDefaults()
         {
             Diameter = 8;

OpenNest.Core/Shapes/IsoscelesTriangleShape.cs

@@ -8,6 +8,8 @@ namespace OpenNest.Shapes
         public double Base { get; set; }
         public double Height { get; set; }
 
+        public override string GenerateName() => $"Isosceles Triangle {Dim(Base)}x{Dim(Height)}";
+
         public override void SetPreviewDefaults()
         {
             Base = 8;

OpenNest.Core/Shapes/LShape.cs

@@ -10,6 +10,8 @@ namespace OpenNest.Shapes
         public double LegWidth { get; set; }
         public double LegHeight { get; set; }
 
+        public override string GenerateName() => $"L {Dim(Width)}x{Dim(Height)}";
+
         public override void SetPreviewDefaults()
         {
             Width = 8;

OpenNest.Core/Shapes/NgonShape.cs

@@ -8,6 +8,8 @@ namespace OpenNest.Shapes
         public int Sides { get; set; }
         public double Width { get; set; }
 
+        public override string GenerateName() => $"{Sides}-Sided Polygon {Dim(Width)}";
+
         public override void SetPreviewDefaults()
         {
             Sides = 8;

OpenNest.Core/Shapes/PipeFlangeShape.cs

@@ -13,6 +13,14 @@ namespace OpenNest.Shapes
         public double PipeClearance { get; set; }
         public bool Blind { get; set; }
 
+        public override string GenerateName()
+        {
+            var name = $"Pipe Flange {Dim(OD)} OD";
+            if (!string.IsNullOrEmpty(PipeSize))
+                name += $" {PipeSize} Pipe";
+            return name;
+        }
+
         public override void SetPreviewDefaults()
         {
             OD = 7.5;

OpenNest.Core/Shapes/RectangleShape.cs

@@ -8,6 +8,8 @@ namespace OpenNest.Shapes
         public double Length { get; set; }
         public double Width { get; set; }
 
+        public override string GenerateName() => $"Rectangle {Dim(Length)}x{Dim(Width)}";
+
         public override void SetPreviewDefaults()
         {
             Length = 12;

OpenNest.Core/Shapes/RightTriangleShape.cs

@@ -8,6 +8,8 @@ namespace OpenNest.Shapes
         public double Width { get; set; }
         public double Height { get; set; }
 
+        public override string GenerateName() => $"Right Triangle {Dim(Width)}x{Dim(Height)}";
+
         public override void SetPreviewDefaults()
         {
             Width = 8;

OpenNest.Core/Shapes/RingShape.cs

@@ -8,6 +8,8 @@ namespace OpenNest.Shapes
         public double OuterDiameter { get; set; }
         public double InnerDiameter { get; set; }
 
+        public override string GenerateName() => $"Ring {Dim(OuterDiameter)}x{Dim(InnerDiameter)}";
+
         public override void SetPreviewDefaults()
         {
             OuterDiameter = 10;

OpenNest.Core/Shapes/RoundedRectangleShape.cs

@@ -10,6 +10,8 @@ namespace OpenNest.Shapes
         public double Width { get; set; }
         public double Radius { get; set; }
 
+        public override string GenerateName() => $"Rounded Rectangle {Dim(Length)}x{Dim(Width)} R{Dim(Radius)}";
+
         public override void SetPreviewDefaults()
         {
             Length = 12;

OpenNest.Core/Shapes/ShapeDefinition.cs

@@ -26,6 +26,14 @@ namespace OpenNest.Shapes
 
         public abstract Drawing GetDrawing();
 
+        public virtual string GenerateName()
+        {
+            var typeName = GetType().Name;
+            return typeName.EndsWith("Shape")
+                ? typeName.Substring(0, typeName.Length - 5)
+                : typeName;
+        }
+
         public virtual void SetPreviewDefaults() { }
 
         public static List<T> LoadFromJson<T>(string path) where T : ShapeDefinition
@@ -34,6 +42,8 @@ namespace OpenNest.Shapes
             return JsonSerializer.Deserialize<List<T>>(json, JsonOptions);
         }
 
+        protected static string Dim(double value) => value.ToString("0.###");
+
         protected Drawing CreateDrawing(List<Entity> entities)
         {
             var pgm = ConvertGeometry.ToProgram(entities);

OpenNest.Core/Shapes/TShape.cs

@@ -10,6 +10,8 @@ namespace OpenNest.Shapes
         public double StemWidth { get; set; }
         public double BarHeight { get; set; }
 
+        public override string GenerateName() => $"T {Dim(Width)}x{Dim(Height)}";
+
         public override void SetPreviewDefaults()
         {
             Width = 10;

OpenNest.Core/Shapes/TrapezoidShape.cs

@@ -9,6 +9,8 @@ namespace OpenNest.Shapes
         public double BottomWidth { get; set; }
         public double Height { get; set; }
 
+        public override string GenerateName() => $"Trapezoid {Dim(TopWidth)}x{Dim(BottomWidth)}x{Dim(Height)}";
+
         public override void SetPreviewDefaults()
         {
             TopWidth = 6;

OpenNest/Controls/CuttingPanel.cs

@@ -24,6 +24,8 @@ namespace OpenNest.Controls
 
         private readonly CheckBox chkTabsEnabled;
         private readonly NumericUpDown nudTabWidth;
+        private readonly RadioButton rbTabAll;
+        private readonly RadioButton rbAutoTab;
         private readonly NumericUpDown nudAutoTabMin;
         private readonly NumericUpDown nudAutoTabMax;
         private readonly NumericUpDown nudPierceClearance;
@@ -112,7 +114,7 @@ namespace OpenNest.Controls
             {
                 HeaderText = "Tabs",
                 Dock = DockStyle.Top,
-                ExpandedHeight = 120,
+                ExpandedHeight = 160,
                 IsExpanded = false
             };
 
@@ -122,44 +124,78 @@ namespace OpenNest.Controls
                 Location = new Point(12, 4),
                 AutoSize = true
             };
-            chkTabsEnabled.CheckedChanged += (s, e) =>
-            {
-                nudTabWidth.Enabled = chkTabsEnabled.Checked;
-                OnParametersChanged();
-            };
             tabsPanel.ContentPanel.Controls.Add(chkTabsEnabled);
 
             tabsPanel.ContentPanel.Controls.Add(new Label
             {
-                Text = "Width:",
+                Text = "Tab Size:",
                 Location = new Point(160, 6),
                 AutoSize = true
             });
 
-            nudTabWidth = CreateNumeric(215, 3, 0.25, 0.0625);
+            nudTabWidth = CreateNumeric(225, 3, 0.25, 0.0625);
             nudTabWidth.Enabled = false;
             tabsPanel.ContentPanel.Controls.Add(nudTabWidth);
 
+            rbTabAll = new RadioButton
+            {
+                Text = "Tab all parts",
+                Location = new Point(28, 28),
+                AutoSize = true,
+                Enabled = false,
+                Checked = true
+            };
+            tabsPanel.ContentPanel.Controls.Add(rbTabAll);
+
+            rbAutoTab = new RadioButton
+            {
+                Text = "Auto-tab when smallest part dimension is between:",
+                Location = new Point(28, 50),
+                AutoSize = true,
+                Enabled = false
+            };
+            tabsPanel.ContentPanel.Controls.Add(rbAutoTab);
+
             tabsPanel.ContentPanel.Controls.Add(new Label
             {
-                Text = "Auto-Tab Min Size:",
+                Text = "Min:",
-                Location = new Point(12, 32),
+                Location = new Point(44, 76),
                 AutoSize = true
             });
 
-            nudAutoTabMin = CreateNumeric(140, 29, 0, 0.0625);
+            nudAutoTabMin = CreateNumeric(77, 73, 0, 0.0625);
+            nudAutoTabMin.Enabled = false;
             tabsPanel.ContentPanel.Controls.Add(nudAutoTabMin);
 
             tabsPanel.ContentPanel.Controls.Add(new Label
             {
-                Text = "Auto-Tab Max Size:",
+                Text = "Max:",
-                Location = new Point(12, 58),
+                Location = new Point(210, 76),
                 AutoSize = true
             });
 
-            nudAutoTabMax = CreateNumeric(140, 55, 0, 0.0625);
+            nudAutoTabMax = CreateNumeric(245, 73, 0, 0.0625);
+            nudAutoTabMax.Enabled = false;
             tabsPanel.ContentPanel.Controls.Add(nudAutoTabMax);
 
+            chkTabsEnabled.CheckedChanged += (s, e) =>
+            {
+                var enabled = chkTabsEnabled.Checked;
+                nudTabWidth.Enabled = enabled;
+                rbTabAll.Enabled = enabled;
+                rbAutoTab.Enabled = enabled;
+                nudAutoTabMin.Enabled = enabled && rbAutoTab.Checked;
+                nudAutoTabMax.Enabled = enabled && rbAutoTab.Checked;
+                OnParametersChanged();
+            };
+
+            rbTabAll.CheckedChanged += (s, e) =>
+            {
+                nudAutoTabMin.Enabled = chkTabsEnabled.Checked && rbAutoTab.Checked;
+                nudAutoTabMax.Enabled = chkTabsEnabled.Checked && rbAutoTab.Checked;
+                OnParametersChanged();
+            };
+
             // Pierce section
             var piercePanel = new CollapsiblePanel
             {
@@ -246,13 +282,13 @@ namespace OpenNest.Controls
                 InternalLeadOut = BuildLeadOut(cboInternalLeadOut, pnlInternalLeadOut),
                 ArcCircleLeadIn = BuildLeadIn(cboArcCircleLeadIn, pnlArcCircleLeadIn),
                 ArcCircleLeadOut = BuildLeadOut(cboArcCircleLeadOut, pnlArcCircleLeadOut),
-                TabsEnabled = chkTabsEnabled.Checked,
+                TabsEnabled = chkTabsEnabled.Checked && rbTabAll.Checked,
                 TabConfig = new NormalTab { Size = (double)nudTabWidth.Value },
                 PierceClearance = (double)nudPierceClearance.Value,
                 RoundLeadInAngles = chkRoundLeadInAngles.Checked,
                 LeadInAngleIncrement = (double)nudLeadInAngleIncrement.Value,
-                AutoTabMinSize = (double)nudAutoTabMin.Value,
+                AutoTabMinSize = chkTabsEnabled.Checked && rbAutoTab.Checked ? (double)nudAutoTabMin.Value : 0,
-                AutoTabMaxSize = (double)nudAutoTabMax.Value
+                AutoTabMaxSize = chkTabsEnabled.Checked && rbAutoTab.Checked ? (double)nudAutoTabMax.Value : 0
             };
         }
 
@@ -267,7 +303,10 @@ namespace OpenNest.Controls
             LoadLeadIn(cboArcCircleLeadIn, pnlArcCircleLeadIn, p.ArcCircleLeadIn);
             LoadLeadOut(cboArcCircleLeadOut, pnlArcCircleLeadOut, p.ArcCircleLeadOut);
 
-            chkTabsEnabled.Checked = p.TabsEnabled;
+            var hasAutoTab = p.AutoTabMinSize > 0 || p.AutoTabMaxSize > 0;
+            chkTabsEnabled.Checked = p.TabsEnabled || hasAutoTab;
+            rbAutoTab.Checked = hasAutoTab;
+            rbTabAll.Checked = !hasAutoTab;
             if (p.TabConfig != null)
                 nudTabWidth.Value = (decimal)p.TabConfig.Size;
             nudPierceClearance.Value = (decimal)p.PierceClearance;

OpenNest/Forms/EditNestForm.Designer.cs

@@ -47,11 +47,9 @@
             drawingListBox1 = new OpenNest.Controls.DrawingListBox();
             toolStrip2 = new System.Windows.Forms.ToolStrip();
             toolStripButton2 = new System.Windows.Forms.ToolStripButton();
-            toolStripSeparator4 = new System.Windows.Forms.ToolStripSeparator();
+            shapeLibraryButton = new System.Windows.Forms.ToolStripButton();
             editDrawingsButton = new System.Windows.Forms.ToolStripButton();
-            toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator();
             toolStripButton3 = new System.Windows.Forms.ToolStripButton();
-            toolStripSeparator2 = new System.Windows.Forms.ToolStripSeparator();
             hideNestedButton = new System.Windows.Forms.ToolStripButton();
             ((System.ComponentModel.ISupportInitialize)splitContainer).BeginInit();
             splitContainer.Panel1.SuspendLayout();
@@ -219,7 +217,7 @@
             // 
             toolStrip2.GripStyle = System.Windows.Forms.ToolStripGripStyle.Hidden;
             toolStrip2.ImageScalingSize = new System.Drawing.Size(20, 20);
-            toolStrip2.Items.AddRange(new System.Windows.Forms.ToolStripItem[] { toolStripButton2, toolStripSeparator4, editDrawingsButton, toolStripSeparator1, toolStripButton3, toolStripSeparator2, hideNestedButton });
+            toolStrip2.Items.AddRange(new System.Windows.Forms.ToolStripItem[] { toolStripButton2, shapeLibraryButton, editDrawingsButton, toolStripButton3, hideNestedButton });
             toolStrip2.Location = new System.Drawing.Point(4, 3);
             toolStrip2.Name = "toolStrip2";
             toolStrip2.Size = new System.Drawing.Size(265, 27);
@@ -238,10 +236,15 @@
             toolStripButton2.Text = "Import Drawings";
             toolStripButton2.Click += ImportDrawings_Click;
             //
-            // toolStripSeparator4
+            // shapeLibraryButton
             //
-            toolStripSeparator4.Name = "toolStripSeparator4";
+            shapeLibraryButton.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
-            toolStripSeparator4.Size = new System.Drawing.Size(6, 27);
+            shapeLibraryButton.Image = Properties.Resources.shapes;
+            shapeLibraryButton.Name = "shapeLibraryButton";
+            shapeLibraryButton.Padding = new System.Windows.Forms.Padding(5, 0, 5, 0);
+            shapeLibraryButton.Size = new System.Drawing.Size(34, 24);
+            shapeLibraryButton.Text = "Shape Library";
+            shapeLibraryButton.Click += ShapeLibrary_Click;
             //
             // editDrawingsButton
             //
@@ -253,11 +256,6 @@
             editDrawingsButton.Text = "Edit Drawings in Converter";
             editDrawingsButton.Click += EditDrawingsInConverter_Click;
             //
-            // toolStripSeparator1
-            // 
-            toolStripSeparator1.Name = "toolStripSeparator1";
-            toolStripSeparator1.Size = new System.Drawing.Size(6, 27);
-            // 
             // toolStripButton3
             //
             toolStripButton3.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
@@ -269,11 +267,6 @@
             toolStripButton3.Text = "Cleanup unused Drawings";
             toolStripButton3.Click += CleanUnusedDrawings_Click;
             //
-            // toolStripSeparator2
-            // 
-            toolStripSeparator2.Name = "toolStripSeparator2";
-            toolStripSeparator2.Size = new System.Drawing.Size(6, 27);
-            // 
             // hideNestedButton
             // 
             hideNestedButton.CheckOnClick = true;
@@ -329,11 +322,9 @@
         private System.Windows.Forms.ColumnHeader utilColumn;
         private System.Windows.Forms.ToolStrip toolStrip2;
         private System.Windows.Forms.ToolStripButton toolStripButton2;
-        private System.Windows.Forms.ToolStripSeparator toolStripSeparator4;
+        private System.Windows.Forms.ToolStripButton shapeLibraryButton;
         private System.Windows.Forms.ToolStripButton editDrawingsButton;
-        private System.Windows.Forms.ToolStripSeparator toolStripSeparator1;
         private System.Windows.Forms.ToolStripButton toolStripButton3;
-        private System.Windows.Forms.ToolStripSeparator toolStripSeparator2;
         private System.Windows.Forms.ToolStripButton hideNestedButton;
         private System.Windows.Forms.ToolStripSeparator toolStripSeparator3;
         private System.Windows.Forms.ToolStripButton toolStripLabel1;

OpenNest/Forms/EditNestForm.cs

@@ -875,6 +875,18 @@ namespace OpenNest.Forms
             Import();
         }
 
+        private void ShapeLibrary_Click(object sender, EventArgs e)
+        {
+            var form = new ShapeLibraryForm(Nest.Drawings.Select(d => d.Name));
+            form.ShowDialog();
+
+            var drawings = form.GetDrawings();
+            if (drawings.Count == 0) return;
+
+            drawings.ForEach(d => Nest.Drawings.Add(d));
+            UpdateDrawingList();
+        }
+
         private void EditDrawingsInConverter_Click(object sender, EventArgs e)
         {
             if (Nest.Drawings.Count == 0)

OpenNest/Forms/MainForm.cs

@@ -837,7 +837,7 @@ namespace OpenNest.Forms
         {
             if (activeForm == null) return;
 
-            var form = new ShapeLibraryForm();
+            var form = new ShapeLibraryForm(activeForm.Nest.Drawings.Select(d => d.Name));
             form.ShowDialog();
 
             var drawings = form.GetDrawings();

OpenNest/Forms/ShapeLibraryForm.cs

@@ -21,12 +21,17 @@ namespace OpenNest.Forms
         private readonly List<Drawing> addedDrawings = new List<Drawing>();
         private readonly List<ShapeEntry> shapeEntries = new List<ShapeEntry>();
         private readonly List<ParameterBinding> parameterBindings = new List<ParameterBinding>();
+        private readonly HashSet<string> existingNames;
 
         private ShapeEntry selectedEntry;
         private bool suppressPreview;
 
-        public ShapeLibraryForm()
+        public ShapeLibraryForm(IEnumerable<string> existingDrawingNames = null)
         {
+            existingNames = existingDrawingNames != null
+                ? new HashSet<string>(existingDrawingNames, StringComparer.OrdinalIgnoreCase)
+                : new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+
             InitializeComponent();
             DiscoverShapes();
             PopulateShapeList();
@@ -259,6 +264,7 @@ namespace OpenNest.Forms
                 if (shape == null) return;
 
                 var drawing = shape.GetDrawing();
+                nameTextBox.Text = shape.GenerateName();
                 previewBox.ShowDrawing(drawing);
 
                 if (drawing?.Program != null)
@@ -405,10 +411,12 @@ namespace OpenNest.Forms
                 if (shape == null) return;
 
                 var drawing = shape.GetDrawing();
+                drawing.Name = GetUniqueName(drawing.Name);
                 drawing.Color = Drawing.GetNextColor();
                 drawing.Quantity.Required = (int)quantityUpDown.Value;
 
                 addedDrawings.Add(drawing);
+                existingNames.Add(drawing.Name);
                 DialogResult = DialogResult.OK;
 
                 addButton.Text = $"Added ({addedDrawings.Count})";
@@ -423,6 +431,19 @@ namespace OpenNest.Forms
             }
         }
 
+        private string GetUniqueName(string baseName)
+        {
+            if (!existingNames.Contains(baseName))
+                return baseName;
+
+            for (var i = 2; ; i++)
+            {
+                var candidate = $"{baseName} ({i})";
+                if (!existingNames.Contains(candidate))
+                    return candidate;
+            }
+        }
+
         private static string FriendlyName(string name)
         {
             if (name.EndsWith("Shape"))

OpenNest/Properties/Resources.Designer.cs

@@ -250,6 +250,16 @@ namespace OpenNest.Properties {
             }
         }
 
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap shapes {
+            get {
+                object obj = ResourceManager.GetObject("shapes", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>

OpenNest/Properties/Resources.resx

@@ -187,4 +187,7 @@
   <data name="delete" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\delete.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="shapes" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\shapes.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
 </root>