docs: add pattern tile layout implementation plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-18 09:31:27 -04:00
parent 207cef5423
commit 285e7082fb

View File

@@ -0,0 +1,877 @@
# Pattern Tile Layout Window Implementation Plan
> **For agentic workers:** REQUIRED: Use superpowers:subagent-driven-development (if subagents available) or superpowers:executing-plans to implement this plan. Steps use checkbox (`- [ ]`) syntax for tracking.
**Goal:** Build a tool window where the user selects two drawings, arranges them as a unit cell, and tiles the pattern across a configurable plate with an option to apply the result.
**Architecture:** A `PatternTileForm` dialog with a horizontal `SplitContainer` — left panel is a `PlateView` for unit cell editing (plate outline hidden via zero-size plate), right panel is a read-only `PlateView` for tile preview. A `PatternTiler` helper in Engine handles the tiling math (deliberate addition beyond the spec for separation of concerns — the spec says "no engine changes" but the tiler is pure logic with no side-effects). The form is opened from the Tools menu and returns a result to `EditNestForm` for placement.
**Tech Stack:** WinForms (.NET 8), existing `PlateView`/`DrawControl` controls, `Compactor.Push` (angle-based overload), `Part.CloneAtOffset`
**Spec:** `docs/superpowers/specs/2026-03-18-pattern-tile-layout-design.md`
---
### Task 1: PatternTiler — tiling algorithm in Engine
The pure logic component that takes a unit cell (list of parts) and tiles it across a plate work area. No UI dependency.
**Files:**
- Create: `OpenNest.Engine/PatternTiler.cs`
- Test: `OpenNest.Tests/PatternTilerTests.cs`
- [ ] **Step 1: Write failing tests for PatternTiler**
```csharp
// OpenNest.Tests/PatternTilerTests.cs
using OpenNest;
using OpenNest.Engine;
using OpenNest.Geometry;
namespace OpenNest.Tests;
public class PatternTilerTests
{
private static Drawing MakeSquareDrawing(double size)
{
var pgm = new CNC.Program();
pgm.Add(new CNC.LinearMove(size, 0));
pgm.Add(new CNC.LinearMove(size, size));
pgm.Add(new CNC.LinearMove(0, size));
pgm.Add(new CNC.LinearMove(0, 0));
return new Drawing("square", pgm);
}
[Fact]
public void Tile_SinglePart_FillsGrid()
{
var drawing = MakeSquareDrawing(10);
var cell = new List<Part> { Part.CreateAtOrigin(drawing) };
// Size(width=X, length=Y) — 30 wide, 20 tall
var plateSize = new Size(30, 20);
var partSpacing = 0.0;
var result = PatternTiler.Tile(cell, plateSize, partSpacing);
// 3 columns (30/10) x 2 rows (20/10) = 6 parts
Assert.Equal(6, result.Count);
// Verify all parts are within plate bounds
foreach (var part in result)
{
Assert.True(part.BoundingBox.Right <= plateSize.Width + 0.001);
Assert.True(part.BoundingBox.Top <= plateSize.Length + 0.001);
Assert.True(part.BoundingBox.Left >= -0.001);
Assert.True(part.BoundingBox.Bottom >= -0.001);
}
}
[Fact]
public void Tile_TwoParts_TilesUnitCell()
{
var drawing = MakeSquareDrawing(10);
var partA = Part.CreateAtOrigin(drawing);
var partB = Part.CreateAtOrigin(drawing);
partB.Offset(10, 0); // side by side, cell = 20x10
var cell = new List<Part> { partA, partB };
var plateSize = new Size(40, 20);
var partSpacing = 0.0;
var result = PatternTiler.Tile(cell, plateSize, partSpacing);
// 2 columns (40/20) x 2 rows (20/10) = 4 cells x 2 parts = 8
Assert.Equal(8, result.Count);
}
[Fact]
public void Tile_WithSpacing_ReducesCount()
{
var drawing = MakeSquareDrawing(10);
var cell = new List<Part> { Part.CreateAtOrigin(drawing) };
var plateSize = new Size(30, 20);
var partSpacing = 2.0;
var result = PatternTiler.Tile(cell, plateSize, partSpacing);
// cell width = 10 + 2 = 12, cols = floor(30/12) = 2
// cell height = 10 + 2 = 12, rows = floor(20/12) = 1
// 2 x 1 = 2 parts
Assert.Equal(2, result.Count);
}
[Fact]
public void Tile_EmptyCell_ReturnsEmpty()
{
var result = PatternTiler.Tile(new List<Part>(), new Size(100, 100), 0);
Assert.Empty(result);
}
[Fact]
public void Tile_NonSquarePlate_CorrectAxes()
{
var drawing = MakeSquareDrawing(10);
var cell = new List<Part> { Part.CreateAtOrigin(drawing) };
// Wide plate: 50 in X (Width), 10 in Y (Length) — should fit 5x1
var plateSize = new Size(50, 10);
var result = PatternTiler.Tile(cell, plateSize, 0);
Assert.Equal(5, result.Count);
// Verify parts span the X axis, not Y
var maxRight = result.Max(p => p.BoundingBox.Right);
var maxTop = result.Max(p => p.BoundingBox.Top);
Assert.True(maxRight <= 50.001);
Assert.True(maxTop <= 10.001);
}
[Fact]
public void Tile_CellLargerThanPlate_ReturnsSingleCell()
{
var drawing = MakeSquareDrawing(50);
var cell = new List<Part> { Part.CreateAtOrigin(drawing) };
var plateSize = new Size(30, 30);
var result = PatternTiler.Tile(cell, plateSize, 0);
// Cell doesn't fit at all — 0 parts
Assert.Empty(result);
}
}
```
- [ ] **Step 2: Run tests to verify they fail**
Run: `dotnet test OpenNest.Tests --filter "FullyQualifiedName~PatternTilerTests" -v n`
Expected: Build error — `PatternTiler` does not exist.
- [ ] **Step 3: Implement PatternTiler**
```csharp
// OpenNest.Engine/PatternTiler.cs
using System;
using System.Collections.Generic;
using System.Linq;
using OpenNest.Geometry;
namespace OpenNest.Engine
{
public static class PatternTiler
{
/// <summary>
/// Tiles a unit cell across a plate, returning cloned parts.
/// </summary>
/// <param name="cell">The unit cell parts (positioned relative to each other).</param>
/// <param name="plateSize">The plate size to tile across.</param>
/// <param name="partSpacing">Spacing to add around each cell.</param>
/// <returns>List of cloned parts filling the plate.</returns>
public static List<Part> Tile(List<Part> cell, Size plateSize, double partSpacing)
{
if (cell == null || cell.Count == 0)
return new List<Part>();
var cellBox = cell.GetBoundingBox();
var halfSpacing = partSpacing / 2;
var cellWidth = cellBox.Width + partSpacing;
var cellHeight = cellBox.Length + partSpacing;
if (cellWidth <= 0 || cellHeight <= 0)
return new List<Part>();
// Size.Width = X-axis, Size.Length = Y-axis
var cols = (int)System.Math.Floor(plateSize.Width / cellWidth);
var rows = (int)System.Math.Floor(plateSize.Length / cellHeight);
if (cols <= 0 || rows <= 0)
return new List<Part>();
// Offset to normalize cell origin to (halfSpacing, halfSpacing)
var cellOrigin = cellBox.Location;
var baseOffset = new Vector(halfSpacing - cellOrigin.X, halfSpacing - cellOrigin.Y);
var result = new List<Part>(cols * rows * cell.Count);
for (var row = 0; row < rows; row++)
{
for (var col = 0; col < cols; col++)
{
var tileOffset = baseOffset + new Vector(col * cellWidth, row * cellHeight);
foreach (var part in cell)
{
result.Add(part.CloneAtOffset(tileOffset));
}
}
}
return result;
}
}
}
```
- [ ] **Step 4: Run tests to verify they pass**
Run: `dotnet test OpenNest.Tests --filter "FullyQualifiedName~PatternTilerTests" -v n`
Expected: All 6 tests PASS.
- [ ] **Step 5: Commit**
```bash
git add OpenNest.Engine/PatternTiler.cs OpenNest.Tests/PatternTilerTests.cs
git commit -m "feat(engine): add PatternTiler for unit cell tiling across plates"
```
---
### Task 2: PatternTileForm — the dialog window
The WinForms dialog with split layout, drawing pickers, plate size controls, and the two `PlateView` panels. This task builds the form shell and layout — interaction logic comes in Task 3.
**Files:**
- Create: `OpenNest/Forms/PatternTileForm.cs`
- Create: `OpenNest/Forms/PatternTileForm.Designer.cs`
**Key reference files:**
- `OpenNest/Forms/BestFitViewerForm.cs` — similar standalone tool form pattern
- `OpenNest/Controls/PlateView.cs` — the control used in both panels
- `OpenNest/Forms/EditPlateForm.cs` — plate size input pattern
- [ ] **Step 1: Create PatternTileForm.Designer.cs**
```csharp
// OpenNest/Forms/PatternTileForm.Designer.cs
namespace OpenNest.Forms
{
partial class PatternTileForm
{
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
components.Dispose();
base.Dispose(disposing);
}
private void InitializeComponent()
{
this.topPanel = new System.Windows.Forms.FlowLayoutPanel();
this.lblDrawingA = new System.Windows.Forms.Label();
this.cboDrawingA = new System.Windows.Forms.ComboBox();
this.lblDrawingB = new System.Windows.Forms.Label();
this.cboDrawingB = new System.Windows.Forms.ComboBox();
this.lblPlateSize = new System.Windows.Forms.Label();
this.txtPlateSize = new System.Windows.Forms.TextBox();
this.lblPartSpacing = new System.Windows.Forms.Label();
this.nudPartSpacing = new System.Windows.Forms.NumericUpDown();
this.btnAutoArrange = new System.Windows.Forms.Button();
this.btnApply = new System.Windows.Forms.Button();
this.splitContainer = new System.Windows.Forms.SplitContainer();
this.topPanel.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.nudPartSpacing)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.splitContainer)).BeginInit();
this.splitContainer.SuspendLayout();
this.SuspendLayout();
//
// topPanel — FlowLayoutPanel for correct left-to-right ordering
//
this.topPanel.Controls.Add(this.lblDrawingA);
this.topPanel.Controls.Add(this.cboDrawingA);
this.topPanel.Controls.Add(this.lblDrawingB);
this.topPanel.Controls.Add(this.cboDrawingB);
this.topPanel.Controls.Add(this.lblPlateSize);
this.topPanel.Controls.Add(this.txtPlateSize);
this.topPanel.Controls.Add(this.lblPartSpacing);
this.topPanel.Controls.Add(this.nudPartSpacing);
this.topPanel.Controls.Add(this.btnAutoArrange);
this.topPanel.Controls.Add(this.btnApply);
this.topPanel.Dock = System.Windows.Forms.DockStyle.Top;
this.topPanel.Height = 36;
this.topPanel.Padding = new System.Windows.Forms.Padding(4, 4, 4, 4);
this.topPanel.WrapContents = false;
//
// lblDrawingA
//
this.lblDrawingA.Text = "Drawing A:";
this.lblDrawingA.AutoSize = true;
this.lblDrawingA.Margin = new System.Windows.Forms.Padding(3, 5, 0, 0);
//
// cboDrawingA
//
this.cboDrawingA.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboDrawingA.Width = 130;
//
// lblDrawingB
//
this.lblDrawingB.Text = "Drawing B:";
this.lblDrawingB.AutoSize = true;
this.lblDrawingB.Margin = new System.Windows.Forms.Padding(10, 5, 0, 0);
//
// cboDrawingB
//
this.cboDrawingB.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboDrawingB.Width = 130;
//
// lblPlateSize
//
this.lblPlateSize.Text = "Plate Size:";
this.lblPlateSize.AutoSize = true;
this.lblPlateSize.Margin = new System.Windows.Forms.Padding(10, 5, 0, 0);
//
// txtPlateSize
//
this.txtPlateSize.Width = 80;
//
// lblPartSpacing
//
this.lblPartSpacing.Text = "Spacing:";
this.lblPartSpacing.AutoSize = true;
this.lblPartSpacing.Margin = new System.Windows.Forms.Padding(10, 5, 0, 0);
//
// nudPartSpacing
//
this.nudPartSpacing.Width = 60;
this.nudPartSpacing.DecimalPlaces = 2;
this.nudPartSpacing.Increment = 0.25m;
this.nudPartSpacing.Maximum = 100;
this.nudPartSpacing.Minimum = 0;
//
// btnAutoArrange
//
this.btnAutoArrange.Text = "Auto-Arrange";
this.btnAutoArrange.Width = 100;
this.btnAutoArrange.Margin = new System.Windows.Forms.Padding(10, 0, 0, 0);
//
// btnApply
//
this.btnApply.Text = "Apply...";
this.btnApply.Width = 80;
//
// splitContainer
//
this.splitContainer.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer.SplitterDistance = 350;
//
// PatternTileForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(900, 550);
this.Controls.Add(this.splitContainer);
this.Controls.Add(this.topPanel);
this.MinimumSize = new System.Drawing.Size(700, 400);
this.Name = "PatternTileForm";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
this.Text = "Pattern Tile Layout";
this.topPanel.ResumeLayout(false);
this.topPanel.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.nudPartSpacing)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.splitContainer)).EndInit();
this.splitContainer.ResumeLayout(false);
this.ResumeLayout(false);
}
private System.Windows.Forms.FlowLayoutPanel topPanel;
private System.Windows.Forms.Label lblDrawingA;
private System.Windows.Forms.ComboBox cboDrawingA;
private System.Windows.Forms.Label lblDrawingB;
private System.Windows.Forms.ComboBox cboDrawingB;
private System.Windows.Forms.Label lblPlateSize;
private System.Windows.Forms.TextBox txtPlateSize;
private System.Windows.Forms.Label lblPartSpacing;
private System.Windows.Forms.NumericUpDown nudPartSpacing;
private System.Windows.Forms.Button btnAutoArrange;
private System.Windows.Forms.Button btnApply;
private System.Windows.Forms.SplitContainer splitContainer;
}
}
```
- [ ] **Step 2: Create PatternTileForm.cs — form shell with PlateViews**
```csharp
// OpenNest/Forms/PatternTileForm.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using OpenNest.Controls;
using OpenNest.Geometry;
namespace OpenNest.Forms
{
public enum PatternTileTarget
{
CurrentPlate,
NewPlate
}
public class PatternTileResult
{
public List<Part> Parts { get; set; }
public PatternTileTarget Target { get; set; }
public Size PlateSize { get; set; }
}
public partial class PatternTileForm : Form
{
private readonly Nest nest;
private readonly PlateView cellView;
private readonly PlateView previewView;
public PatternTileResult Result { get; private set; }
public PatternTileForm(Nest nest)
{
this.nest = nest;
InitializeComponent();
// Unit cell editor — plate outline hidden via zero-size plate
cellView = new PlateView();
cellView.Plate.Size = new Size(0, 0);
cellView.Plate.Quantity = 0; // prevent Drawing.Quantity.Nested side-effects
cellView.DrawOrigin = false;
cellView.DrawBounds = false; // hide selection bounding box overlay
cellView.Dock = DockStyle.Fill;
splitContainer.Panel1.Controls.Add(cellView);
// Tile preview — plate visible, read-only
previewView = new PlateView();
previewView.Plate.Quantity = 0; // prevent Drawing.Quantity.Nested side-effects
previewView.AllowSelect = false;
previewView.AllowDrop = false;
previewView.DrawBounds = false;
previewView.Dock = DockStyle.Fill;
splitContainer.Panel2.Controls.Add(previewView);
// Populate drawing dropdowns
var drawings = nest.Drawings.OrderBy(d => d.Name).ToList();
cboDrawingA.Items.Add("(none)");
cboDrawingB.Items.Add("(none)");
foreach (var d in drawings)
{
cboDrawingA.Items.Add(d);
cboDrawingB.Items.Add(d);
}
cboDrawingA.SelectedIndex = 0;
cboDrawingB.SelectedIndex = 0;
// Default plate size from nest defaults
var defaults = nest.PlateDefaults;
txtPlateSize.Text = defaults.Size.ToString();
nudPartSpacing.Value = (decimal)defaults.PartSpacing;
// Wire events
cboDrawingA.SelectedIndexChanged += OnDrawingChanged;
cboDrawingB.SelectedIndexChanged += OnDrawingChanged;
txtPlateSize.TextChanged += OnPlateSettingsChanged;
nudPartSpacing.ValueChanged += OnPlateSettingsChanged;
btnAutoArrange.Click += OnAutoArrangeClick;
btnApply.Click += OnApplyClick;
cellView.MouseUp += OnCellMouseUp;
}
private Drawing SelectedDrawingA =>
cboDrawingA.SelectedItem as Drawing;
private Drawing SelectedDrawingB =>
cboDrawingB.SelectedItem as Drawing;
private double PartSpacing =>
(double)nudPartSpacing.Value;
private bool TryGetPlateSize(out Size size)
{
return Size.TryParse(txtPlateSize.Text, out size);
}
private void OnDrawingChanged(object sender, EventArgs e)
{
RebuildCell();
RebuildPreview();
}
private void OnPlateSettingsChanged(object sender, EventArgs e)
{
UpdatePreviewPlateSize();
RebuildPreview();
}
private void OnCellMouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && cellView.Plate.Parts.Count == 2)
{
CompactCellParts();
}
RebuildPreview();
}
private void RebuildCell()
{
cellView.Plate.Parts.Clear();
var drawingA = SelectedDrawingA;
var drawingB = SelectedDrawingB;
if (drawingA == null && drawingB == null)
return;
if (drawingA != null)
{
var partA = Part.CreateAtOrigin(drawingA);
cellView.Plate.Parts.Add(partA);
}
if (drawingB != null)
{
var partB = Part.CreateAtOrigin(drawingB);
// Place B to the right of A (or at origin if A is null)
if (drawingA != null && cellView.Plate.Parts.Count > 0)
{
var aBox = cellView.Plate.Parts[0].BoundingBox;
partB.Offset(aBox.Right + PartSpacing, 0);
}
cellView.Plate.Parts.Add(partB);
}
cellView.ZoomToFit();
}
private void CompactCellParts()
{
var parts = cellView.Plate.Parts.ToList();
if (parts.Count < 2)
return;
var combinedBox = parts.GetBoundingBox();
var centroid = combinedBox.Center;
var syntheticWorkArea = new Box(-10000, -10000, 20000, 20000);
for (var iteration = 0; iteration < 10; iteration++)
{
var totalMoved = 0.0;
foreach (var part in parts)
{
var partCenter = part.BoundingBox.Center;
var dx = centroid.X - partCenter.X;
var dy = centroid.Y - partCenter.Y;
var dist = System.Math.Sqrt(dx * dx + dy * dy);
if (dist < 0.01)
continue;
var angle = System.Math.Atan2(dy, dx);
var single = new List<Part> { part };
var obstacles = parts.Where(p => p != part).ToList();
totalMoved += Compactor.Push(single, obstacles,
syntheticWorkArea, PartSpacing, angle);
}
if (totalMoved < 0.01)
break;
}
cellView.Refresh();
}
private void UpdatePreviewPlateSize()
{
if (TryGetPlateSize(out var size))
previewView.Plate.Size = size;
}
private void RebuildPreview()
{
previewView.Plate.Parts.Clear();
if (!TryGetPlateSize(out var plateSize))
return;
previewView.Plate.Size = plateSize;
previewView.Plate.PartSpacing = PartSpacing;
var cellParts = cellView.Plate.Parts.ToList();
if (cellParts.Count == 0)
return;
var tiled = Engine.PatternTiler.Tile(cellParts, plateSize, PartSpacing);
foreach (var part in tiled)
previewView.Plate.Parts.Add(part);
previewView.ZoomToFit();
}
private void OnAutoArrangeClick(object sender, EventArgs e)
{
var drawingA = SelectedDrawingA;
var drawingB = SelectedDrawingB;
if (drawingA == null || drawingB == null)
return;
if (!TryGetPlateSize(out var plateSize))
return;
Cursor = Cursors.WaitCursor;
try
{
var angles = new[] { 0.0, Math.Angle.ToRadians(90), Math.Angle.ToRadians(180), Math.Angle.ToRadians(270) };
var bestCell = (List<Part>)null;
var bestArea = double.MaxValue;
foreach (var angleA in angles)
{
foreach (var angleB in angles)
{
var partA = Part.CreateAtOrigin(drawingA, angleA);
var partB = Part.CreateAtOrigin(drawingB, angleB);
partB.Offset(partA.BoundingBox.Right + PartSpacing, 0);
var cell = new List<Part> { partA, partB };
// Compact toward center
var box = cell.GetBoundingBox();
var centroid = box.Center;
var syntheticWorkArea = new Box(-10000, -10000, 20000, 20000);
for (var i = 0; i < 10; i++)
{
var moved = 0.0;
foreach (var part in cell)
{
var pc = part.BoundingBox.Center;
var dx = centroid.X - pc.X;
var dy = centroid.Y - pc.Y;
if (System.Math.Sqrt(dx * dx + dy * dy) < 0.01)
continue;
var angle = System.Math.Atan2(dy, dx);
var single = new List<Part> { part };
var obstacles = cell.Where(p => p != part).ToList();
moved += Compactor.Push(single, obstacles, syntheticWorkArea, PartSpacing, angle);
}
if (moved < 0.01) break;
}
var finalBox = cell.GetBoundingBox();
var area = finalBox.Width * finalBox.Length;
if (area < bestArea)
{
bestArea = area;
bestCell = cell;
}
}
}
if (bestCell != null)
{
cellView.Plate.Parts.Clear();
foreach (var part in bestCell)
cellView.Plate.Parts.Add(part);
cellView.ZoomToFit();
RebuildPreview();
}
}
finally
{
Cursor = Cursors.Default;
}
}
private void OnApplyClick(object sender, EventArgs e)
{
if (previewView.Plate.Parts.Count == 0)
return;
if (!TryGetPlateSize(out var plateSize))
return;
var choice = MessageBox.Show(
"Apply pattern to current plate?\n\nYes = Current plate (clears existing parts)\nNo = New plate",
"Apply Pattern",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question);
if (choice == DialogResult.Cancel)
return;
// Rebuild a fresh set of tiled parts for the caller
var cellParts = cellView.Plate.Parts.ToList();
var tiledParts = Engine.PatternTiler.Tile(cellParts, plateSize, PartSpacing);
Result = new PatternTileResult
{
Parts = tiledParts,
Target = choice == DialogResult.Yes
? PatternTileTarget.CurrentPlate
: PatternTileTarget.NewPlate,
PlateSize = plateSize
};
DialogResult = DialogResult.OK;
Close();
}
}
}
```
- [ ] **Step 3: Build to verify compilation**
Run: `dotnet build OpenNest.sln`
Expected: Build succeeds with no errors.
- [ ] **Step 4: Commit**
```bash
git add OpenNest/Forms/PatternTileForm.cs OpenNest/Forms/PatternTileForm.Designer.cs
git commit -m "feat(ui): add PatternTileForm dialog with unit cell editor and tile preview"
```
---
### Task 3: Wire up menu entry and apply logic in MainForm
Add a "Pattern Tile" menu item under Tools, wire it to open `PatternTileForm`, and handle the result by placing parts on the target plate.
**Files:**
- Modify: `OpenNest/Forms/MainForm.Designer.cs` — add menu item
- Modify: `OpenNest/Forms/MainForm.cs` — add click handler and apply logic
- [ ] **Step 1: Add menu item to MainForm.Designer.cs**
In the `InitializeComponent` method:
1. Add field declaration at end of class (near the other `mnuTools*` fields):
```csharp
private System.Windows.Forms.ToolStripMenuItem mnuToolsPatternTile;
```
2. In `InitializeComponent`, add initialization (near the other `mnuTools*` instantiations):
```csharp
this.mnuToolsPatternTile = new System.Windows.Forms.ToolStripMenuItem();
```
3. Add to the `mnuTools.DropDownItems` array — insert `mnuToolsPatternTile` after `mnuToolsBestFitViewer`:
```csharp
mnuTools.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
mnuToolsMeasureArea, mnuToolsBestFitViewer, mnuToolsPatternTile, mnuToolsAlign,
toolStripMenuItem14, mnuSetOffsetIncrement, mnuSetRotationIncrement,
toolStripMenuItem15, mnuToolsOptions });
```
4. Add configuration block:
```csharp
// mnuToolsPatternTile
this.mnuToolsPatternTile.Name = "mnuToolsPatternTile";
this.mnuToolsPatternTile.Size = new System.Drawing.Size(214, 22);
this.mnuToolsPatternTile.Text = "Pattern Tile";
this.mnuToolsPatternTile.Click += PatternTile_Click;
```
- [ ] **Step 2: Add click handler and apply logic to MainForm.cs**
Add in the `#region Tools Menu Events` section, after `BestFitViewer_Click`:
```csharp
private void PatternTile_Click(object sender, EventArgs e)
{
if (activeForm == null)
return;
if (activeForm.Nest.Drawings.Count == 0)
{
MessageBox.Show("No drawings available.", "Pattern Tile",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
using (var form = new PatternTileForm(activeForm.Nest))
{
if (form.ShowDialog(this) != DialogResult.OK || form.Result == null)
return;
var result = form.Result;
if (result.Target == PatternTileTarget.CurrentPlate)
{
activeForm.PlateView.Plate.Parts.Clear();
foreach (var part in result.Parts)
activeForm.PlateView.Plate.Parts.Add(part);
activeForm.PlateView.ZoomToFit();
}
else
{
var plate = activeForm.Nest.CreatePlate();
plate.Size = result.PlateSize;
foreach (var part in result.Parts)
plate.Parts.Add(part);
activeForm.LoadLastPlate();
}
activeForm.Nest.UpdateDrawingQuantities();
}
}
```
- [ ] **Step 3: Build and manually test**
Run: `dotnet build OpenNest.sln`
Expected: Build succeeds. Launch the app, create a nest, import some DXFs, then Tools > Pattern Tile opens the form.
- [ ] **Step 4: Commit**
```bash
git add OpenNest/Forms/MainForm.cs OpenNest/Forms/MainForm.Designer.cs
git commit -m "feat(ui): wire Pattern Tile menu item and apply logic in MainForm"
```
---
### Task 4: Manual testing and polish
Final integration testing and any adjustments.
**Files:**
- Possibly modify: `OpenNest/Forms/PatternTileForm.cs`, `OpenNest/Forms/PatternTileForm.Designer.cs`
- [ ] **Step 1: End-to-end test workflow**
1. Launch the app, create a new nest
2. Import 2+ DXF drawings
3. Open Tools > Pattern Tile
4. Select Drawing A and Drawing B
5. Verify parts appear in left panel, can be dragged
6. Verify compaction on mouse release closes gaps
7. Verify tile preview updates on the right
8. Change plate size — verify preview updates
9. Change spacing — verify preview updates
10. Click Auto-Arrange — verify it picks a tight arrangement
11. Click Apply > Yes (current plate) — verify parts placed
12. Reopen, Apply > No (new plate) — verify new plate created with parts
13. Test single drawing only (one dropdown set, other on "(none)")
14. Test same drawing in both dropdowns
- [ ] **Step 2: Fix any issues found during testing**
Address any layout, interaction, or rendering issues discovered.
- [ ] **Step 3: Final commit**
```bash
git add -A
git commit -m "fix(ui): polish PatternTileForm after manual testing"
```