### Fail Fast Principle Example

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Illustrates the 'fail fast' and 'exit fast' coding style by checking for a null argument at the beginning of a method and throwing an exception immediately.

```csharp
// Ok
public void SomeMethod(ISomething something)
{
    // Check for known failure condition and exit quickly
    if (something is null)
        throw new ArgumentNullException(nameof(something));

    var things = _somethingElse.GetThoseThings();
    // ...
}

// Bad
public void SomeMethod(ISomething something)
{
    if (something != null)
    {
        var things = _somethingElse.GetThoseThings();
        // Lots of logic here that a maintainer has to scroll through.
    }
    else
    {
        // This should be moved to the top of the method
        throw new ArgumentNullException(nameof(something));
    }
}
```

--------------------------------

### Random Layout Algorithm Example

Source: https://context7.com/kernelith/graphshape/llms.txt

Applies the Random layout algorithm to place vertices within specified bounds. This is useful for initial visualization or when no specific arrangement is required. It requires vertex sizes and types to be defined. Ensure GraphShape and QuikGraph namespaces are imported.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
for (int i = 0; i < 10; i++)
    graph.AddVertex($"V{i}");

var vertexSizes = graph.Vertices.ToDictionary(v => v, v => new Size(40, 40));
var vertexTypes = graph.Vertices.ToDictionary(v => v, v => RandomVertexType.Free);

var parameters = new RandomLayoutParameters
{
    Bounds = new Size(800, 600)  // Layout area bounds
};

var algorithm = new RandomLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    null,
    vertexSizes,
    vertexTypes,
    parameters);

algorithm.Compute();
```

--------------------------------

### LinLog Layout Algorithm Example

Source: https://context7.com/kernelith/graphshape/llms.txt

Applies the LinLog layout algorithm to a graph with two clusters connected by a bridge. This algorithm uses logarithmic attraction and linear repulsion forces, effective for graphs with community structure. Ensure GraphShape and QuikGraph namespaces are imported.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();

// Create a graph with two clusters
// Cluster 1
graph.AddEdgeRange(new[]
{
    new Edge<string>("A1", "A2"),
    new Edge<string>("A2", "A3"),
    new Edge<string>("A3", "A1")
});

// Cluster 2
graph.AddEdgeRange(new[]
{
    new Edge<string>("B1", "B2"),
    new Edge<string>("B2", "B3"),
    new Edge<string>("B3", "B1")
});

// Bridge between clusters
graph.AddEdge(new Edge<string>("A2", "B2"));

var parameters = new LinLogLayoutParameters
{
    AttractionExponent = 1.0,   // Controls attraction strength
    RepulsiveExponent = 0.0     // Controls repulsion strength
};

var algorithm = new LinLogLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    parameters);

algorithm.Compute();

// Clusters will be visually separated
var positions = algorithm.VerticesPositions;
```

--------------------------------

### ISOM Layout Algorithm Example

Source: https://context7.com/kernelith/graphshape/llms.txt

Applies the ISOM (Inverted Self-Organizing Map) layout algorithm. This algorithm uses a self-organizing approach to position vertices iteratively. Key parameters include dimensions, epochs, and cooling/adaptation rates. Ensure GraphShape and QuikGraph namespaces are imported.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("Center", "N"),
    new Edge<string>("Center", "S"),
    new Edge<string>("Center", "E"),
    new Edge<string>("Center", "W"),
    new Edge<string>("N", "NE"),
    new Edge<string>("E", "NE"),
    new Edge<string>("S", "SE"),
    new Edge<string>("E", "SE")
});

var parameters = new ISOMLayoutParameters
{
    Width = 500,
    Height = 500,
    MaxEpoch = 2000,
    RadiusConstantTime = 100,
    InitialRadius = 5,
    MinRadius = 1,
    CoolingFactor = 2,
    InitialAdaption = 0.9,
    MinAdaption = 0.0
};

var algorithm = new ISOMLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    parameters);

algorithm.Compute();
```

--------------------------------

### Compound FDP Layout Algorithm Example

Source: https://context7.com/kernelith/graphshape/llms.txt

Applies the Compound FDP (Force-Directed Placement) algorithm for graphs with nested structures. It handles parent-child relationships between vertices. Requires definitions for vertex sizes, borders, and inner layout types. Ensure GraphShape and QuikGraph namespaces are imported.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("Container1", "Node1"),
    new Edge<string>("Container1", "Node2"),
    new Edge<string>("Container2", "Node3"),
    new Edge<string>("Node1", "Node3"),
    new Edge<string>("Node2", "Node3")
});

var vertexSizes = graph.Vertices.ToDictionary(v => v, v => new Size(60, 40));
var vertexBorders = new Dictionary<string, Thickness>
{
    ["Container1"] = new Thickness(5),
    ["Container2"] = new Thickness(5)
};
var layoutTypes = new Dictionary<string, CompoundVertexInnerLayoutType>
{
    ["Container1"] = CompoundVertexInnerLayoutType.Automatic,
    ["Container2"] = CompoundVertexInnerLayoutType.Automatic
};

var parameters = new CompoundFDPLayoutParameters
{
    IdealEdgeLength = 50,
    ElasticConstant = 0.005,
    RepulsionConstant = 150,
    GravitationFactor = 8
};

var algorithm = new CompoundFDPLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    null,
    vertexSizes,
    vertexBorders,
    layoutTypes,
    parameters);

algorithm.Compute();
```

--------------------------------

### LINQ Filter, Order, and Select

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Place 'Where' clauses before other query clauses to ensure subsequent operations work on a filtered dataset. This example filters by author, orders by publication year, and selects the result.

```csharp
var tolkienBooks = books.Where(x => x.Author == "Tolkien")
                        .OrderBy(x => x.PublicationYear)
                        .Select(x);
```

--------------------------------

### Interface Implementation Class Naming in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Suffix interface implementation classes with the non-prefixed interface name. For example, a class implementing 'ISomething' should be named 'ThisSomething'.

```csharp
public class ThisSomething : ISomething
{
}
```

--------------------------------

### C# Method Signature Line Breaks

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

When a C# method signature exceeds the line length limit, break each parameter onto a new, indented line, starting with the first parameter.

```csharp
public void SomeMethodWithLongSignature(
    SomeObject parameter1,
    SomeOtherObject parameter2,
    SomeTestObject parameter3,
    SomeFinalObject parameter4)
{
}
```

--------------------------------

### Use StandardLayoutAlgorithmFactory in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Demonstrates creating layout algorithms dynamically and checking requirements like overlap removal or edge routing.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("A", "B"),
    new Edge<string>("B", "C"),
    new Edge<string>("C", "D")
});

var factory = new StandardLayoutAlgorithmFactory<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>();

// List available algorithms
Console.WriteLine("Available algorithms:");
foreach (var algorithmType in factory.AlgorithmTypes)
{
    Console.WriteLine($"  - {algorithmType}");
}
// Output: Circular, Tree, FR, BoundedFR, KK, ISOM, LinLog, Sugiyama, CompoundFDP, Random

// Create layout context
var sizes = graph.Vertices.ToDictionary(v => v, v => new Size(60, 30));
var context = new LayoutContext<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    null,  // initial positions
    sizes,
    LayoutMode.Simple);

// Create algorithm by name
string algorithmType = "FR";
if (factory.IsValidAlgorithm(algorithmType))
{
    var parameters = factory.CreateParameters(algorithmType, null);
    var algorithm = factory.CreateAlgorithm(algorithmType, context, parameters);

    algorithm?.Compute();

    // Check if additional processing is needed
    bool needsOverlapRemoval = factory.NeedOverlapRemoval(algorithmType);
    bool needsEdgeRouting = factory.NeedEdgeRouting(algorithmType);

    Console.WriteLine($"{algorithmType}: NeedsOverlapRemoval={needsOverlapRemoval}, NeedsEdgeRouting={needsEdgeRouting}");
}
```

--------------------------------

### Implement Kamada-Kawai Layout in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Configures and executes the KK spring-model layout algorithm, including progress tracking via event subscription.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("Node1", "Node2"),
    new Edge<string>("Node1", "Node3"),
    new Edge<string>("Node2", "Node4"),
    new Edge<string>("Node3", "Node4"),
    new Edge<string>("Node4", "Node5"),
    new Edge<string>("Node5", "Node6")
});

// Configure KK layout parameters
var parameters = new KKLayoutParameters
{
    Width = 800,
    Height = 600,
    MaxIterations = 500,
    K = 1.0,                      // Spring constant
    LengthFactor = 1.0,           // Multiplier for ideal edge length
    DisconnectedMultiplier = 0.5, // Distance factor for disconnected components
    ExchangeVertices = true       // Allow vertex position swapping for optimization
};

var algorithm = new KKLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    parameters);

// Subscribe to progress updates
algorithm.ProgressChanged += (sender, percent) =>
{
    Console.WriteLine($"Layout progress: {percent:F1}%");
};

algorithm.Compute();

// Get final positions
var positions = algorithm.VerticesPositions;
Console.WriteLine($"Layout computed for {positions.Count} vertices");
```

--------------------------------

### Simplify object creation with initializers

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use object and collection initializers to simplify the instantiation of complex types.

```csharp
// Ok
var myObjects = new List<SomeObject>
{
    new SomeObject("value1"),
    new SomeObject("value2"),
};

var studentById = new Dictionary<int, Student>
{
    [123456] = new Student { Name = "John Doe", Age = 17} },
    [456789] = new Student { Name = "Dany Doe", Age = 16} },
};
```

--------------------------------

### Manage GraphLayout in C# Code-Behind

Source: https://context7.com/kernelith/graphshape/llms.txt

Demonstrates programmatic graph creation, layout configuration, and manual relayout triggers.

```csharp
using GraphShape.Controls;
using QuikGraph;

// Code-behind usage
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        // Create and bind a graph
        var graph = new BidirectionalGraph<object, IEdge<object>>();

        var vertices = new object[] { "Start", "Process1", "Process2", "End" };
        graph.AddVertexRange(vertices);
        graph.AddEdgeRange(new IEdge<object>[]
        {
            new Edge<object>("Start", "Process1"),
            new Edge<object>("Start", "Process2"),
            new Edge<object>("Process1", "End"),
            new Edge<object>("Process2", "End")
        });

        // Configure layout
        graphLayout.LayoutAlgorithmType = "Sugiyama";
        graphLayout.OverlapRemovalAlgorithmType = "FSA";
        graphLayout.OverlapRemovalConstraint = AlgorithmConstraints.Automatic;
        graphLayout.AsyncCompute = true;

        // Set the graph (triggers layout computation)
        graphLayout.Graph = graph;
    }

    private void RelayoutButton_Click(object sender, RoutedEventArgs e)
    {
        graphLayout.Relayout();  // Recompute layout from scratch
    }

    private void ContinueLayoutButton_Click(object sender, RoutedEventArgs e)
    {
        graphLayout.ContinueLayout();  // Continue from current positions
    }
}
```

--------------------------------

### Initialize arrays concisely

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use collection initializer syntax for arrays on declaration, or var with explicit instantiation.

```csharp
string[] vowels1 = { "a", "e", "i", "o", "u" };
 
// If you use explicit instantiation, you can use var.
var vowels2 = new string[] { "a", "e", "i", "o", "u" };
 
// If you specify an array size, you must initialize the elements one at a time.
var vowels3 = new string[5];
vowels3[0] = "a";
vowels3[1] = "e";
// Etc
```

--------------------------------

### Create wrappers for static dependencies

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

Define interfaces and wrappers for static .NET classes to improve testability and control behavior.

```csharp
public interface IFile
{
    bool Exists(string path);
}

public class FileWrapper : IFile
{
    public bool Exists(string path)
    {
        return File.Exists(path);
    }
}
```

--------------------------------

### Simple Tree Layout Algorithm in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Arranges vertices hierarchically from a root. Supports multiple layout directions and configurable gaps. Uses BFS or DFS for spanning tree generation.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

// Create a tree-like graph structure
var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("Root", "Child1"),
    new Edge<string>("Root", "Child2"),
    new Edge<string>("Root", "Child3"),
    new Edge<string>("Child1", "Grandchild1"),
    new Edge<string>("Child1", "Grandchild2"),
    new Edge<string>("Child2", "Grandchild3"),
    new Edge<string>("Child3", "Grandchild4"),
    new Edge<string>("Child3", "Grandchild5")
});

var vertexSizes = graph.Vertices.ToDictionary(v => v, v => new Size(80, 40));

var parameters = new SimpleTreeLayoutParameters
{
    Direction = LayoutDirection.TopToBottom,  // Tree grows downward
    VertexGap = 20,                           // Horizontal gap between siblings
    LayerGap = 50,                            // Vertical gap between layers
    SpanningTreeGeneration = SpanningTreeGeneration.BFS  // Use breadth-first search
};

var algorithm = new SimpleTreeLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    vertexSizes,
    parameters);

algorithm.Compute();

// Vertices arranged in tree hierarchy
// Root at top, children below, grandchildren at bottom
```

--------------------------------

### Implement Fruchterman-Reingold Layout in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Configures and executes the FR force-directed layout algorithm to calculate vertex positions for a bidirectional graph.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

// Create a graph with vertices and edges
var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("A", "B"),
    new Edge<string>("A", "C"),
    new Edge<string>("B", "D"),
    new Edge<string>("C", "D"),
    new Edge<string>("D", "E")
});

// Configure FR layout parameters
var parameters = new FreeFRLayoutParameters
{
    MaxIterations = 200,
    InitialTemperature = 10.0,
    Lambda = 0.95,  // Cooling factor for exponential cooling
    CoolingFunction = FRCoolingFunction.Exponential
};

// Create and run the layout algorithm
var algorithm = new FRLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    parameters);

algorithm.Compute();

// Access computed vertex positions
foreach (var vertex in graph.Vertices)
{
    Point position = algorithm.VerticesPositions[vertex];
    Console.WriteLine($"Vertex {vertex}: X={position.X:F2}, Y={position.Y:F2}");
}
// Output:
// Vertex A: X=45.32, Y=78.91
// Vertex B: X=123.45, Y=56.78
// Vertex C: X=89.12, Y=145.67
// Vertex D: X=167.89, Y=112.34
// Vertex E: X=234.56, Y=89.01
```

--------------------------------

### C# Comment Formatting

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/general-coding-guidelines.md

Demonstrates the required spacing and style for single-line comments.

```csharp
// This is a example comment. It showcases
// the way comment must be written.
```

--------------------------------

### Manage disposable objects with using

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use the using statement to ensure Dispose is called on IDisposable objects, replacing manual try-finally blocks.

```csharp
// This try-finally statement only calls Dispose in the finally block
var someDisposableObject = new DisposableObject();
try
{
    // ...
}
finally
{
    someDisposableObject.Dispose();
}
 
// You can do the same thing with a using statement
using (var someDisposableObject = new DisposableObject())
{
    // ...
}
```

--------------------------------

### Circular Layout Algorithm in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Arranges graph vertices in a circle. Requires vertex sizes to be defined. The circle radius is automatically calculated.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
string[] vertices = { "V1", "V2", "V3", "V4", "V5", "V6" };
foreach (var v in vertices)
    graph.AddVertex(v);

graph.AddEdgeRange(new[]
{
    new Edge<string>("V1", "V2"),
    new Edge<string>("V2", "V3"),
    new Edge<string>("V3", "V4"),
    new Edge<string>("V4", "V5"),
    new Edge<string>("V5", "V6"),
    new Edge<string>("V6", "V1")  // Complete the cycle
});

// Define vertex sizes (required for circular layout)
var vertexSizes = new Dictionary<string, Size>();
foreach (var v in vertices)
{
    vertexSizes[v] = new Size(50, 30);  // Width=50, Height=30
}

var algorithm = new CircularLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    vertexSizes,
    new CircularLayoutParameters());

algorithm.Compute();

// Vertices are now arranged in a circle
foreach (var kvp in algorithm.VerticesPositions)
{
    Console.WriteLine($"{kvp.Key}: ({kvp.Value.X:F2}, {kvp.Value.Y:F2})");
}
```

--------------------------------

### Sugiyama (Hierarchical) Layout Algorithm in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Produces hierarchical layouts for DAGs by organizing vertices into layers and minimizing edge crossings. Supports configurable directions, gaps, and edge routing.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

// Create a DAG representing a dependency graph
var graph = new BidirectionalGraph<string, Edge<string>>();
graph.AddVerticesAndEdgeRange(new[]
{
    new Edge<string>("Start", "TaskA"),
    new Edge<string>("Start", "TaskB"),
    new Edge<string>("TaskA", "TaskC"),
    new Edge<string>("TaskB", "TaskC"),
    new Edge<string>("TaskB", "TaskD"),
    new Edge<string>("TaskC", "End"),
    new Edge<string>("TaskD", "End")
});

var vertexSizes = graph.Vertices.ToDictionary(v => v, v => new Size(100, 50));

var parameters = new SugiyamaLayoutParameters
{
    Direction = LayoutDirection.TopToBottom,
    LayerGap = 30,                                    // Gap between layers
    SliceGap = 20,                                    // Gap between vertices in same layer
    MinimizeEdgeLength = true,
    OptimizeWidth = false,
    EdgeRouting = SugiyamaEdgeRouting.Orthogonal     // Use orthogonal edge routing
};

var algorithm = new SugiyamaLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    null,  // Initial positions (optional)
    vertexSizes,
    parameters);

algorithm.Compute();

// Access edge routing information
foreach (var edge in graph.Edges)
{
    var routePoints = algorithm.EdgeRoutes[edge];
    Console.WriteLine($"Edge {edge.Source} -> {edge.Target} has {routePoints?.Length ?? 0} route points");
}
```

--------------------------------

### C# Code Commenting Structure

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/general-coding-guidelines.md

Illustrates the recommended placement of comments relative to code blocks.

```csharp
int[] scores = GetScores();

// Calculate the average
int count = scores.Count;
double sum = scores.Sum();
double average = sum / count;

Console.WriteLine(x.Average);
```

--------------------------------

### Implement Static Empty Property for Empty Instances

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

When a class represents a concept that can have an empty state, implement a static read-only `Empty` property. This provides a convenient and canonical way to access the empty instance.

```csharp
public class SomeObject
{
    public static readonly SomeObject Empty = new SomeObject();
    // ...
}
```

--------------------------------

### Field Naming Convention in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Prefix all private fields with an underscore '_'. If a file's existing style differs, that style takes precedence.

```csharp
public class SomeClass
{
    private ISomething _thisSomething;
}
```

--------------------------------

### Configure GraphLayout State Tracking for Animation

Source: https://context7.com/kernelith/graphshape/llms.txt

Enable and utilize state tracking in the GraphLayout control for animating layout changes. This allows navigation through intermediate layout states and access to state-specific information.

```csharp
// Configure state tracking
graphLayout.ShowAllStates = true;  // Store all intermediate states

// After layout completes, navigate through states
int totalStates = graphLayout.StateCount;
Console.WriteLine($"Total layout states: {totalStates}");

// Jump to a specific state
graphLayout.StateIndex = 0;  // Go to initial state

// Animate through states
for (int i = 0; i < graphLayout.StateCount; i++)
{
    graphLayout.StateIndex = i;
    await Task.Delay(100);  // Wait between states
}

// Access current state information
var currentState = graphLayout.LayoutState;
Console.WriteLine($"State {currentState.StateIndex}: Computed in {currentState.ComputationTime}");
```

--------------------------------

### C# Property Backing Field Placement

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Define property-backing fields immediately before their corresponding properties in C#.

```csharp
private string _name;

public string Name
{
    get => _name;
    set => _name = value;
}
```

--------------------------------

### Track Layout Algorithm Progress

Source: https://context7.com/kernelith/graphshape/llms.txt

Monitor the progress of layout algorithms during long-running computations. Event handlers can be attached to 'ProgressChanged' and 'IterationEnded' to receive updates and optionally abort the process.

```csharp
using GraphShape;
using GraphShape.Algorithms.Layout;
using QuikGraph;

var graph = new BidirectionalGraph<string, Edge<string>>();
// ... add vertices and edges ...

var algorithm = new FRLayoutAlgorithm<string, Edge<string>, IBidirectionalGraph<string, Edge<string>>>(
    graph,
    new FreeFRLayoutParameters { MaxIterations = 500 });

// Track progress
algorithm.ProgressChanged += (sender, percent) =>
{
    Console.WriteLine($"Progress: {percent:F1}%");
    // Update progress bar in UI
};

// Track iterations
algorithm.IterationEnded += (sender, args) =>
{
    Console.WriteLine($"Iteration {args.Iteration}: {args.StatusInPercent:F1}% - {args.Message}");

    // Access intermediate positions
    var positions = args.VerticesPositions;

    // Optionally abort
    if (ShouldCancel)
        args.Abort = true;
};

// Run asynchronously
await Task.Run(() => algorithm.Compute());
Console.WriteLine("Layout complete!");
```

--------------------------------

### C# Allman Style Braces

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use Allman style braces for C# code, where each brace begins on a new line. Exceptions are allowed for single return or throw statements.

```csharp
if (a == b)
{
    c = d;
}
```

```csharp
if (a == b)
    return;
```

```csharp
if (a == b) {
    c = d;
}
```

```csharp
if (a == b)
    c = d;
else
{
    c = e;
}
```

--------------------------------

### Extension Class and File Naming in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Name extension classes and files by the type being extended. Remove the 'I' prefix for extensions of interfaces. This promotes discoverability of extension methods.

```csharp
// SomeClassExtensions.cs
public static class SomeClassExtensions
{
    public static int ToInt(this SomeClass input)
    {
        // ...
    }
}

// Or

public interface ISomething
{
}

public static class SomethingExtensions
{
}
```

--------------------------------

### Refactor misleading method names

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

Avoid negative method names that cause double negatives. Use descriptive names that accurately reflect the method's side effects.

```csharp
// The method name includes the text "Not" and returns a boolean value.
// This could create scenarios where callers are performing double
// negatives, which are hard to read.
private static bool IsNotConnected(SocketWrapper socket, string serverName)
{
    // The behavior of the method currently checks if socket is connected to the provided
    // server. If not it tries to connect to it. But this is not reflected in the method name
    // at all and is only discoverable by a developer inspecting the code.
    if (socket.Server != serverName)
    {
        socket.Disconnect();
    }

    if (socket.IsConnected())
        return false;

    return !socket.Connect(serverName);
}
```

```csharp
private static bool TryConnect(SocketWrapper socket, string serverName)
{
    // ...
}
```

--------------------------------

### Implement FSA Overlap Removal in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Uses the FSAAlgorithm to compute minimal displacements for overlapping vertex rectangles.

```csharp
using GraphShape;
using GraphShape.Algorithms.OverlapRemoval;

// Define rectangles representing vertex bounding boxes
var rectangles = new Dictionary<string, Rect>
{
    ["V1"] = new Rect(0, 0, 100, 50),
    ["V2"] = new Rect(50, 25, 100, 50),    // Overlaps with V1
    ["V3"] = new Rect(80, 60, 100, 50),    // Overlaps with V2
    ["V4"] = new Rect(200, 0, 100, 50)     // No overlap
};

var parameters = new OverlapRemovalParameters
{
    HorizontalGap = 10,  // Minimum horizontal gap between rectangles
    VerticalGap = 10     // Minimum vertical gap between rectangles
};

var algorithm = new FSAAlgorithm<string>(rectangles, parameters);
algorithm.Compute();

// Get adjusted positions
foreach (var kvp in algorithm.Rectangles)
{
    Console.WriteLine($"{kvp.Key}: Position=({kvp.Value.X:F2}, {kvp.Value.Y:F2})");
}
```

--------------------------------

### Style Vertices and Edges with DataTemplates

Source: https://context7.com/kernelith/graphshape/llms.txt

Customizes the visual appearance of graph elements using WPF DataTemplates and Styles.

```xml
<Window.Resources>
    <!-- Custom vertex template -->
    <DataTemplate x:Key="VertexTemplate" DataType="{x:Type local:MyVertex}">
        <Border Background="LightBlue"
                BorderBrush="DarkBlue"
                BorderThickness="2"
                CornerRadius="5"
                Padding="10,5">
            <StackPanel>
                <TextBlock Text="{Binding Label}" FontWeight="Bold" />
                <TextBlock Text="{Binding Id}" FontSize="10" Foreground="Gray" />
            </StackPanel>
        </Border>
    </DataTemplate>

    <!-- Custom edge template -->
    <Style TargetType="{x:Type controls:EdgeControl}">
        <Setter Property="Foreground" Value="DarkGray" />
        <Setter Property="StrokeThickness" Value="2" />
    </Style>
</Window.Resources>

<controls:GraphLayout Graph="{Binding Graph}"
                      LayoutAlgorithmType="Tree"
                      VertexTemplate="{StaticResource VertexTemplate}" />
```

--------------------------------

### Implement Null Object Pattern for Empty Interfaces

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

When an interface implementation does nothing, use the Null Object Pattern. This provides a default, non-operational implementation, adhering to the interface contract without requiring explicit null checks.

```csharp
public interface ISomething
{
    DateTime GetDateTime(string parameter);
}

public class NullSomething : ISomething
{
    public DateTime GetDateTime(string parameter)
    {
        return default(DateTime);
    }
}
```

--------------------------------

### Declare local variables with appropriate types

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Specify explicit types for idiomatic types, but use var when the type is clear from the context.

```csharp
// When the type of a variable is clear from the context, use var otherwise explicit it
string var1 = "A string";
int var2 = 27;
int var3 = Convert.ToInt32(Console.ReadLine());
int var4 = SomeFunction();
var var5 = new SomeClass();
SomeClass var6 = SomeOtherFunction();
```

--------------------------------

### C# Auto-Properties Formatting

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Define C# auto-properties on a single line for conciseness.

```csharp
public int Property { get; set; }
```

```csharp
public int Property
{
    get;
    set;
}
```

--------------------------------

### Filter and Select LINQ Query

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use method syntax for LINQ queries and meaningful variable names. Filters data based on author and selects book names.

```csharp
var tolkienBooks = books.Where(x => x.Author == "Tolkien")
                        .Select(x => x.Name);
```

--------------------------------

### Implement Typed GraphLayout

Source: https://context7.com/kernelith/graphshape/llms.txt

Uses generic GraphLayout for custom vertex and edge types to ensure type safety.

```csharp
using GraphShape.Controls;
using QuikGraph;

// Define custom vertex class
public class MyVertex
{
    public string Id { get; set; }
    public string Label { get; set; }

    public override string ToString() => Label;
}

// Define custom edge class
public class MyEdge : Edge<MyVertex>
{
    public string Label { get; set; }

    public MyEdge(MyVertex source, MyVertex target, string label = null)
        : base(source, target)
    {
        Label = label;
    }
}

// Create typed graph layout
public class MyGraphLayout : GraphLayout<MyVertex, MyEdge, BidirectionalGraph<MyVertex, MyEdge>>
{
    public MyGraphLayout()
    {
        // Default configuration
        LayoutAlgorithmType = "KK";
        OverlapRemovalAlgorithmType = "FSA";
    }
}

// Usage
var graph = new BidirectionalGraph<MyVertex, MyEdge>();

var v1 = new MyVertex { Id = "1", Label = "Node 1" };
var v2 = new MyVertex { Id = "2", Label = "Node 2" };
var v3 = new MyVertex { Id = "3", Label = "Node 3" };

graph.AddVertexRange(new[] { v1, v2, v3 });
graph.AddEdgeRange(new[]
{
    new MyEdge(v1, v2, "Edge 1-2"),
    new MyEdge(v2, v3, "Edge 2-3"),
    new MyEdge(v1, v3, "Edge 1-3")
});

var graphLayout = new MyGraphLayout();
graphLayout.Graph = graph;
```

--------------------------------

### Explicit Scope vs. Implicit Scope

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Demonstrates the use of explicit scope/visibility modifiers (public, private) for class members, which is preferred over implicit scope.

```csharp
// Ok
public class Something
{
    private const int MaximumAge = 100;

    public int Age { get; set; }

    public void SayHello()
    {
        Console.WriteLine("Hello");
    }
}

// Bad
class Something
{
    const int MaximumAge = 100;

    int Age { get; set; }

    void SayHello()
    {
        Console.WriteLine("Hello");
    }
}
```

--------------------------------

### C# Empty Constructors

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Constructors in C# with no bodies are not shortened and should be formatted with braces on separate lines.

```csharp
public SomeClass()
{
}
```

```csharp
public SomeClass(string parameter)
    : base(parameter)
{
}
```

--------------------------------

### Implement One Way FSA Overlap Removal in C#

Source: https://context7.com/kernelith/graphshape/llms.txt

Uses OneWayFSAAlgorithm to restrict vertex movement to a single dimension, preserving alignment in the other.

```csharp
using GraphShape;
using GraphShape.Algorithms.OverlapRemoval;

var rectangles = new Dictionary<string, Rect>
{
    ["A"] = new Rect(0, 0, 80, 40),
    ["B"] = new Rect(60, 0, 80, 40),   // Horizontal overlap
    ["C"] = new Rect(120, 0, 80, 40)   // Horizontal overlap
};

var parameters = new OneWayFSAParameters
{
    HorizontalGap = 15,
    VerticalGap = 15,
    Way = OneWayFSAWay.Horizontal  // Only adjust horizontal positions
};

var algorithm = new OneWayFSAAlgorithm<string>(rectangles, parameters);
algorithm.Compute();

// Rectangles now have no horizontal overlaps, vertical positions unchanged
```

--------------------------------

### Pascal Casing for Types and Methods in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use Pascal casing for public type names, method names, and constants. This convention enhances code readability and maintainability.

```csharp
public class SomeClass
{
    private const int DefaultSize = 100;

    public void SomeMethod()
    {
    }
}
```

--------------------------------

### Prefer Abstract Return Types in Interfaces

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

Use abstract return types like IEnumerable<T> and IReadOnlyDictionary<TKey, TValue> for public members to promote flexibility and prevent unintended modifications. Avoid concrete types like IList<T> and IDictionary<TKey, TValue> unless modifications are intended.

```csharp
public interface IStudentDataProvider
{
    IEnumerable<Student> GetAll();
    IReadOnlyDictionary<string, Student> GetStudentByNameDictionary();
}
```

```csharp
public interface IStudentDataProvider
{
    IList<Student> GetAll();
    IDictionary<string, Student> GetStudentByNameDictionary();
}
```

--------------------------------

### C# Supporting Method Placement

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Define non-shared supporting methods in C# immediately following the method they support, or use local methods declared at the end of the method.

```csharp
public void DoSomethingInteresting()
{
    // ...
    int something = GetSomething();
    // ...
    int anotherThing = GetAnotherThing();
}

private int GetSomething()
{
   // ...
}

private int GetAnotherThing()
{
   // ...
}
```

```csharp
// Local method variant
public void DoSomethingCompletelyDifferent()
{
    int something = GetSomething();
    // ...

    #region Local function

    int GetSomething()
    {
        // ...
    }

    #endregion
}
```

--------------------------------

### Define generic type parameters

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

Use 'T' for single generic types and descriptive names for multiple generic types.

```csharp
public interface ISomething<T>
```

```csharp
public interface IService<TRequest, TResponse>
```

--------------------------------

### Perform case-insensitive string comparisons

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use StringComparison.InvariantCultureIgnoreCase for case-insensitive checks instead of converting string casing.

```csharp
string str1 = "Some string value";
string str2 = "SoMe STRing ValuE";

// Ok
if (str1.Equals(str2, StringComparison.InvariantCultureIgnoreCase))
{
    return true;
}

// Ok
if (string.Equals(str1, str2, StringComparison.InvariantCultureIgnoreCase))
{
    return true;
}

// Bad
if (value1.ToLower() == value2.ToLower())
{
    return true;
}
```

--------------------------------

### C# Base/This Constructor Calls

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Calls to base or this constructors in C# should be placed on an indented, separate line.

```csharp
public SomeClass(string parameter)
    : base(parameter)
{
}
```

--------------------------------

### Configure GraphLayout in XAML

Source: https://context7.com/kernelith/graphshape/llms.txt

Defines a GraphLayout control within a WPF Window, specifying layout and overlap removal algorithms.

```xml
<!-- XAML Usage -->
<Window xmlns:controls="clr-namespace:GraphShape.Controls;assembly=GraphShape.Controls">
    <controls:GraphLayout x:Name="graphLayout"
                          LayoutAlgorithmType="FR"
                          OverlapRemovalAlgorithmType="FSA"
                          HighlightAlgorithmType="Simple"
                          AsyncCompute="True"
                          ShowAllStates="False">
        <controls:GraphLayout.LayoutParameters>
            <layout:FreeFRLayoutParameters MaxIterations="200" />
        </controls:GraphLayout.LayoutParameters>
    </controls:GraphLayout>
</Window>
```

--------------------------------

### Camel Casing for Local Variables and Arguments in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Employ camel casing for local variable names and method arguments. This distinguishes them from type and method names.

```csharp
public void SomeMethod(int someNumber)
{
    int number;
    // ...
}
```

--------------------------------

### Concatenate strings with interpolation

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use string interpolation for concise concatenation of short strings.

```csharp
string displayName = $"{person.LastName}, {person.FirstName}";
```

--------------------------------

### Append strings efficiently in loops

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use StringBuilder for appending strings within loops to improve performance with large amounts of text.

```csharp
string phrase = "A long sentence";
var manyPhrases = new StringBuilder();
for (int i = 0; i < 10000; ++i)
{
    manyPhrases.Append(phrase);
}
```

--------------------------------

### C# Brace Spacing

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Avoid blank lines between sets of closing braces in C# to maintain a compact structure.

```csharp
if (a == b)
{
    if (c == d)
    {
        if (e == f)
        {
            DoSomething();
        }
    }

} // The blank line above this brace should be removed.
```

--------------------------------

### Interface Naming Convention in C#

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Prefix interface names with 'I' to clearly identify them as interfaces. This convention aids in distinguishing interfaces from concrete classes.

```csharp
public interface ISomething
{
}
```

--------------------------------

### C# Multi-line Conditional Statements

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

For multi-line conditional statements in C#, place the conditional operator at the beginning of each line for clarity.

```csharp
public bool SomeMethod()
{
    return !(myVar || myOtherVar
        || something || somethingElse)
        && string.IsNullOrWhiteSpace(myStr)
        && !string.IsNullOrWhiteSpace(myOtherStr);
}
```

```csharp
public bool SomeMethod()
{
    return !(myVar || myOtherVar ||
        something || somethingElse) &&
        string.IsNullOrWhiteSpace(myStr) &&
        !string.IsNullOrWhiteSpace(myOtherStr);
}
```

--------------------------------

### LINQ Join with Anonymous Type

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use aliases to ensure correct capitalization (Pascal casing) for property names of anonymous types when joining collections.

```csharp
var booksInfo = books.Join(
    authors,
    book => book.Author,
    author => author.Name,
    (book, author) => new
    {
        Book = book,
        Author = author
    });
```

--------------------------------

### Decompose Cache Provider Interface

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-best-practices.md

Decompose a monolithic ICacheProvider into separate ICacheReader and ICacheWriter interfaces. This improves clarity and separation of concerns, making the intent of callers more explicit.

```csharp
// Instead of doing this...
public interface ICacheProvider
{
    void RemoveObjects(string keys);
    void RemoveObject(string key);
    bool TryGetObject(string key, out object value);
    void SetObject(string key, object obj);
    void InsertObject(string key, object value, DateTime absoluteExpiration, TimeSpan slidingExpiration);
}

// Consider decomposing the interfaces like this
public interface ICacheReader
{
    bool TryGetObject(string key, out object value);
}

public interface ICacheWriter
{
    void RemoveObjects(string keys);
    void RemoveObject(string key);
    void SetObject(string key, object obj);
    void InsertObject(string key, object value, DateTime absoluteExpiration, TimeSpan slidingExpiration);
}
```

--------------------------------

### Anonymous Type with Explicit Properties

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use explicit property names on anonymous types and prefer placing each property on a separate line for clarity.

```csharp
var anonymousObj =
{
    Property1 = sourceA.Property1,
    Property2 = sourceB.Property2
};
```

--------------------------------

### Validate method arguments for null

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Check for null values in public, protected, and internal method arguments to prevent unexpected null reference exceptions.

```csharp
public void Something(object obj)
{
    if (obj is null)
        throw new ArgumentNullException(nameof(obj));
}
```

--------------------------------

### C# Generic Type Constraints

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Bring constraints for generic types in C# onto separate, indented lines for improved readability.

```csharp
public abstract class SomeBase<TArg1, TArg2> : SomeClass
    where TArg1 : ISomething, new()
    where TArg2 : class
{
}
```

--------------------------------

### Validate constructor arguments for null

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Use the null-coalescing operator to throw ArgumentNullException during object construction.

```csharp
public class A
{
    private readonly B _b;

    public A(B b)
    {
        _b = b ?? throw new ArgumentNullException(nameof(b));
    }
}
```

--------------------------------

### C# Blank Lines After Closing Braces

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Include blank lines after closing braces in C# when the next statement is not part of a continuing construct like if/else or try/catch/finally.

```csharp
public static string ToCamelCase(string text)
{
    if (string.IsNullOrWhiteSpace(text))
    {
        return text;
    }

    return char.ToLower(text[0]) + text.Substring(1);
}
```

```csharp
public static string ToCamelCase(string text)
{
    if (string.IsNullOrWhiteSpace(text))
        return text;

    return char.ToLower(text[0]) + text.Substring(1);
}
```

```csharp
public static string ToCamelCase(string text)
{
    if (string.IsNullOrWhiteSpace(text))
    {
        return text;
    }
    return char.ToLower(text[0]) + text.Substring(1);
}
```

--------------------------------

### LINQ Join with Renamed Properties

Source: https://github.com/kernelith/graphshape/blob/master/docs/documentation/guidelines/csharp-coding-guidelines.md

Rename properties in the result of a LINQ join when property names can be ambiguous, to clarify their meaning.

```csharp
var books = books.Join(
    authors,
    book => book.Author,
    author => author.Name,
    (book, author) => new
    {
        BookName = book.Name,
        AuthorId = author.Id
    });
```

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