### Basic XAML Drawing Control Setup

Source: https://context7.com/microsoft/win2d/llms.txt

Set up the CanvasControl in XAML, defining its name, event handlers for resource creation and drawing, and a default clear color.

```xml
<Page
    xmlns:canvas="using:Microsoft.Graphics.Canvas.UI.Xaml"
    Unloaded="Page_Unloaded">
    <Grid>
        <canvas:CanvasControl
            x:Name="canvasControl"
            CreateResources="Canvas_CreateResources"
            Draw="Canvas_Draw"
            ClearColor="CornflowerBlue"/>
    </Grid>
</Page>
```

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

### Check CanvasDevice Capabilities

Source: https://context7.com/microsoft/win2d/llms.txt

Provides examples of checking various capabilities of a CanvasDevice, such as pixel format support, buffer precision, maximum bitmap size, and whether the device is currently lost.

```csharp
// Check device capabilities
void CheckDeviceCapabilities(CanvasDevice device)
{
    // Check pixel format support
    bool supportsR16G16 = device.IsPixelFormatSupported(
        DirectXPixelFormat.R16G16Float);

    // Check buffer precision support
    bool supports16BitFloat = device.IsBufferPrecisionSupported(
        CanvasBufferPrecision.Precision16Float);

    // Get maximum bitmap size
    int maxBitmapSize = device.MaximumBitmapSizeInPixels;

    // Check if device is lost
    bool isLost = device.IsDeviceLost(0);

    Debug.WriteLine($"Max bitmap size: {maxBitmapSize}");
    Debug.WriteLine($"Supports R16G16 float: {supportsR16G16}");
}
```

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

### XAML Setup for Win2D CanvasControl

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/README.md

This XAML snippet shows how to declare a CanvasControl within a Grid layout. Ensure the correct namespace is included. The Draw event handler is specified.

```xml
xmlns:canvas="using:Microsoft.Graphics.Canvas.UI.Xaml"

<Grid>
    <canvas:CanvasControl Draw="canvasControl_Draw" ClearColor="CornflowerBlue" />
</Grid>
```

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

### Basic Sample Export

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/tools/exportsample/README.txt

Use this command to export Win2D samples to a specified directory. Ensure you replace 'C:\Path\To\Win2D' and 'C:\Path\To\Samples' with your actual paths.

```batch
C:\Path\To\Win2D> exportsample c:\Path\To\Samples
```

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

### Create CanvasDevice Instances

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates various ways to create CanvasDevice instances, including shared devices, dedicated devices, and forcing software rendering. Use GetSharedDevice for multiple controls.

```csharp
// Device creation
void CreateDevices()
{
    // Get shared device (recommended for multiple controls)
    var sharedDevice = CanvasDevice.GetSharedDevice();

    // Create dedicated device
    var dedicatedDevice = new CanvasDevice();

    // Force software rendering
    var softwareDevice = new CanvasDevice(true);

    // Get shared device with specific options
    var forceSoftware = CanvasDevice.GetSharedDevice(forceSoftwareRenderer: false);
}
```

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

### Create and Use Win2D Brushes

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates creating and using solid color, linear gradient, radial gradient, and image brushes. Brush properties can be modified dynamically.

```csharp
using Microsoft.Graphics.Canvas.Brushes;

CanvasSolidColorBrush solidBrush;
CanvasLinearGradientBrush linearGradient;
CanvasRadialGradientBrush radialGradient;
CanvasImageBrush imageBrush;

void CreateBrushes(ICanvasResourceCreator creator, CanvasBitmap texture)
{
    // Solid color brush
    solidBrush = new CanvasSolidColorBrush(creator, Colors.Purple);

    // Linear gradient brush
    var linearStops = new CanvasGradientStop[]
    {
        new CanvasGradientStop { Position = 0.0f, Color = Colors.Red },
        new CanvasGradientStop { Position = 0.5f, Color = Colors.Green },
        new CanvasGradientStop { Position = 1.0f, Color = Colors.Blue }
    };
    linearGradient = new CanvasLinearGradientBrush(creator, linearStops);
    linearGradient.StartPoint = new Vector2(0, 0);
    linearGradient.EndPoint = new Vector2(200, 200);

    // Radial gradient brush
    var radialStops = new CanvasGradientStop[]
    {
        new CanvasGradientStop { Position = 0.0f, Color = Colors.White },
        new CanvasGradientStop { Position = 0.5f, Color = Colors.Yellow },
        new CanvasGradientStop { Position = 1.0f, Color = Colors.Orange }
    };
    radialGradient = new CanvasRadialGradientBrush(creator, radialStops);
    radialGradient.Center = new Vector2(100, 100);
    radialGradient.RadiusX = 100;
    radialGradient.RadiusY = 100;

    // Image brush (tiled texture)
    imageBrush = new CanvasImageBrush(creator, texture);
    imageBrush.ExtendX = CanvasEdgeBehavior.Wrap;
    imageBrush.ExtendY = CanvasEdgeBehavior.Wrap;
}

void DrawWithBrushes(CanvasDrawingSession ds)
{
    // Use brushes for fills and strokes
    ds.FillRectangle(0, 0, 200, 200, solidBrush);
    ds.FillEllipse(350, 100, 100, 100, linearGradient);
    ds.FillRoundedRectangle(500, 0, 200, 200, 20, 20, radialGradient);
    ds.FillRectangle(0, 250, 700, 200, imageBrush);

    // Modify brush properties dynamically
    solidBrush.Color = Colors.Cyan;
    solidBrush.Opacity = 0.5f;
    ds.FillCircle(100, 350, 80, solidBrush);
}
```

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

### Sample Export with Custom NuGet Package Source

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/tools/exportsample/README.txt

Configure the export process to restore NuGet packages from a specific network share. Replace placeholders with your actual paths and network share details.

```batch
C:\Path\To\Win2D> exportsample c:\Path\To\Samples /PackageSource:\\networkshare\path\to\nuget\directory
```

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

### Create Basic Image Effects in Win2D

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates the creation of common image effects like Gaussian blur, saturation adjustment, and 2D transformations. Ensure the source image is loaded before creating these effects.

```csharp
using Microsoft.Graphics.Canvas.Effects;

CanvasBitmap sourceImage;
GaussianBlurEffect blurEffect;
SaturationEffect saturationEffect;
Transform2DEffect transformEffect;

void CreateEffects()
{
    // Simple Gaussian blur
    blurEffect = new GaussianBlurEffect
    {
        Source = sourceImage,
        BlurAmount = 5.0f,
        BorderMode = EffectBorderMode.Soft
    };

    // Saturation adjustment
    saturationEffect = new SaturationEffect
    {
        Source = sourceImage,
        Saturation = 0.5f  // 0 = grayscale, 1 = original, 2 = oversaturated
    };

    // Transform effect (scale, rotate, translate)
    transformEffect = new Transform2DEffect
    {
        Source = sourceImage,
        TransformMatrix = Matrix3x2.CreateRotation((float)Math.PI / 6) *
                         Matrix3x2.CreateScale(1.5f)
    };
}
```

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

### Chain Multiple Image Effects in Win2D

Source: https://context7.com/microsoft/win2d/llms.txt

Illustrates how to chain multiple image effects together to create a complex visual pipeline. Effects are applied sequentially, with the output of one effect serving as the input for the next.

```csharp
// Chain multiple effects
ICanvasImage CreateEffectChain(CanvasBitmap source)
{
    // Apply contrast adjustment
    var contrast = new ContrastEffect
    {
        Source = source,
        Contrast = 0.5f
    };

    // Then apply vignette
    var vignette = new VignetteEffect
    {
        Source = contrast,
        Amount = 0.5f,
        Curve = 0.5f,
        Color = Colors.Black
    };

    // Finally apply slight blur
    var blur = new GaussianBlurEffect
    {
        Source = vignette,
        BlurAmount = 1.0f
    };

    return blur;
}
```

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

### Draw with Opacity Layer

Source: https://context7.com/microsoft/win2d/llms.txt

Shows how to create a simple layer with a specified opacity. Drawing operations within this layer will be rendered with the given transparency.

```csharp
// Simple opacity layer
using (ds.CreateLayer(0.5f))
{
    ds.FillRectangle(0, 0, 200, 200, Colors.Red);
    ds.FillCircle(100, 100, 80, Colors.Blue);
}
```

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

### Create and Draw Text Layout with Formatting

Source: https://context7.com/microsoft/win2d/llms.txt

Illustrates creating a CanvasTextLayout for advanced text control, applying formatting to specific text ranges, and performing hit testing. Requires an ICanvasResourceCreator.

```csharp
// Advanced text layout
void DrawTextLayout(CanvasDrawingSession ds, ICanvasResourceCreator creator)
{
    var format = new CanvasTextFormat
    {
        FontSize = 20,
        WordWrapping = CanvasWordWrapping.Wrap
    };

    string text = "Win2D provides powerful text rendering with full Unicode support, " +
                  "including complex scripts, ligatures, and OpenType features.";

    // Create text layout for advanced control
    var layout = new CanvasTextLayout(creator, text, format, 300, 200);

    // Apply formatting to specific ranges
    layout.SetFontSize(0, 5, 28);  // "Win2D" larger
    layout.SetFontWeight(0, 5, FontWeights.Bold);
    layout.SetColor(0, 5, Colors.Yellow);

    layout.SetFontStyle(50, 20, FontStyle.Italic);
    layout.SetUnderline(70, 15, true);

    // Draw the layout
    ds.DrawTextLayout(layout, 50, 50, Colors.White);

    // Get layout metrics
    var metrics = layout.LayoutBounds;
    ds.DrawRectangle(50, 50, (float)metrics.Width, (float)metrics.Height,
        Colors.Gray, 1);

    // Hit testing
    var hitTestResult = layout.HitTest(100, 80);
    if (hitTestResult.IsInside)
    {
        // Highlight character at hit position
        var charBounds = layout.GetCharacterRegions(
            hitTestResult.TextPosition, 1);
        foreach (var region in charBounds)
        {
            ds.FillRectangle(region.LayoutBounds,
                Color.FromArgb(64, 255, 255, 0));
        }
    }
}
```

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

### Load Bitmaps Asynchronously

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates loading CanvasBitmaps from different sources like app packages, URIs, streams, and with specific alpha modes and DPI settings.

```csharp
// Load from app package
    var bitmap1 = await CanvasBitmap.LoadAsync(sender, "Assets/image.png");
```

```csharp
// Load from URI
    var bitmap2 = await CanvasBitmap.LoadAsync(sender,
        new Uri("ms-appx:///Assets/photo.jpg"));
```

```csharp
// Load with specific DPI
    var bitmap3 = await CanvasBitmap.LoadAsync(sender, "Assets/icon.png", 96.0f);
```

```csharp
// Load with alpha mode
    var bitmap4 = await CanvasBitmap.LoadAsync(sender, "Assets/sprite.png",
        96.0f, CanvasAlphaMode.Premultiplied);
```

```csharp
// Load from stream
    var file = await StorageFile.GetFileFromApplicationUriAsync(
        new Uri("ms-appx:///Assets/data.png"));
    using (var stream = await file.OpenReadAsync())
    {
        var bitmap5 = await CanvasBitmap.LoadAsync(sender, stream);
    }
```

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

### Create and Record CanvasCommandList

Source: https://context7.com/microsoft/win2d/llms.txt

Instantiate a CanvasCommandList and record drawing operations within its drawing session. This is useful for deferred rendering.

```csharp
CanvasCommandList commandList;

void CreateCommandList(ICanvasResourceCreator creator)
{
    commandList = new CanvasCommandList(creator);

    using (var ds = commandList.CreateDrawingSession())
    {
        // Record drawing commands
        ds.Clear(Colors.Transparent);
        ds.FillCircle(100, 100, 50, Colors.Red);
        ds.FillCircle(150, 100, 50, Colors.Blue);
        ds.DrawText("Command List", 50, 170, Colors.White);
    }
}
```

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

### Render Text Using Different Brushes

Source: https://context7.com/microsoft/win2d/llms.txt

Shows how to draw text using various brush types, including solid color, linear gradient, and radial gradient brushes. Ensure brushes are disposed of properly after use.

```csharp
// Using brushes for text
void DrawTextWithBrushes(CanvasDrawingSession ds, ICanvasResourceCreator creator)
{
    var format = new CanvasTextFormat { FontSize = 48, FontWeight = FontWeights.Bold };

    // Solid color brush
    using (var solidBrush = new CanvasSolidColorBrush(creator, Colors.Red))
    {
        ds.DrawText("Solid Brush", 50, 50, solidBrush, format);
    }

    // Linear gradient brush
    var stops = new CanvasGradientStop[]
    {
        new CanvasGradientStop { Position = 0, Color = Colors.Red },
        new CanvasGradientStop { Position = 0.5f, Color = Colors.Yellow },
        new CanvasGradientStop { Position = 1, Color = Colors.Blue }
    };

    using (var gradientBrush = new CanvasLinearGradientBrush(creator, stops))
    {
        gradientBrush.StartPoint = new Vector2(50, 150);
        gradientBrush.EndPoint = new Vector2(400, 150);
        ds.DrawText("Gradient Text", 50, 120, gradientBrush, format);
    }

    // Radial gradient brush
    using (var radialBrush = new CanvasRadialGradientBrush(creator, stops))
    {
        radialBrush.Center = new Vector2(200, 220);
        radialBrush.RadiusX = 150;
        radialBrush.RadiusY = 50;
        ds.DrawText("Radial Gradient", 50, 200, radialBrush, format);
    }
}
```

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

### Trim CanvasDevice Resources

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates how to trim device resources using the Trim() method. This should be called on application suspend to release unused GPU memory.

```csharp
// Trim device resources (call on app suspend)
void OnSuspending(CanvasDevice device)
{
    device.Trim();
}
```

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

### Draw Basic and Formatted Text with CanvasTextFormat

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates simple text drawing and text drawing with advanced formatting options using CanvasTextFormat. Ensure CanvasTextFormat properties are set before drawing.

```csharp
using Microsoft.Graphics.Canvas.Text;

void DrawText(CanvasDrawingSession ds)
{
    // Simple text drawing
    ds.DrawText("Hello World!", 100, 100, Colors.White);

    // Text with format options
    var format = new CanvasTextFormat
    {
        FontFamily = "Segoe UI",
        FontSize = 32,
        FontWeight = FontWeights.Bold,
        FontStyle = FontStyle.Italic,
        HorizontalAlignment = CanvasHorizontalAlignment.Center,
        VerticalAlignment = CanvasVerticalAlignment.Center,
        WordWrapping = CanvasWordWrapping.Wrap
    };

    ds.DrawText("Formatted Text", new Rect(0, 200, 400, 100), Colors.Yellow, format);

    // Different font families
    var fonts = new[] { "Arial", "Times New Roman", "Courier New", "Comic Sans MS" };
    for (int i = 0; i < fonts.Length; i++)
    {
        var f = new CanvasTextFormat { FontFamily = fonts[i], FontSize = 24 };
        ds.DrawText($"Font: {fonts[i]}", 50, 300 + i * 40, Colors.White, f);
    }
}
```

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

### Save Bitmaps Asynchronously

Source: https://context7.com/microsoft/win2d/llms.txt

Illustrates saving a CanvasBitmap to a file in PNG format or JPEG format with specified quality.

```csharp
// Save as PNG
        await bitmap.SaveAsync(stream, CanvasBitmapFileFormat.Png);
```

```csharp
// Or save as JPEG with quality
        // await bitmap.SaveAsync(stream, CanvasBitmapFileFormat.Jpeg, 0.9f);
```

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

### Draw with Clipping Layer (Geometry)

Source: https://context7.com/microsoft/win2d/llms.txt

Illustrates creating a layer that clips drawing operations to a specified CanvasGeometry. Only the parts of the drawing that fall within the geometry will be visible.

```csharp
// Clipping layer with geometry
var clipGeometry = CanvasGeometry.CreateCircle(creator, 400, 100, 80);
using (ds.CreateLayer(1.0f, clipGeometry))
{
    // This drawing is clipped to the circle
    ds.FillRectangle(300, 0, 200, 200, Colors.Green);
    ds.DrawText("Clipped!", 350, 90, Colors.White);
}
```

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

### Draw with Brush Mask Layer

Source: https://context7.com/microsoft/win2d/llms.txt

Shows how to use a brush, specifically a linear gradient brush, as a mask for a layer's opacity. This allows for gradient-based transparency effects.

```csharp
// Layer with brush mask (gradient opacity)
var stops = new CanvasGradientStop[]
{
    new CanvasGradientStop { Position = 0, Color = Color.FromArgb(255, 0, 0, 0) },
    new CanvasGradientStop { Position = 1, Color = Color.FromArgb(0, 0, 0, 0) }
};
using (var maskBrush = new CanvasLinearGradientBrush(creator, stops))
{
    maskBrush.StartPoint = new Vector2(300, 250);
    maskBrush.EndPoint = new Vector2(500, 250);

    using (ds.CreateLayer(maskBrush))
    {
        ds.FillRectangle(300, 250, 200, 150, Colors.Orange);
    }
}
```

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

### Combine Geometries using Boolean Operations

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates combining two circles using Union, Intersection, Exclude, and XOR operations. Requires a CanvasDrawingSession and an ICanvasResourceCreator.

```csharp
// Combine geometries
void CombineGeometries(CanvasDrawingSession ds, ICanvasResourceCreator creator)
{
    var circle1 = CanvasGeometry.CreateCircle(creator, 100, 100, 60);
    var circle2 = CanvasGeometry.CreateCircle(creator, 150, 100, 60);

    // Union
    var union = circle1.CombineWith(circle2, Matrix3x2.Identity,
        CanvasGeometryCombine.Union);
    ds.FillGeometry(union, 0, 0, Colors.Blue);

    // Intersection
    var intersect = circle1.CombineWith(circle2, Matrix3x2.Identity,
        CanvasGeometryCombine.Intersect);
    ds.FillGeometry(intersect, 200, 0, Colors.Green);

    // Exclude
    var exclude = circle1.CombineWith(circle2, Matrix3x2.Identity,
        CanvasGeometryCombine.Exclude);
    ds.FillGeometry(exclude, 400, 0, Colors.Red);

    // XOR
    var xor = circle1.CombineWith(circle2, Matrix3x2.Identity,
        CanvasGeometryCombine.Xor);
    ds.FillGeometry(xor, 0, 200, Colors.Purple);
}
```

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

### Draw with Clipping Layer (Rectangle)

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates creating a layer that clips drawing operations to a specified Rect. Content outside this rectangle will not be rendered.

```csharp
// Layer with rectangle clip
using (ds.CreateLayer(0.8f, new Rect(50, 250, 200, 150)))
{
    ds.FillRectangle(0, 200, 300, 250, Colors.Purple);
}
```

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

### Create Bitmaps from Pixel Data

Source: https://context7.com/microsoft/win2d/llms.txt

Shows how to create CanvasBitmaps programmatically from arrays of Color objects or byte arrays representing pixel data in BGRA format.

```csharp
// Create from Color array
    Color[] pixels = new Color[width * height];
    for (int y = 0; y < height; y++)
    {
        for (int x = 0; x < width; x++)
        {
            // Create gradient pattern
            pixels[y * width + x] = Color.FromArgb(255,
                (byte)(x * 255 / width),
                (byte)(y * 255 / height),
                128);
        }
    }
    var colorBitmap = CanvasBitmap.CreateFromColors(sender, pixels, width, height);
```

```csharp
// Create from byte array (BGRA format)
    byte[] bytes = new byte[width * height * 4];
    for (int i = 0; i < bytes.Length; i += 4)
    {
        bytes[i] = 255;     // Blue
        bytes[i + 1] = 128; // Green
        bytes[i + 2] = 64;  // Red
        bytes[i + 3] = 255; // Alpha
    }
    var byteBitmap = CanvasBitmap.CreateFromBytes(sender, bytes, width, height,
        DirectXPixelFormat.B8G8R8A8UIntNormalized);
```

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

### Implement Game Loop Logic with CanvasAnimatedControl

Source: https://context7.com/microsoft/win2d/llms.txt

C# code for handling game logic updates and drawing within a CanvasAnimatedControl. Includes ball movement, bouncing, and FPS display.

```csharp
using System.Numerics;

public sealed partial class GamePage : Page
{
    Vector2 ballPosition = new Vector2(100, 100);
    Vector2 ballVelocity = new Vector2(300, 200);
    const float ballRadius = 20;

    void AnimatedCanvas_CreateResources(CanvasAnimatedControl sender,
        CanvasCreateResourcesEventArgs args)
    {
        // Initialize game resources here
    }

    void AnimatedCanvas_Update(ICanvasAnimatedControl sender,
        CanvasAnimatedUpdateEventArgs args)
    {
        // Update game logic - called at fixed intervals (60 FPS by default)
        float dt = (float)args.Timing.ElapsedTime.TotalSeconds;

        // Move ball
        ballPosition += ballVelocity * dt;

        // Bounce off walls
        var size = sender.Size;
        if (ballPosition.X - ballRadius < 0 || ballPosition.X + ballRadius > size.Width)
            ballVelocity.X = -ballVelocity.X;
        if (ballPosition.Y - ballRadius < 0 || ballPosition.Y + ballRadius > size.Height)
            ballVelocity.Y = -ballVelocity.Y;

        // Clamp position
        ballPosition.X = Math.Clamp(ballPosition.X, ballRadius, (float)size.Width - ballRadius);
        ballPosition.Y = Math.Clamp(ballPosition.Y, ballRadius, (float)size.Height - ballRadius);
    }

    void AnimatedCanvas_Draw(ICanvasAnimatedControl sender,
        CanvasAnimatedDrawEventArgs args)
    {
        var ds = args.DrawingSession;

        // Draw the ball
        ds.FillCircle(ballPosition, ballRadius, Colors.Red);
        ds.DrawCircle(ballPosition, ballRadius, Colors.White, 2);

        // Show FPS
        ds.DrawText($
```

```csharp
FPS: {1.0 / args.Timing.ElapsedTime.TotalSeconds:F1}",
            10, 10, Colors.Yellow);
    }
}
```

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

### Handle CanvasDevice Lost Events

Source: https://context7.com/microsoft/win2d/llms.txt

Sets up an event handler for the DeviceLost event on a CanvasDevice. This is crucial for recreating resources when the GPU device is lost and needs to be re-initialized.

```csharp
// Device lost handling
void SetupDeviceLostHandling(CanvasDevice device)
{
    device.DeviceLost += (sender, args) =>
    {
        // Device was lost, need to recreate resources
        Debug.WriteLine($"Device lost! Reason: {args.Message}");

        // Recreate the device
        var newDevice = CanvasDevice.GetSharedDevice();

        // Recreate all resources on the new device
        RecreateResources(newDevice);
    };
}
```

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

### Draw Bitmaps

Source: https://context7.com/microsoft/win2d/llms.txt

Demonstrates various ways to draw a CanvasBitmap onto a CanvasDrawingSession, including different positions, scaling, source rectangles, opacity, and interpolation modes.

```csharp
// Draw at position
    ds.DrawImage(bitmap, 0, 0);
    ds.DrawImage(bitmap, new Vector2(100, 100));
```

```csharp
// Draw scaled to destination rectangle
    ds.DrawImage(bitmap, new Rect(200, 0, 150, 100));
```

```csharp
// Draw with source rectangle (sprite sheet)
    ds.DrawImage(bitmap, new Vector2(0, 200),
        new Rect(0, 0, 32, 32)); // Source rect
```

```csharp
// Draw with opacity
    ds.DrawImage(bitmap, new Vector2(100, 200),
        bitmap.Bounds, 0.5f); // 50% opacity
```

```csharp
// Draw with interpolation mode
    ds.DrawImage(bitmap, new Rect(200, 200, 200, 200), bitmap.Bounds,
        1.0f, CanvasImageInterpolation.NearestNeighbor);
```

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

### Create a Curved Path with Bezier and Arc

Source: https://context7.com/microsoft/win2d/llms.txt

Constructs a path with quadratic and cubic Bezier curves, as well as an arc segment, using CanvasPathBuilder. The path is left open.

```csharp
// Create path with curves
CanvasGeometry CreateCurvedPath(ICanvasResourceCreator creator)
{
    var pathBuilder = new CanvasPathBuilder(creator);

    pathBuilder.BeginFigure(0, 100);

    // Quadratic bezier curve
    pathBuilder.AddQuadraticBezier(
        new Vector2(50, 0),    // Control point
        new Vector2(100, 100)  // End point
    );

    // Cubic bezier curve
    pathBuilder.AddCubicBezier(
        new Vector2(150, 0),   // Control point 1
        new Vector2(200, 200), // Control point 2
        new Vector2(250, 100)  // End point
    );

    // Arc
    pathBuilder.AddArc(
        new Vector2(350, 100), // End point
        50, 50,                // Radius X, Y
        0,                     // Rotation angle
        CanvasSweepDirection.Clockwise,
        CanvasArcSize.Small
    );

    pathBuilder.EndFigure(CanvasFigureLoop.Open);

    return CanvasGeometry.CreatePath(pathBuilder);
}
```

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

### Perform Geometry Operations

Source: https://context7.com/microsoft/win2d/llms.txt

Illustrates various geometry operations including stroking, simplifying, transforming, computing bounds and area, and hit testing. Requires an ICanvasResourceCreator.

```csharp
// Geometry operations
void GeometryOperations(ICanvasResourceCreator creator)
{
    var geometry = CanvasGeometry.CreateRectangle(creator, 0, 0, 100, 100);

    // Get stroked outline
    var stroked = geometry.Stroke(10);

    // Simplify to lines only
    var simplified = geometry.Simplify(CanvasGeometrySimplification.Lines);

    // Transform geometry
    var transformed = geometry.Transform(
        Matrix3x2.CreateRotation((float)Math.PI / 4, new Vector2(50, 50)));

    // Compute bounds
    var bounds = geometry.ComputeBounds();

    // Compute area
    var area = geometry.ComputeArea();

    // Hit testing
    bool containsPoint = geometry.FillContainsPoint(new Vector2(50, 50));
    bool strokeContains = geometry.StrokeContainsPoint(new Vector2(0, 50), 5);
}
```

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

### Configure CanvasAnimatedControl for Game Loop Animation

Source: https://context7.com/microsoft/win2d/llms.txt

Set up CanvasAnimatedControl in XAML to manage a game loop with Update and Draw events. Configure fixed timestep and resource creation.

```xml
<canvas:CanvasAnimatedControl
    x:Name="animatedCanvas"
    CreateResources="AnimatedCanvas_CreateResources"
    Update="AnimatedCanvas_Update"
    Draw="AnimatedCanvas_Draw"
    TargetElapsedTime="0:0:0.016"
    IsFixedTimeStep="True"
    ClearColor="Black"/>
```

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

### Playback CanvasCommandList and Use as Effect Source

Source: https://context7.com/microsoft/win2d/llms.txt

Draw a CanvasCommandList to a CanvasDrawingSession and use it as the source for a visual effect like GaussianBlurEffect. Requires Win2D effects pipeline.

```csharp
void DrawCommandList(CanvasDrawingSession ds)
{
    // Play back recorded commands
    ds.DrawImage(commandList, 0, 0);

    // Can be used as effect source
    var blur = new GaussianBlurEffect
    {
        Source = commandList,
        BlurAmount = 5
    };
    ds.DrawImage(blur, 300, 0);
}
```

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

### Draw Basic Shapes and Apply Transformations with CanvasDrawingSession

Source: https://context7.com/microsoft/win2d/llms.txt

Utilize CanvasDrawingSession to render lines, rectangles, ellipses, and circles. Demonstrates clearing the canvas, applying transformations, and controlling blend modes.

```csharp
void Canvas_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
    var ds = args.DrawingSession;

    // Clear the canvas
    ds.Clear(Colors.Navy);

    // Draw lines
    ds.DrawLine(0, 0, 200, 200, Colors.White);
    ds.DrawLine(new Vector2(0, 200), new Vector2(200, 0), Colors.Yellow, 3);

    // Draw rectangles
    ds.DrawRectangle(50, 50, 100, 80, Colors.Red);
    ds.FillRectangle(new Rect(160, 50, 100, 80), Colors.Green);

    // Draw rounded rectangles
    ds.DrawRoundedRectangle(50, 150, 100, 80, 10, 10, Colors.Cyan, 2);
    ds.FillRoundedRectangle(160, 150, 100, 80, 15, 15, Colors.Magenta);

    // Draw ellipses and circles
    ds.DrawEllipse(100, 300, 50, 30, Colors.Orange, 3);
    ds.FillCircle(new Vector2(220, 300), 40, Colors.Purple);

    // Apply transformations
    var previousTransform = ds.Transform;
    ds.Transform = Matrix3x2.CreateRotation((float)Math.PI / 4, new Vector2(400, 200));
    ds.FillRectangle(350, 150, 100, 100, Colors.LimeGreen);
    ds.Transform = previousTransform; // Reset to default

    // Set blend mode
    ds.Blend = CanvasBlend.Add;
    ds.FillCircle(300, 300, 50, Color.FromArgb(128, 255, 0, 0));
    ds.FillCircle(340, 300, 50, Color.FromArgb(128, 0, 255, 0));
    ds.Blend = CanvasBlend.SourceOver; // Reset to default

    // Antialiasing control
    ds.Antialiasing = CanvasAntialiasing.Aliased;
    ds.DrawLine(0, 400, 500, 400, Colors.White);
    ds.Antialiasing = CanvasAntialiasing.Antialiased;
}
```

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

### Create a Complex Star Path

Source: https://context7.com/microsoft/win2d/llms.txt

Builds a complex star shape using CanvasPathBuilder by adding lines sequentially. The path is then closed and converted into a CanvasGeometry.

```csharp
// Create complex paths with CanvasPathBuilder
CanvasGeometry CreateCustomPath(ICanvasResourceCreator creator)
{
    var pathBuilder = new CanvasPathBuilder(creator);

    // Star shape
    pathBuilder.BeginFigure(100, 0);
    pathBuilder.AddLine(130, 70);
    pathBuilder.AddLine(200, 70);
    pathBuilder.AddLine(145, 115);
    pathBuilder.AddLine(165, 190);
    pathBuilder.AddLine(100, 145);
    pathBuilder.AddLine(35, 190);
    pathBuilder.AddLine(55, 115);
    pathBuilder.AddLine(0, 70);
    pathBuilder.AddLine(70, 70);
    pathBuilder.EndFigure(CanvasFigureLoop.Closed);

    return CanvasGeometry.CreatePath(pathBuilder);
}
```

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

### Efficient Sprite Rendering with CanvasSpriteBatch

Source: https://context7.com/microsoft/win2d/llms.txt

Optimizes drawing many sprites from the same source bitmap. Check for support and use CanvasSpriteSortMode for performance. Supports tinting, rotation, origin, and scaling.

```csharp
CanvasBitmap spriteSheet;

void DrawSprites(CanvasDrawingSession ds)
{
    // Check if sprite batch is supported
    if (!CanvasSpriteBatch.IsSupported(ds.Device))
        return;

    // Create sprite batch with sorting for better performance
    using (var spriteBatch = ds.CreateSpriteBatch(CanvasSpriteSortMode.Bitmap))
    {
        // Draw many sprites efficiently
        for (int i = 0; i < 1000; i++)
        {
            float x = (i % 50) * 20;
            float y = (i / 50) * 20;

            // Source rectangle from sprite sheet (32x32 sprites)
            var sourceRect = new Rect((i % 4) * 32, 0, 32, 32);

            // Draw sprite with position, source rect, tint, rotation, origin, scale
            spriteBatch.Draw(
                spriteSheet,
                new Vector2(x, y),
                sourceRect,
                Colors.White,
                0,                          // Rotation
                new Vector2(16, 16),        // Origin
                new Vector2(1, 1),          // Scale
                CanvasSpriteFlip.None
            );
        }
    }
}

// Particle system using sprite batch
class Particle
{
    public Vector2 Position;
    public Vector2 Velocity;
    public float Rotation;
    public float Scale;
    public Color Tint;
    public float Life;
}

void DrawParticles(CanvasDrawingSession ds, List<Particle> particles,
    CanvasBitmap particleTexture)
{
    using (var batch = ds.CreateSpriteBatch())
    {
        foreach (var p in particles)
        {
            var tint = Color.FromArgb(
                (byte)(p.Tint.A * p.Life),
                p.Tint.R, p.Tint.G, p.Tint.B);

            batch.Draw(
                particleTexture,
                p.Position,
                particleTexture.Bounds,
                tint,
                p.Rotation,
                new Vector2(particleTexture.Size.Width / 2,
                           particleTexture.Size.Height / 2),
                new Vector2(p.Scale, p.Scale),
                CanvasSpriteFlip.None
            );
        }
    }
}
```

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

### Draw and Fill Primitive Geometries

Source: https://context7.com/microsoft/win2d/llms.txt

Creates and draws various primitive geometric shapes like rectangles, rounded rectangles, ellipses, and circles. Requires a CanvasDrawingSession and an ICanvasResourceCreator.

```csharp
using Microsoft.Graphics.Canvas.Geometry;

void DrawGeometry(CanvasDrawingSession ds, ICanvasResourceCreator creator)
{
    // Create primitive geometries
    var rectangle = CanvasGeometry.CreateRectangle(creator, 50, 50, 100, 80);
    var roundedRect = CanvasGeometry.CreateRoundedRectangle(creator,
        200, 50, 100, 80, 15, 15);
    var ellipse = CanvasGeometry.CreateEllipse(creator, 400, 90, 60, 40);
    var circle = CanvasGeometry.CreateCircle(creator, 550, 90, 50);

    // Draw and fill geometries
    ds.DrawGeometry(rectangle, Colors.Red, 2);
    ds.FillGeometry(roundedRect, Colors.Blue);
    ds.DrawGeometry(ellipse, Colors.Green, 3);
    ds.FillGeometry(circle, Colors.Purple);

    // Create polygon
    Vector2[] points = {
        new Vector2(100, 200),
        new Vector2(150, 300),
        new Vector2(50, 300)
    };
    var triangle = CanvasGeometry.CreatePolygon(creator, points);
    ds.FillGeometry(triangle, Colors.Orange);
}
```

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

### Generate Procedural Checkerboard Texture

Source: https://context7.com/microsoft/win2d/llms.txt

Create a procedural texture, such as a checkerboard, by drawing onto a CanvasRenderTarget. This method is suitable for generating dynamic or repeating patterns.

```csharp
// Generate procedural texture
CanvasRenderTarget CreateCheckerboardTexture(ICanvasResourceCreator creator,
    int size, int tileSize)
{
    var texture = new CanvasRenderTarget(creator, size, size, 96);

    using (var ds = texture.CreateDrawingSession())
    {
        ds.Clear(Colors.White);

        for (int y = 0; y < size; y += tileSize)
        {
            for (int x = 0; x < size; x += tileSize)
            {
                if ((x / tileSize + y / tileSize) % 2 == 0)
                {
                    ds.FillRectangle(x, y, tileSize, tileSize, Colors.Gray);
                }
            }
        }
    }

    return texture;
}
```

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

### Create CanvasRenderTarget with Specific Size

Source: https://context7.com/microsoft/win2d/llms.txt

Instantiate a CanvasRenderTarget with a specified width and height. This is useful for creating bitmaps for offscreen drawing.

```csharp
CanvasRenderTarget renderTarget;

void CreateRenderTarget(CanvasControl sender)
{
    // Create render target with specific size
    renderTarget = new CanvasRenderTarget(sender, 400, 300);

    // Or with specific DPI and format
    renderTarget = new CanvasRenderTarget(sender.Device, 400, 300, 96,
        DirectXPixelFormat.B8G8R8A8UIntNormalized,
        CanvasAlphaMode.Premultiplied);
}
```

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

### Composite Multiple Images in Win2D

Source: https://context7.com/microsoft/win2d/llms.txt

Combines two images using the CompositeEffect with the 'SourceOver' mode. This is useful for layering images, such as placing a foreground image on top of a background.

```csharp
// Composite multiple images
CompositeEffect CreateComposite(CanvasBitmap background, CanvasBitmap foreground)
{
    return new CompositeEffect
    {
        Sources = { background, foreground },
        Mode = CanvasComposite.SourceOver
    };
}
```

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

### Create Sepia Tone Effect using ColorMatrixEffect

Source: https://context7.com/microsoft/win2d/llms.txt

Applies a sepia tone to an image using the ColorMatrixEffect. This effect allows for advanced color manipulation by defining a custom color transformation matrix.

```csharp
// Color matrix effect for advanced color manipulation
ColorMatrixEffect CreateSepiaEffect(ICanvasImage source)
{
    return new ColorMatrixEffect
    {
        Source = source,
        ColorMatrix = new Matrix5x4
        {
            M11 = 0.393f, M12 = 0.349f, M13 = 0.272f, M14 = 0,
            M21 = 0.769f, M22 = 0.686f, M23 = 0.534f, M24 = 0,
            M31 = 0.189f, M32 = 0.168f, M33 = 0.131f, M34 = 0,
            M41 = 0,      M42 = 0,      M43 = 0,      M44 = 1,
            M51 = 0,      M52 = 0,      M53 = 0,      M54 = 0
        }
    };
}
```

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

### Win2D Event Handlers for Drawing

Source: https://context7.com/microsoft/win2d/llms.txt

Implement event handlers for CanvasControl to load resources asynchronously and perform drawing operations. Ensure proper cleanup by removing the control from the visual tree when the page is unloaded.

```csharp
using Microsoft.Graphics.Canvas;
using Microsoft.Graphics.Canvas.UI;
using Microsoft.Graphics.Canvas.UI.Xaml;
using Windows.UI;

public sealed partial class MainPage : Page
{
    CanvasBitmap backgroundImage;

    public MainPage()
    {
        this.InitializeComponent();
    }

    void Canvas_CreateResources(CanvasControl sender, CanvasCreateResourcesEventArgs args)
    {
        // Track async resource loading
        args.TrackAsyncAction(LoadResourcesAsync(sender).AsAsyncAction());
    }

    async Task LoadResourcesAsync(CanvasControl sender)
    {
        // Load bitmap from app package
        backgroundImage = await CanvasBitmap.LoadAsync(sender, "Assets/background.png");
    }

    void Canvas_Draw(CanvasControl sender, CanvasDrawEventArgs args)
    {
        var ds = args.DrawingSession;

        // Draw loaded image
        if (backgroundImage != null)
            ds.DrawImage(backgroundImage, 0, 0);

        // Draw shapes
        ds.DrawEllipse(150, 100, 80, 40, Colors.Black, 3);
        ds.FillRectangle(50, 50, 100, 60, Colors.Blue);

        // Draw text
        ds.DrawText("Hello Win2D!", 100, 150, Colors.White);
    }

    void Page_Unloaded(object sender, RoutedEventArgs e)
    {
        // Required cleanup to avoid memory leaks
        canvasControl.RemoveFromVisualTree();
        canvasControl = null;
    }
```

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

### Draw Image Effects on Canvas

Source: https://context7.com/microsoft/win2d/llms.txt

Renders the output of created image effects onto the drawing session. Effects can be drawn as full images or to specific rectangles on the canvas.

```csharp
// Draw effects
void Canvas_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
    var ds = args.DrawingSession;

    // Draw effect output like any image
    ds.DrawImage(blurEffect, 0, 0);
    ds.DrawImage(saturationEffect, 300, 0);

    // Effects can be drawn to specific rectangles
    ds.DrawImage(transformEffect, new Rect(0, 300, 200, 200));
}
```

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

### Draw Cached CanvasRenderTarget Multiple Times

Source: https://context7.com/microsoft/win2d/llms.txt

Efficiently draw a pre-rendered CanvasRenderTarget onto the screen multiple times using DrawImage. This leverages the offscreen bitmap for performance.

```csharp
void Canvas_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
    var ds = args.DrawingSession;

    // Draw the cached render target multiple times efficiently
    ds.DrawImage(renderTarget, 0, 0);
    ds.DrawImage(renderTarget, 420, 0);
    ds.DrawImage(renderTarget, 0, 320);
    ds.DrawImage(renderTarget, 420, 320);
}
```

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

### C# Win2D Draw Event Handler

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/README.md

Implement this C# method to handle the Draw event for a CanvasControl. It demonstrates drawing an ellipse and text using the CanvasDrawEventArgs.

```cs
void canvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
    args.DrawingSession.DrawEllipse(155, 115, 80, 30, Colors.Black, 3);
    args.DrawingSession.DrawText("Hello, world!", 100, 100, Colors.Yellow);
}
```

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

### Draw Complex Content to CanvasRenderTarget

Source: https://context7.com/microsoft/win2d/llms.txt

Obtain a drawing session from a CanvasRenderTarget to draw complex graphics offscreen. Ensure the drawing session is disposed to finalize the drawing.

```csharp
void DrawToRenderTarget()
{
    // Create a drawing session for the render target
    using (var ds = renderTarget.CreateDrawingSession())
    {
        ds.Clear(Colors.Transparent);

        // Draw complex content once
        for (int i = 0; i < 100; i++)
        {
            float x = i * 4;
            ds.DrawLine(x, 0, x, 300, Colors.Blue, 1);
        }

        ds.FillCircle(200, 150, 100, Colors.Red);
        ds.DrawText("Cached Content", 100, 140, Colors.White);
    }
    // Drawing session must be closed before using render target
}
```

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

### Blend Two Images in Win2D

Source: https://context7.com/microsoft/win2d/llms.txt

Blends two images using the BlendEffect with the 'Multiply' mode. This effect is suitable for combining images where the resulting color is a product of the input colors.

```csharp
// Blend two images
BlendEffect CreateBlend(ICanvasImage background, ICanvasImage foreground)
{
    return new BlendEffect
    {
        Background = background,
        Foreground = foreground,
        Mode = BlendEffectMode.Multiply
    };
}
```

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

### C++/WinRT Win2D Draw Event Handler

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/README.md

This C++/WinRT method implements the Draw event for a CanvasControl. It shows how to draw an ellipse and text using the CanvasDrawEventArgs with WinRT syntax.

```cpp
void MainPage::CanvasControl_Draw(CanvasControl const& sender, CanvasDrawEventArgs const& args)
{
    args.DrawingSession().DrawEllipse(155, 115, 80, 30, Colors::Black(), 3);
    args.DrawingSession().DrawText(L"Hello, world!", 100, 100, Colors::Yellow());
}
```

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

### C++/CX Win2D Draw Event Handler

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/README.md

This C++/CX method handles the Draw event for a CanvasControl, similar to the C# version. It draws an ellipse and text using the CanvasDrawEventArgs.

```cpp
void MainPage::CanvasControl_Draw(CanvasControl^ sender, CanvasDrawEventArgs^ args)
{
    args->DrawingSession->DrawEllipse(155, 115, 80, 30, Colors::Black, 3);
    args->DrawingSession->DrawText("Hello, world!", 100, 100, Colors::Yellow);
}
```

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

### VB.NET Win2D Draw Event Handler

Source: https://github.com/microsoft/win2d/blob/winappsdk/main/README.md

This VB.NET method handles the Draw event for a CanvasControl. It demonstrates drawing an ellipse and text using the CanvasDrawEventArgs.

```vb
Sub canvasControl_Draw(sender As CanvasControl, args As CanvasDrawEventArgs)
    args.DrawingSession.DrawEllipse(155, 115, 80, 30, Colors.Black, 3)
    args.DrawingSession.DrawText("Hello, world!", 100, 100, Colors.Yellow)
End Sub
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.