Antialiasing in C# | Antialiasing in Computer Graphics using C#

Antialiasing-in-CSharp.md

Learn how to use Anti-aliasing with lines, curves, and text in C# : https://blog.aspose.com/drawing/antialiasing-in-csharp/

The following topics are covered in this article:

1. C# Computer Graphics Antialiasing API
2. Antialiasing with Lines and Curves
3. Antialiasing with Text

Antialiasing-in-CSharp_WithLinesAndCurves.cs

// This code example demonstrates how to implement antialiasing with lines and curves.
// Create Bitmap
Bitmap bitmap = new Bitmap(500, 500, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

// Initialize the Graphics object
Graphics graphics = Graphics.FromImage(bitmap);

// Set the smoothin mode
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
graphics.Clear(Color.White);

// Initialize a Pen
Pen pen = new Pen(Color.Black, 5);

// Draw an Ellipse
graphics.DrawEllipse(pen, 10, 10, 980, 780);

// Draw a Curve
graphics.DrawCurve(pen, new Point[] { new Point(10, 700), new Point(250, 500), new Point(500, 10), new Point(750, 500), new Point(990, 700) });

// Draw a Line
graphics.DrawLine(pen, 20, 20, 980, 780);

// Save the image
bitmap.Save("C:\\Files\\Antialiasing.png");

Antialiasing-in-CSharp_WithText.cs

// This code example demonstrates how to implement antialiasing with lines and curves.
// Create Bitmap
Bitmap bitmap = new Bitmap(500, 500, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);

// Initialize the Graphics object
Graphics graphics = Graphics.FromImage(bitmap);

// Set the smoothin mode
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
graphics.Clear(Color.White);

// Define Font family
FontFamily fontFamily = new FontFamily("Arial");

// Define Font
Font font = new Font(fontFamily, 30, FontStyle.Regular, GraphicsUnit.Pixel);

// Initialize a solid brush
SolidBrush solidBrush = new SolidBrush(Color.FromArgb(255, 0, 0, 255));

// Draw a string with text rendering hint as SingleBitPerPixel
graphics.TextRenderingHint = TextRenderingHint.SingleBitPerPixel;
graphics.DrawString("This is Single Bit Per Pixel String!", font, solidBrush, new PointF(10, 10));

// Draw a string with text rendering hint as AntiAlias
graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
graphics.DrawString("This is Anti Alias String!", font, solidBrush, new PointF(10, 60));

// Save the image
bitmap.Save("C:\\Files\\AntialiasingText.png");