Mega Code Archive

 

Categories / C# Tutorial / 2D Graphics

 

Create an irregular Region add a circle to the region

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Text; using System.Windows.Forms; public class Form1 : Form {     protected override void OnPaint(PaintEventArgs e) {         Graphics g = e.Graphics;         g.FillRectangle(Brushes.White, this.ClientRectangle);         Region reg = new Region();         reg.MakeEmpty();         GraphicsPath gp = new GraphicsPath();         gp.AddEllipse(10, 10, 50, 50);         reg.Union(gp);         gp.Reset();         gp.AddLine(40, 40, 70, 10);         gp.AddLine(70, 10, 100, 40);         gp.CloseFigure();         reg.Union(gp);         reg.Union(new Rectangle(40, 50, 60, 60));         g.SetClip(reg, CombineMode.Replace);         g.FillRectangle(Brushes.Green, this.ClientRectangle);         gp.Dispose();         reg.Dispose();     }     public static void Main() {         Application.Run(new Form1());     } }