Mathematics SET in Graphics view

Description :


Normally We are using following the words in SET Mathematics

1. Replace
2. Intersect
3. Union
4. Xor
5. Exclude
6. Complement

Following is the namespace used


using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;


The following code will explain the SET Mathematics clearly

namespace WindowsApplication1
{
public partial class Form1 : Form
{
string stringCaption = "CombineMode = ";
MenuItem MenuCombineMode;

protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
public Form1()
{
InitializeComponent();
ResizeRedraw = true;

Menu = new MainMenu();
Menu.MenuItems.Add("&CombineMode");

EventHandler ehClick = new EventHandler(MenuCombineModeOnClick);

for (int i = 0; i < 6; i++)
{
MenuItem MyMI = new MenuItem("&" + (CombineMode)i);
MyMI.Click += ehClick;
MyMI.RadioCheck = true;

Menu.MenuItems[0].MenuItems.Add(MyMI);
}
MenuCombineMode = Menu.MenuItems[0].MenuItems[0];
MenuCombineMode.Checked = true;
}
void MenuCombineModeOnClick(object obj, EventArgs ea)
{
MenuCombineMode.Checked = false;
MenuCombineMode = (MenuItem) obj;
MenuCombineMode.Checked = true;

Text = stringCaption + (CombineMode)MenuCombineMode.Index;
Invalidate();
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
GraphicsPath path = new GraphicsPath();
path.AddEllipse(0, 0, 2 * cx / 3, cy);
grfx.SetClip(path);

path.Reset();
path.AddEllipse(cx / 3, 0, 2 * cx / 3, cy);
grfx.SetClip(path, (CombineMode)MenuCombineMode.Index);

grfx.FillRectangle(Brushes.Red, 0, 0, cx, cy);
}
}
}




By
Nathan


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