Csharp/CSharp Tutorial/2D/Point

Add point and size and copy to point

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
           Size sz = new Size(12, 12);
           Point pt = new Point(20, 20);
           pt = pt+sz;
           MessageBox.Show("Addition :"+ pt.ToString());
           pt = pt-sz;
           MessageBox.Show("Subtraction :"+ pt.ToString());
           PointF ptf = pt;
           MessageBox.Show("PointF :"+ pt.ToString());
           sz = (Size)pt;
           MessageBox.Show("Size :"+ sz.Width.ToString() 
               +","+ sz.Height.ToString() );
    }

}</source>

Concert Point to Size

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
           Size sz = new Size(12, 12);
           Point pt = new Point(20, 20);
           pt = pt+sz;
           MessageBox.Show("Addition :"+ pt.ToString());
           pt = pt-sz;
           MessageBox.Show("Subtraction :"+ pt.ToString());
           PointF ptf = pt;
           MessageBox.Show("PointF :"+ pt.ToString());
           sz = (Size)pt;
           MessageBox.Show("Size :"+ sz.Width.ToString() 
               +","+ sz.Height.ToString() );
    }

}</source>

Create and offset a point

<source lang="csharp">using System; using System.Drawing; class MainClass {

 public static int Main(string[] args)
 {
   
   Point pt = new Point(100, 72);
   Console.WriteLine(pt);
   pt.Offset(20, 20);
   Console.WriteLine(pt);
 
   return 0;
 }

}</source>

{X=100,Y=72}
{X=120,Y=92}

Create a PointF from Point

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
           Size sz = new Size(12, 12);
           Point pt = new Point(20, 20);
           pt = pt+sz;
           MessageBox.Show("Addition :"+ pt.ToString());
           pt = pt-sz;
           MessageBox.Show("Subtraction :"+ pt.ToString());
           PointF ptf = pt;
           MessageBox.Show("PointF :"+ pt.ToString());
           sz = (Size)pt;
           MessageBox.Show("Size :"+ sz.Width.ToString() 
               +","+ sz.Height.ToString() );
    }

}</source>

Createing Point

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
         Form form      = new Form();
         form.BackColor = Color.White;
         form.Paint    += new PaintEventHandler(MyPaintHandler);
  
         Application.Run(form);
    }
    static void MyPaintHandler(object objSender, PaintEventArgs pea)
    {
         Form     form = (Form)objSender;
         Graphics g = pea.Graphics;
  
         Point pt = new Point(50, 50);
         Point newPoint = Point.Empty;
         newPoint.X = 100;
         newPoint.Y = 200;
         Pen pn = new Pen(Color.Blue, 4);
         g.DrawLine(pn, pt, newPoint);
         pn.Dispose();
         g.Dispose();
    }

}</source>

Createing PointF

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
         Form form      = new Form();
         form.BackColor = Color.White;
         form.Paint    += new PaintEventHandler(MyPaintHandler);
  
         Application.Run(form);
    }
    static void MyPaintHandler(object objSender, PaintEventArgs pea)
    {
         Form     form = (Form)objSender;
         Graphics g = pea.Graphics;
  
         PointF pt = new PointF(50.0F, 50.0F);
         PointF newPoint = PointF.Empty;
         newPoint.X = 100.0F;
         newPoint.Y = 200.0F;
         Pen pn = new Pen(Color.Blue, 4);
         g.DrawLine(pn, pt, newPoint);
         pn.Dispose();
         g.Dispose();        

    }

}</source>

Overloaded Point operators: ==

<source lang="csharp">using System; using System.Drawing; class MainClass {

 public static int Main(string[] args)
 {
   
   Point pt = new Point(100, 72);
   Console.WriteLine(pt);
   Point pt2 = pt;        
   if(pt == pt2)
     Console.WriteLine("Points are the same");
   else
     Console.WriteLine("Different points");
 
   return 0;
 }

}</source>

{X=100,Y=72}
Points are the same

Point Ceiling, Round, Truncate

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
  
           PointF pt1 = new PointF(30.6f, 30.8f);
           PointF pt2 = new PointF(50.3f, 60.7f);
           PointF pt3 = new PointF(110.3f, 80.5f);
           Point pt4 = Point.Ceiling(pt1);
           Point pt5 = Point.Round(pt2);
           Point pt6 = Point.Truncate(pt3);
           MessageBox.Show("Value of pt4: " +pt4.ToString());
           MessageBox.Show("Value of pt5: " +pt5.ToString());
           MessageBox.Show("Value of pt6: " +pt6.ToString());

    }

}</source>

Subtract point and size

<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class PaintHello {

    public static void Main()
    {
           Size sz = new Size(12, 12);
           Point pt = new Point(20, 20);
           pt = pt+sz;
           MessageBox.Show("Addition :"+ pt.ToString());
           pt = pt-sz;
           MessageBox.Show("Subtraction :"+ pt.ToString());
           PointF ptf = pt;
           MessageBox.Show("PointF :"+ pt.ToString());
           sz = (Size)pt;
           MessageBox.Show("Size :"+ sz.Width.ToString() +","+ sz.Height.ToString() );
    }

}</source>