Matrix Class

Represents an affine transformation by a 3 x 3 matrix. Pair (sx, sy) indicates the scale transformation, pair (rs0, rs1) indicates the rotation transformation, pair (tx, ty) indicates the translation transformation. The third column of this matrix is always (0, 0, 1). This class cannot be inherited.

Definition

public sealed class Matrix: Object

Members Table

The following table lists the members exposed by the Matrix object. Click a tab on the left to choose the type of member you want to view.

Methods

Method	Description
Equals	Overloaded. Compares two objects to determine if they are equal.
GetHashCode	Overriden. Serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures like a hash table.
GetType	Gets the Type of the current instance. (Inherited from Object)
Invert	Replaces two translation elements of the Matrix by its inverse elements.
Matrix	Overloaded. Initializes a new instance of Matrix.
Multiply	Overloaded. Returns a Matrix object that represents the multiplication of two matrices.
PostMultiply	Updates the current Matrix by the multiplication of itself with a specified Matrix.
PreMultiply	Updates the current Matrix by the multiplication of itself with a specified Matrix.
ReferenceEquals	Determines whether the specified Object instances are the same instance. (Inherited from Object)
Rotate	Returns a Matrix object which is the result of the rotation of the current Matrix by a specified angle.
Scale	Returns a scaling matrix with the specified scale values.
ToString	Overriden. Returns a String that represents the current Object.
Translate	Returns a translation matrix with the specified translation values.

Properties

Property	Description
rs0	Gets or sets the element of the Matrix that represents the rotation transformation.
rs1	Gets or sets the element of the Matrix that represents the rotation transformation.
sx	Gets or sets the element of the Matrix that represents the horizontal scale transformation.
sy	Gets or sets the element of the Matrix that represents the vertical scale transformation.
tx	Gets or sets the element of the Matrix that represents the horizontal translation transformation.
ty	Gets or sets the element of the Matrix that represents the vertical translation transformation.

Operators

Operator	Description
operator !=	Determines whether two specified Matrix instances are different.
operator *	Overloaded. Multiplies two specified Matrix instances.
operator ==	Determines whether two specified Matrix instances are equivalent.

Inheritance Hierarchy

Object

Matrix

Examples

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// This sample shows how to implement the Matrix class.

 

using System.Drawing;

using System.Windows.Forms;

 

public class MyControl : System.Windows.Forms.Control

{

     protected override void OnPaint( PaintEventArgs e )

     {

          Visual v= Visual;

 

          // Creates a new instance of the Matrix.

          Matrix myMatrix = new Matrix(/*sx*/180,/*rs0*/200,/*rs1*/100,/*sy*/0,/*tx*/190,/*ty*/140);

 

          // Initializes the Gradient object with 6 gradient color elements.

          Gradient gd= new Gradient(6);

          gd.SetColor( 0, Color.FromArgb(255,0,0) );

          gd.SetOffset( 0, 0 );

          gd.SetColor( 1, Color.FromArgb(0,255,0) );

          gd.SetOffset( 1, 50);

          gd.SetColor( 2, Color.FromArgb(0,0,255) );

          gd.SetOffset( 2, 100);

          gd.SetColor( 3, Color.FromArgb(255,0,0) );

          gd.SetOffset( 3, 150);

          gd.SetColor( 4, Color.FromArgb(0,255,0) );

          gd.SetOffset( 4, 200);

          gd.SetColor( 5, Color.FromArgb(100,100,100) );

          gd.SetOffset( 5, 250);

 

          // Draws two rectangles filled with the gradient color elements.

          v.BeginRadialGradientFill( gd, myMatrix);

          v.DrawRectangle(0,0,190,140);

          v.DrawRectangle(190,140,190,140);

          v.EndFill();

     }

 

}

 

public class Form1 : System.Windows.Forms.Form

{

     private MyControl control1= null;

     public Form1()

     {

          InitializeComponent();

     }

     private void InitializeComponent()

     {

          SuspendLayout();

          control1= new MyControl();

          control1.Location= new System.Drawing.Point(10,10);

          control1.Size= new Size(Application.Width-10,Application.Height-10);

          Controls.Add( control1);

          ResumeLayout(false);

     }

     static void Main()

     {

          Application.Run( new Form1() );

     }

}

Class Information

Namespace	System.Drawing
Flash Library	System.Drawing.scl
Flash Library Version	2.0.0.1291
Silverlight Library	System.Windows.Forms.dll