Matrix

function Matrix( a :  Number, b :  Number, c :  Number, d :  Number, tx :  Number, ty :  Number )

Constructor

Note

Calling new Matrix() with no parameters creates an identity matrix.

function transformPoint( p :  Point ) : Point

Applies the transformation defined by the Matrix to a point.

function deltaTransformPoint( p :  Point ) : Void

Applies the transformation defined by the Matrix to a point, but ignores the tx and ty properties.  In other words, it does not apply translation.

function toString() : String

Returns a list of the Matrix’s properties.  Useful for debugging.

function scale( sx :  Number, sy :  Number ) : Void

Resizes the Matrix.  Multiplies each x value in the Matrix (the first column) by sx.  Multiplies each y value in the Matrix (the 2nd column) by sy.

Example

var mat = new Matrix(1,1,1,1,1,1);
//mat is now (a=1, b=1, c=1, d=1, tx=1, ty=1)
mat.scale(2,3);
//mat is now (a=2, b=3, c=2, d=3, tx=2, ty=3)

function translate( tx :  Number, ty :  Number ) : Void

Adjusts the tx and ty properties.

Example

var mat2 = new Matrix(1,1,1,1,1,1);
//mat is now (a=1, b=1, c=1, d=1, tx=1, ty=1)
mat2.translate(2,3);
//mat is now (a=1, b=1, c=1, d=1, tx=3, ty=4)

function rotate( r :  Number ) : Void

function identity() : Void

Sets properties so the Matrix is now an identity matrix.

| 1  0  |
| 0  1  |
| 0  0  |

function invert() : Void

function concat( m :  Matrix ) : Void

function clone() : Matrix

function createGradientBox( width :  Number, height :  Number, rot :  Number, x :  Number, y :  Number )

function createBox( scalex :  Number, scaley :  Number, rot :  Number, x :  Number, y :  Number )