ActionScript 2.0 Language Reference - Adobe Help and Support

myMatrix.translate(100,200);
trace(myMatrix.toString()); // (a=1.6, b=1.2, c=-1.2, d=1.6, tx=100,
ty=200)
myMatrix.scale(2, 2);
trace(myMatrix.toString()); // (a=3.2, b=2.4, c=-2.4, d=3.2, tx=200,
ty=400)
myMatrix.identity();
trace(myMatrix.toString()); // (a=1, b=0, c=0, d=1, tx=0, ty=0)
invert (Matrix.invert method)
public invert() : Void
Performs the opposite transformation of the original matrix. You can apply an inverted matrix
to an object to undo the transformation performed when applying the original matrix.
Availability: ActionScript 1.0; Flash Player 8
Example
The following example creates halfScaleMatrix by calling the invert() method of
doubleScaleMatrix, and then demonstrates that the two are Matrix inverses of one another,
that is, matrixes that undo any transformations performed by the other. The example shows
this inversion by creating originalAndInverseMatrix, which is equal to noScaleMatrix.
import flash.geom.Matrix;
import flash.geom.Transform;
var rectangleMc_0:MovieClip = createRectangle(20, 80, 0xFF0000);
var rectangleMc_1:MovieClip = createRectangle(20, 80, 0x00FF00);
var rectangleMc_2:MovieClip = createRectangle(20, 80, 0x0000FF);
var rectangleMc_3:MovieClip = createRectangle(20, 80, 0x000000);
var rectangleTrans_0:Transform = new Transform(rectangleMc_0);
var rectangleTrans_1:Transform = new Transform(rectangleMc_1);
var rectangleTrans_2:Transform = new Transform(rectangleMc_2);
var rectangleTrans_3:Transform = new Transform(rectangleMc_3);
var doubleScaleMatrix:Matrix = new Matrix(2, 0, 0, 2, 0, 0);
rectangleTrans_0.matrix = doubleScaleMatrix;
trace(doubleScaleMatrix.toString()); // (a=2, b=0, c=0, d=2, tx=0, ty=0)
var noScaleMatrix:Matrix = new Matrix(1, 0, 0, 1, 0, 0);
rectangleTrans_1.matrix = noScaleMatrix;
rectangleMc_1._x = 100;
trace(noScaleMatrix.toString()); // (a=1, b=0, c=0, d=1, tx=0, ty=0)
Matrix (flash.geom.Matrix) 785