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Matrix (flash.geom.Matrix) 769

Example

The following example creates three matrixes that define transformations for three rectangle

movie clips. The first two matrixes

rotate45Matrix and doubleScaleMatrix are applied to

the two rectangles

rectangleMc_1 and rectangleMc_2. Then the third matrix is created

using the

concat() method on rotate45Matrix and doubleScaleMatrix to create

scaleAndRotateMatrix. This matrix is then applied to rectangleMc_3 to scale and rotate

it.

import flash.geom.Matrix;

import flash.geom.Transform;

var rectangleMc_0:MovieClip = createRectangle(20, 80, 0x000000);

var rectangleMc_1:MovieClip = createRectangle(20, 80, 0xFF0000);

var rectangleMc_2:MovieClip = createRectangle(20, 80, 0x00FF00);

var rectangleMc_3:MovieClip = createRectangle(20, 80, 0x0000FF);

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 rotate45Matrix:Matrix = new Matrix();

rotate45Matrix.rotate(Math.PI/4);

rectangleTrans_1.matrix = rotate45Matrix;

rectangleMc_1._x = 100;

trace(rotate45Matrix.toString()); // (a=0.707106781186548,

b=0.707106781186547, c=-0.707106781186547, d=0.707106781186548, tx=0,

ty=0)

var doubleScaleMatrix:Matrix = new Matrix();

doubleScaleMatrix.scale(2, 2);

rectangleTrans_2.matrix = doubleScaleMatrix;

rectangleMc_2._x = 200;

trace(doubleScaleMatrix.toString()); // (a=2, b=0, c=0, d=2, tx=0, ty=0)

var scaleAndRotateMatrix:Matrix = doubleScaleMatrix.clone();

scaleAndRotateMatrix.concat(rotate45Matrix);

rectangleTrans_3.matrix = scaleAndRotateMatrix;

rectangleMc_3._x = 300;

trace(scaleAndRotateMatrix.toString()); // (a=1.4142135623731,

b=1.41421356237309, c=-1.41421356237309, d=1.4142135623731, tx=0, ty=0)