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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)
Summary of Contents for FLASH 8-ACTIONSCRIPT 2.0 LANGUAGE
Page 1: ...ActionScript 2 0 Language Reference ...
Page 1352: ...1352 ActionScript classes ...