Chapter 28: matrix object, Matrix.a, Matrix object – Adobe Extending Flash Professional CS4 User Manual
Page 350: Each parameter must be an object with
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Chapter 28: Matrix object
Availability
Flash MX 2004.
Description
The Matrix object represents a transformation matrix.
Property summary
The following properties are available for the Matrix object:
matrix.a
Availability
Flash MX 2004.
Usage
matrix.a
Description
Property; a floating-point value that specifies the (0,0) element in the transformation matrix. This value represents the
scale factor of the object’s x-axis.
Example
The
a
and
d
properties in a matrix represent scaling. In the following example, the values are set to 2 and 3, respectively,
to scale the selected object to two times its width and three times its height:
var mat = fl.getDocumentDOM().selection[0].matrix;
mat.a = 2;
mat.d = 3;
fl.getDocumentDOM().selection[0].matrix = mat;
You can rotate an object by setting the
a
,
b
,
c
, and
d
matrix properties relative to one another, where
a = d
and
b =
-c
. For example, values of 0.5, 0.8, -0.8, and 0.5 rotate the object 60º:
Property
Description
A floating-point value that specifies the (0,0) element in the transformation matrix.
A floating-point value that specifies the (0,1) element in the matrix.
A floating-point value that specifies the (1,0) element in the matrix.
A floating-point value that specifies the (1,1) element in the matrix.
A floating-point value that specifies the x-axis location of a symbol’s registration point or the center of a
shape.
A floating-point value that specifies the y-axis location of a symbol’s registration point or the center of a
shape.