Adobe Extending Flash Professional CS4 Instrukcja Użytkownika Strona 348

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EXTENDING FLASH CS4 PROFESSIONAL
Math object
Math.invertMatrix()
Availability
Flash MX 2004.
Usage
Math.invertMatrix(mat)
Parameters
mat Indicates the Matrix object to invert (see Matrix object). It must have the following fields: a, b, c, d, tx, and ty.
Returns
A Matrix object that is the inverse of the original matrix.
Description
Method; returns the inverse of the specified matrix.
Example
The following example stores the currently selected object in the elt variable, assigns that matrix to the mat variable,
and stores the inverse of the matrix in the
inv variable:
var elt = fl.getDocumentDOM().selection[0];
var mat = elt.matrix;
var inv = fl.Math.invertMatrix( mat );
Math.pointDistance()
Availability
Flash MX 2004.
Usage
Math.pointDistance(pt1, pt2)
Parameters
pt1, pt2 Specify the points between which distance is measured.
Returns
A floating-point value that represents the distance between the points.
Description
Method; computes the distance between two points.
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