User Guide

228 Chapter 3: Objects
Math object
Availability
Flash MX 2004.
Description
The Math object is available as a read-only property of the flash object; see fl.Math. This object
provides methods that perform common mathematical operations.
Method summary for the Math object
The following methods are available for the Math object:
Math.concatMatrix()
Availability
Flash MX 2004.
Usage
Math.concatMatrix(mat1, mat2)
Parameters
mat1
and mat2 Specify the Matrix objects to be concatenated (see Matrix object). Each
parameter must be an object with fields
a, b, c, d, tx, and ty.
Returns
A concatenated object matrix.
Description
Method; performs a matrix concatenation and returns the result.
Example
The following example stores the currently selected object in the elt variable, multiplies the
object matrix by the view matrix, and stores that value in the
mat variable:
var elt = fl.getDocumentDOM().selection[0];
var mat = fl.Math.concatMatrix( elt.matrix , fl.getDocumentDOM().viewMatrix );
Method Description
Math.concatMatrix() Performs a matrix concatenation and returns the result.
Math.invertMatrix() Returns the inverse of the specified matrix.
Math.pointDistance() Computes the distance between two points.
CHAPTER 3
Objects