Adobe Extending Flash Professional CS5 Bedienungsanleitung PDF herunterladen (Seite 361)

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EXTENDING FLASH PROFESSIONAL

Math object

Last updated 5/2/2011

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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