ActionScript for Flash MX: The Definitive Guide, Second Edition

MovieClip._ymouse Property

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ActionScript Language Reference

If mc is contained by an instance that is scaled and/or rotated, the coordinate space it

inhabits is also scaled and/or rotated. For example, if

mc’s parent is scaled by 200% and

rotated 90 degrees clockwise,

_y will increase toward the left rather than downward, and a

single unit of

_y will actually be 2 pixels instead of 1.

Because switching between instance and main movie coordinate spaces can be cumber-

some, the MovieClip object provides the localToGlobal() and globalToLocal() methods for

performing coordinate-space transformations.

Example

The following onEnterFrame() handler causes ball_mc to move down 5 pixels with each

passing frame (assuming that its coordinate space hasn’t been altered by transformations to

its parent):

ball_mc.onEnterFrame = function () {

this._y += 5;

}

See Also

MovieClip.globalToLocal(), MovieClip.localToGlobal(), MovieClip._x

MovieClip._ymouse Property

vertical location of the mouse pointer

Flash 5

read-only

mc._ymouse

Description

The floating-point _ymouse property indicates the vertical location of the mouse pointer’s

hotspot, relative to the coordinate space of

mc.Ifmc is a main movie, _ymouse is measured

from the Stage’s top edge. If

mc is an instance, _ymouse is measured from the instance’s

registration ...