# Proximity

**URL:** <https://forum.kirupa.com/t/proximity/26624>\
**Category:** Uncategorized\
**Created:** [July 24, 2003, 8:11pm UTC](https://forum.kirupa.com/t/proximity/26624 "2003-07-24T20:11:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ivanwright](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/ivanwright/32/119_2.png) [@ivanwright](https://forum.kirupa.com/u/ivanwright)\
**Post date:** [July 24, 2003, 8:11pm UTC](https://forum.kirupa.com/t/proximity/26624/1 "2003-07-24T20:11:41Z")

</div>

does anyone know how to get something to happen according to the mouse’s proximity to an object? like say i have a square & i want that square to get bigger the closer the mouse gets to it… how would one do that?

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<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [July 24, 2003, 8:43pm UTC](https://forum.kirupa.com/t/proximity/26624/2 "2003-07-24T20:43:13Z")

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heres a mouse distance formula. Just use that to get a distance and base your reaction on that distance (like scale = distance);

```auto
Mouse.distanceFrom = function(obj){
	var dx = obj._x - obj._parent._xmouse;
	var dy = obj._y - obj._parent._ymouse;
	return Math.sqrt(dx*dx+dy*dy);
};
// use: distance = Mouse.distanceFrom(myMovieClip);

```