var mouse_obj = {
nx:null, ny:null, ox:null, oy:null,
velx:0, vely:0, mov:0, target:_root,
init: function( $target )
{
with ( this )
{
target = $target;
nx = ox = target._xmouse;
ny = oy = target._ymouse;
velx = vely = mov = 0;
}
},
update: function()
{
with ( this )
{
ox = nx
oy = ny
nx = target._xmouse;
ny = target._ymouse;
velx = nx - ox;
vely = ny - oy;
mov = Math.sqrt((velx*velx) + (vely*vely));
}
}
};
onMouseDown = function()
{
mouse_obj.init( _root );
this.onEnterFrame = function()
{
mouse_obj.update();
trace ( 'velx: ' + mouse_obj.velx )
trace ( 'vely: ' + mouse_obj.vely )
trace ( 'mov: ' + mouse_obj.mov + newline )
};
}
onMouseUp = function()
{
this.onEnterFrame = null;
}
_____________________________
Jesse Graupmann
www.jessegraupmann.com
www.justgooddesign.com/blog/
_____________________________
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of eric e.
dolecki
Sent: Wednesday, June 20, 2007 10:29 AM
To: Flashcoders mailing list
Subject: [Flashcoders] Mouse Velocity?
I am calculating mouse velocity, but every now and then you get a 0 for
velocity eventhough its not 0 (setInterval prob I suspect). Any better
approach?
var MouseX;
var MouseY;
function determineVelocity():Void
{
MouseX = _root._xmouse
MouseY = _root._ymouse
setTimeout( calc, 9 );
};
setInterval( determineVelocity, 20 );
function calc():Void
{
var newMouseX:Number = _root._xmouse;
var newMouseY:Number = _root._ymouse;
var deltaX = Math.abs(MouseX - newMouseX)
deltaY = Math.abs(MouseY - newMouseY)
dist = Math.sqrt((deltaX * deltaX) + (deltaY * deltaY))
velocity = dist*31; // 31 = fps
trace( velocity );
};
_______________________________________________
[email protected]
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.com
