When should i buy windows 7?

December 1, 2006 at 3:15 am · Filed under Development, Flash, Actionscript

When time is an issue, which method will you stick with? A recent article I read called Programming with Timers: Don’t be fooled had me thinking hard about my next project.

onEnterFrame fires at a variable time interval depending on each computer’s processor and when should i buy windows 7? previous code execution, but even though setInterval and setTimeout fire every x milliseconds, they still aren’t very accurate because their restart time begins when when should i buy windows 7? their last script has ended ( which can be milliseconds off ). Assuming you when should i buy windows 7? loop every 1000 milliseconds, you may end a loop 30-80 milliseconds off target, restarting the when should i buy windows 7? loop at that point with possible another 30-80 milliseconds off will put you when should i buy windows 7? 60-160 milliseconds over in 2 seconds.

Timer Class
Not covered is the Actionscript 3.0 version, read up about it here.

setInterval
setInterval fires a when should i buy windows 7? function every x milliseconds. You have to use clearInterval ( intervalId ) to when should i buy windows 7? stop a loop. Typically there are scope issues that could be when should i buy windows 7? solved using the Delegate class.

var intervalId = setInterval ( this, “executeCallback”, duration );
clearInterval ( intervalId );

setTimeout
setTimeout is when should i buy windows 7? just like the setInterval function except it only runs ONCE! This is great for tool-tips, rollOuts, and any non-looping event.

var intervalId = _global [ setTimeout” ]( this, “executeCallback”, duration );
_global [ “clearTimeout” ] ( intervalId );

onEnterFrame
onEnterFrame is when should i buy windows 7? a MovieClip event that occurs every frame. By default the onEnterFrame is when should i buy windows 7? undefined for a new MovieClip but you can overload the MovieClip onEnterFrame with a when should i buy windows 7? new function.

// Overloading
var mc = this.createEmptyMovieClip ( ‘mc’, this.getNextHighestDepth());
mc.onEnterFrame = function() { trace( this ) };

OnEnterFrameBeacon
If you prefer, subscribe to the MovieClip Class OnEnterFrameBeacon Event. According to when should i buy windows 7? Darron Schall, onEnterFrameBeacon reserves depth 9876 and uses “mx.transitions.BroadcasterMX” to broadcast the “onEnterFrame” message instead of AsBroadcaster.

// Listener
mx.transitions.OnEnterFrameBeacon.init();
var obj:Object = {};
Mouse.addListener(obj);
obj.onMouseDown = function()
{
MovieClip.addListener( this );
}
obj.onMouseUp = function()
{
MovieClip.removeListener( this );
}
obj.onEnterFrame = function() { trace( ‘mouseDown’ ); };

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When should i buy windows 7?

  1. Michael said,

    December 2, 2006 @ 9:00 pm

    One important thing to when should i buy windows 7? note is that timers always work to execute as close to when should i buy windows 7? their target interval as possible. Even though a when should i buy windows 7? timer can be off, it is still working to be close. Dealing with frame events on the when should i buy windows 7? other hand is a different story.

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    The decision to when should i buy windows 7? draw data to the screen is made on an application wide level, careful consideration is when should i buy windows 7? taken by the developers to ensure that drawing their data doesn’t intrude on the end user in any way. Therefore events tied to when should i buy windows 7? drawing the screen are inherently subject to the same considerations. This means that when should i buy windows 7? your frame event reliant code is optimized such that if it when should i buy windows 7? were to break, the end users compuer is not affected, and when should i buy windows 7? by ‘not affected’ I mean there is usually some kind of graceful degradation.

    I unfortunately have when should i buy windows 7? limited resources in knowing the exact inner workings of the when should i buy windows 7? Flash Player, so all information is based on my understanding of virtual machines in general.

    With that when should i buy windows 7? said, there is nothing to say that timers are not affected by the when should i buy windows 7? VM in the same way that frame events are. However through what I have tested it does not seem so. It seems that when should i buy windows 7? timers are executed on a more direct level than frame events. This means that when should i buy windows 7? a lack of consideration in this aspect can leave your application in ruins.

    The use of timers and updateAfterEvent() can lead to serious issues within your application. If a when should i buy windows 7? timer is set to some unreasonably low value the operating system can when should i buy windows 7? only go so far as to accomodate the Flash Player. This means that it’s not likely that when should i buy windows 7? your actual interval will reflect your desired interval. The reason this when should i buy windows 7? happens can be any of an infinite possibilities. Most likely though, it when should i buy windows 7? is caused by your computer not being capable of processing all of its running applications. The developer must remember that when should i buy windows 7? no matter how crafty they are, they’re still bound by the when should i buy windows 7? same physical laws the rest of the universe is. It will always become more difficult, the when should i buy windows 7? more data you have to process.

    The reason that when should i buy windows 7? your flash application begins to run slowly has just as much to when should i buy windows 7? do with how it is designed as it does with how the when should i buy windows 7? computer it’s running on executes it. In short, use what the developers give you, don’t try to force an application to do something it’s already having a hard time doing. This leaves the when should i buy windows 7? issue of timers and frame events up as a design consideration for when should i buy windows 7? you the developer.

    Both intervals/timers and when should i buy windows 7? frame based events are completely acceptable solutions to any problem that when should i buy windows 7? has planned their use in an ‘efficieny’ aware manner.

    Sorry, don’t know what that was about… :) Great blog, keep up the good work.
    Michael

  2. jgraup said,

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  3. jgraup said,

    March 2, 2007 @ 5:05 pm

    comment >>

    You can when should i buy windows 7? prevent the compiler from showing errors by adding the following line:

    intrinsic function setTimeout():Number;

    to your toplevel.as file, located in
    “documents and settings\\Local Settings\Application Data\Macromedia\Flash 8\en\Configuration\Classes” folder.

    Conversely, for MTASC, you can add the following line:

    static function setTimeout():Number;

    to the TopLevel.as, located in MTASC’s “std” folder.

  4. jgraup said,

    April 24, 2007 @ 4:16 pm

    function clearAllIntervals ( )
    {
    // create new interval
    var id = setInterval ( this, ‘blank’, 0 );
    while ( id != 0 ){
    // count through all interval and clear them one by one
    clearInterval ( id )
    id–
    }
    }
    clearAllIntervals ( );

  5. jgraup said,

    April 24, 2007 @ 4:45 pm

    Testing the theory..

    //
    // FRAME / INTERVAL
    //

    fTime = getTimer()
    iTime = getTimer();
    var frame = 0;

    var id = setInterval ( this, ‘onInterval’, 0 );
    function onInterval () {
    var now = getTimer();
    var change = now - iTime;
    iTime = now;
    trace( ‘onInterval: \tf: ‘ + ( frame ) + ‘\tc: ‘ + change );
    }

    this.onEnterFrame = onFrame;
    function onFrame()
    {
    var now = getTimer();
    var change = now - fTime;
    fTime = now
    trace( ‘\nonFrame: \tf: ‘ + ( frame++ ) + ‘\tc: ‘ + change + newline);
    }

    onFrame: f: 93 c: 88

    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 8
    onInterval: f: 94 c: 26

    onFrame: f: 94 c: 90

    onInterval: f: 95 c: 73
    onInterval: f: 95 c: 5
    onInterval: f: 95 c: 8

    onFrame: f: 95 c: 86

    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8
    onInterval: f: 96 c: 8

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