I would also try to avoid string concatenation. It's usually a big
performance issue, since strings are immutable (so a sequential block
of memory has to be allocated, and the strings you are joining are
copied to the new location).
I would draw an entire page up front, then just reveal as you go
through masking or an mc overlaying the text.
Scott
On 04/09/06, Scott Hyndman <[EMAIL PROTECTED]> wrote:
Are you ever calling dispose on the bitmap data? Because if not it
won't run for long.
Scott
On 04/09/06, kariminal <[EMAIL PROTECTED]> wrote:
> Thanks for the replies so far...
>
> I am now using BitmapData.draw() ( and source_mc._visible=false + moved
> offstage ): it run a little faster than before. And only seems to choke when
> the browser is maximized at higher resolution ( around 1280x1024 ), maybe I
> am knit picking?...
>
> But, I think something is not going right in my code and that the draw loop
> could be optimized. The code now looks something like this:
>
> // code
>
> private function animationLoop( ):Void{
>
> if ( lineCounter > code_lines.length ) lineCounter = 2
> if ( lineCounter == 0 ) {
> field_txt.text = code_lines[lineCounter]
> } else { field_txt.text = field_txt.text +
> code_lines[lineCounter] }
>
> myBitmapData = new BitmapData(source_mc._width,
> source_mc._height , false, 0xFFFFFFFF );
> target_mc.attachBitmap(myBitmapData, 10);
> myBitmapData.draw(source_mc);
>
> lineCounter ++
>
> }
> // code
>
> I am finding it a little odd, that I am making a new BitMapData object every
> interval and tried moving it outside the loop but got strange results (due
> to my ignorance): every time 'attachBitmap' ran, it seemed the old bitmap
> was not being cleared.
>
> + also changed the font to Verdana, tried various interval times, but
> neither of these did much to improve the situation. Anyone think I can
> squeeze a little more FPS out of this one?..
>
> http://www.kurst.co.uk/transfer/2/ - Using BitmapData
> http://www.kurst.co.uk/transfer/1/ - and not
>
>
>
>
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Dan Rogers
> Sent: 04 September 2006 19:55
> To: Flashcoders mailing list
> Subject: Re: [Flashcoders] Slow performance
>
> If you're looking to improve performance and keep the speed of your
> animation, you could experiment with BitmapData.draw() and render a bitmap
> copy of a hidden text movieclip. I think the bottleneck is mostly due to
> the heavy font vectors. If your font movieclip was hidden and/or moved
> off-stage, you could probably get away with a single BitmapData object set
> to the size of the screen, redrawing each time the text changes.
>
> -Danro
>
>
> On Sep 3, 2006, at 1:19 PM, Marc Hoffman wrote:
>
> > I'm seeing a window full of text (Firefox, Win XP Pro) -- is this what
> > you intended? If so, that's a HUGE number of vectors to redraw so
> > rapidly. Furthermore, by using a serif font you're probably doubling
> > or tripling the number of vectors, so try the simplest, non-serif,
> > mono-stroke (consistent stroke thickness) font you can, such as
> > Verdana. And of course lengthen the redraw interval.
> >
> > Marc
> >
> > At 12:24 PM 9/3/2006, you wrote:
> >> Hi,
> >> setInterval each 10ms might be a bit overkill.
> >> grtz
> >> JC
> >>
> >>
> >> On 9/3/06, kariminal <[EMAIL PROTECTED]> wrote:
> >>>
> >>> Hello All...
> >>>
> >>> My flash movie fills the whole browser window. If the window is kept
> >>> small performance is great, however when I maximize the browser
> >>> everything slows down. This is a simple effect which I think should
> >>> run at a good speed regardless. I've uploaded a sample here:
> >>> http://www.kurst.co.uk/ transfer/
> >>>
> >>> And the animation code is as follows:
> >>>
> >>> //CODE
> >>>
> >>> private function stopAnimation( ):Void{
> >>>
> >>> clearInterval( animationIID );
> >>>
> >>> }
> >>> private function restartAnimation( ):Void{
> >>>
> >>> stopAnimation();
> >>> animationIID = setInterval( this, "animationLoop" ,
> >>> 10 );
> >>>
> >>> }
> >>> private function animationLoop( ):Void{
> >>>
> >>>
> >>> // make sure we always keep the counter within the
> >>> length of the array
> >>> if ( lineCounter > code_lines.length ) lineCounter =
> >>> 2
> >>>
> >>> // print the text
> >>> if ( lineCounter == 0 ) {
> >>>
> >>> field_txt.text = code_lines[lineCounter]
> >>>
> >>> } else { field_txt.text = field_txt.text +
> >>> code_lines[lineCounter] }
> >>>
> >>> // ready counter for the next line
> >>>
> >>> lineCounter ++
> >>>
> >>> if (field_txt.maxscroll > 1 ){
> >>>
> >>>
> >>> pageCounter ++;
> >>> field_txt.text = "";
> >>> stopAnimation();
> >>> clearInterval( clearIID );
> >>> clearIID = setInterval( this,
> >>> "restartAnimation" , clearIntervalTime );
> >>>
> >>> }
> >>>
> >>>
> >>> }
> >>>
> >>> //CODE
> >>>
> >>>
> >>> And I've also uploaded a copy of the whole class here
> >>> http://www.kurst.co.uk/transfer/textComponent.as
> >>> Any tips on optimizing this one are welcome...
> >>>
> >>>
> >>> Regards
> >>>
> >>>
> >>>
> >>>
> >>> Karim
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
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> >
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