Leaving an ENTER_FRAME listening seems to eat 20-30% of the CPU while doing nothing. CPU usage seems to improve to under 3% when it is removed. Of course don't forget to addEventListener in the appropriate places, such as when the stage is resized, or the menu is clicked.

private function dispatchOnEnterFrame(e) {
//if the diffrence=0 do nothing
if (Math.abs(finalX-cX)<1) {
trace("OnEnterFrame removed");

holder.removeEventListener(Event.ENTER_FRAME,dispatchOnEnterFrame);
return;
}

//else update the sliding of our image holder with easing
imgHolder.x+=(finalX-imgHolder.x)/6;
//and also update the current X aside but with a greater easing coef to have some retard in time
//between the 2 transition
cX+=(finalX-cX)/12;

//generate a percentage
var per=100*(1-(finalX-cX)/diffX);
//and ease the current percentage depending on the current generated percentage
//this will assure the smoothing and the continus animation
percentage+=(per-percentage)/12;
//update the scaling to have the zoom in out effect
holder.scaleX=1-(.5)*Math.sin(Math.PI*percentage/100);
holder.scaleY=1-(.5)*Math.sin(Math.PI*percentage/100);
}

Hey. I kinda new to AS3, it does show how these files are suppose to be setup.. pretty confusing, maybe cuz im new to this. so question is. do i put all this code in one external file? or do i break up the code in couple files?

Excellent tutorial.
I'm new with AS3 and i have a question : i want to modify your script in order to :
- remove the the 1-n buttons,
- show the pictures one by one with a 2 seconds interval.

remove the buttons is pretty easy ;-)
But (if i don't make mistakes) i don't know how to put the setInterval to the showImageAt() function. Can you explain me to do this ?

You don't have to invoke it, it is being published on the stage of the PhotoViewer swf from the AS file.

I have adapted parts of your excellent tutorial as the basis for an agency portfolio, and I wonder if you have given any thought to how you might incorporate video into the mixture? I'd be very interested to hear any thoughts or input you might have to offer. I sincerely appreciate the work you put into producing this tut. Thanks again.

Ken

Great transition effects! I am trying to embed your movie in another one. I keep getting the error message "TypeError: Error #1009: Cannot access a property or method of a null object reference. at PhotoViewer()". I am using the following code to load the movie:

import flash.display.*;
import flash.net.URLRequest;

var rect:Shape = new Shape();
rect.graphics.beginFill(0xFFFFFF);
rect.graphics.drawRect(100, 41, 741, 501);
rect.graphics.endFill();
addChild(rect);



var ldr:Loader = new Loader();

ldr.mask = rect;
var url:String = "PhotoViewer.swf";
var urlReq:URLRequest = new URLRequest(url);
ldr.load(urlReq);
addChild(ldr);

The error occurs at the first import statement in your PhotoViewer.as file. Any ideas on what my problem is ?

Thanks.

check this out. the #1099 errors are due to losing access to the stage because you are not calling the swf file directly.

here is another way to change the code without manually entering the actual stageWidth and stageHeight. http://board.flashkit.com/board/showthread.php?p=4220508&posted=1#post4220508

the flyingbuddha says to do this:
public function PhotoViewer(){

// listen out for when photoviewer has been attached to the stage
addEventListener(Event.ADDED_TO_STAGE,init);

}

private function init(e:Event):void{
// you can now work with the stage
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
stage.addEventListener(Event.RESIZE, resizeHandler);
// ... other init code. }


Check out the link if this is all mangled.

Amen - thank you for this tutorial - you are AWESOME!

Love the app
Does anyone know how to intergrate this app into flex3 (have mxml call the as3)

When I open the fla or swf file, it does only blank screen and does not show any image? What should I do not correct this problem?

How can i change the stage size? Sorry to ask but i'm new to this
Thank you in advanced.

Best,
Krai

I hate tutorials like this. I got lost by the third page. The code is explained, I test it and it doe snot work. I have gone over it, over and over and I don't see anything. I even downloaded the foles. Still nothing!