Actionscript 3 - How To Avoid Flash.display Flickering
May 7, 2011
Coming from a more'traditional' C++ background so more used to dealing with low level API's rather than something like the flash.display API.How does one avoid screen tearing/flickering in the display API?Even with a high framerate like 60 fps I'm experiencing some rather nasty flickering/tearing between frames.Take the simplistic example below, where the children of the Sprite are merely instances of Shape and never change.
private function onEnterFrame(event:Event):void
{
var t:Number = (getTimer() - time) / 1000;
time = getTimer();
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Feb 18, 2010
I just trying to learn basic flash programming skills, now I got a program that load an image from my local machine, and show it with uiloader component, code is something like:
var myImage:String = "picture.png"
var request:URLRequest = new URLRequest(myImage);
uiLoader.load(request);
It's working fine, but when dynamically change the picture, I notice a flicker while loading, there is any way to avoid this flicker? i mean, like double-buffering or so.
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Nov 4, 2009
in my mxml file I have images declared like this:
<mx:Image x="0" y="0" source="assets/bigpicture.png" id="picture1"/>
and at some event I do:
picture1.source = "assets/bigpicture2.png";
However this results in flex removing the picture, and when it has loaded it will show it again.
How can I make the mx:image make so that it will continue to show the image until the new image has been loaded?
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Sep 8, 2010
I frequently update my website. But customers do not see immediately the changes as the cache displays the previous version.
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Feb 18, 2011
I have a timer in my application. For every 30 min, it will hit the web services and fetch the data and updates the UI. The application was working fine till yesterday. Suddenly, because of some issue, the web services were not available for some time. During that period, Application displayed the RPC Error multiple times(More than 100 alert boxes) in alert window. Because of this alert boxes, my application was hanged and i was not able to do anything.
I have tried several approaches, but nothing worked.Finally, I have tried to use a flag. In all the approaches, this looked promising. so i have implemented it.Basically, in this approach whenever we open an alert we will set a flag.While opening and closing alert we will reset this flag.
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May 5, 2011
I have embedded flash in my html pages but upon refresh, it flickers, is there anyway to stop this?
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Nov 23, 2010
I'm having a problem with youtube video embedding;
In some places on my site (like news etc.) video is normally displayed and can be watched, while in others (forum topics mainly) it flickers whenever I mouseover it (making a new HTTP request to YouTube, as I can see in Firebug).
It definitelly has something to do with CSS rendering; when I disable JS nothing changes but disabling CSS causes it to work properly.
Firefox version: 3.6.12
Flash version: 10.1.82.76
The code I'm using for embedding:
<object type="application/x-shockwave-flash" width="390" height="293" data="http://www.youtube.com/v/pIxVoDNbujM?ft=18">
<param name="allowFullScreen" value="true"></param>
[Code]....
Edit: OMG, it works properly when I'm logged out... Now nothing is clear to me as CSS is the same for users and guests, there are just few minor differences in markup...
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Apr 7, 2011
I have a ball moving around the screen, position updated on ENTER_FRAME. My problem is that there is a considerable amount of flicker going on. I have thought about using something like TweenLite to move the ball but as the position is being updated frame-to-frame I don't think that will work.[code]...
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Jul 22, 2010
The problem is when you rollover with your cursor in certain areas and in certain ways you can cause this strange flickering effect to happen.where it keeps trying to go back to the over state and then the out states repeatedly).
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Jul 10, 2011
I was wondering how to achieve the native scrollbar effect which TheFWA (thefwa.com) has managed to do pretty well (I am not a fan of Flex scrollbars).and implemented the technique, as I am calling a JS function through ExternalInterface every time, when the flash object changes size. This JS function simply resizes the div which holds the flash object, which creates the native bars.Unfortunately, when I resize quite rapidly (from 800 to 1800 height, for instance) the flash object simply gets warped for several milliseconds (as if it hasn't changed its size, but simply got pulled in all directions). After these milliseconds, things get back to normal, but the whole situation is really visually annoying.
Originally I thought that it's simply a timing issue, but after a bunch of attempts to set a delay, the effect was the same ... just delayed.How can I resolve that? I know it's technically possible. Just take a look at TheFWA, and see how smoothly flash and the browser are communicating with each other to make the native scroll bars work, without any flickering, or mismeasurement
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Nov 25, 2009
I have a problem with a flash image gallery that I created and have now posted to my website.
When the flash movie is viewed on it's own you can click the main images and you are taken to a product page. However when the flash movie is integrated into the website, the links are random at best and for the most part dont work.
Take a look:
1. Standalone flash gallery
2. Embedded in webpage
I thought that the scrolling marquee to the left of the page might be causing a problem but the problem doesn't go away when I remove this.
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May 26, 2010
working on making a flash program that loads about 1000 jpegs and then plays them like a movie. Have all the buttons and stuff working but the time it takes for an image to load is so high that the movie can't be played at 30 fps. I've tried multiple ways of fixing this
using 1 scrollpane and changing its source ever 30 ms. This one is the worst but simplest. Flickers cause strobing and it is unwatchable.
used 2 scrollpanes that were duplicates of each other until I had to load. I would then make that one invisible, load it , then make it visible. Then load the background one. Works but same problem as the first at high speeds, just less severe. used 1 scrollpane per image . This works great, except that it fails miserably on any more than 100 of them due to the number of objects.Currently using action script 3, but will change if its not possible in that.
Also, I want to be able to zoom in and then scroll around the window hence the scrollpanes, but if that's not possible its a sacrifice I'm willing to make
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Mar 9, 2010
I have a movieclip, a square, which I would like to have moving around on stage, avoiding the mouse if you "chase" the movieclip. all the threads I have found have been with Actionscript 1.0 or 2.0. I tried converting it to AS3, but failed.
stage.addEventListener(Event.ENTER_FRAME, avoidTouch);
function avoidTouch(event:Event):void {
var distx: int = noTouch_mc.x - mouseX;
[code]....
Im stuck. I want to make it calculate the distance from the mouse to the NoTouch_mc and if it gets below a certain number, make the noTouch_mc move away from the mouse.If it could be made so it never leaves stage, that I'd like to incorporate too, but wouldn't I have to consider sinus and cosinus to an angle to make it turn?
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Sep 24, 2010
I am developing a Facebook App that requires Flash to PHP communication. I am able to send the data to PHP but the page reloads.
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May 18, 2011
I have to display a multitude of labels on-screen without overlap.The label positions should be as close as possible to the features they describe. The features may be points, lines, or polygons on-screen (imagine any variety of map).I have to satisfy the following requirements in my application:labels must be positioned to avoid overposting (overlap) with other labels..labels must be positioned to avoid overlapping with other features (polygons and line segments) optimum position for a label is above and to the right of the feature they describe below and to the right is less acceptable least acceptable positions are to the left.I need to come up with a method for doing this.Before I just start attempting to do this at random, I am hoping someone here may have already done this and be able to give me some advice as to where to start.Basically, with the labels, I could use bounding boxes to compare them to each other. Although I don't know a good way to do this. With the line segments and polygons onscreen that they are labeling, I really don't have a clue what I should do to avoid overlap. I am hoping it won't require much more effort on top of avoiding the overlap of the labels themselves.
I think repulsion would work if I only had to deal with labels overlapping other labels. But if I have a line segment drawn across half the screen, I don't know how I can avoid overlap with that using the repulsion technique.The language I am using is Actionscript 3 and the Flex framework. I don't believe Flex has any layout manager classes like there are in Java Spring that can do this work for me.Anyway, links or suggestions would be welcome. I can allow for some brute force; I don't see how I can accomplish this otherwise.
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Mar 22, 2010
Ive read you can do this with share objects but, have search and search and i cant find a concrete or simple answer to follow.
No frame solution please, this does not look good when viewing image on laptop (768 as height)
What i am looking to do is create 5 pages with the same flash header. Links will be below the movie. When people click on the links a new page opens (same window) without reloading the flash file.
I think i need a code to put in my first frame to store a cookie but cant find the code.
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Mar 22, 2010
I believe this can be done using share objects but, have search and search and i cant find a concrete or simple answer to follow.
I have use this and does not look good when viewing image on laptop (768 as height)
What i am looking to do is create 5 pages with the same flash header. Links will be below the movie. When people click on the links a new page opens (same window) without reloading the flash file.
I think i need a code to put in my first frame to store a cookie but cant find the code.
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Dec 8, 2011
I need a hulu embed video to be 620px in width, what should I set the height to so I don't get the black bars on the sides. I tried to look up aspect ratio calculators online but they all seem to ask for what aspect ratio I need, etc. I don't know what I need exactly, I just want to enter a width and get the height that will prevent those black bars. Anyone know what the height value would be?
[Code]...
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Jul 22, 2009
I would like to have a website with a frame type all around it. I would then like everything outside the frame to flicker sort of like a TV.
Like a SCI-FI type flicker where a signal is being transmitted and broken up.
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Mar 22, 2010
Ive read you can do this with share objects but, have search and search and i cant find a concrete or simple answer to follow.No frame solution please, this does not look good when viewing image on laptop (768 as height)What i am looking to do is create 5 pages with the same flash header. Links will be below the movie. When people click on the links a new page opens (same window) without reloading the flash file.
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Jan 21, 2012
I have a web app that uses a flash uploader (swfuploader) and recently a user pointed us to a bug that happens when the script hangs more than 30 seconds. I know flash documentation mentions that after 30 seconds of no response it will timeout, so i know i need to send some data to the browser before my convert function ends. As of now the script uploads the file, convert it, and if it is a multipage pdf it will save the reference children pngs to db, this works fine on big and small files, problem happens that after 30 pages it will hang for more than 30 seconds.
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Mar 22, 2010
Ive read you can do this with share objects but, have search and search and i cant find a concrete or simple answer to follow.
this does not look good when viewing image on laptop (768 as height)
What i am looking to do is create 5 pages with the same flash header. Links will be below the movie. When people click on the links a new page opens (same window) without reloading the flash file.
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Jun 23, 2008
3D movement in Flash. Basically what i want is to have 2 or > objecton the stage placed on different z axis and when u click on one object it brings the camera forward to the specific coordinates. Then you can also click on another object and it will bring to the new object that you just clicked on.I can do half of it, but actually when one object's z coordinate reaches 0, it flip around and then go at the back.what i want to achieve but how can avoid making the object flip or just tell him to stay where it is so i can always go back to initial position of the camera and then click again on it.
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Feb 18, 2009
I created two swf's, A and B. A is a blank swf, totally. B is has one button on it. Now neither of the swf's has code, animation or any action in it. I open A and B separately in two different Safari windows. When I keep the button on SWF B in pressed state, the finger cursor flickers. Now if I close the window with SWF A and try it again, the mouse hand cursor doesn't flicker. Therefore this happens when two or more swf's are opened in different browser windows.
P.S >> Im using Mac OS X 10.4.11 Intel
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Aug 21, 2009
I have about 6 buttons that have an over state and hit state. I have actionscript that has them going to a url when on the hit state and on roll over it is showing a text label. All of that is working. The issue that I am having is that for 3 of the buttons, they flicker when you roll over them. These are built and coded exactly the same as the others that are working. where I should look for the breakdown? It seems strange that there is a inconsistency unless it is the order of the buttons or something like that.
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Nov 29, 2010
I'm using jQuery Autocomplete just as in this example: [URL] The problem is, the area where you see the Result box in that example - that's where my flash object is. So, when the autocomplete dropdown appears, most of the text is concealed by the flash object (which I can't move). How can I make the autocomplete text appear over the flash object (concealing its view rather than vice versa)?
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Jan 7, 2003
Are there scripts available to automatically animate texts in flash to avoid manual animating such as these:
http:[url]....Are there also other automated scripts related to text?
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Jun 22, 2010
I have a basic rollover function for my button, which seems to work, but whenever the mouse is moved to the right (but remaining inside the movieclip) the MOUSE_OUT function starts happening, and then when the mouse is stopped moving, the MOUSE_OVER code re-activates. I have no other movieclips in front of it, but it is masked using actionscript. I don't understand why it's doing this, because the mouse never goes outside the area of the movieclip, so the MOUSE_OUT function shouldn't activate. The movieclip doesn't change side or shape at all, it just changes colour.
[Code]...
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Jul 2, 2011
Let me sum up the game the best I can real quick and then get to the problem. I cannot upload any code because I am under contract. I also know the code is working 100% correct. The game I am working on will have "X" number of large images. The "X" images will then be broken down into smaller images. I have around 3,000 images, all in the Flash Library, classes are named correctly, the files are named and sized correctly, etc. The game works perfectly on images 1-66. When I get to image number 67, the game SWF starts flickering from scene 1 to scene 2 and then back to scene 1 for a non-stop loop. No matter what image I use for #67, the swf flickers. My FLA is around 300MB and my SWF is 102MB.
So, does anyone have any ideas on why adding a 67th image would make the SWF freak out? Could it be some type of file size issue, graphics card issue, virus, etc? I've tried it on multiple computers both PC and MAC.
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Oct 14, 2010
In Flex4, I use an Image control. After every 10 seconds, i am changing the image programatically using Timer. But when the image changes, flickering occurs. Is there any method to prevent this?
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