ActionScript 3.0 :: Improve Performance By Using Multiple Air Apps?
Feb 17, 2012
I have a program that is decently complicated in one area and the rest is simple. The complicated stuff is data crunching, pretty much. Would I get an increased performance by doing the data crunching in a second app and just having it send the couple bits of info I want from it to my other app that would be the front end of the program? Or is this a dumb idea? I know air doesn't by default multi thread, so I was just trying to think of a "work around."
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Mar 19, 2012
We have a medium size Flex 3.6 application that contains around 20 different page views (managed via a single lazy ViewStack) each having multiple components. Most use custom renderers.All model data is loaded at startup and changes to model instances are communicated via binding and/or collection change events.Once the user has viewed each page at least once, all page views are instantiated and happily listen to update events.Which in effect means that each time a model instance changes, all interested views receive that event and compute derived data or trigger item-renderers.I have tested and confirmed this behaviour in a proof-of-concept application. Even when setting a list to being invisible, it still listens to collection change events and invalidates any renderer affected.What would you do?
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Apr 9, 2009
I understand Core Animation is Objective-C specific, and I am NOT familiar with developing AIR applications, but I was wondering if there was some how a way to trigger Core Animation through developing an AIR application? Don't AIR apps become native to the platform they're developed on?I just want to find a way to improve video playback through flash apps.
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Jan 19, 2010
I am working on a flex application. The application occupies 100% of the browser screen, but it is slow to load. How should I improve the performance, what are the best techniques one should follow for improving the performance of a flex App. I did try some stuff though, I am not using relative layout instead i am using absolute layout and putting the buttons/images etc at exact places in a Canvas, still i feel it is slow. Can I profile the App or flex code to see where exactly the app is taking the maximum time to execute.
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Mar 25, 2011
I have two FMS 3.5 streaming servers... Both have Windows Server 2003 x64 with 16 GB of RAM..I'm streaming from a common storage and my Application.xml file is like this:
<Application>
<StreamManager>
<VirtualDirectory>
[code].....
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Jan 31, 2011
I am using the Open source PurePDF library in my Flex AIR application. The problem is performance:It takes 100% CPU usage and too long to generate a PDF.
I have done some analysis on it and find that the text writing in pdf is expensive. That's why I need to know how I can improve the performance. Are there any fonts for which pdf generation is less expensive, or is there some setting or tip that can make this process somewhat better in terms of performance? secondly in case of images the ImageElement generation is very expensive when writing that element to PDF. Is there any way to reduce the processing?
I found a way to reduce the ImageElement generation processing by resizing the image using flex and by then passing the small image's bitmap data to the image element. It works fine, and i have reduced the time of execution to a good extent. is there any way to tell PDF to work in chunks or divide the work in such a way that it may take more time to complete but won't block the GUI while the PDF is being generated?
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Sep 9, 2010
I am a bit new to using blitting for graphics. But I have worked up a few demos myself, and I have been reading a lot of information on the methods used. One common theme I have been seeing though is that all of them brute force rendering; drawing the farthest back object first and stepping through all other objects. even drawing objects that are going to be completely overlapped. The reason all of them say this is that any kind of testing to see what should be drawn actually takes more time than just drawing everything with no checks. Is there any kind of way to detect what should be drawn, that will run faster than just drawing everything?
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Oct 22, 2010
Am currently working on a tool created by a colleague of mine and would like to improve performance. Basically, it's a tool for drawing on screen and uses a combination of Sprites and the Graphics class to draw a line segment every time the mouse is moved when the mouse button is down. Here is the drawing bit:
// on MouseMove
protected function drawLine(e:MouseEvent):void {
if (currentTool.thickness > 0){
//pen
var line:Sprite = new Sprite();
line.graphics.lineStyle(currentTool.thickness, currentColour);
[Code] .....
As you can see, it checks if the line 'thickness' property and draws if it is and erases if it isn't. I did think of using a technique similar to blotting here where it'd draw to a bitmap but I'm not sure this'd give the performance boost I want or if, indeed, there would be any way to have an eraser function. The drawing itself works nicely - this isn't the problem, it's the performance of the subsequent 'drawn' sprites.
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Apr 26, 2011
Background: I am using SQLite database in my flex application. Size of the database is 4 MB and have 5 tables which are
table 1 have 2500 records
table 2 have 8700 records
table 3 have 3000 records
table 4 have 5000 records
table 5 have 2000 records.
Problem: Whenever I run a select query on any table, it takes around (approx 50 seconds) to fetch data from database tables. This has made the application quite slow and unresponsive while it fetches the data from the table.
How can i improve the performance of the SQLite database so that the time taken to fetch the data from the tables is reduced?
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Aug 6, 2009
I've been building a project that is essentially a mashup style editor. You pick from a series of clips, arrange them in order, and then can play them back. Originally it was a series of FLVs that would play one right after another, one stops, next one starts, but this wasn't seamless. So I switched to embedded FLVs inside of SWF files.
Locally this performed better, the videos were more seamless, no gaps where the video disappears because the FLV isn't ready to play, but online it brings the flash movie to a crawl. In total I have 56 video files, either FLV or SWF. There are 4 "tracks" that play simultaneously. Each track is made up of multiple clips. I'm preloading the videos so they are ready for playback when the time comes. The videos are alpha transparent.
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Mar 20, 2011
I'm working on a simple real time graph. The data is polled every 50ms, and each poll translates to a line one pixel wide, (data_point) pixels high. The graph scrolls such that new data is on the right, and the oldest values eventually fall off the left.
My solution is embarassingly brute-force, in that I just use theMC.graphics.clear() and a loop of lineTo()s for every graph refresh. While this displays correctly (and I can control the refresh rate to mitigate the CPU burn), it should be painfully evident why I want to move away from this method.
I want to programatically scroll or pan the entire graph one pixel to the left (and drop the leftmost line), and then just draw one new line on the right, but I can't figure out where to start. Assuming such a thing is possible in AS3, would someone be so kind as to point me in the right direction?
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Jan 25, 2011
There is so many ways to improve the actionscript performance and reduce code size. Let share what tricks you can come up with.
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Mar 18, 2011
In flash, if you have a complicated graphic (like a complex diagram) that doesn't change much and you want to move/zoom/rotate it around, then does Flash perform better if you convert all graphics into symbols? Or does making symbols slow things down?
Background: Sometimes, you do things for so long, you can't remember why you started in the first place. Whenever I import graphics in flash (like from Illustrator, for example), I select everything, press cmd-B (or ctrl-B on Windows) repeatedly, "breaking apart" everything until I can't, anymore. Then I press F8 and create a symbol.
That's just what I've done for like the last 10 years. It's to the point where I don't even think about it, anymore. I vaguely remember doing this after learning that performance improves when you break apart graphics to create a symbol.
Now, I have a problem: I'm translating/rotating/scaling a massively complex, static diagram and it's too sloooow. I'm trying every technique I can think of to speed things up—every little bit counts.I've read this link and lots of others but I haven't come across the topic of creating symbols.
Summary:should I go back through and make everything a symbol? Should I go through and make everything NOT a symbol? Which is faster?
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Jun 21, 2011
I am using the Camera on Flash, but when I finish to use, now can I "destroy" the camera object for improve the application performance?
private var camera_atual:Camera = Camera.getCamera();
private var video_camera:Video = new Video(820, 546);
camera_atual.setQuality(0,100);
camera_atual.setMode(550,480,30,true);
video_camera.attachCamera(camera_atual);
this.palco_mc.addChild(video_camera);
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Jan 18, 2012
I've been doing a little bit of reading about Stage3D, which will be a new API used with Flash Player 11.Will this API improve the performance of 2D rendering (Vector) in any way, or will the library be used primarily for rendering 3D?
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Jul 31, 2009
For poor performance reasons, the DataGrid will cache checkboxes and reuse them for different rows. If you have 50 rows, it won't create 50 checkboxes. It will create as many checkboxes at are visible, plus a few more for padding, and then reuse them as you scroll. This is why you need to explicitly manage their state. How can improve it ? How can fixed checkbox value ? i used checkbox like below But checkbox doesnot remembering the values
[Code]...
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Jul 6, 2011
If I try to add ~70 High Resolution Sprites to a PrintJob using addPage() in a loop, I suffer a lot of slow down and performance issues.I am thinking I should perhaps create individual print jobs for each page, or maybe batch them together.
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Oct 3, 2011
I have an application with about 20 models and controllers and am not using any particular framework. What is the best practice for using multiple remote objects in Flex performance-wise?
1) Method 1 - One per Component - Each component instantiates a RemoteObject for itself
2) Method 2 - Multiple in Application Root - Each controller is handled by a RemoteObject in the root
3) Method 3 - One in Application Root - Combine all controllers into one class and handle them with one RemoteObject
I'm guessing 3 will have the best performance but will be too messy to maintain and 1 would be the cleanest but would take a performance hit.
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Mar 3, 2011
I have a Flex application which has to be deployed in some server. The typical form of access would be invoking the URL. Should I have multiple instances of the applications running on the same server/ deploying the application in diff servers and using a load balancer for routing? If i must have multiple instances, how to do that? On a given day, the application is expected to get around 2000-3000 hits. What are all the factors to be kept in mind while deployment?
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Oct 27, 2011
Basically I'm building an image gallery. Rather than thumbnails, it just loads the full size images and masks them, so they can all be scrolled through. (I made an intuative preloader for this). It all works fine. The only problem I see there being is performance, when there's quite a few images.Could anyone suggest a way to reduce the load, and make it a bit more memory friendly? I (stupidly) thought that masked out images wouldn't render. I think I'm wrong though? I thought maybe I could make the images off the screen set to 'visible = false'?
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Jun 17, 2011
I want to create a flash program that tracks mouse and keyboard biometrics such as mouse movement speed, click rate, length of keystrokes and so forth. How can I ensure that if a user duplicates his/her actions across multiple machines with varying processor speeds I will record the same data?
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Feb 23, 2011
I've created a grid of 3D cubes using modulus, and the 3d cubes are were created from the Math and Flash Tutorial, if you are interested it is here.What I am trying to accomplish (and it works, just the performance is lousy). All the cubes in the grid are inactive until the mouse hovers over them, then they start to rotate, and once the mouse moves off them they continue to rotate...
So to create the grid of cubes:
Code:
public function FlowerMenu(){
var rowY:Number = 0;
for (var i:int = 0; i < 190; i++) {
[code]....
So, this works, but after about 4 or 5 cubes have started rotating the performance drops considerably. I can imagine creating that many EventListeners isn't a good idea, but I can't see any other way of doing it.
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Sep 12, 2011
this is what i'm trying to accomplish; With a click on a movieclip (cannon_mc)a shot is being fired (ball_mc)
The longer mouse is down, the speed of wich the ball is fired with should increase.My question to you is;
What is the most efficient way to accomplish this? With a timer or something like this;
[Code]...
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Jan 11, 2011
I'm devloping some library classes for flocking/steering behaviours on large numbers of objects (2000+). I'm finding that at < 500 instances, performance is reasonable. As the numbers increase, framerate bogs down.
I've seen remarkable performance with libraries such as Flint or Box2D with ridiculous #'s of particles / objects, so it should be possible to optimize / refactor my code to be a bit better.
I'm aware of the basic optimizations, such as bitwise operations and optimized for loops. Are there any more fundamental approaches I should be considering? For example, currently each instance is a vector-based MovieClip. Would working with BitmapData be more efficient?
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Nov 4, 2011
Will I take a big hit in performance using nested ViewStacks? Should I strive to handle all navigation in one ViewStack and push children manually or will the affected performance be negligible?
eg.
<viewstack>
<tabnavigator />
<tabnavigator />
<tabnavigator />
</viewstack>
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Jul 14, 2010
There is no maintainAspectRation property for video object.Then how to improve the quality of video when even we resize the video dynamically.It has to maintain good quality.How to achieve this.
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Jan 31, 2009
I'm playing around with Flash CS4 trial and tried to 'compose' a 3d Box by putting 6 MovieClips as the side elements of the box in one clip which represents the whole box. (only using the Flash Tools, no Actionscript). Within the BoxClip (after doubleclick on the BoxClip on stage), all sides look right, each side is positioned with the correct angles and coordinates. Outside the BoxClip, back on root stage, the box sides are not parallel anymore, the angles are not 90 degrees, there is no 'box' actually. So I guess, one of the problems is the 3D Center point of the objects which is absolute to one point in coordinate space. The other problem is the faulty '3D' display in Flash, that is, changing from inside to ouside a clip changes the view also. So far, the Flash GUI seems quite useless for doing some '3D'. How to improve the workflow?
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May 28, 2010
The quality of sound when playing my flash file on the timeline in flash CS4 is excellent, however when I go to test movie the sounds quality becomes awful, like its being played in a tunnel on terrible speakers, my sound files are .wav files, am I missing a process I must do to ensure the quality of sound is carried through to the final published animation?
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Feb 24, 2010
I am using Helvetica Neue 43 Light and it looks great as Dynamic Text without embedding the fonts. It is nice and bright, sharp edging, etc.
I notice though, that on other computers, the Helvetica Neue font is displayed as Times. I am presuming because these other computers do not have Helvetica Neue installed on their computer system.
If I embed the fonts, it looks the same as static text or text that I have broken apart. The fonts are thicker and has blurry edges.
Is there any way of getting around this and have my Helvetica Neue looking sharp and crispy like dynamic text without embedding the fonts.
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Feb 14, 2007
Been reading up on the flash transition object. I came up with this way of fading out one clip and fading in another and having them loop forever using the transition objects but it's very dirty coding and not very flexible.
Is there a way to clean it up so that I can add as many clips as I want without having to write more code, just by adding more movie clips to the stage?
[Code]...
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