We are starting to build a Flex 4.5 application (with LCDS) and a Spring/Hibernate based backend.In this context, is there a well-known list of overall performance optimization techniques that one could follow to ensure optimal performance on the client (flex) side? - especially, given that we anticipate users with poor bandwidths
View 1 RepliesI'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?
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?
View 2 RepliesI am trying to improve the frame rate of a game that draws many floor tiles. Currently, the floor tiles are vector graphics and stored as different frames in a movie clip. I wanted to experiment with rasterizing a floor tile and seeing if that would provide any frame rate boosts. I did this by converting one of my tiles (one of the frames in my movie clip) to a png and replacing the vector version of this tile with this raster version. I then tested two worlds--one filled with tile A (vector) and another filled with tile B (png).
In all my tests, world with tile A (the original vector version) outperformed the world with tile B. I am guessing that the reason I am not getting the expected performance gains is because I am still rendering the tiles in the old style and not using any strict bitmap drawing calls?why it is that this method fails to boost rendering speed? Would I have to switch my rendering code to strict bitmap draw calls?
Any tips and techniques to optimize the performance of online flash games.
View 1 RepliesI am setting out for a visualization project that will generate 1000+ sprites from dynamic data. The toolkit I am using (Flare) requires some optimization. I am trying to figure out some optimization techniques for Flash. How can I make Flash run fast when there are so many sprites on the stage, or maybe there is an optimization technique that doesn't involve generating so many sprites?
View 1 RepliesI'm developing a Flex front end client for a Java server application and I have a set of model classes that represent objects in my business logic and should have the same properties and exhibit the same behaviour throughout all layers. These objects
-Have form validation logic for user input
-Are displayed in various forms (lists, detail views ...) throughout the UI
-Are retrieved from and sent to the server using XML or AMF
-Are validated again on the server
-Are stored in a RDBM with tables and fields corresponding to the classes and fields
This is a very common application structure, I guess. I'm already using:
ORM for the Java backend (Eclipse persistence package)
Automatic mapping from XML to Action Script, using XML schema and the classes in mx.rpc.xml, as described here.
Now, what I'd really like to do is define the objects once (I already have them in XSD) and have tools set up class stubs for the whole chain. What can I use?
I've already heard of (but not evaluated):
XMLBeans to generate Java classes from XML Schema
Granite DS to generate AS classes from Java classes
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?
View 3 RepliesWill 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>
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?
View 1 RepliesI have a method, which connects to a HTTP server and requests via XMLRPC, a list of data structures and then for each data structure gets a list of attributes and the values of those attributes. It's implemented using nested for each loops.
The problem is that it's loading a lot of data all at once, and consuming a massive amount of CPU (over 100%) reading responses from the server and parsing the XML.
If I were writing the program in C, I'd insert a usleep() at the end of the loop, to wait before trying to load more data and reduce CPU usage. What would the equivalent be in Flex?
This article on Livedocs says you should add the database name in front of tables.[URL]..My question is, should I do that everywhere where a table name appears or only once?In this query: select T1.col,T2.col from T1 left join T2 on T1.id=T2.id order by T2.order;
Should I add main.T1 and main.T2 everywhere or just after for, the first time: select T1.col,T2.col from main.T1 left join main.T2 on T1.id=T2.id order by T2.order;
I have a drop down list for selecting the titles for a person, I want to employ smooth drop down when i select the drop down menu.
View 1 RepliesI'm going to write an application with the Air/Flex-Framework. I'm looking for Best Practise and general Design Patterns for designing software especially in Air/Flex. I have experience with this framework but never had the pleasure to write a piece of software from scratch.
For instance: I stumbled across lots of software written in Air/Flex with nearly infinity global vars Most of the software I saw was not object-oriented How can I pack the asynchronous method calls nicely?
I'm familiar with general design patterns by gamma. I'm looking more for advise in designing good quality software with Adobe Air/Flex.
I want to make a turn base strategy game. I was just curious if anyone had any sources or books that explains the concept and architect of designing a turn based strategy game or any turn based game.
View 2 RepliesI've found two good techniques for implementing menus with an active state, these are not mine. One is very simple but elegant. The other is more script. But who says more script is always better? Could I get some opinions on which you prefer and why? Do you have a better technique perhaps?[URL]..
View 3 Repliesthis 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]...
I have two web applications written in Flex I would like to integrate. I would like one Flex app (let's call it application A) to invoke second Flex app (let's call it application B). Application A has access only to swf file of application B (not source code). When application A invokes application B, it should be able to pass some data to application B. After application B is invoked it should be able to pass some data back to application A. These two applications will be hosted on the same server, but will use different server code.
The easiest way of implementing this (or one of the ways to be more precise) would be to have UI element on app A (button, link, menu item, etc) that would invoke app B. But in that case, two Flex applications couldn't communicate directly (since only one is active at a time), and they would have to communicate through server code, which is something I would like to avoid.
In short application A should invoke application B, pass some data to it. Application B should do it's work, display some content, and have a mean of passing some data back to application A. I'm aware of LocalConnection, and I've seen similar question, but in that case I would have to have both application in the same browser window. This would be acceptable to some extend, but only if app B is contained in app A (not if they are both on the same HTML page). Would LocalConnection work in that case?
Do you have any recommendations on how to implement this kind of communication?
I have an object in Papervision3d that the user needs to be able to zoom into a considerable amount. At Flash's maximum bitmap size of 2880x2880 the texture is too blurred at the maximum zoom. Even going beyond this to the sizes available in Flash 10 do not help.Is there any way to build a BitmapMaterial that can pull from a set of tiled 2880x2880 images?Is there any other way to load a larger texture into Papervision3D?
View 1 RepliesIs it possible to get list of installed AIR applications, optionally only by one vendor?
Or, is it possible to check, whether is one application (checked by name/some id/vendor) installed (this method would be preferred)
I want to play Audio in flex application.I am using SWFLoader for it.Is there any other way to load audio into Flex applications.
View 1 RepliesI cannot afford the Creative Suite or Flex Builder but I would like to develop a commercial Flex/ActionScript AIR application. Is this a viable goal and are there robust tools out there that don't cost a small fortune?
View 2 RepliesI have an AIR application that is packaged with a network appliance and that is used to configure that network appliance...much like a the embedded webservers on home routers except this is an installed AIR app.
If I want to communicate with the appliance on a port higher that 1024, do I need that appliance to serve up a socket policy file or is AIR considered a trusted sandbox. All the info I find relates to Flash Player and the web, but this particular AIR app is communicating in a closed environment.
we try to develop a flash game engine with several abstraction layers. This flex project contains: an Application (1)-> loading a class (2)-> loading another class (3) which instanciates a Flex component (4).
The loadings uses SWFLoader. The last Flex component (4) is just a Group with AdvancedDataGrid. We do not define skins so I suppose it must take default skin.The problem is that during execution, an error is throwed because default skin for components cannot be found in the Flex component (4). In our case, for the AdvancedDataGrid:
Error #1007: Instantiation attempted on a non-constructor.In mx.controls::AdvancedDataGridBaseEx. The guilty command is: getStyle("headerSeparatorSkin"); which returns null
For the moment, we found two solutions :
the first solution is to add the attribute headerSeparatorSkin="spark.skins.SparkSkin" into the AdvancedDataGrid of the Flex component .
How can align my application to the left in Flex ? The application is horizontally centered and when I resize the browser window it stays centered. It is not css padding, it is flex padding, so I guess I have work with Flex code.
I've tried to add the following properties to the Application container: paddingLeft="0", left="0".. but it doesn't work. Still centered. I've also tried to set "align","left" in the html/javascript code, but it doesn't solve the issue, because the padding is inside the flex application.
I have a requirement to print a bill from the AIR application.
Following are the constraints.
I need to print to a DotMatrix Printer. I have a complex layout with header, footer and a datagrid with data rolling out to more that one page. I need to have a template to which I will be passing my object.The suffice with the usage of Jasper reports, but I have no server side support.I tried the FlexReport, bentbit and other tools which is optimized for the DotMatrix printers.
Is there a alternative to get the above requirements done. Is there any alternative similar to that of jasper reports without going for a server.
When I'm making projects with Flex (or Flash Builer) the end result usually performs much better than a similar level project made with the Flash authoring tool. I know Flash IDE is rather for animations and design heavy works so you can't really compare these 2 tools, but this question is bugging me for a long time.If apps made with Flex (or Flash Builder) are really faster and less CPU intensive - why is that?
View 1 RepliesHow to forward attachment(for example image) from Flex or AIR application to email client? For forwarding email address, body and subject, I use this:
var s:String = "";
s+= "mailto:";
s+= g.text;
[Code].....
I am a beginner in this so I am not sure what would be better. I read that Android API is targeted towards Eclipse, however, I read that Flex allows you to use your apps on Android and iOS at once, reducing the need for two apps.
The kind of app I am building will involve reading data from the gyro, and making some calculations, then reporting it to a server.
Is it possible to make applications for iPhone using Adobe Flex/AIR?
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