ActionScript 3.0 :: Algebraic Or Trigonometric Functions More Computationally Intensive?
Feb 27, 2011
I'm not certain that there's a set answer to that question, so let me give you a more specific example: In my current code, I can solve a problem one of two easy ways: either by using three algebraic functions (one square root and two squares) or by using three trigonometric functions (one atan2, one cos, and one sin). And then I potentially repeat the code for several hundred iterations.
I'm curious if one set of functions is any more efficient than the other, if they're fairly similar, or if there may be a set of higher-order functions I'm missing that can do these kinds of computations much more easily.(For some more specifics, if you're interested: given a line between any two points, I want to find a new point along that line that's a set distance from one of the other two points.)
is it possible to perform inverse trigonometric function using AS3? Actually , i want to calculate the angle of incidence of ball to the wall then reflect back it to angle of reflect.
When setting up a Stage3D's Context3D for rendering, is it expensive / bad practice to switch between Program3D's in an Event.ENTER_FRAME cycle?I don't have an example at hand, but I'm curious to know if there's such situations where this alternation between programs would be used and if the frame-rate would suffer considerably.
I've made a flash file which contains the following:backgroundMC (consist of vector art made in illustrator and imported)holderMC (loads an external swf which contains my game)I want the background to scale when the Stage get resized so I used the following code as everyone else does:
Then if I resize my window the backgroundMC doesn't, because the listener isn't active anymore... Is there a way to resolve this? .I want my Stage to resize the backgroundMC, but without causing my game.swf (which is dynamicly loaded) to run slow...
Lately I have been trying to animate the water surface giving it more natural look by use of Perlin noise. But it seems it is very CPU intensive operation. And if I use it along with other animations on the stage which involve lot of movements then it become really difficult for the machine to render the entire scene.
I am trying to get 50 rectangular MC's to scale larger and fade to another color on rollover and rollouts. However, with the code I am using my processor can't handle it after about 8-10 MC's have been rollovered. Can anyone offer a better way to do this? Here is my code:
I am trying to get 50 rectangular MC's to scale larger and fade to another color on rollover and rollouts. However, with the code I am using my processor can't handle it after about 8-10 MC's have been rollovered.[code]
i have a swf with several processor intensive subroutines within a main init() routine at start up (about a 5 secs startup wait). it needs a preloader not due to asset loads but to the processor intensive routines.i'm trying to create a preloader that will display progress as the routines complete but when i try to write text to text field as each subroutine completes either the textField.text is not updated or the text field display is not updated after each subroutine finishes.this prevents me from tracking the progress of the start up.
is there a way to force an update to the display list in the middle of a processor intensive routine? i believe flash is supposed to update after each frame but i'm not seeing this.also, the text field i'm displaying *before* this processor intensive routine *does* display when running locally but *does not* display before the routine when running online.not sure why.
I 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?
So I'm building a music site for a client, he's got a record theme so I thought it would be cool to build the site to look like a big turn table with all the content on the record.the record is designed to spin (not as disorienting as you'd think, just the grooves spin)...but the record image, which I did in Photoshop, is huge.
It was just slowing things down to a near crawl in browser. So I split the record image into four pieces and then mirrored them to get the full piece of the pie. It worked, but it's still running slightly slow. I do have a couple of blending options set to act as lights over the record...I tried deleting them to see if it would run faster, it's still jumpy. When the record is not moving(there's a button to turn it off) everything runs smoothly. The entire move is about 300k in file size and the record is being animated via actionscript.How do some of these bigger sites get these HUGE animations to run in the background so smoothly?
What options are available for recording a graphics intensive SWF as a video format such as MOV, MPEG, or others. I have created an interactive SWF and would like to capture video of it so that I can share it in different formats. I have used some free screen capture software before, but am not sure it is the best choice since maintaining the frame rate is important. Worst case scenario, I could just eliminate user interaction and automate the input...
I'm about to have to write a web page/app that will serve the agenda for circa 100 people on a page. One line per person, one column per day with 3 clickable zones in each cell. In HTML, the page is way complex for the browser to load quick and there is no possibility to click on a border between 2 cells to for example split an event that spreads among several cells. So I search an not too overkilling technology to render this kind of view. I begun with a PHP generated HTML page but the number of elements in the page make the mouse move jerky.
Moving to JAVA would give me better performances regarding the reuse of the generator of the view but it will still be an HTML page. So, here is my question: do you think that going forward with JAVA and its graphical capability is the simple solution or is Flash a better option for this part of a Web App? I'm afraid of the code I'll have to write in JAVA to handle the GUI presentation as well as the events generated by the 1000's cells plus borders of the page. In Flash, the graphical part seems simpler even if the actions handling is still huge.
My group is working on a Flex/AS3 scientific web application that is data intensive. Luckily the only plots involved are line charts. However, each line chart may have multiple traces (up to 24), and each trace may contain up to 2000 points. The user will need to zoom in and out and interact with the data (e.g. data tips, etc.).
The response I'm getting from developers is that's a lot of data to render in a plot in Flash. For reasons beyond the scope of this post, we can't sample the data to reduce the size (this has already been done and nature of the data prevents further sampling).
Rendering speed is critical for this app. What kind of rendering speed should I expect the Flex 4 line chart component to provide for a given number of points (e.g. 1 second to render 1000 points?)
Are there products available that handle plotting large data sets better, which can be incorporated in Flex (I've seen FusionCharts and ZingCharts online but have no idea how they compare with Flex's components)? Of those, which are easy to develop with while still providing a lot of flexibility in look and feel?
I have a very CPU intensive loop that lasts for about 30 secs sometimes more. The loop is very well controlled and ALWAYS terminates correctly after the solution is found. It cannot hang.
The problem is that the very annoying dialog "do you want to abort the script" pops up in the middle of the loop. It really screws up the the interface as the users thinks the machine has hung. Is there any way to prevent the pop up?
I have a series of calculations i'm doing over a bunch of objects stored in a array. Each function is pretty CPU demanding but if you only run one function, it just works fine.
I've got a project thats getting a bit big, so Im taking the actionscript out into separate as files. I want all the basic functions to be in BasicFunctions.as and the make a library for more specific functions. I find that a lot of people use the import statement but I cant get that to work with a simple Hello World trace, yet the include statement works fine (see attached). I understand that import/include work differently, but which is the better method? If import, then is that heavier to work with. Any rate, what's the best way to organise code when it gets to the 1000+ lines?
I'm trying to find a way to have global functions in my as project, similar to how flash does with stuff like the util functions (describeType()...), where you can just call the function wherever you need it. For example:
[Code]...
So when I call Test(), it prints out "hello world" fine. My problem comes in that I can't change the name of the Test function, and I can't add any other functions without compiler errors. Is it possible to have a load of global functions in one file, or do I have to split them up into separate files like in the example? Also, I know that I can make a Global class and call static functions like Code: Global.doSomething() but I'd like to know if there's a way to do it as flash does it (describeType(), getDefinitionByName(), etc), or rather, how does flash do it?
I have one function that puts text in a text field and makes a button goto a url onRelease.The code is like this:
Code: item.onRelease = function() { myButton.onRelease = function() { getURL("http://google.com", "_blank"); } talk = this.txt; } the only problem is that the button doesn't work onRelease. i think that it is because there are too many functions there, but at the same time,
Functions embedded inside other functions? In all my years of ActionScript programming, I've never seen this (this is part of legacy code written by someone else which I am adapting):
Its a complicated senario for me. I have a sound management singleton with an asset like dictionary storing all referances to my urls and assets and the guff inside it-
I have a function called addItem(id:String, url:String):Object
I would love to do something similar as soundManager.addItem(id:String, url:String).play() or soundManager.addItem(id:String, url:String).stop() of which it'll both add my item to my dictionary, and begin playing the sound
Let's I have a class Square that has a several functions. I want to call it from a class Grid, which is a group of Squares.So in the class file for Grid, how would I do this:
Code: public function doSquareFunction(thisFunction:Function):void{ square1.thisFunction();
I have a function with 4 necessary arguments (aka parameters) in order to perform the actions. I would like to have the ability to pass the same function to itself as an argument (sort of like a recursive function) along with its arguments. Basically I want to "base" to engage an onMotionFinished event handler if there is another function passed as an argument. Something like...
[Code].....
Would there be a way to use listeners to do this or the AsBroadcaster?
the only problem is that the button doesn't work onRelease. i think that it is because there are too many functions there, but at the same time, i think it's just me..
I have some buttons on a stage that when click change the scale and the position of another movieclip sitting on the stage. All works well but I'd like to make it bit more....cool
Is it possible to tween, maybe with an ease, between the current position and the position when the button is clicked?
