Does anyone know if there is a (preferably efficient :-) ) implementation of elliptic curve cryptography for ActionScript? The only library I know of is as3crypto, which offers great implementations for symmetric cryptography, hashing and several other cryptography-related operations, but it has only RSA for public key cryptography.
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I was hoping someone could help me working out some advanced data reformatting. What I'm hoping for is a function where I can input a value along with an array of key positions like so:
function remap(percentage:Number, keypoints:Array) { ...
The array would start with the minimum and end with the maximum point, with nested key points along the way. For example, I would input something like remap(0.25, [0:0,80:50,100:100] ) and the function would 'imagine' a spline curve graph from (0,0)-(100,100) with a key point of (80,50), then return the y value that is 25% along that graph.
I want to curve a dynamic text from a straight line to circular curve (using a slider). I have placed the characters of the string in each textfield created at runtime.
View 3 RepliesI have a curveTo an anchor point and a control point.Then I have a function that will return the x and y of a point along that curve if I give it a number as a percentage of the curve (0 to 1).It looks like this, and works perfectly..
Code:
function drawOnCurve( interval:Number, x0,y0,x1,y1,x2,y2)
{
interval = Math.max( Math.min( 1, interval ), 0 );[code]....
x0,y0 are the start point, x1,y1 the control point and x2,y2 the final anchor point.But... I want to give it a _y value instead of a percentage (interval) and it return where on the curve that would intersect.
I'm looking for an easy way to compute SHA 256 in Action Script on the BlackBerry PlayBook. I saw the mx.data.crypto.SHA256 class that seems fit for the purpose but it looks like it is not available on the standard PlayBook libraries, or do I need to import any specific SWF? More generaly, if you know of an easy-to-use cryptographic library for Action Script, I'd welcome that too.
View 3 RepliesThis is working, but is this a good example of polymorphism?[code]...
View 1 RepliesI'm implementing the RTMP-protocol for my bachelor thesis. I got through the handshake and application connect process and received the play-command from my client which is actually a jw player.But I now stuck with the audio and video-messages. I can't find something about the exactly built-up of these messages neither in the specification nor somewhere else.What should i do with the metadata and header of the flv-file? Can I send the whole tag and audio-/video-data from my file in the RTMP-audio- and video-messages?
View 1 RepliesDoes Flash have a way of emulating Hashsets or Hashmaps? If it doesn't, what is the best way of storing and quickly retrieving 10-100 thousand entries of data?
View 14 RepliesI am trying to convert our all-flash website to HTML 5.But since so many users still use IE and other browsers that do not support HTML 5 yet,I am looking for some flash media players that can replace <audio> and <video>. My google skill does not yield good results.The flash media player should dispatch events specified at https:[url]..._audio_and_video_in_FireFox (or at least talk to javascript some how for those events).Do you know a flash media player that can easily be embedded inside <audio> or <video> and talks to javascript for events?
View 2 RepliesI'm optimizing a PNG encoder for use within Flash SWFs (but I'm writing it in HaXe).I've so far managed to speed things up a fair bit, mostly by using speedy memory read/writes.While profiling my code, I noticed that about 75% of the time is spent in a single call to Flash's built-in compress() method, which uses the zlib algorithm (which uses DEFLATE in turn).I'm not too fussy about compression ratio, but faster compression would be awesome. So, I was wondering if it's worthwhile to try to implement zlib/DEFLATE myself. A little searching has turned up the zlibC.implementation source, but it's not exactly light reading (or easy to port!).Are there any simple implementations of zlib/DEFLATE that I could use as a starting point? I'd rather not have to wade through the two specs, especially since I don't know whether an implementation running in AVM2 could even perform as fast as the native Flash one in the first place.
View 3 RepliesI just upgraded out Flex project to use SDK version 4.5.1.21328 and the Flash Builder to version 4.5
All of the sudden, I'm getting several red tags on the Flash Builder: "could not resolve s:State/fx:Script/whatever to a component implementation"
However, the project builds fine with Maven, and seems to work well too.
Does anyone have any information on how to remove these "problems"?
I've been wondering if it's possible to change the backend of the LLVM implementation from ARM to something else for instance C or C++? Currently Adobe uses a Actionscript3 frontend (which I can't currently find - closed source?) for the LLVM to produce iOS applications. I'm wondering why there isn't more options for other backends? Of course there are limitations to going this route, no loading of external swf files at runtime (to name just one), but the iOS applications seem to manage really well with this feat. I did find this pdf which talks about the AS3 LLVM frontend, but no guidance to where the code is or how to investigate... I just think it's a missed opportunity that Adobe are missing and wondered how much work it would be to do such a feat?
View 1 RepliesHow to attach text to curve or path in Flash CS3 to look like this:
View 1 RepliesWith the select tool, I placed my mouse over the edge & it changed to the little curve sign, but when I dragged it, it just moved the rectangle. Same thing when using the transform tool.
View 3 RepliesI'm building a simple white board app in ActionScript 3. Most white board or painting apps in ActionScript tend to use an interval, timer, mouseMove event, or enterFrame event to track the mouse position and paint lines or brushes in between the tracked points.
What I'm trying to achieve is the nice smooth painted line that a program like Photoshop can render while painting with the brush tool. In Photoshop, no matter how fast you move the mouse around the canvas, the painted lines always end up with a nice smooth curved edge. In my app, using any of the methods mentioned prior, there is always latency between the function calls that render the brush to the stage. Thus, using any of those techniques can result in a sharp cornered line when moving the mouse very quickly in a circular manner.
This is no surprise to me, I just have no idea how I could achieve a smoother line like Photoshop's brush tool. Mind you, the brushes for my app are mostly based on shapes and do not or cannot use the drawing API to draw continues lines. In other words, graphics.curveTo() is not an option. I am also rendering the Sprites or Shapes generated by the brushes to a BitmapData instance.
I need to implement a drag and drop functionality, where I can define and constraint the route of the draggable object.[URL].. only that i have the paths designed and not calculated by a math function. So, in fact, as mouse moves I need to tell the object to follow the custom path/movieclip.
View 1 RepliesThere are two Sprite's hit tests, one check the object (and have no precision on the curves) and the other check a specified (x, y) point. But, having curves drawn using Graphics.curveTo(), how do I check if 2 drawn curves are colliding?I'm not sure if this is an actionscript or a math problem..I want to check all (x,y) of a curve to all (x,y) of the other curve..
View 1 RepliesIs there a way we can apply curve to an dynamic text which is in vertical direction?
View 1 RepliesWriting RTMP Streaming Server for streaming AVC+AAC video. And it works fine with rtmpdump. But I can't force it to work in flowplayer and other flash video players.The message sequence after handshake is similar to FMS / RED5 / erlyvideo / haxevideo servers: I've tried a lot of variations.
From Chrome debug console I can see, what all negotiating messages passed to the flowplayer. The last one is onMetaData. And after this the working sample (rtmp://flash.tvwmedia.net/LiveVideo//Live300) gets NetStream.Buffer.Full. And streaming from my server don't get it.
I'm starting with AVC Header message, containing sps/pps. After it first AVC picture passed. After - AAC header and AAC sample. And then AVC/AAC samples. This dumped OK by rtmpdump - I have working flv on exit. But flowplayer and others does not work.
[Code]...
Is there an open source implementation of rtmfp?Is there FMS hosting that support rtmfp?
View 2 RepliesI want to put an IRC client in my webpage. I know there are many clients but not opensource ones (I didn't find any). So, do you know some free and open source projects to implement an irc client on a webpage? I mean is it a good idea to have one made in flash?, one made in html5?, one made in javascript/php?.
View 4 RepliesAll the program does is you click a button and it tells you how many times you clicked the button in a textfield. Document Class: This is the entry point of the code.
[Code]...
Is something like this possible in Actionscript?
Java:
URLFetcherFactory.setCreator(
new IURLFetcherCreator() {
public IURLFetcher create() {
return new URLFetcher();
[code].....
I have been trying to implement the Round Up Power Of 2 algorithm outlined in the following link in AS3.
[Code]...
The algorithm works great for most of the values I've tested. It is mentioned that this will return 0 when given an input value of 0 which is technically incorrect but I'm ok with that output. What I'm not ok with is when given an input of 1 I get and output of 1. I'm thinking that this must be a caveat of AS3 and its wonky uint implementation but I can't seem to figure it out. I have also tried using the >>> logical shift operator to the same result. My C is a little rusty, but I'm not sure how this would even return 2 in C. Can someone explain to me whats going wrong here? I assume if an input of 1 was a special case it would have been mentioned in the above link.
I have created the following classes for sharing images. They implement an interface, but I need a way of switching between them with user interaction. I've done it the following way:As you can see, service 1 and service 2 implement iSharingServices, and inherit from PolimorphSharing.PolimorphSharing is simply and an abstract class that implements the methods I want public from Service 1 and Service 2. Those methods will then be overridden on the Service 1 and Service 2. Because I need a way to switch the service in runtime, I've created a gateway class that inherits from PolimorphSharing. I can then call it the following way:
private var sharingService:PolimorphSharing = new SharingServicesGW('svc1').createService();
This all works flawlessly, and I can now switch between services with no problem whatsoever. However, I feel there's something wrong about it, so I would like to ask you guys for some advice on how to better implement this.
UPDATE:
Just adding some more insight to this. Basically the idea here is for my client to be able to upload images with various different public sharing services such as imageshack, imgur etc. I want my client to be able to select the service in which the image is to be published to (hence the "switching between them with user interaction" bit of the question.
The method that does the uploading bit, is requestShareImage(), processResults() simply turns whatever gets returned to a unique format, so my client can read off it always the same way. getObject() is my accessor, and onIOError will handle exceptions with any of the public API's
as we know, the Timer class flash gives us does not support any pause/unpause functionality. if you stop and then start a timer, it resarts at the beginning of it's interval period, advancing the repeat counter once. sometimes you want to pause the timer mid-interval, and resume from where you left off I have seen one attempt at a custom timer subclass that supports pause/unpause, but it was pretty shaky anyone actually nailed this?
View 4 RepliesTesting this function and running it 11k times on a shape where I use:
shape.opaqueBackground = true; shape.cacheAsBitmap = true;
Is extremely slow.. It seems to take 4 to 5 seconds to check a 101 x 101 tectangular area.I'm wondering how it is implemented...I know the code for the SDK is available?I can 'getPixel' from a bitmap to get the very exact color of that pixel in 1/1000 that time.If I happen to have the bitmap data.But with a shape that is already 'treated as a bitmap' (see above) using hitTestPoint can stop your system. It should not be vastly inferior to work with Shapes than it is with bmp data..
I'm trying to implement class ImageViewer in AS2 (Actionscript 2).Here is the full source attached:
[URL]
I receive an error.I'm not sure if container_mc is the instance name of the image that is converted in movieclip symbol.
is there any way to build html WYSIWYG in flex like Microsoft front page? i didn't found any thing on the web like this? second question is : is there any good rich text editor that support text completion function like ( like code IDE 's )
View 1 RepliesHow do I do this in Flex 4?
<mx:RemoteObject id="srv" destination="product" channelSet="{channelSet}"
fault="faultHandler(event)">
<mx:method name="getProducts" result="getProducts_resultHandler(event)"/>
</mx:RemoteObject>
I got
Could not resolve <s:Method> to a component implementation.
When trying to do this
<s:RemoteObject id="roMajor"
destination="MajorSrv"
fault="Alert.show('Remote Object Error')" >
<s:Method name="AddMajor" result="roMajorResult(event)"/>
</s:RemoteObject>
