Flash - How To Implement Undo And Redo Feature In AS3
Nov 16, 2011
I am going to create an application in that i have to implement an Undo and Redo feature. In the application there will be multiple objects located on stage and user can customize the position of the objects. But when user clicks on Undo the object go back to their default position and after clicking on redo object will move on the new position. So my question is how can I apply these feature in my application? Is there any library or any third party classes?
i'm making a drawing tool in flash with the ability to draw shapes, put text, etc. i need to incorporate undo/redo facility in it. is there some efficient way to go about it? or will i have to go the hard way, remembering in some way the last three actions performed by the user in an array or stack or something??
Im wondering how to implement undo redo functionality with a TextArea. I already have an undoredo framework functionality working, now I have two questions.When do I start/stop a new undo/redo command, eg when a user hits undo, how far back do I go. How do I implement this(1.) in a normal TextAreay thinking:I thinking that I should create a new undo command, when anything but a alphanumber+space is hit. To do this I would use the keyDown event and test if the key is alpha num if it is not I will reset the command.
i've been unsuccessfully attempting to create my own undo/redo classes that work well with any type of possible undo and redo commands.
for example, my simple class works perfectly with undoing/redoing x and y positions of display objects or undoing/redoing values of sliders, etc., but things get dicey when i try to tailor my classes to also work with things like adding and removing items to a list.
is there any well known and well documented solution for general undoing and redoing for actionscript (without Flex)?
Loads an image to an Image component Transform the image (rotate, flip) with the Matrix Apply filter(s)
Now I am thinking about to create some undo redo functionality. Each time I do a transformation / add an filter I want to be able to go back to the previous image (before the action).
My thought is to have an Array and add the previous bitmap to the stack. But I see that there are some differences between transformations and filters I have also seen the ImageSnapshot and whot i can do and it looks like what I am after.
I need to finish this code, the remove child works and removes the character mc, but I want to remove a fair few event listeners, so I can implement a drag and drop feature. My problem is would I need to list all the listeners to stop them on this frame? And this should only effect the listed listeners and not the new code for the drag and drop?
I have been trying to implement a feature from a game called 'Tanks' (can be found at: mathsisfun.com/games/tanks) into one of my games. This is where upon shooting and destroying the dirt with explosives, all the dirt above it, where the explosives didn't reach, falls down.I have been trying for a while to get this effect to work, but with no success. My best attempt is atta hard to explain!). Even though the particles of dirt are so much bigger, it still lags like there is no tomorrow.
I have recently received a copy of the Adobe eLearning suite, in particular I hope to use Flash for the majority of my elearning projects.I have been having trouble using the learning interactions that come ready to use with Flash. For example,I placed the drag and drop interaction onto the stage area, but when pressing F12 to preview and use this feature it would not work (could not drag the movie objects), the same goes for all the other features I can select radio buttons etc but when pressing the 'cheack answer' button nothing happens.Even though these interactions come with instructions which i have followed, it still does not seem to work. I do not wish for them to be scored, I just want the user to receive correct or incorrect feedback.
I have a Flash application with one scene, three frames and a bunch of ActionScript code to provide a number of ExternalInterface hooks. The three frames contain a single Input Text box which, as the <embed> tag is resized using JavaScript, grows and shrinks (not scales) to fit. I now want to add the ability to zoom in/out of this application, for enlarging small text on screen without increasing the text point size. I thought this would be easy using the Javascript Zoom(percent) method of the Flash object, but this doesn't work because my ActionScript code contains:
[Code]...
I suspect I need to take the entire movie as I have it now, and put it inside a movie clip, add a zoom ExternalInterface call which somehow scales the movieClip, and move the External Inteterface methods I have now from the new Movie Clip outside to the stage... but this sounds like a near complete rewrite? Will this method even work? Is there a better way?
Having the following code:[code]Doesn't work if the line marked with (1) is there, however if I comment out this line, its able to load one single file, before it stops working.Using ActionScript 3.0 under CS5.[code]
I am creating a shopping cart feature within flash using as2 using this tut [URL]. I have created the as file and there are no errors but when it can to adding the first part of code to go into the actual flash file I get this error
The class or the interface 'com.ahfx. Product could not be loaded(source) var myProduct = new Product();
The code added on the first frame of the flash file import com.ahfx.Product; var myProduct = new Product(); myProduct.setQuantity(3); myProduct.setPrice(2.99); myProduct.setDesc("Teddy Bear"); trace(myProduct.getDesc()); trace(myProduct.getPrice()); trace(myProduct.getQuantity()); trace(myProduct.getTotal());
I'm trying to see if I can set up a text to speech feature in Flash. I found this post, which details how to integrate Google's text to speech functionality with Flash. Seems pretty good, but the post seems to be written for uber-genius AS3 programmers...well not really, but at least those who already know how to stitch these pieces together.
I know a bit about using classes and packages, but can't seem to figure out how all the chunks of code in his post would be stitched together.
Any chance anyone can check this out, and give me a basic rundown of how all these pieces would go together?? So I can try implementing this myself...
[URL]
PS. Also open to another solution to text to speech in Flash, if you know of an easier one..
In OpenCV, we can use a xml file to describe haar-like features of a specific object. I wanna use this idea to detect palm and fist, now I hava my own xml feature file, and it works well in C and Python(with OpenCV), now I need to move this idea to flash.
Luckily, I found an project named Marilena, it successfully moved the haar-trainning part of OpenCV to actionscript, and this article optimizing flash based face detection optimized Marilena, he turned the xml file into actionscript class itself to speedup the calculation. However, since the Haar data is being hardcoded into the class now it will not be able to use for tracking anything else but faces. I try to read the source code for detail, and process my own xml file into actionscript class file in his way, but finally find something different.
The xml file for face detection is like :
Every tree has only one node "root node", but in my xml file, some trees have two nodes, and the "left_val" above changes to "left_node" sometime, I don't know how to process these nodes. I think I should goto OpenCV C source files for detail to find how to correctly process xml feature file, but where to start,
I have a problem with functions, i'm creating a painting app in flash as3. i want to draw two different style a pen and rectangle.
When i draw pen style in first frame there is no problem, but when i click rectangle style in second frame it is drawing with both style. How can i stop or kill other function?
How do I make both of the not drawing. And How can i undo my last action in drawing?
I have developed an small application in flash 8. It is creating xml at runtime and add new nodes,delete particular nodes at run time. I want to use undo option in this application.
I converted a bitmap to vector. I am removing all the useless extra points which get created in that process. Occasionally I will mis-click and end up moving or deleting a shape. When that happens I want to use "undo". But ctrl-z and undo from the menu do not simply undo the last action. It also goes and adds useless extra points all over the place. Why? Is there a way to make it quit doing that? It looks to me like it is a very bad bug.
I haven't seen many Flash games on facebook or other applications really utilize it yet (or appear to utilize it).
Are there some good professional examples of its use?
Is pixel bender just too slow for practical use on today's web hardware? I read that Flash will fallback to interpreted mode on older Macs (PowerPC), for example, but is that a deal killer?
I created some Combobox and, when you select each item, a Movieclipappears with a different width,height and name.When it's in the scene you can Drag it to the position you wish.I made two button:Undo(), Redo()for the user who wish to make a previous action,in other words,put the Movieclip to its previous place.I try something with some Arrays that capture the different position when Drag is stopped.I place a Shared Object for registring all the previous position but I don't know how to make it work.So,I show you my code.function of the combobox:
Code: ComboBoxclassic.addEventListener(Event.CHANGE,select); function select(evt:Event)
i'm currently devolping a drawing board out of flash but i was wondering instead of erasing all the pen lines drawn just the last pen line drawn,im using kirupa drawing board tut for the all erase just stuck to gewt the last line erase done
I have heard about Flash Builder 4.5.1.As I have understood, one can make an application using Flex with the Flash Builder 4.5.1 and also exported the release build for iOS, Android and Blackberry.
What are the limitations of Flash Builder for developing the mobile applications? What are the things which can't do with this IDE? Is bluetooth, one of the thing?
Is it possible to develop Bluetooth feature for an application using Flash CS5?
I found this code on a forum which allows for an undo and erase button for a drawing application (and is perfect for what I need) but it's in AS2 and I can barely make sense of it:
Code: _root.attachMovie("canvas", "canvas", 0); d = 0;
