ActionScript 3.0 :: PNG To ByteArray To Multiple BitmapData Objects?
Sep 17, 2010
is there anything that will take a very large png (even larger then the total pixel limit of BitmapData) and load in the png as raw bytes into a bytearray and then take that array and grab only portions of the image to be able to generate a grid of usable bitmaps to render the very large png..I got to the point where I was able to get the png as a bytearray but from there I don't know how to grab a portion of the bytearray and attempt to load the partial bytes in a loader via loadBytes()..basically I think I need a decoder to decode the partial bytes to a bitmapdata.
I am creating a program that is effectively an sprite creator. I'm very new to AS3, but I know JQuery, JS, PHP, etc. After going through multiple steps of selecting pieces to customize a character, you are supposed to be able to download the final product using fileReference(). Everything works, and I can download the image in the end, but the problem is that I cannot capture all of several movieclips on the stage, I can only capture one. Maybe this will help clarify:
[Code]...
Could it be that each of the movieclips I'm adding to the sprite have children of their own?
I am trying to serialize a Bitmap to store in an XML file. My plan is to turn the BitmapData into a byteArray, but I haven't been able to fine an example of this.
i want to do some cryptographic routines in my flash. I've encrypted .jpg files on my server, so I can't use simple Loader class, to download that data as Bitmap. I'm thinking to:
1) download it with URLLoader as BINARY data in ByteArray class.
2) decrypt the data
3) convert to BitmapData. (..., is this possible ?
I need a function to change an ByteArray to BitmapData in 1 function:
makeBitmapData(bytes:ByteArray):BitmapData
Is this possible? Cause all I can find about this is first put the bytes in a loader. add listener to the complete event and then call a function that make the bitmap/bitmapdata. can this also be done in 1 function?
I'm trying to grab the BitMapData from an Image, convert it to JPG, and send it to a server where it will be written to a file. It "looks" like it works, the resulting .jpg is the right size and displays in an image viewer, but there is no picture... just an off-white background. Here's a code snippet:
imgTemp.addEventListener(FlexEvent.UPDATE_COMPLETE , imageLoadedHandler); ... private function imageLoadedHandler(event:Event):void { if (imgTemp.width == 0) return;
[Code].....
Then send "ba" to the server where it's written as a .jpg.
The data "looks" right when I receive it on the server, correct length, bits look the same.
In the 4th line in the code above i am getting "Error: Error #2030: End of file was encountered." I checked the length of the pixels object which is 4 times the width*height of the rect object. Given that setPixels() functions reads unsigned int from bytearray and sets that value to pixels, I think it should work.
But I have no clue why this wont work. The pixels object is filled after RLE decoding of the data which i get from a server.
Is there any work around or any other method which I could try to use. The loader class wont work as the data that I get from the server is not in any of the recognized format.
i am rendering a BitmapData from my webcam and sending the rendered ByteArray(i cant compress using ZLIB because its not running on AIR) file as binary to a server side. problem is each JPEG picture is around 40kb and it needs to be compressed a bit.now i am not talking about resizing the image, just making the file size smaller. anyone know how to do this?
I am trying to make a little "database" app. I have several obejcts that need to be saved and loaded (saved data files). These objects are custom MovieClip classes.I will say that I don't know much about ByteArray. What I have attempted was to put all my objects into and array, then use ByteArray.writeObject() and ByteArray.readObject() with that array.I assume that the file saves ok, but when I try and load back the file, I get a 1034: Type Coercion failed error. See the code snips below.
Code: public function ToSave(e:Event):void{ aFile = new FileReference(); //compiled data in the order: league,allTeams,allPlayers,allGames
I'm making an Air app that involves users being able to load in a bunch of pics (of their choice), label them and move them around to place them in some sort of order. No problems there.
Crucially, I need them to be able to save the results for later use as it's an educational resource for teachers who might wish to prepare the resource at home or in their office for use in the classroom. Consequently, portability is crucial and I would like to simplify the process as much as possible.
As it stands, I could easily save all the necessary data as jpg's (maybe even one big jpg for the images) and the data as xml. However, having to move various files is guaranteed to confuse a lot of my users and so I'd like to create one file, with a bespoke file extension that they can move easily and then just double click to open the app, much as you would a Word document, for example.
Which leads me to the 'how'. I bit of research seems to indicate (although I may be wide of the mark here) that the ByteArray class may be of use here. Does this seem reasonable? All I want is to store everything in one file, basically.
Are BitmapData objects automatically GPU accelerated for rendering, rotating, and scaling,or does the bitmap they connect to need to have cacheAsBitmap set to true?
How to dispose bitmapdata objects that have no linkage. The thing is that I have bitmap pictures (PNG) wrapped inside movieclips (as you can't set linkage to PNG files with jsfl) and when I begin to load them into my movie from the library I can't dispose of them to free up ram memory, i've tried to use movieclip.removeMovieClip(); and movieclip.dispose(); but the bitmap inside still takes up ram! I use over 1000 pictures so i really need to dispose them... How to get linkage set to PNG files with jsfl??
I'm trying to know if you can copy the pixels of many objects in one BitmapData without a huge slowdown. The slow down is made by calling the method multiple times, thus making a lot of variable declaration and disposal for the garbage collector. If someone know how to either immitate the copyPixel method or have any other way of solving this problem,
I have two BitmapData objects with alpha channels. I'd like to combine them into a single one by using max(channel_image_one, channel_image_two) for each channel, including the alpha. Is there an easy way to achieve this result?
one drawing layer (graphics object with lineTo, etc.)
one png with an alpha channel (supposed to serve only as a mask)
now i want to be able to only draw lines within an area restricted by the png mask.
i am trying like this:
var bitmapData:BitmapData = new BitmapData( 320, 320 ); bitmapData.draw( drawingLayer ); bitmapData.copyChannel( maskBitmapData, new Rectangle( 0, 0, 320, 320 ), new Point( 0, 0 ), BitmapDataChannel.ALPHA, BitmapDataChannel.ALPHA );
now the borders get cut off fine, but i get a black background, since the drawing layer has an alpha between the drawn lines (and it should remain like this) and the mask bitmap has an alpha outside the shape. so naturally the mask's alpha replaces the drawing layer's.
i tried it with merge, copyPixels and also with just setting the mask property on the drawing layer (i set everything to cacheAsBitmap) but to no avail.
[Embed("...")] private const BodyMask:Class; var maskBitmap:Bitmap = new BodyMask();
and assigned them to the mask property of a s:Group element (cacheAsBitmap=true) where the operations on the graphics object occured. i also tried reassigning the mask after each draw operation.
The code below is a simple add and save program. You press the addButton to add content to the canvas and than press the exportButton to save an image of the canvas in its current state to your desktop. This code works fine when I add circle objects to the canvas that are drawn to the canvas. The problem lies when I try to load a .png into the canvas. Once the loaded content is added to the canvas the exportButton stops working all together and no longer responds. What is causing the loaded content to break the code?
I am drawing a flash sprite on a BitmapData using its draw() method. This sprite has some nested objects with 0 alpha, yet the draw() method draws them on the bitmap data.
I think it has to do with the color transform I am using, but I have no idea how to change it to achieve the effect I want.
The color transform is the following:
Code: new ColorTransform(1, 1, 1, 1, 255, 255, 255, 255);
I am using these values in order for the Bitmap to have white pixels wherever the object was, and black where there is nothing. The draw() also draws my alpha = 0 objects in white as well.
Photoshop and Fireworks both have some nice filters. When you put one bitmap over the other, the first bitmap can act as filter. For example, the white pixels of the top bitmap lighten the pixels of the bottom bitmap. Is there any way to apply this in as3? What I am trying to accomplish: I have a large single-color bitmapdata object. I want to overlay perlin noise and lighten/darken the single-color bitmap to give it some random/natural look.
I am working on a game, made with Flash (using AS3) The game has a fast ball and when this ball hits an object it has to make a sound... but the sound starts with delay (so the ball is far away when the sound is played).This sound is edited by me and it hasn't got any silences at the beginning.The method i'm currently using is the simplest one:
public var sonidoPuntos1:sonidopunto1 = new sonidopunto1()
and then...
sonidoPuntos1.play()
I am trying to introduce the file into a ByteArray and then playing it from there...
I want to be able to drag any of the 4 objects onto any of the targets, right now all I can manage is to allow each object drop onto one specific target only.
I thought by calling all my target names by the same instance name eg target_mc that would work but only one target will ever work.
I have a question about optimum resource management. So I am pondering what would be the most efficient way of storing a LARGE number of BitmapData instances in a SWF. The BitmapDatas would be generated at runtime. Only a minority of the BitmapData instances would be on screen at any one time. So far I've conceived three routes; Option one (simply store them in an array - this is then stored in the RAM right?)
ActionScript Code: var array:Array = new Array(); var bitmapData1:BitmapData = new Bitmapdata(); var bitmapData2:BitmapData = new Bitmapdata(); array.push(bitmapData1); array.push(bitmapData2); [Code]...
I currently have an over, out and click event for 8 different objects. The over and out events are identical for each (tween expands object and then shrinks it back for the out state).I have previously asked for an easy way to declare those events, and now I was looking for an easier way to handle them.
Here's my code:
//-----------GARAGE function growGarage(e:MouseEvent):void{ scaleTweenX = new Tween(map_garage, "scaleX", Elastic.easeOut, 0.648, 1, 0.5, true);
[code]....
I've tried using a single function and then using "this" as the object of the tween but that expanded the entire stage.
I have an image loaded from BitmapData displayed in an Image control. This Image control has dragEnabled and user can drag and drop small images (from a bunch of images in a TileList) on top of it.
The image loaded from the Bitmapdata can be different every time with different resolution and the Image control scales it down to fit its fixed with/height. But while saving the image after editing I am saving it with its original width/height. For this purpose I am storing the original Bitmapdata in a temp object and applying any edits there before saving.
how to create an image combining the Large image and the small images dropped into it. May be I can use display object snapshot but then I want to save the image with its original with/height and preferably after converting it to Bitmapdata.
hi guys, i got this image i scaled down by .5. The user is then allowed to add objects to the image such as flowers that are sprites in the library. So basically, a jpeg that is 800 x 800 is down to 400 x 400 on the stage and the user is able to add objects to overlay the image.
i want to save the image with the flowers and objects back to its 800 x 800, how do i redraw this image using bitmapdata properly?
When I publish the file, I'm getting the following error message in the Output panel:
**Error** Scene=Scene 1, layer=Layer 2, frame=1:Line 7: The class or interface 'BitmapData.loadBitmap' could not be loaded. var plaid:BitmapData.loadBitmap("plaid");
