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.
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Jan 30, 2012
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[Code]...
Could it be that each of the movieclips I'm adding to the sprite have children of their own?
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Jul 28, 2010
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Jul 5, 2007
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:
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Jan 9, 2010
I need a function to change an ByteArray to BitmapData in 1 function:
makeBitmapData(bytes:ByteArray):BitmapData
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Dec 19, 2010
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 {
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[Code].....
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Mar 18, 2010
I am using [code]...
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.
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Sep 12, 2009
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?
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Feb 3, 2011
Error #2030: End of file was encountered.
This method is not working
I am using it like this
var ba:ByteArray = new ByteArray();
ba = bmd.getPixels(bmd.rect);
bmd.setPixels(srcRect, ba);
bm.bitmapData = bmd;
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May 27, 2010
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Code:
public function ToSave(e:Event):void{
aFile = new FileReference();
//compiled data in the order: league,allTeams,allPlayers,allGames
[code]....
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May 27, 2011
I'm thinking about distributing bytes of a SWF into multiple files, how can i put a set of bytes in different parts into one byte array?
[Code]...
Also would reading partial bytes into a byte array work?
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Jun 7, 2010
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.
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Sep 7, 2011
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?
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Apr 10, 2006
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Feb 7, 2010
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,
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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?
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Aug 22, 2011
i have the following situation:
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.
ADDITION:
when trying to use a mask i tried it with
<s:BitmapImage id="mask" source="@Embed(source='...')" cacheAsBitmap="true" />
and also as
[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.
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Mar 27, 2012
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?
[Code]...
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Mar 17, 2011
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);
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im creating a small drag and drop game in AS3-
I have 4 objects and 4 targets,
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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]...
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Sep 20, 2010
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.
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May 29, 2011
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.
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Sep 3, 2011
I need to add "_myThumb" to 4 container MovieClips. The problem is that it's only working for 1 MovieClip. What do I need to change?
var _myThumb:Bitmap;
var _myThumbData:BitmapData;
function createThumbs()
[code]......
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Oct 11, 2009
What's the best way to say:
if(this.object in same array as that.object)
with multiple arrays containing multiple objects?
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Mar 28, 2011
I know its a true Pain but does anyone know any way to convert wav ByteArray to mp3 ByteArray.
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Apr 26, 2009
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?
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Jan 31, 2007
I'm using Flash 8, with this code in the first frame:
import flash.display.BitmapData;
rissa._x=Stage.width/2;
rissa._y=Stage.height/2;[code].....
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");
Total ActionScript Errors: 1 Reported Errors: 1
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