ActionScript 3.0 :: Convert Bitmap Into Sprite Pixel At A Time?
Nov 21, 2010
I'm making a game where the player moves around a map, where the player can walk and where they can't is decided by the color of the pixel they are trying to move onto, which I get using the Bitmap.getPixel method.
What I'd like to do though is when the map image is loaded process it into a sprite or something which I can then use the DisplayObject.hitTest methods on. So I have an array of colors whcih the user can walk on, is there way I could go through each pixel and build something that would let me do that?
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Nov 22, 2009
if it is possible to covert a bitmap to a Sprite? I tried casting it to a sprite, but that does not work. The reason why is because if figured out that you can't use the addChild option on a bitmap.
[Code]...
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May 5, 2009
Over the weekend i put together an MP3 player in Flex and just managed to figure out the SoundSpectrum.
It is working as expected.
I am facing problems when it comes to using a bitmap.
Right now, my "Analyser" class pulls the data from SoundMixer.computerSpectrum.
I then use that data with the drawing API to create a simple analyser. You know, just spikes.
Here is the code for that part:
Code:
private function update(e:TimerEvent): void
{
SoundMixer.computeSpectrum(ba, true);
var n:Number = 0;
[Code]....
Ok using common sense here, I am telling flash to take a snapshot of the Analyser and draw it to the bitmapData.
However, i cant seem to get this working. I am not using the dispose() method to clear the bitmap so id expect to see a mess of points (similar to if i removed the g.clear()) but nothing happens.
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Mar 30, 2010
I am looking for a fairly simple image comparison method in AS3. I have taken an image from a web cam (with no subject) passed it in to bitmap data, then a second image is taken (this time with a subject) to compare this data, from these two images I would like to create a mask from the pixels that match on both bitmaps. I have been scratching my head for a while, and I am not really making any progress. Could any one point me in the right direction for pixel comparison method, something like getPixel32()
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Nov 23, 2009
I have a 100x100px image. I want to get 1 pixel vertical line from x- 1 to 100. How can I do that?
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Feb 22, 2011
If I have a BitmapData that's already been drawn onto a Sprite. Is there a way to redraw the BitmapData onto a Sprites Graphics object without having to invoke beginBitmapFill and passing in the same BitmapData?
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Jan 30, 2011
I've googled out a lot of different stuff on this matter but nothing seems to work. I have a Sprite object which is used as a main container for other objects.The lowermost child of this sprite is a Bitmap which represents a background, the upper ones are MovieClips. These movie clips contain bitmaps. There are also DropShadow filters applied to these movie clipsThe problem is that when the main container moves, e.g. 1.3 pixels to to the right or to the left (doesn't matter) all those objects (movie clips contained inside of it) move like they snap to pixels. Well,it's obvious, they do. But is it possible to avoid pixel snapping for movie clips and sprites?I tried to set pixelSnapping of the bitmaps inside those MovieClips to "never", but it doesn't work. Removing all filters or drawing movie clip to bitmapdata doesn't help either.
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Mar 21, 2011
I try draw one pixel width rectangle in a sprite. And add some tween on it to make some effect. But I find use the code below can't create exactly one pixel white rect. I created I want to create
[Code]....
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Mar 11, 2011
Is it possible to iterate each pixel of a bitmap image? Eventually what I'm trying to achieve is that I need to get the coordinate values of each pixel of a bitmap image and change the color of those pixels according to their coordinate values. As I see it, I need to use the getPixels() method but I still did not understand exactly what I should do.
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May 31, 2010
Can I check if a pixel is transparent or not in a bitmap?
I want to count the nr of transparent pixels and nontransparent pixels.
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Oct 5, 2011
I have a bitmap with many colors on it. When the user clicks each color needs to trigger a different method. However, I have no idea how to check the color value of the selected bitmap. I can create a new sprite and check the value of that fine through bitmapdata.getpixel() but when I need to actually check the actual bitmap I cannot get it to work.
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Mar 31, 2007
I have been desperately searching for a way to do pixel perfect collisions, and for someone to explain it to me in detail. explain the code in the .fla file, posted by the Canadian in the frequently asked questions thread on bitmapData hit testing:
[Code]...
after looking through the help files, i must admit they are terribly vague. All you are doing is checking if _alpha is above a certain amount. With movieClips you would use 0->100 but with this hittest you have to use 0->255 (0x00->0xFF)so an _alpha of 50 would correspond to approx 128 (0x80). Nearly all the time you could just use 1 as a hittest parameter so you are checking for any hit at all but maybe you have a shadow in a mc layer and you do not want to check a hit. This is when you might be able to use your threshold parameter. In other words, the hit test will only react to parts of the bitmap which have a greater or equal alpha than the alpha threshold, mostly useful for a shadow.
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Dec 14, 2008
I'm implementing a frame class that builds a graphical frame around children using 9 bitmaps (4 corners and 5 middle pieces).The frame extends sprite, and the 9 frame bitmaps are attached as children. They are repositioned as necessary to encompass any other children on the sprite.
This works fine, normally, but as soon as I rotate or scale the frame, the children split apart, showing what appears to be a one pixel or partial pixel gap between the pieces.
I've tried setting pixelSnapping = PixelSnapping.NEVER on the 9 bitmaps. I've tried turning smoothing=true. The children bitmaps are always positioned at integer x, y's, never fractional. I've tried setting the scale of the children bitmap to 1.01 and PixelSnapping to AUTO. None of it works.
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Nov 20, 2010
Simple question here, lets say you have a color in RGB, white:255, 255, 255Pixel bender needs values between 0-1 not 0-255.So white = 1, 1, 1What about:134, 132, 123I dont know how to work it out.
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Jun 16, 2010
Using Actionscript 3 is there a way to search one bitmap for the coordinates matching pixels of another bitmap?
[URL]
Somehow you would have to loop through the bigger bitmap to find and the the pixel range that matches and return those coordinates. For example the Bitmap with the "E" is 250 pixels over and 14 pixels down in the bigger bitmap.
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Mar 24, 2011
i've filled a circle shape with the bitmap data of a bitmap asset.i need to rotate the circle from the center, so i added the bitmap to the center of the circle and used a matrix transformation to shift the bitmapdata upward and leftward so it appears centered.
now i'm trying to read the bitmap data with getPixel() but the return value is off since it is returning the untransformed position of the bitmap data instead of the visible transformed bitmapdata.
Bitmap(Sprite(evt.currentTarget).getChildAt(0)).bitmapData.getPixel(evt.localX, evt.localY)
how can i get an accurate reading of the pixel data from a bitmap with a matrix transformation? updated with code. assume the redCircleData in my example is more colorful and something worth retrieving pixel data.
var redCircleData:Sprite = new Sprite();
redCircleData.graphics.beginFill(0xFF0000, 1.0);
redCircleData.graphics.drawCircle(0, 0, 100);[code]............
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Oct 12, 2011
I load a bitmap to the stage, it's a GIF and set to lossless compression. I have ensured its coordinates are integers and have not allowed smoothing (smoothing somewhat fixes the issue but reduces quality of the image).The problem is the image appears to shift one pixel to the left and add that pixel on to the right side meaning one side has no border and the other a double border.The original bitmap does not have this issue, and there is no transparency .etc in the image.
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Jan 14, 2002
I can obtain the number of characters in a string using the 'length' action script command. However, I need to know the pixel width of this 'length'?
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Aug 10, 2011
I need to convert latitude longitude values into pixel positions as well as do the opposite. I've found many solutions to go from lat/lng->pixel, but can't find anything on the reverse.
A couple of notes:
The map is a fixed size, no zooming, no tiles. I don't need anything super accurate, its not important. Preferably mercator projection, but not required. I'm not actually display the result. (Any 2D projection) I can't rely on any web based API's, ie: no Google Maps
A solution in almost any programming language would be fine, as long as it doesn't rely on any platform specific APIs.
This is an example of going from lat/lng->pixel:
var y = Math.round(((-1 * lat) + 90) * (this.MAP_HEIGHT / 180));
var x = Math.round((lng + 180) * (this.MAP_WIDTH / 360));
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Feb 4, 2010
how to addChild bitmap in Sprite. I have one bitmap image in my libary. Now, I want to add it into my "Sprite" display object. I can put my libary's bitmap into movieClip but I want to do in pure as3 .
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Apr 14, 2011
I'm kinda new to AS3, I would like to know the difference between Sprite and Bitmap classes??
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Aug 11, 2008
I've got a Sprite object that I would like to extract somehow into a Bitmap object in order to manipulate certain pixels. For example, if i have a diamond shaped Sprite, I would like to convert it into a bitmap
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May 31, 2011
/*the point of this is to add a keyboardEvent to animate the image*/I am loading a bitmap image using this function:
var myLoader : Loader = new Loader();
var myURLRequest : URLRequest = new URLRequest("thesus.png");myLoader.load(myURLRequest);
function myOnComplete(event : Event) : Bitmap{ var loader : Loader =
[code].....
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Jun 12, 2010
Following up from: http:[url]...I am trying to comeup with a function to print without creating a sprite, because that's what it seems to be causing my problem:
public function printScreen():void {
var pJob:PrintJob = new PrintJob();
var options:PrintJobOptions = new PrintJobOptions();[code]....
This is coming up with an: Error: Description Implicit coercion of a value of type flash.display:Bitmap to an unrelated type flash.display:Sprite. So how do you print a bitmap without creating a Sprite?
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Jun 27, 2011
Maybe it is a bad habbit which still i have from Flash Professional, but : I am trying to add a simple Sprite or/and Bitmap on just created, empty application, and it just not hapening.
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[Code].....
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Feb 7, 2009
I have a PNG that is a child of sprite object. The PNG consists of a shape in the middle of a transparent background (the alpha value is zero). I want to change the color of the sprite, but I do not want to change the transparent background.
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Mar 2, 2011
What I want to do is draw the outline of an object using the IDE to create my movieclip symbol...this object will be an enclosed region e.g a cloud. I then want to be able to fill the internal area of the object with a bitmap using actionscript.
I had assumed that I would be able to do this via graphics.beginBitmapFill but there doesn't seem to be a way to specify to draw the outline within the MC or to do a floodfill with a bitmap using a point of origin within an enclosed region.
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Dec 13, 2011
I load a picture file by Loader and add Bitmap into sprite,like follows:sprite1.addChild(myBitmap);Now I want to get the myBitmap from sprite1,how can I get myBitmap from sprite1,what code can I use?
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Nov 10, 2009
I've just switched over to AS3, and I'm completely stumped with something.
I'm working on a project where I keep adding children to a MC already on the screen. There are two types of these children: Sprites that I use to draw lines using moveTo, lineTo, ect. Then there's sprites that have children inside of THEM that are bitmaps.
For some strange reason, the Sprites with the bitmaps on them always have a higher depth/index (AS3 terminology is still weird for me) than the normal Sprites.
Here's a diagram of my MC/children/children layers:
---------------=> (Sprites that draw lines)
(MC on Stage) =>
---------------=> (Sprites that hold bitmaps) => (Bitmap)
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Feb 7, 2005
I am using Flash MX 2004 and would like to display the system date/time. The problem I am encountering is when trying to use a pixel font to display it with. Is this possible??? Or can you use only standard (safe) font's i.e. Arial, sans-serif etc.
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