ActionScript 3.0 :: Get Pixel-by-pixel Bitmap Data?
Nov 23, 2009I have a 100x100px image. I want to get 1 pixel vertical line from x- 1 to 100. How can I do that?
View 7 RepliesI have a 100x100px image. I want to get 1 pixel vertical line from x- 1 to 100. How can I do that?
View 7 RepliesI 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()
View 2 Repliesi'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]............
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.
View 3 RepliesCan I check if a pixel is transparent or not in a bitmap?
I want to count the nr of transparent pixels and nontransparent pixels.
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?
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.
View 2 RepliesI 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.
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.
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.
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.
View 1 RepliesI wondering if with flash would be able to load in an external jpg file and then export the pixel data into a php application to rebuild the image?My concern is when an application loads an external resource it is just that, external and not local and therefore when I come to grab the pixel data will it grab the external resource in this case the image I've placed inside a movie clip?
View 3 RepliesI'm using FFmpeg to do some video analysis on my PC but I'd like to see if I can do something similar in the browser using Flash.
Does Flash offer any way to take a video file as input, crack it open, and get access to the pixel data?
I want to take the colour of a certain pixel in a movieclip and make the colour of another movieclip that colour. How do I do that?
View 1 RepliesI have a label and I need the pixel value of the end of the text of the label. I will later later need to set a icon in fronto f the end of the text. I tried label id.x and y but it seems not working. Also for some reason when I do something like <label id>.x+5 it gives me a implicit coercion error...not sure why?
View 2 RepliesI was wondering what the code to get something to go to a whole pixel value is. I'm using pixel fonts inside of a movieclip and when the movie clip is moved through actionscript and lands in a different spot with easing, the fonts look bad because i suspect that they are no longer on pixel values.
View 9 RepliesI made a menu by attaching movieclips and specifying the text as a variabel. the main movieclip is called meny, then I attach the movieclips txt and pil (pil is norwegian for arrow) inside it, and specify the y pos. This works on my mac, but when I see it on a PC the text is down by aprox. 5-8 pixels.
[Code]....
How do I programatically get the pixel dimensions of my SWF. I tried using stage.width and stage.height, but this seems to be a tight bounding box on all the objects in the video, not the actual viewing area. I also want these pixel dimensions to be accurate as javascript dynamically resizes this SWF.
View 2 RepliesI have a Flash CS3 movie (AS2) wich uses pixel fonts. The text is within a movie clip that uses the tween class to move with ease. Whe I publish it, everything OK, the text looks very crispy. But I want this movie to be centered in the browser window so I've used the tags <center> </center> in the html file as you can see below. When you play the movie it plays in the center but... with IE8 the text is blurred if the browser window is maximize, but crispy if you minimize the window!! With other browsers it works well with all windows sizes, IE7, Firefox, Safari...
Here is an exemple: [URL]
Code:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="es" lang="es">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>test2</title>
[Code].....
I am trying to get the alpha values in the rect of one (playball_mc) clip inside another bigger clip (dst_mc). The clip dst_mc has a bitmap attatched and also has a shaderFilter that calculates the alpha values.ut I only get alpha values of 0xFF.Does anyone know what I am doing wrong or where the alpha value gets lost?
CODE:var rSource:Rectangle=new Rectangle(playball_mc.x,playball_mc.y,80,80)
dst_bmp.draw(dst_mc);bmd1.copyPixels( dst_bmp , rSource, new Point(0,0) );
for
[code]........
Grab the color of a vector item at a specific pixel without converting it to a bitmap object and then using getPixel?
View 8 Repliesadd a 1 pixel border around the entire stage so it appears in swf?
View 3 RepliesIs there a way to retrieve the color of a generic pixel on the screen using the mouse pointer inside the Stage of Flash Player? With the getPixel method of the BitmapData class you can get the color of a pixel only if the mouse is over a bitmap image, but what if I need the color a generic pixel on the screen?
View 4 RepliesWhat is the SIMPLEST way to make a pixel perfect hit test class?
View 41 RepliesI have a large pixel file yet it gets cut off when I preview it. Why?
View 1 RepliesSay I have drawn a triangle with[code]...
When the user clicks a point inside the triangle, we will get the x and y coordinates, do some calculation with those values and get some (lots) of pixel coordiantes accordingly (all of those calculated points will be within the triangle). And finally, change the color of those points (something different than triangleShape fill color).
I have a website with a Flash banner. This has worked fine in all major browsers (IE7/8,Firefox, Chrome, Safari, Opera) for some time, but when I upgraded to IE9, the banner is displayed with a 1 pixel shim on the right-hand edge, which is throwing the layout off.know past versions of IE would display line breaks as white space and I wonder if that's what's going on here. I'm using the AC_FL_RunContent() function to display the Flash file.I'm not sure where to look to debug this, but I'd like to fix it sooner rather than later
View 3 RepliesI am trying to set a constant hue value for entire image with using ColorMatrix. My goal is to make entire image look with same color without loosing brightness of any area. I found a way to shift the hue values of an image by using ColorMatrix but i couldn't find any way to set same hue value for all pixels. I can do it with iterating every pixel of image but this approach is too slow. I am not sure if it is possible to do it with ColorMatrix and i am open to possible solutions other than ColorMatrix approach.I can do this with iterating pixels but not with ColorMatrix.I am trying to do this on Android but i believe the question is not directly related to the android since ColorMatrix approach is common on other platforms like Flash, C# etc.
View 5 RepliesWorking on a Flash iOS app and I need to utilize a couple Apple APIs. I was thinking, would it be possible to write Pixel Bender classes to access their API? If so, could someone provide a small example to get started? Or is there a different / better approach for this?
View 1 RepliesI write a Pixel Bender kernal for my flash.I know that the pbk would run in another thread.But when I run my swf, the GPU usage shows 0%.I want to know does the Pixel Bender with Flash would use the GPU.
View 2 Replies