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 Replies
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.
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()
View 2 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 need a function that retrieves the average hexadecimal color values of a group of pixels in a square. Like a 4x4 area, and I want to be able to calculate what the average color is by retrieving the color of each pixel.
View 4 RepliesI'm currently making a color picker (pretty standard one, pretty much the same as photoshop with less options at the moment: still in early stage). Here's the picture of the actual thing : [URL] The problem is : to retrieve the color of the pixel that is under the color selector (the small one, the other is the mouse), I have this line that I thought would do it :
_currentColor = Convert.hsbToHex(new HSB(0,
((_colorSelector.x + _colorSelector.width/2)*100)/_largeur,
((_colorSelector.y + _colorSelector.height/2)*100)/_hauteur
));
Just to clarify the code, I simply use the coordinates of the selector in order to create a new HSB Color (saturation is represented on the X axis and brightness (value) on the Y axis of such a color picker). I then convert this HSB Color to Hexadecimal and assign it to a property. The hue is always set to 0 at the moment but this is irrelevant as I only work with pure red to test. It partially does what I wanted, but the returned color values are inversed for most of the corners:
[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 RepliesI 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]........
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 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.
If anyone has come across this problem or is educated enough so that you may come up with a working solution then please post here. Okay so at the moment I have 2 swfs. One swf is the main swf, which contains a class called Avatar. This class extends Sprite and has 1 child, which is a bitmap image.
What I do is load the child swf into the main swf, create an object of the Avatar class and pass the Avatar object down to the child swf. The child swf takes this object and adds it to a Sprite object as one of it's children. Then I add an event listener for MouseEvent.CLICK to the Sprite object (the one containing the Avatar sprite) that is in the child swf.
Now when I go to click the Avatar bitmap inside the Sprite inside the child swf. The mouse click event does not fire.
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.
So I'm Bitmaping some heavy stuff to try bring down the [pre-render] and [render] which is quite high according to FlashBuilder's profiling. I thought this was going well until I realised that as soon as you change a MovieClip to a Bitmap, you lose the pixel based accuracy of the mouse move events (Over, Out, Move...), all your left with is the entire bounding box of the Bitmap, something which is less than desirable. I've got a game where many Bitmapped assets would be on top of each other in a scene, on the stage, arranged in various ways and need to have that pixel accuracy moving between each one and have exhausted my efforts as to how to achieve the same mouse move results with the Bitmapped guys as normal.
This, [URL], is a FLA which shows this operation, and you can see how it works here, [URL]. When it loads up, both items on stage are drawn Shapes, encapsulated in MovieClips, both that get a glow, if you hover over them. If you click the stage at all, the purple guy gets turned into a Bitmap and now, his 'hit area', when it comes to MouseEvents is his whole bounding box and you can only get through to the back green item at the edge slivers.
I'm also tracing the pixel which the mouse is over, so I can clearly tell when the mouse is over a transparent area, it's 0, but how can I tell the event to forward itself on down the chain to the green MovieClip?
Below is how it's now pretty much working for me,
var bitmap:Bitmap = this['bitmap'];
var shouldMouseOver:Boolean = bitmap.bitmapData.getPixel(event.localX - bitmap.x, event.localY - bitmap.y);
if(shouldMouseOver)
[Code].....
I shut off mouseEnabled for my item, when I know it's wrong, then I search for another item that properly fits the bill and if there is one, send an Event to that and break. If that one's also wrong, it'll do the same again, but each time taking themselves out of the loop.
This does work exactly how I want it to, but I'd always prefer to keep things like globalToLocal and looping, and reading from arrays for not frequently updated methods like listeners to MOUSE_MOVE. Is there a more efficient way to do this?
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'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]............
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 RepliesGrab the color of a vector item at a specific pixel without converting it to a bitmap object and then using getPixel?
View 8 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 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).
Is there a way to get the color of a pixel that the mouse clicks on. I want to load text into a dynamic text box according to that color.
View 12 Repliesfor example,graphics is an object from a movieclip ojbect.I want to get the pixel color at the x,y location in the movieclip.How to do?
View 5 RepliesI have a spinning sphere, built using the away3D engine, it is wrapped in a bitmap. I need to be able to check the color value of the pixels in the sphere, however BitmapData only plots the 2D image, not the 3D sphere. So, the values become wrong. If I try to apply it to the sphere I get nasty errors. I have literally been stuck on this for days.
View 1 Repliesis it possible to pick the color of a uni filled shape? If not, is it possible to retrieve the color at pixel x:0 y:0?Otherwise how do I pick that pixelcolor using bitmapdata.
View 2 RepliesI'm quite new to ActionScript and I was wondering is there a way to get the (pixel) color of the HTML layer under a flash movie? I have an idea of making a transparent flash movie covering a part of a website and then getting the color of underlying HTML layer, to make some realtime transformations or other stuff.
View 2 RepliesWhat is the best way to turn turn off (using PixelBender) colors that fall within a certain range. For example, turn off all colors between 0x0000FF and 0x00FFFF. This has to work in Flash.
View 2 RepliesI'm having trouble with this code
var imageMap:ImageSnapshot= ImageSnapshot.captureImage(object);
var pixelValue:uint = imageMap.bitmapData.getPixel(x, y);
Can I detect the color of a pixel or an area in a Display Object?
View 2 RepliesI want the user to be able to click a picture and the background of the swf will change to the color of the pixel where the user clicked.
View 2 RepliesI am working on a project that involves custom vinyl lettering. I have the a swf that loads images to an image scroller which can then be drug onto a stage and scaled or rotated. What I need to know is if and how I can change their color using the color picker component.
View 23 RepliesApparently, in order to make a bitmap transparent, one has to convert it to 256 colors from 24. I'm not sure if Flash puts it in 24 or 256, but because I can't create a transparency when using Bitmap() in my code, and from what I see displayed on the screen, it would appear that it uses 24 colors. Perhaps this is to keep things light. Nonetheless, is it possible to convert it to 256 colors?
View 1 Replies
