The documentation says that clipRect parameter of the BitmapData.draw method sets clipping for the source.Reading this I wrote an AnimatedObject class for my potential flash game. This class draws a frame from a .png animation strip, and doesn't work with Flash scene hierarchy.
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I have a component that contains 4 layers: (in ascending depth order) bgImage:Sprite, dropZone:Sprite, dropMask:Sprite and line:Sprite. The bgImage is at 0,0, and the other objects are placed at various positive coordinates. dropMask is masking dropZone.At the point of bitmap capture I want to only draw from the dropZone and dropMask layers, so I'm trying this:
removeChild(bgImage);
removeChild(line);
var bmd:BitmapData = new BitmapData(dropMask.width,dropMask.height,true,0);
bmd.draw(this,null,null,null,dropMask.getBounds(this));
Despite the dropMask being located at 50,60 the capture always starts from 0,0. I've also tried getting the boundary rectangle and forcing the x,y, but it makes no difference. should I just forget clipRect and use a matrix instead?
I am using the draw() method of the BitmapData to encode a jpeg of part of the image. Now this should be easy enough given the object I want to draw to the bitmap is on the stage at design time so I know its location and dimetions exactly! Heres the code I have in place.
Code:
var myBitmapSource:BitmapData = new BitmapData ( street.width, street.height, false, 0x333333);
myBitmapSource.draw(street, null, null, null, new Rectangle( 96, 5, 571, 450 ), true );
I know for a FACT that no part of the street clip I am drawing out is in negative space, and it's registration is (0,0). However, it cuts off A lot of the top of my image. y=5 in the above rectangle is where I need the top to be, but it cuts the top off of the image... even if I change it to 0, it has no effect.
I have problem when drawing transparent png image on transparent bitmapData.
code of first frame:
stop();import flash.display.Bitmap;import flash.display.BitmapData;import flash.display.BlendMode;import flash.geom.ColorTransform;import flash.geom.Matrix;
var bmd: BitmapData = new BitmapData(500, 400, true, 0);var bitmap: Bitmap = new flash.display.Bitmap(bmd);addChildAt(bitmap, 1);
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I've tried working this problem out several times, but I've never been able to get it to work. What I want to do is draw a PART of a bitmapdata onto another bitmapdata while using transparency effects. My code looks something like this:
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The problem SEEMS lies in the new Rectangle. Whenever I try using it, nothing gets drawn onto bmdScreen. So, what's the deal? How would I draw a 32X32 rectangle of bmdSource while using the draw method? Is this even possible? (By the way, the only way I found a workaround to this is to create a separate bmdSource that is the rectangle itself. It's kind of a clunky system and it'd be nice to do away with it.)
I am having an issue with using BitmapData.draw(stage). I am getting the following error:
SecurityError: Error #2123: Security sandbox violation: BitmapData.draw: file:///C|/Documents%20and%20Settings/bla...bla...bla.swf cannot access null. No policy files granted access. Here is a portion of my code:
var bd:BitmapData = new BitmapData(2800, 2100); bd.draw(stage);//this is where the error happens All of the files referenced (.xml/.jpg/.swf) are located in the same local folder as the main .swf. How do I get around this error? The main objective is to print the stage using PrintJob(). I am using Flash Professional CS5.5 and publishing to Flash 10.0/10.1. Let me know if I need to supply any more info.
I'm making a copy of a Sprite via the BitmapData Draw method. It kind of works other than the top portion of the bitmap gets cut off (replaced with transparent pixels). It looks like it's about the same height as the Sprite's y value.
looks like this:
_________________________
| |
| TRANSPARENT PIXELS |
|_________________________|
| |
| IMAGE |
| |
| |
| |
| |
| |
| |
|_________________________|
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.
Using DRAW I want just a part of the original image. I am using the "Rectangle" bit of the paramaters, but I can't get the start of the crop away from the top left corner.
Here's my code :
ActionScript Code:
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.text.TextField;
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I'm currently working on a flash game and I need to know how to addChild a BitmapData or draw a BitmapData to screen. If I can't than how can I give a DisplayObject my BitmapData?
View 2 RepliesI wrote a collision detection class that works off using BitmapData.hitTest. Basically, every update, the .draw method is called and then two BitmapData's are hitTest'ed against each other to see if there is a collision.It works pretty well, however if I start rotating the source MovieClip I use for the BitmapData, the transformations don't get registered in the draw method. So what I did was pass through a Matrix in the draw method. That works. But here's the actual issue. If I output the BitmapData to a Bitmap on the stage, I see that Bitmap is, in fact, rotating, but now it's exceeding the bounds (width and height) of the BitmapData. Which is cropping / clipping the image of the source MovieClip.
UPDATE: Basically, when the Bitmap clone of the MovieClip rotates outside the positive co-ordinate space, it doesn't get drawn. It rotates outside the bounds of the BitmapData set width and height. I can multiply the bounds by 2, and then center the bitmap inside the set bounds, but then the origin point is never fixed and the object is always being moved around. Works pretty well, but makes aligning the object to any specific point impossible.Here's my isolated test code. It requires you to have a MovieClip on the stage named "iTest". I used a fairly vertical arrow shape (higher than it is wide) so I could keep track of rotations visually accentuate the clipping problem:
var rotateTimer:Timer = new Timer(10);
function rotateObject_init():void
{
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i have a class thats create a class with bitmapData that merge 2 IBitmapDrawable. one of them is 24*20 while the other is 16*16.i want to draw the smaller first in a bitmapData object which its width and height are 24*20 but i want to draw it in the center of the big bounds.
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Instead of populating the BitmapData class from an IMAGE.I would like to (within Actionscript) GENERATE some new BitmapData by capturing the Bitmap representing say, a TextArea component on the stage.In other words, sort of take a "screen capture" or "screenshot" of one of the components, and convert that into an image. Am I silly to even wonder if such a thing is feasible? Can an Air/Flex app "look at itself" in this way? Can it turn a datagrid or a canvas or a textinput into the corresponding image AS IF via screen capture?
View 1 Repliesthe problem may be a simple one but I can't figure it out. I have an image loaded into BitmapData. now I want to take text from a textinput and put it on the BitmapData. Basically it's drawing a text on the BitmapData and get the result as another BitmapData that will consist of the original BitmapData with the text drawn over it on a specified position
View 2 RepliesI'm building a flickr application in flex at the moment but i keep getting sandbox errors when i invoke BitmapData.draw();.After doing some google research i found that the proper policyfile needs to be loaded.i do this using: Code:Now this still doesn't resolve the issues. Upon further research i found that i need to check the policy file first using checkPolicyFile = true;
View 2 RepliesI've been using BitmapData.copyPixels() to draw graphics onto a canvas (Bitmap).I need to rotate the resulting graphics without the use of draw() because it's vastly slower.How can I rotate the target graphic? I'm assuming that there might be a formula or library that I can use which will first reorganize the pixels that make up a graphic based on an origin (point) and radians.I'm pretty certain that I'm not capable of creating such logic, so if there are any known libraries that do this, that would be awesome.I'd like to achieve something similar to XNA's SpriteBatch.Draw() method, which accepts rotation as its 5th argument.
View 3 RepliesI have run into strange behavior drawing a sprite into a BitmapData. This sprite looks fine when drawn directly to the screen. But when this sprite is drawn into a BitmapData, the sprite is being masked... but there is no such mask applied to that sprite! This "bad mask" can be toggled off and on... by applying / not-applying a different mask to the sprite I am drawing. This mask is not the same shape or location as the "bad mask".
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I'm making something that requires me to draw() the youtubeplayer Giving me this pretty error:
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I'm trying to do some lean blitting for an object that rotates by rotating it once at startup and capturing a BitmapData snapshot of each 5 degrees. The problem I'm having is that the draw() method of the BitmapData object is only picking up pixels in the MovieClip that are below and to the right of the registration point. If I change the MC so that the registration point is in the top left corner, I sometimes get what looks like most of the pixels, but the entire object rotates into and out of the frame, since it's rotating around the corner and not the center.
View 5 RepliesError #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;
img.source = bm;
I want to extract a bitmapdata from one of the first frames of a video flv, and it works correctly in Flash debug with these statements[code]...
When i test this in [url].. not work, I've inserted trace statements before and after this, and only the first are displayed.
how can I draw strings onto BitmapData, is there something like Java´s Graphics.drawString()?
View 2 RepliesRight now I only have this code, but I'm not using BitmapData.draw(). How can I write my code using BitmapData.draw()?[code]
View 2 RepliesWhen is a Bitmap not a Bitmap ?I can apply (using Sandy) an image as a texture :
var material:BitmapMaterial = new BitmapMaterial(new myImage(1,1));
myCone.appearance = new Appearance( material );
I can trace an object and form a bitmap :
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I am trying to copy an image.The green stuff on the first image is a mask(which is not set, its just there to show it)Everything works fine when I dont set a mask to an image (picture 1)But when I set the mask I get picture 2.What I want is to copy a part of the image which is visible when the mask is set. I know what size the mask and image are going to be so I can calculate the size of the area which i need to copy.This is the code I am using, image has registration point in the center, thats why i use matrix.translate (not sure if its the right way).Also there is no image scaling applied (there might be later), thats why I am using matrix.scale.
Code:
var _reflectionHolder:Sprite = new Sprite();
addChild(_reflectionHolder);
_reflectionHolder.y =_targetObject.y + _targetObject.height / 2 + 10;[code]......
I'm trying to use images from wikimedia to tile a shape, but Wikimedia does not use crossdomain.xml files, so I get a security error whenever I try to do anything with BitmapData.draw().
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I have a sprite with some objects in it which are transformed in 3D (positioned and rotated). The objects form a coneshape in such a way that the objects that make up the back are hidden.When I use that sprite as a source for the bitmapData.draw() it is drawn from another viewpoint so it seems. In my case the copy is viewed slightly from the bottom and right.
Bottomline:Does anyone know of a way to duplicate the image of a sprite which contains 3D manipulated graphics?
I am using NetStream.appendBytes() to play a local video (no server involved) in Adobe AIR. I would like to use BitmapData.draw() to take a picture of the video output, but I am getting this error:
Error #2123: Security sandbox violation: BitmapData.draw: cannot access null. No policy files granted access.
Here is some sample code:
package
{
import flash.display.Sprite;
import flash.filesystem.File;
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This is only sample code use for an explanation. The error would happen when calling the getImage method while the video is playing. The error mentions a policy file not found. Since the file is loaded locally there isn't really a place to put a policy file. Is there a policy setting somewhere that needs to be set or is the BitmapData.draw feature just not available when using appendBytes?
I'm currently working on a flash game and I need to know how to addChild a BitmapData or draw a BitmapData to screen. If I can't than how can I give a DisplayObject my BitmapData?
View 4 RepliesHow to tell BitmapData do draw MC on custom coordinates?
when I call draw function, it has not got argument of coordinates, where to draw, and It draws on x=0 and y=o coordinates, and if I want x=50?[code]...