Flex :: Cropping/Clipping A Sprite?
Jul 7, 2010
How is cropping/clipping accomplished on a Sprite in Flex?
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" creationComplete="Init()">
<mx:Script>
<![CDATA[
[code]....
Notice that the lineTo completely leaves the UIComponent and Panel.How can I cause my UIComponent or Sprite, Or Panel for that matter, to be cropped/clipped? I realize I could just change the hard-coded 2222's to something more reasonable, but I need a generalized solution to this, since the actual project doesn't involve hard-coded values that I can alter, but works with dynamic data.
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Jan 29, 2010
I 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
{
[code].....
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May 2, 2010
SO I am working on animating a 20/fps sprite (an SCV from Starcraft 2). The animation is 1 second long, and thus 20 frames. I have made a sprite sheet in photoshop, and have each frame as a separate layer. I import the PSD into my library and have it convert the layers to "Flash Frames". I get each frame nicely tucked away as a layer in my library. Problem is, it gives an ugly white border (about 1 to 2 pixles thick) around my sprites, making it look like I did a terrible crop job. However, the crop job is fine (I can change the background in the PSD to black, and the cropped sprite frames look perfect! What have I done wrong or need to do?
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Aug 24, 2011
I have a container with a vertical layout inside which I have two other child containers "A" and "B". n the first container "A" there is a component that I would like to resize dynamically based on the available display size. To to that I tried listening to the resize event of the main container and do my measures accordingly. That works somewhat until the parent container reaches a clipping size : container "B" gets clipped earlier than "A" because it contains much more stuffs : As soon as the parent container reaches "B"'s clipping size, it does not resize anymore (so no more resize event either) thus preventing me from updating my component's display in "A".
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Jan 29, 2010
var snapshot:ImageSnapshot = ImageSnapshot.captureImage(someSprite);
var file:FileReference = new FileReference();
file.save(snapshot.data,'abc.png');
n the above code I am able to capture an image.But I also want to apply a scalingMatrix(for zoomIn/Out) and a clipping rectangle to it. How to do it? I tried capturebitmapdata too, but with that I can't even get a proper image. See here. So I don't want to use that.
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Apr 26, 2011
I have created a image cropping tool in flex using core copyPixel method.croppedBitmapData.copyPixels(croppedBitmapData, clipCan, new Point(0, 0));I have to crope area of dementions 20*20 and show this cropped area in an image of demention 250*350. Every thing going well.My problem is image distortion.Even i am using this method for smoothing image contents on complete.
private function smoothImage(event:Event):void
{
var bitmap: Bitmap = ((event.target as Image).content as Bitmap);
[code]....
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Jun 30, 2009
I noticed that for some reason whenever I use the 3d rotation tool on an object inside of a clipping mask that the object releases the clipping mask. Are 3d objects not supported within clipping masks? Is there a way around that?
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Sep 8, 2009
The last 2 characters or so are partially obstructed by parentheses.
For example, when I type: "stop()" it looks like "sto()".
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Jan 21, 2010
I have a simple flash video player that streams the video from a streaming media server. The stream plays fine and I have no problems with playing the video and doing simple functions. However, my problem is that on a mouse over of the video, I have the controls come up and when I do a seek or scrub on the video, I get little weird boxes that show over the video - like little pockets - of the video playing super fast (you can basically see it seeking) until it gets to the point it needs to be at and then these little boxes disappear.
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Feb 12, 2011
I am trying to figure out bitmapdata and was attempting to draw 2 ellipses as sprites,capture the bitmapdata and then spit them out with draw(). The problem is, there is some nasty clipping and I don't know how to get rid of it. I have tried using rect and messing with the draw parameters but nothing seems to work.
Code:
public class fhParticle extends MovieClip
{
[code]....
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Sep 27, 2010
I want to create a MovieClip symbol of a certain width and height, but with content that extends outside its boundaries, with the option to have the external content be clipped/hidden or visible.
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Aug 22, 2011
I've been playing with the dynamic audio library standingwave 3. Almost the first thing one notices is that if one tries out the code samples in the developer's guide, namely this code:
[code]...
then one gets a really unpleasant sound and trace messages that read "AUDIO CLIPPING". The developer explains in one of the issue reports on github that you need to reduce the gain of samples when you mix them together to avoid this, and that there's no easy way to know dynamically how much reduction is needed.My question is, how is it that stangingwave2 seems to have dealt with this automatically? For instance, the code quoted above did not clip in SW2. Likewise consider this SW2 example demo - if you increase the sustain and hold (the S/H sliders) and press one of the sequence buttons, multiple tones will overlap without clipping, even though the source doesn't show any apparent sign of changing the gain or the volume of the sin tones, they just get mixed together.What's going on here - did SW2 have some way of dealing with this automagically, or is there some robust way of generally overlaying arbitrary numbers of sounds dynamically without causing clipping?
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Feb 4, 2011
when I move the camera around my scene the rendering at certain points is odd. Triangles become missing and it seems as though its just not working correctly. When you move the camera beside the cube, triangles along the side of the cube go missing. Is there a way I can turn the clipping off? Should I use more triangles? Is it a material/render engine/viewport problem?
[Code]...
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Mar 15, 2006
I m building a site whit transparency so my background HTML can bee viewed, at some point I load a movie on level1, it's supposed to bee smaller than the Level0 movie but instead I end up getting flaps on the level0 movie because the original content of the level1 movie sticks out, I can't put a mask for it will occlude the HTML background, and it doesnt matter if I keep shortening the loaded movie it still shows up like it has a mind of its own...
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Nov 28, 2011
I have a Plane and I try tweening a MovieClipSprite on it. I run into trouble when I try to tween near the points where both segment triangles meet (I have kept both segments as 1), While moving near these points the Sprite disappears. I can tell it goes beneath the Plane because when it reappears it does so gradually and I can see it's lower half appearing as it moves away from these points. Increasing the segments obviously deteriorates the performance further as this begins to happen at other points as well. I am pasting some relevant code var planeMaterial:BitmapMaterial = new BitmapMaterial(texture.bitmapData, {smooth: true, precision: 4});
[Code]....
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Dec 1, 2010
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Mar 9, 2011
The Camera video is played well in other applications, but when I am using Camera in flash applications to play the live video, then video is cropped.
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Jun 4, 2008
Does anyone know of a way to crop out whitespace/transparent pixels in a BitmapData object? I've got this movieclip I'm rendering that has a huge amount of whitespace all around it. I'd like to crop all of that out before I convert it to a JPEG (with corelib). Is there a way to do this? I can't seem to find a way to figure out where the first opaque pixel starts on each axis to determine the extents.
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Sep 9, 2009
I have been trying to import clipping paths into Flash, but the images look fine, except for the white outline around the imported clipping paths. what I could do to remove this. The clipping path looks fine when I drop it on the same color background in Illustrator. I'm using CS2 and Flash 8.
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Nov 18, 2009
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;
[Code].....
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Jun 8, 2010
I want to know how can i make something like if any one scale browser my site will scale in aspect ratio without cropping
something like jimcarrey website [URL]
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Aug 24, 2009
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Feb 14, 2011
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Dec 10, 2011
I want to display an image, and it should be transformed like this:If for example, my original image is 200x300 pixels in size, I want it to have a width of 150, and then scale the height accordingly. Then I want to crop the image, so that the result has a dimension of 150x150 pixels.
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Oct 6, 2007
After seeing the I've been told that movieclips aren't suited for games, what do you use? thread, I thought I would try to incorporate the approach into a game I'm currently programming to make it a little less processor intensive.
I have a giant movieclip of a football field, of which only 5-10% is shown at any given time. I'm guessing that flash still has to make calculations for the other 90-95% of the field every frame, even though it's of no use. From what I understand (not much), copyPixels seems like the perfect candidate for such a situation.
It seems simple, but I'm having trouble actually implementing it, and I'm not sure which actions are needed and what might be introducing unnecessary work. I have a movieclip (mc_field, exported for as), but if it would save the processor some effort,I could easily save this as a bitmap and export that for actionscript. The width and height of the final product (bitmap/BitmapData) will be Stage.width, Stage. height,respectively,and I can handle making the calculations of the x,y coordinates of the rectangle cropping (which part of the source bitmap I want to crop).I'm sure it's only 3 lines of code, and I know that there are a few examples online, but for some reason.
Say, for frame one, I want to take the field (either mc_field or bm_field) and copy 500px x 300px, starting at 140,230 from the source bitmap to mc_container.Then, for frame two, I want to copy 500px x 300px starting at 240,540 from the source bitmap to mc_container.
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Jul 27, 2009
When using the Loader class to load an external SWF into another timeline and then displaying that SWF using addChild on the loader.content, one discovers to one's consternation that elements positioned off the stage of the external SWF are still displayed.To illustrate this with an example: suppose you have a 500x500 pixel "main" SWF, and it loads an external SWF at runtime and positions it in the center of the stage. And suppose that this external SWF's document properties set the stage width to 200 x 200 pixels. However, when authoring this external SWF, we draw a box that's 300 x 300 pixels, so part of this box is actually off-stage.
When you play the external SWF in the standalone Flash player, it is sized correctly at 200 x 200 pixels, and the rest of this box is cropped off.When you load this external SWF into the "main" SWF and use addChild() to put it on the stage, you will see the full 300 x 300 pixel boNow of course, we can simply solve the issue using a mask, but I'm wondering whether there's a more elegant solution that's built in, either to the MovieClip or the Loader or the LoaderInfo classes. Something that says "respect the document bounds of the original SWF" or "crop to stage dimensions".
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Apr 1, 2010
I've read through umpteen Flash threads of frustrated users who export SWF and anything visible outside the stage appears in the SWF when opened in a browser.None of the solutions have worked for me.My file is called statement_onlineheader.fla.URL...I have my mask layer above a folder containing all other layers.I have also tried moving the mask layer above individual layers.Stuff outside the stage appears in the exported SWF.
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Apr 20, 2011
I need to include a feature on an app I'm building that allows the user to upload an image and manipulate it in various ways including adding text. This is basically a way to design custom printed merchandise as is already found on many websites and will be overlayed on a background image of whatever is being customised e.g. T-Shirt.The basic requirements are: resize, crop and rotate image against background. Overlay and change position/colour/style of text against image. Preview the final design against the background.
I know that flash is possibly the best solution but I was really hoping to avoid it and use Jquery instead. While there is plenty out there for resizing and cropping images with javascript there doesn't seem to be anything that fits my needs.
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Mar 5, 2010
I created a class, extended the sprite class, and now in the constructor I am trying to set the Sprite's width and height properties which are inherited from the DisplayObject. However, after I set this.width and this.height, and print the values, I get 0 for both.
What the heck is going on? When I view the livedocs I see that DisplayObject has width and height listed as public properties. I have been able to instantiate a Sprite directly, and set the width and height after it's been instantiated, so I don't get it.
package {
import flash.display.*;
public class ScrollBar extends Sprite {[code].....
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Apr 4, 2011
I've got a sprite which I want to temporarily hide... But changing the .visible property doesn't do what I expect. The code looks roughly like this:
[Code]...
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