Comments on: How to crop with AS3

By: Chris Lawrence

Chris Lawrence — Fri, 11 Jun 2010 01:31:31 +0000

First, let me say that you are a god!
I was struggling with this, and would not have figured it out on my own.

Second, let me offer up something useful.
I needed this because of problems with masking, and I needed my cropped image to maintain its transparency. Substituting this small change into your code will make it preserve any existing transparency:

var croppedBitmap:Bitmap = new Bitmap(new BitmapData(_width, _height, true, 0×00000000), PixelSnapping.ALWAYS, true);

By: ramel

ramel — Tue, 09 Mar 2010 19:27:33 +0000

Ok got it too a look at the as file. the displayObject is the first method in the function not the last. This is a great little script very cool.

By: ramel

ramel — Tue, 09 Mar 2010 17:51:49 +0000

Oh add I’m trying to copy a portions of the stage.

By: ramel

ramel — Tue, 09 Mar 2010 17:50:49 +0000

I’m trying to use this class but I am getting a “1180 call to possibly undefined method crop” I am just doing a test to play with it so Im using the code example above.

import nl.stroep.utils.*

var myCroppedImage:Bitmap = crop( 100, 100, 200, 200 );
this.addChild ( myCroppedImage );

what am I screwing up?

By: Mark Knol

Mark Knol — Fri, 08 Jan 2010 19:22:40 +0000

If you used copyPixel(), then you have a bitmap object? imagine your bitmap is named myBitmap, then this would be the code:

var myCroppedImage:Bitmap = crop( 100, 100, 200, 200, myBitmap );
this.addChild ( myCroppedImage );

By: satish

satish — Thu, 07 Jan 2010 15:50:37 +0000

Hello,

I have gone thru some of examples and i find them interesting.
I am trying to develop a crop tool having rectangle, circular, triangular kind of shapes. I did the

rectagular crop using copyPixel(). But I am not getting the other crop-shapes.
Can you help me out of this problem by giving suggestions or some hints.

I hope you will.

rgds,

Satish

By: kerja keras

kerja keras — Mon, 19 Oct 2009 10:50:59 +0000

thank for this great tips, its very helpful.

By: Mark

Mark — Thu, 27 Aug 2009 07:50:12 +0000

@israel: Did you try it? I think it is possible, because I think the google map (in flash) is a displayobject too. Only thing is that is wont update, till you crop again. I guess cropping each frame is cpu intensive. this crop is not suppose to be mask.
Please also take a look at this: http://code.google.com/apis/maps/faq.html#bitmapdata