Comments on: Rotating BitmapData with Actionscript 3 http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm Wed, 08 Feb 2012 13:08:03 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Eric http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm/comment-page-1#comment-7800 Eric Sun, 31 Jul 2011 15:25:21 +0000 gray_hare - Actually he is rotating the bitmapdata when he's drawing it into the new bitmap, and the new bitmap has a "new Matrix" which is a non rotated matrix. Also there is a better way to do this. Use this for 90 degree rotation: var matrix = new Matrix(0, -1, 1, 0, 0, bmd.height / 2); Use this for 180 degree rotation: var matrix = new Matrix(0, -1, -1, 0, bmd.width / 2, bmd.height / 2); Use this for 270 degree rotation: var matrix = new Matrix(0, 1, -1, 0, bmd.width / 2, 0); This is a lot faster and accurate. gray_hare – Actually he is rotating the bitmapdata when he’s drawing it into the new bitmap, and the new bitmap has a “new Matrix” which is a non rotated matrix.

Also there is a better way to do this.

Use this for 90 degree rotation:
var matrix = new Matrix(0, -1, 1, 0, 0, bmd.height / 2);

Use this for 180 degree rotation:
var matrix = new Matrix(0, -1, -1, 0, bmd.width / 2, bmd.height / 2);

Use this for 270 degree rotation:
var matrix = new Matrix(0, 1, -1, 0, bmd.width / 2, 0);

This is a lot faster and accurate.

]]> By: karl http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm/comment-page-1#comment-7603 karl Mon, 09 May 2011 08:14:16 +0000 thnx, you helped me out here.. thnx, you helped me out here..

]]> By: James http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm/comment-page-1#comment-7415 James Thu, 24 Feb 2011 00:13:06 +0000 <b>gray_hare</b> - Isn't the end result the same though? It's not like this is a filter that's being applied, we input one bitmapdata object, and get another, rotated version of the bitmapdata. gray_hare – Isn’t the end result the same though? It’s not like this is a filter that’s being applied, we input one bitmapdata object, and get another, rotated version of the bitmapdata.

]]> By: gray_hare http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm/comment-page-1#comment-7414 gray_hare Wed, 23 Feb 2011 20:13:22 +0000 You're not actually rotating BitmapData here as the tittle suggests. You're just telling BitmapData object how pixels have to be drawn and this is not the same. You’re not actually rotating BitmapData here as the tittle suggests. You’re just telling BitmapData object how pixels have to be drawn and this is not the same.

]]> By: Teo http://www.psyked.co.uk/actionscript/rotating-bitmapdata.htm/comment-page-1#comment-7357 Teo Sun, 26 Dec 2010 22:20:21 +0000 +1)) +1))

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