~~NOTOC~~

====== SXRadialBlurFilter ======

---- dataentry extension ----
author_mail   : alessandro.maroso@gmail.com Alessandro Maroso
description   : A simple radial blur filter. # enter a short description of the extension
lastupdate_dt : 2014-11-27 # the date you created the extension
compatible    : v2.1 # the Sparrow version you tested the extension with
depends       :  # if the ext. depends on others, list them here
tags          :  # enter a few tags, separated by commas
homepage_url  : https://gist.github.com/membersheep/bbf5f7d0b524913b592e
download_url  : https://gist.github.com/membersheep/bbf5f7d0b524913b592e/download
----


===== Usage =====

Altering the parameters will dinamically affect the result.

Usage example:

<code objc>
SXRadialBlurFilter *filter = [SXRadialBlurFilter blurFilter];
filter.blurCenterPosition = [SPPoint pointWithX:center.x y:center.y];
filter.distance = 1;
filter.strength = 2;
displayObject.filter = filter;
</code>

{{ :extensions:radial-blur.png?nolink |}}

=== Notes ===

  * The filter is written with MRC; if you want to add this filter in an ARC-enabled project, follow [[http://jeffreysambells.com/2012/02/21/disable-arc-in-xcode-on-a-per-file-basis|these steps]] to selectively deactivate ARC for the radial blur filter.
  * Use the ''marginX/Y'' property of the filter if it the effect is cut at the sides.
  * Change the "blur" parameter to change the number of passes. More passes result in a smoother blur but also worse performances.
===== Changelog =====

  * //2014/11/27 20:58//: First public version

===== Source Code =====

%gist(bbf5f7d0b524913b592e)%

===== Discussion =====

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