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Re: Change Opacity of Image
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Re: Change Opacity of Image


  • Subject: Re: Change Opacity of Image
  • From: douglas welton <email@hidden>
  • Date: Thu, 6 Aug 2009 15:46:12 -0400

Core Image Filters are your friend.

Check out the CIFilter reference documentation and you'll find bunches of filters to handle compositing.


On Aug 6, 2009, at 1:29 PM, Pavel Dudrenov wrote:

Look into NSImage and NSCompositingOperation.

On Thu, Aug 6, 2009 at 10:17 AM, Pierce Freeman <email@hidden
wrote:

Hi Everyone:

I am looking for an easy way to fade into one photo from another photo. In
other words, from the middle "point", you can see both of the photos on top
of each other to compare the changes. I am currently using Quartz to do
this, but am running into a lot of trouble with that, so I am wondering
what
you all would suggest. I would be happy to send over my current project if
you would like - it's based off of Scott Stevenson's tutorial here:
http://cocoadevcentral.com/d/intro_to_quartz_two/.



Thanks for any help.

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  • Follow-Ups:
    • Re: Change Opacity of Image
      • From: Pierce Freeman <email@hidden>
References: 
 >Change Opacity of Image (From: Pierce Freeman <email@hidden>)
 >Re: Change Opacity of Image (From: Pavel Dudrenov <email@hidden>)

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