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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: Pierce Freeman <email@hidden>
  • Date: Thu, 06 Aug 2009 14:10:58 -0700
  • Thread-topic: Change Opacity of Image

Hi Douglas:

Do you have one that you can suggest?  It doesn't have to do much - just
change the opacity.


On 8/6/09 12:46 PM, "douglas welton" <email@hidden> wrote:

> 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: Rob Keniger <email@hidden>
References: 
 >Re: Change Opacity of Image (From: douglas welton <email@hidden>)

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