Updating parameters of a CI filter on a CA layer
Updating parameters of a CI filter on a CA layer
- Subject: Updating parameters of a CI filter on a CA layer
- From: James Walker <email@hidden>
- Date: Mon, 12 Apr 2010 13:15:09 -0700
The documentation for the filters property of the CALayer class says:
"Filter properties should be modified by calling setValue:forKeyPath: on
each layer that the filter is attached to." But I don't understand
exactly how to write the key path, since the filters property is an
array rather than a single CIFilter. I looked through the KVC guide,
and though I saw array operators like @count, I couldn't find any way to
just ask for item number 0 in an array.
--
James W. Walker, Innoventive Software LLC
<http://www.frameforge3d.com/>
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