Re: Converting colorspace of a CGColor
Re: Converting colorspace of a CGColor
- Subject: Re: Converting colorspace of a CGColor
- From: edward m taffel <email@hidden>
- Date: Sat, 04 Apr 2015 05:13:09 -0400
Sent from my iPhone
> On Apr 3, 2015, at 10:19 PM, Graham Cox <email@hidden> wrote:
>
>
>> On 4 Apr 2015, at 1:13 pm, Roland King <email@hidden> wrote:
>>
>> That’s most definitely not what Graham is looking for. He’s looking for a way to convert colours programatically, and cross-platform iOS and OSX (no colorsync on iOS).
I meant the ColorSync api (what did you think I meant?) but was not aware iOS did not rely on ColorSync,
if you had not already done so, you might look at:
https://developer.apple.com/library/ios/technotes/tn2313/_index.html#//apple_ref/doc/uid/DTS40014694-CH1-ACTIVECOLORMGMTCOLORSYNC-HOW_DOES_COLORSYNC_WORK_
> That's right. In short, a CG equivalent to -[NSColor colorUsingColorspace:] is what I need
why don't you just use cocoa?
> - I just need to ensure that colours that could originate as grays for example, end up as RGBA colours, since I'm doing work directly on the four components. Converting gray is easy enough actually, if I have to do that myself, but it would be nice if there were a funciton that would work across all possible colorspaces.
>
> I thought Id' seen a CG function for this in the past, but I can't remember where I saw it and I may be mistaken.
>
> --Graham
>
>
>
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