On 29/05/2011, at 3:50 PM, Roland King wrote: > You can use CGColorGetComponents on a CGColorRef to get the values of > whatever colorspace the CGColorRef is in and you can create new CGColorRefs > with those values. > > I don't see a way to convert from one colorspace to another however a quick > test on one UIColor constructed with HSV values shows its contained > CGColorRef to have an RGB colorspace which you could get the RGB values from. > Whether you can rely on that I don't know and haven't found any documentation > to back it up.
Thanks Roland, and Kyle too. I found the same thing, so going from HSV -> RGB isn't a big problem. I'm pretty sure HSV isn't a different colourspace, it's just a convenient way to interpret RGB values. Using some simple code I looked up on the web, I wrote a method to return the RGB colour as HSV. Seems to give me the results I was looking for (since it's just for making some nice-looking gradients, it's not critical that it has super-accuracy, though I believe the code to be accurate anyway). --Graham _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
