Re: Getting pixel color from NSView
Re: Getting pixel color from NSView
- Subject: Re: Getting pixel color from NSView
- From: Andrew Farmer <email@hidden>
- Date: Sun, 25 Jan 2009 13:35:02 -0800
On 25 Jan 09, at 11:06, Ashley Perrien wrote:
Is there a way to get the color of a pixel or area of an NSView
during the drawRect method? I'll be tiling the view with a grid of
random colors but each tile is based on the colors around it...
While there are some methods you can use to determine the current
color of a point on screen, there is no guarantee that they will be
meaningful in the middle of a drawRect call.
... rather than creating and filling a potentially quite large array
of colors.
This array is probably going to be a lot smaller than you're imagining
it to be, especially if you use C arrays of color values for storage
(rather than NSArray[NSArray[NSColor]]).
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