On 23.11.2009, at 19:01, R T wrote:
> Given: A litho Image, Black & White pixels only.
> I want to show just the Black Pixels in a subclassed NSView.
Use CoreGraphics. The CGxxx APIs let you set a mask on the current graphics
context. Essentially you get a CGImage from your NSImage, specify that
Here is a method that applies 'mask' based on a given NSColor. ie, you
pass it an NSImage, a NSColor (in your case, white), and a threshold,
and it will make transparent all the pixels of that color within a
threshold. So you can use this to knock out the white pixels of an
NSImage.
Then, of cours
Am 23.11.2009 um 19:01 schrieb R T:
> Given: A litho Image, Black & White pixels only.
> I want to show just the Black Pixels in a subclassed NSView.
Underlay all white pixel with an alpha of 0 and composite that?
atze
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Cocoa-dev mailing
Given: A litho Image, Black & White pixels only.
I want to show just the Black Pixels in a subclassed NSView.
I've posted previously with some code and had 1 simple response that has not
panned out for me. Any ideas out there, anybody been down this road?
Thanks
Rick
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