Re: CGShading
Re: CGShading
- Subject: Re: CGShading
- From: "John C. Randolph" <email@hidden>
- Date: Tue, 12 Oct 2004 11:48:39 -0700
On Oct 12, 2004, at 11:38 AM, John C. Randolph wrote:
On Aug 1, 2004, at 9:27 AM, Ricky Sharp wrote:
On Aug 1, 2004, at 9:13 AM, Ricky Sharp wrote:
Here's some sample code that creates a pretty cool gradient by
using a Category for NSImage:
<http://developer.apple.com/samplecode/Transformed_Image/
Transformed_Image.html>
When I wrote that code, CGShading wasn't available. If I were
writing that sample today, I'd use GCShading. I should also point out
that the code assumes that bytesPerRow == pixelsWide, which isn't
necessarily the case.
Correction: I meant to say it assumes that bytesPerRow == (pixelsWide
* 4), which isn't necessarily true. In future versions of AppKit and
CoreImage, bitmaps may get padded to allow for word or long word
alignment for optimization.
-jcr
John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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