Re: fast text
Re: fast text
- Subject: Re: fast text
- From: "John C. Randolph" <email@hidden>
- Date: Mon, 25 Nov 2002 15:37:30 -0800
On Monday, November 25, 2002, at 03:27 PM, Alexander White wrote:
Thanks for the help. I have one more question. In my program I do
some animation with images. My experience there suggest that it is
faster to draw a CGImageRef to a CGContextRef than to draw a NSImage
to the current NSGraphicsContext. I know how to get a CGContextRef
using [NSGraphicsContext currentContext], but I do not know how to get
a CGImageRef form a NSImage. Do you know how to do this?
I haven't had occasion to do this, but you can get the raw image bytes
from an NSBitmapImagRep with the -bitmapData method. You should be
able to to create a CGImage from that, given that you can query the
bits per sample, samples per pixel, etc from the BitmapImageRep.
-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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| | >Re: fast text (From: Alexander White <email@hidden>) |