Re: Cocoa graphics speed
Re: Cocoa graphics speed
- Subject: Re: Cocoa graphics speed
- From: Marco Scheurer <email@hidden>
- Date: Tue, 30 Sep 2003 11:35:50 +0200
On Tuesday, September 30, 2003, at 12:54 AM, Alastair J.Houghton wrote:
On Monday, September 29, 2003, at 11:18 pm, Chris Hanson wrote:
One way to speed up your code would be to create a real NSBezierPath
for the rectangle, and keep the path itself around.
Are you sure? I'm pretty certain that NSRectFill() is faster than
using an NSBezierPath to draw the same rectangle, even if you don't
create the NSBezierPath every time.
You can get quite a good performance increase (about 10 times) by
using NSRectFillList() rather than NSRectFill(), assuming that it's
possible to sort the rectangles by colour. If it isn't possible to do
that, then NSRectFillListWithColors() is still faster than
NSRectFill() by a fair margin.
Yes, NSRectFillList() is a fast way of drawing many rectangles (see
http://cocoa.mamasam.com/COCOADEV/2003/01/1/53404.php )
Marco Scheurer
Sen:te, Lausanne, Switzerland
http://www.sente.ch
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