Re: NSBezierPath stroke gives weird AA result.

• Subject: Re: NSBezierPath stroke gives weird AA result.
• From: Ryan Britton <email@hidden>
• Date: Thu, 11 Aug 2005 18:01:42 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Something like this:
NSAffineTransform *transform = [NSAffineTransform transform];

[transform translateXBy:0.5 yBy:0.5];

[yourPath transformUsingAffineTransform:transform];

On Aug 11, 2005, at 3:30 PM, Bertrand Landry-Hetu wrote:

looks like the attachment did not make it. made it available on the web:

http://software.landryhetu.com/NSBezierPathProblem.png

2005/8/11, Bertrand Landry-Hetu <email@hidden>:

Hi list,

I'm trying to draw a frame for some thumbnail I'm going to show in my
app. My graphic designer did some mockups in Illustrator that looks
great. It is basically a rectangle of which 2 corners are round (so
half a rounded rect :) ).

When I try to draw it using Quartz I get some weird anti aliasing
problems. I'm using [NSBezierPath appendBezierPathWithArcFromPoint:
...] to create the curved corners of the frame.

Everything looks fine when I fill the path, but it really looks ugly
when I stroke the path. It looks like the stroke is wider in the
curves. (see attached pic).

Anybody has any idea ?

Here is the code:

NSBezierPath * path = [NSBezierPath bezierPath];

[path moveToPoint: topRight];

[path appendBezierPathWithArcFromPoint: topLeft
toPoint: bottomLeft
radius: radius];

[path lineToPoint: bottomLeft];

[path appendBezierPathWithArcFromPoint: bottomRight
                                                   toPoint: topRight
                                                    radius: radius];

[path lineToPoint: topRight];

[path closePath];

Thanks.

Bertrand.

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