Re: Bug in [path containsPoint]?
Re: Bug in [path containsPoint]?
- Subject: Re: Bug in [path containsPoint]?
- From: "John C. Randolph" <email@hidden>
- Date: Fri, 3 Jun 2005 16:38:18 -0700
Are you sending -closePath, or just adding a path segment back to the
first point?
-jcr
On Jun 2, 2005, at 1:05 PM, Brian O'Brien wrote:
I think I've found a but in NSBezierPath, but not sure.
I've written an application that draws a polygon on top of an image
(using mouse clicks)
After the polygon (a simple triangle) is defined and the mouse
enters the polygon the image is filled with a particular pixel color.
I get the bounding box of the polygon then check each pixel in the
bounding box (using containsPoint) to determine
if the image's pixel should be changed.
Depending on the order that the polygon was defined (ie left hand
rule vs right hand rule) I get different values
for contiansPoint and in fact some of the values are not even in
the polygon boundary. (the bug)
Can someone verify that this happens one their system as well?
I'm on 10.3.9
<Picture 1.pdf>
Notice the bottom polygon has a white horizontal line outside the
polygon, where as the other doesn't?
This is reproducible in my application.
John C. Randolph <email@hidden> (408) 974-8819
Lame Duck Cocoa Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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