Re: NSBezierPath hit- or proximity-detection.
Re: NSBezierPath hit- or proximity-detection.
- Subject: Re: NSBezierPath hit- or proximity-detection.
- From: David Remahl <email@hidden>
- Date: Fri, 21 Feb 2003 15:19:07 +0100
http://cocoadev.com/index.pl?HitDetection
/ Rgds, David
The Cocoa docs suggest that "Using methods of NSBezierPath, you can
also
perform hit detection on the filled or stroked path."
I draw a simple set of open curves that do not enclose pixels as such,
but the
line width is sufficient that a user can easily click on the path.
[NSBezierPath contains:] does not recognize such a click.
Is there any other approach that could? I have used NSReadPixel for a
stopgap
solution but this requires each path to be a unique colour.
Other things I'd like to do:
- given a coordinate, get the distance to the closest point on the
path
- given a distance on the path, query the coordinate of the drawing
pen
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