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The Basics
Id: 82558
Status: open
Priority: 80/
Queue: Imager
People
Owner: Nobody in particular
Requestors: bill_foster [...] symantec.com
Cc:
AdminCc:
Bug Information
Severity: Wishlist
Broken in: 0.93
Fixed in: (no value)

History Show all quoted text
  Tue Jan 08 03:30:54 2013 bill_foster [...] symantec.com - Ticket created
Subject: polygon should include all endpoints
Most, if not all, drawing methods will include the endpoints, but polygon does not and it seems that it should to be consistent (and easier to use for my purposes). If I draw a polygon with endpoints at 1,1 1,10 10,10 10,1, I get a 9x9 box. If I draw a box with xmin=1 xmax=10 ymin=1 ymax=10, I get a 10x10 box. If I use polyline with the same args as polygon, I get a 10x10 box. I have tried to resolve my issue by drawing a polyline on top of polygon, but the ansi-aliasing causes problems. I am using Imager .93 with Perl 5.12. Thanks!
  Thu Jan 10 18:14:54 2013 tony [...] develop-help.com - Correspondence added
Subject: Re: [rt.cpan.org #82558] polygon should include all endpoints
Date: Fri, 11 Jan 2013 10:14:43 +1100
To: Bill via RT <bug-Imager [...] rt.cpan.org>
From: Tony Cook <tony [...] develop-help.com>
On Tue, Jan 08, 2013 at 03:30:55AM -0500, Bill via RT wrote: Show quoted text
> Most, if not all, drawing methods will include the endpoints, but > polygon does not and it seems that it should to be consistent (and > easier to use for my purposes). If I draw a polygon with endpoints at > 1,1 1,10 10,10 10,1, I get a 9x9 box. If I draw a box with xmin=1 > xmax=10 ymin=1 ymax=10, I get a 10x10 box. If I use polyline with the > same args as polygon, I get a 10x10 box. > > I have tried to resolve my issue by drawing a polyline on top of > polygon, but the ansi-aliasing causes problems. > > I am using Imager .93 with Perl 5.12.
polygon() won't ever include the end-points by default, but I may add an option in the future to do so. Doing that is complicated by having to modify the supplied polygon to wrap itself around the pixels, which may impose some limits on the supplied polygon, eg. points supplied in clock-wise order, no line crossing. Tony
  Thu Jan 10 18:14:54 2013 The RT System itself - Status changed from 'new' to 'open'
  Mon Jan 21 05:34:17 2013 TONYC [...] cpan.org - Priority changed from (no value) to '80'
  Mon Jan 21 05:34:17 2013 TONYC [...] cpan.org - Severity Important changed to Wishlist