[Bug 1365404] [NEW] mogrify draw rectangle produces distorted borders

[universa1]

Public bug reported:

Drawing a rectangle using mogrify produces distorted borders. I used for
example the following command:

mogrify -draw 'stroke red stroke-width 5 fill red fill-opacity 0.1
rectangle 100,100 150,150' c1.png

This results in distorted borders, but correct background rectangle. See
the attached image. The bug also happens when using rmagick. The bug
also happend both on Ubuntu 13.10 and 14.04. I upgrade to 14.04 to see
if that fixes the problem, but it didn't. Drawing a circle works fine.


lsb_release -rd
Description:	Ubuntu 14.04.1 LTS
Release:	14.04

apt-cache policy imagemagick
imagemagick:
  Installiert:           8:6.7.7.10-6ubuntu3
  Installationskandidat: 8:6.7.7.10-6ubuntu3
  Versionstabelle:
 *** 8:6.7.7.10-6ubuntu3 0
        500 http://de.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: imagemagick (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "distorted borders on mogrify draw rectangle"
   https://bugs.launchpad.net/bugs/1365404/+attachment/4195253/+files/c1.png

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https://bugs.launchpad.net/bugs/1365404

Title:
  mogrify draw rectangle produces distorted borders

Status in “imagemagick” package in Ubuntu:
  New

Bug description:
  Drawing a rectangle using mogrify produces distorted borders. I used
  for example the following command:

  mogrify -draw 'stroke red stroke-width 5 fill red fill-opacity 0.1
  rectangle 100,100 150,150' c1.png

  This results in distorted borders, but correct background rectangle.
  See the attached image. The bug also happens when using rmagick. The
  bug also happend both on Ubuntu 13.10 and 14.04. I upgrade to 14.04 to
  see if that fixes the problem, but it didn't. Drawing a circle works
  fine.


  lsb_release -rd
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04

  apt-cache policy imagemagick
  imagemagick:
    Installiert:           8:6.7.7.10-6ubuntu3
    Installationskandidat: 8:6.7.7.10-6ubuntu3
    Versionstabelle:
   *** 8:6.7.7.10-6ubuntu3 0
          500 http://de.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

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