[GRASS-dev] [GRASS-trac] #20: Vector point shift in wxgrass after pan

#20: Vector point shift in wxgrass after pan
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Reporter: marisn | Owner: grass-dev@lists.osgeo.org
     Type: defect | Status: new
Priority: major | Milestone: 6.3.0
Component: default | Version: svn-trunk
Keywords: |
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After panning around in wxgrass map window, some points are drawn shifted
away from their location.
Steps to reproduce:[[BR]]
1) Add some line layer in wxgrass (i.e. roads from spearfish6);[[BR]]
2) Add some point layer (i.e. bugsites);[[BR]]
3) Take a screenshot;[[BR]]
4) Pan map;[[BR]]
5) Take a screenshot;[[BR]]
6) In Gimp (or any other raster manipulation soft) combine both
screenshots in such way, that line layer features match;[[BR]]
7) Examine all point features and notice unsharp points - those are not
drawn in same place as in first screenshot.[[BR]]

User may expect, that all points are drawn with same distances between
them during pan.

GRASS svn trunk Revision: 29746[[BR]]
32bit Gentoo with wxpython-2.8.7.1

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Ticket URL: <http://trac.osgeo.org/grass/ticket/20&gt;
GRASS-trac <http://grass.osgeo.org>
GRASS Geographic Information System (GRASS GIS) - http://grass.osgeo.org/

#20: Vector point shift in wxgrass after pan
---------------------+------------------------------------------------------
  Reporter: marisn | Owner: grass-dev@lists.osgeo.org
      Type: defect | Status: new
  Priority: major | Milestone: 6.4.0
Component: Python | Version: svn-trunk
Resolution: | Keywords: wxgui
---------------------+------------------------------------------------------
Changes (by martinl):

  * keywords: => wxgui
  * component: default => Python
  * milestone: 6.3.0 => 6.4.0

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Ticket URL: <http://trac.osgeo.org/grass/ticket/20#comment:1&gt;
GRASS-trac <http://grass.osgeo.org>
GRASS Geographic Information System (GRASS GIS) - http://grass.osgeo.org/

#20: Vector point shift in wxgrass after pan
---------------------+------------------------------------------------------
  Reporter: marisn | Owner: grass-dev@lists.osgeo.org
      Type: defect | Status: new
  Priority: major | Milestone: 6.4.0
Component: wxGUI | Version: svn-trunk
Resolution: | Keywords: wxgui
---------------------+------------------------------------------------------
Changes (by martinl):

  * component: Python => wxGUI

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Ticket URL: <http://trac.osgeo.org/grass/ticket/20#comment:2&gt;
GRASS GIS <http://grass.osgeo.org>

#20: Vector point shift in wxgrass after pan
--------------------------+-------------------------------------------------
  Reporter: marisn | Owner: grass-dev@lists.osgeo.org
      Type: defect | Status: new
  Priority: major | Milestone: 6.4.0
Component: wxGUI | Version: svn-trunk
Resolution: | Keywords: wxgui
  Platform: Unspecified | Cpu: Unspecified
--------------------------+-------------------------------------------------
Changes (by martinl):

  * platform: => Unspecified
  * cpu: => Unspecified

Comment:

Can you still reproduce this bug with current wxGUI?

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Ticket URL: <http://trac.osgeo.org/grass/ticket/20#comment:3&gt;
GRASS GIS <http://grass.osgeo.org>

#20: Vector point shift in wxgrass after pan
--------------------------+-------------------------------------------------
  Reporter: marisn | Owner: grass-dev@lists.osgeo.org
      Type: defect | Status: closed
  Priority: major | Milestone: 6.4.0
Component: wxGUI | Version: svn-trunk
Resolution: worksforme | Keywords: wxgui
  Platform: Unspecified | Cpu: Unspecified
--------------------------+-------------------------------------------------
Changes (by cmbarton):

  * status: new => closed
  * resolution: => worksforme

Comment:

This ticket is over a year and a half old and seems inactive. The display
system has been regularly improved over this time. I just replicated the
steps above on the current 6.4 (compiled a couple days ago) on a Mac and
there is no shift. All vectors line up perfectly as far as I can see.

I'm changing this to fixed. If someone still has a problem, we can change
it back.

Michael

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Ticket URL: <http://trac.osgeo.org/grass/ticket/20#comment:4&gt;
GRASS GIS <http://grass.osgeo.org>