[QGIS-trac] [Quantum GIS] #3639: Incorrect rendering of rasters at big scales

[Quantum GIS]

#3639: Incorrect rendering of rasters at big scales
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   Reporter:  goyodiaz                          |              Owner:  nobody       
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.7.0
  Component:  Rasters                           |            Version:  Trunk        
   Keywords:                                    |   Platform_version:  Ubuntu 10.10 
   Platform:  Debian                            |           Must_fix:  No           
Status_info:  0                                 |  
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 When zoomed so that raster pixels are shown as big squares they are
 shifted. The value tool shows the correct values though. Maybe a floating
 point issue.

 Steps to reproduce:
 1. Uncompress the attached file and open the sample.qgs project.
 2. Zoom and pan. See how pixels change their locations with respect to the
 point. Some pixels become rectangles sometimes.

 Images showing the problem are also included.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3639>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats