[QGIS-trac] [Quantum GIS] #1238: increase the precision of size settings in Symbology

[Quantum GIS]

#1238: increase the precision of size settings in Symbology
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   Reporter:  smizuno                          |              Owner:  nobody       
       Type:  enhancement                      |             Status:  new          
   Priority:  minor: annoyance or enhancement  |          Milestone:  Version 1.0.0
  Component:  Symbology                        |            Version:  HEAD         
   Keywords:                                   |   Platform_version:               
   Platform:  All                              |           Must_fix:  No           
Status_info:  0                                |  
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 I request that the various Symbology size settings have a precision to at
 least 4 places to the right of the decimal point, especially the Line
 width.

 Here is why: with only 0.01 precision for Outline width it is impossible
 to render lines on screen that are exactly one pixel, for example. There
 will be gaps or two pixel width short segments quite often, which are
 especially noticeable on straight lines.

 I believe that this behavior could cause some annoyance to many users (it
 annoys me because I can't set a better value that I know would work) and
 probably complaints.

 I know that when a map is rendered to a high resolution printer the
 precision of the size doesn't make much difference in the result, but it
 does affect low resolution devices like computer displays.

 I have found that a value of approximately 0.26458 for Outline width
 results in almost no gapping on a typical Windows computer. This may vary
 depending on platform.

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/1238>
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