[OpenLayers-Trac] [OpenLayers] #1243: allow for non-discrete resolution/zoom levels (fractional zoom)

[OpenLayers]

#1243: allow for non-discrete resolution/zoom levels (fractional zoom)
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  Reporter:  tschaub  |       Owner:  tschaub 
      Type:  feature  |      Status:  assigned
  Priority:  minor    |   Milestone:          
 Component:  Map      |     Version:  2.5     
Resolution:           |    Keywords:          
     State:           |  
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Comment (by tschaub):

 I think this is a fairly non-invasive change to get this functionality.
 The things it does change aren't liable to haunt us (in my opinion).  If
 an app designer sets map.fractionalZoom to true, they should know not to
 access layer.resolutions[zoom] directly.

 I added a map.allowFracZoom method.  I don't necessarily like this, but it
 makes things degrade well for commercial layers.  The part I don't like is
 the check for a RESOLUTIONS constant.  But I like less the alternative of
 modifying anything in the FixedZoomLevels layers.

 (As an aside, I'm also curious about the this.resolutions != null checks
 in FixedZoomLevels.  Since all the classes in our lib that inherit from
 FZL have a RESOLUTIONS constant, and initResolutions sets resolutions, I
 don't immediately see when this condition would ever be met.  But I'll
 leave that for elsewhere.)

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Ticket URL: <http://trac.openlayers.org/ticket/1243#comment:6>
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A free AJAX map viewer