[mapserver-users] PHP-mapscript before/after draw discrepancy

[Shorthouse, David]

On Wed, Sep 28, 2011 at 5:51 PM, Cristiano Sumariva <sumariva at gmail.com> wrote:
> Well after reading the discussion in the link I guess you need to implement
> double msAdjustExtent(rectObj *rect, int width, int height) mapserver
> function in your language
> and update size then the extent on map object using the mapscript API.

Thanks for the response Christiano. Indeed, I *might* be able to
pre-calculate what the eventual extent will be after the draw() method
as Tamas suggested, assuming I don't bungle the logic. However, this
feels backward, especially since I have to design a front-end to
compensate for it. Why is the extent being mysteriously (read
inaccessibly) adjusted in the the first place?

David P. Shorthouse

> 2011/9/28 Shorthouse, David <dshorthouse at eol.org>
>>
>> I am using PHP-mapscript and am bumping into this old issue:
>>
>> http://osgeo-org.1803224.n2.nabble.com/Mapscript-extent-prediction-td1991453.html,
>> which is now a show-stopper for me.
>>
>> I tried using CONFIG 'MS_NONSQUARE' 'yes', which does *initially*
>> produce an extent after draw precisely the same as provided with
>> setExtent. However, my application also make heavy use of zoompoint
>> and zoomrectangle, which no longer work as expected after having set
>> this CONFIG.
>>
>> Anyone have any suggestions on how to get an extent that is precisely
>> the same before and after the draw method?
>>
>> Thanks in advance,
>>
>> David P. Shorthouse
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>
>