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List:       mapserver-dev
Subject:    Re: [mapserver-dev] Support for the MapInfo style zoom layeringoption.
From:       Håvard_Tveite <havard.tveite () umb ! no>
Date:       2008-06-27 12:01:01
Message-ID: 4864D67D.90700 () umb ! no
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If it is the horizontal extent of the map in "terrain"/
map units (e.g. meters) that is to be specified, I think we
should include "extent" in some way, since the "EXTENT"
tag at the map object/level deals with the same kind of
"units".

What about "minhorizontalextent" "maxhorizontalextent"

Frankly, I don't see the big point in this new "display
rule", but since MapInfo uses it, there are probably use
cases (but why would anyone want a 500 pixel wide map view
to behave in a different way than a 1000 pixel wide map
view for the same map scale?  And why should you care
about width if you don't care about height???).


Håvard Tveite

Steve Lime wrote:
> More explicit, I like it.
> 
>>>> On 6/26/2008 at 10:18 AM, in message
> <f3b73b7d0806260818h46e98e3fpda35859dcb6bb0af@mail.gmail.com>, "Tamas Szekeres"
> <szekerest@gmail.com> wrote:
>> 2008/6/26 Steve Lime <Steve.Lime@dnr.state.mn.us>:
>>> Makes my head spin to use them in concert and I think it would be hard to
>> debug problems. Seems like there
>>> would be reasons to want ORs too:
>>>
>>>  ((scale > 500) && (scale < 1000)) || (width < 1000)
>>>
>>> Personally I'd keep it simple and allow one or the other. If we do pursue
>> REQUIRES as an alternative then
>>> that could support crazier expressions like above.
>>>
>>  I don't object.
>>
>>
>>> ...WIDTH still reminds me of pixels. What about MINXLENGTH, MAXXLENGTH?
>>>
>> Another option would be MINGEOWIDTH and MAXGEOWIDTH
>> like we already use this terminology in msMapComputeGeotransform for
>> example.
>>
>> Tamas
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> 
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-- 
Håvard Tveite
Department of Mathematical Sciences and Technology, UMB
Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY
Phone: +47 64965483 Fax: +47 64965401 http://www.umb.no/imt/
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