[ka-Map-users] Map Orientation

[Dave McIlhagga]

You could always instruct the user to rotate his monitor ... or his head. :)

Dave


Paul Ramsey wrote:
> I've only seen this implemented in SVG/Flash map clients. It is sort of 
> "kewl", since the labels stay properly oriented while the map turns.  
> The implementation I saw also allowed the map to be "tilted" in 3D, an 
> effect only useful for "kewl"ness, since the map itself was flat.
> 
> P
> 
> On 1-Nov-06, at 9:52 AM, Paul Spencer wrote:
> 
>> well its not possible to rotate an image in a browser in any practical 
>> sense (although perhaps canvas could do it).  However, what might be 
>> practical for you would be to add an additional paramater to tile 
>> requests called rotation.  If it works to rotate the map using 
>> mapserver, you could generate a new set of cached images for each 
>> rotation angle (say every 15 degrees) and when the rotation needs to 
>> change, set the rotation value in the kaLayer and re-request all the 
>> tiles.
>>
>> Might end up not working though ... I haven't thought about the 
>> implications of rotating the map images :)
>>
>> Cheers
>>
>> Paul
>>
>> On 1-Nov-06, at 12:23 PM, Wagner, Jeffrey S. ((DMS/CISD)) wrote:
>>
>>> Thanks. I'm looking into rotating the map, like Google Earth does.
>>> Don't need to do the "tilt", but I would like to allow the user to
>>> rotate the map based on the direction their headed (N,S,E,W).
>>>
>>> -----Original Message-----
>>> From: Paul Spencer [mailto:pspencer at dmsolutions.ca]
>>> Sent: Wednesday, November 01, 2006 9:05 AM
>>> To: Wagner, Jeffrey S. (DMS/CISD)
>>> Cc: ka-map-users at lists.maptools.org
>>> Subject: Re: [ka-Map-users] Map Orientation
>>>
>>> I'm not sure I understand the question, but I don't think so unless
>>> you are talking about rotating it as the tiles are generated ...
>>> mapserver has a rotation capability that could be used but that is
>>> nothing specific to do with ka-Map
>>>
>>> Cheers
>>>
>>> Paul
>>>
>>> On 1-Nov-06, at 11:27 AM, Wagner, Jeffrey S. ((DMS/CISD)) wrote:
>>>
>>>> Is it possible to orient, or rotate the map?
>>>>
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>>>
>>> +-----------------------------------------------------------------+
>>> |Paul Spencer                          pspencer at dmsolutions.ca    |
>>> +-----------------------------------------------------------------+
>>> |Chief Technology Officer                                         |
>>> |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
>>> +-----------------------------------------------------------------+
>>>
>>>
>>>
>>>
>>
>> +-----------------------------------------------------------------+
>> |Paul Spencer                          pspencer at dmsolutions.ca    |
>> +-----------------------------------------------------------------+
>> |Chief Technology Officer                                         |
>> |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
>> +-----------------------------------------------------------------+
>>
>>
>>
>>
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> 
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