Looks like you need to use the polygon extent to compute the rotation angle but 
then should use the extent of the rotated polygon for the map extent.


________________________________
From: Travis Kirstine <[email protected]>
Sent: Friday, September 8, 2017 9:23 PM
To: Carlos Ruiz; Lime, Steve D (MNIT)
Cc: [email protected]
Subject: Re: [mapserver-users] rotate and fit based on polygon

Thanks Carlos, we've employed the method you've suggested already but not 
getting the results we are looking for, perhaps the linked image will help 
illustrate my problem

https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing
[https://lh6.googleusercontent.com/MLd9NjXDV9xuCgkbcx5555cQIqdUGvnuzkGeZhP51pN3RsEHd2FO5g=w1200-h630-p]<https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing>

rotate_image.jpg<https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing>
drive.google.com






On 8 September 2017 at 16:25, Carlos Ruiz 
<[email protected]<mailto:[email protected]>> wrote:
Travis,

Do you have the polygons in PostGIS ? Maybe you can get the extent by using 
st_extent(geom) and retrieve it on PHP/Python to set the map extent. You could 
also get a margin by multiplying extent b 1.1 (10%).



On Thursday, September 7, 2017, 1:27:06 PM CDT, Travis Kirstine 
<[email protected]<mailto:[email protected]>> wrote:


I have a bunch of polygons that represent 8.5 x 11 printed map sheets.  I'd 
like to produce images for each sheet that best fits the polygon within the 
outputted image.  We've tried using mapscript by setting the map extent based 
on the bbox of the source polygon and rotation but results aren't great 
depending on the orientation of the source polygon.  Is there a way to set the 
"extent" based on a polygon?
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