[postgis-users] Create a rotate() function?

[Bruce Rindahl]

>Hi, Paul,

>Paul Ramsey wrote:

>> You just have... if you want to ensure your request is not lost, you 
>> should file it in the bug tracker, and describe more precisely what
you
>> mean.  Function signature is presumably rotate(geometry,float).
But,
>> rotate about what?  Maybe it should be rotate
(geometry,geometry,float)
>> where the second geometry is a point of  rotation?

>Maybe it is a good idea to refactor the existing translate / scale /
>transscale function into a unique lineartransform function that uses a
>transformation matrix. All of translate / scale / rotate can then be
>expressed via such a matrix, and we can provide the matrix function in
>public.

This would be the cleanest solution.  The same approach is available in
PostScript, SVG, etc.

Bruce Rindahl