[OpenLayers-Users] custom projection: what OL classes would be affected?

[Mike Quentel]

The proprietary map server software developed by my employer uses a
patented custom projection, called "Spherical Correction".  This
projection algorithm reduces computational effort through a 3 x 3
transformation matrix that uses the cosine of the latitude, from 0 to 41
degrees north or south of the equator (ie, the absolute value of the
angle), to result in a compression of lines of longitude (ie, "packing"
more lines of longitude into a map as the absolute latitude increases up
to 41 degrees).  The 41 degree cutoff is solely for aesthetic reasons.
The ultimate purpose behind this Spherical Correction projection is to
have a less computationally expensive way of projecting the map, rather
than using a Mercator projection.  Originally, this projection was
developed for use on mobile devices.

The map server software was developed in-house, and is not available
outside the company.

So, to get tiling to function properly with this proprietary map server,
I turned off the projection engine so the maps are essentially
geographic/unprojected, looking much like EPSG 4326.  Using some
calculations for the representative fractions of each zoom level, I was
able to get OpenLayers tiling to successfully work with the
non-Spherical Correction (ie, got it to work with unprojected maps).

Now I need to modify some classes in OL to work with this Spherical
Correction projection.  Please, does anyone have a list of classes that
would be affected by the use of such a custom projection?  I need to
modify the tiling so that it adjusts the bounding box left and right to
correspond to the longitudinal packing that occurs as the absolute
latitude increases.  But I think I will need to also modify classes
pertaining to mouse coordinate capture and more.

Any advice on this would be greatly appreciated.

Many thanks.

Mike Quentel

---------------------------------------------------------------------
This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.