thrapp@cod.UUCP (04/04/87)
A colleague of mine who does not have access to Usenet
is interested in displaying a portion of the earth's
surface with a radius of a few miles to a maximum of
about 1,000 miles. He has available a graphics
package with 3-D projection routines. He will probably
show the curved surface by means of contour lines. At this
point it is not necessary to have a geographic map of land
forms, just contour lines or possibly a shaded surface.
However, at some time a map may be desired.
Due to the relatively small amount of curvature associated with
these radii it may be necessary to exaggerate the curve for effect.
If you have information about algorithms to model the earth's
curvature or already have some software that does this please
contact me. I will relay to him. Any help is greatly appreciated.
-------------------------------------------------------------
Gary R. Thrapp
Naval Ocean Systems Center
San Diego, CA
DDN: thrapp@nosc.mil
UUCP: {ihnp4,akgua,decvax,dcdwest,ucbvax}!sdcsvax!noscvax!thrapp