Appeal No. 1997-1577 Page 2
Application No. 07/941,466
1. A method of creating a hard copy database
correlatable navigational chart from a non-real-
world visual database stored as a computer file
array which defines the terrain and cultural
features of a simulated non-real-world environment,
comprising the steps of:
reading said non-real-world visual database into
a filtered data structure which includes coplanar
polygonal areas, lineal routes, and point types to
represent at least one block of terrain in said
simulated non-real-world environment;
determining a number of contour intervals for
said block of terrain in said simulated
non-real-world environment;
testing said block of terrain for combinations
of elevation levels to determine the need for and
location of any contour lines;
determining shape coordinates for each of said
point types;
converting planar locations of said coplanar
polygonal areas, said contour lines, said lineal
routes and said shape coordinates of said point
types to a pre-selected scale; and
generating a hard copy of a navigational chart
which is correlated to said non-real-world visual
database by plotting each of said coplanar polygonal
areas, said contour lines, said lineal routes, and
said shape coordinates for each of said point types
in accordance with said pre-selected scale.
The prior art references of record relied upon by the
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