The well-known versions of the sun-path diagrams
and shading mask protractors that appear in the AIA's
Architectural Graphics Standards (Ramsey and Sleeper
1994) are based on the equidistant projections and use a
shading mask protractor developed by Olgyay and Olgyay
at Princeton University in the 1950s. In the previous
papers by McWatters and Haberl(1994a; 1994b;1995) and
Oh and Haberl(1996;1997) the development of a
computerized display of the equidistant projection of the
sunpath diagram and shading mask protractor was
presented. This paper describes enhancements to the
display of the sunpath diagram and shading mask
protractor that include orthographic, stereographic, gnomic
and cylindrical projections. Descriptions of the new
algorithms and examples of the different displays are also
provided
