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Enhanced Software for Displaying Orthographic, Stereographic, Gnomic and Cylindrical Projections of the Sunpath Diagram and Shading Mask Protractor
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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.
Oh, K. W.; Haberl, J. S.; Degelman, L. O. (2000). Enhanced Software for Displaying Orthographic, Stereographic, Gnomic and Cylindrical Projections of the Sunpath Diagram and Shading Mask Protractor. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from