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;;; SlopedRoof ;;;
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;;; function : Find the ridge lines of sloped roof ;;;
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;;; Return: ;;;
;;; 2D -- SlopedRoof Lines / SlopedRoof Closed Polygons of Each Side ;;;
;;; 3D -- SlopedRoof Closed Polygons of Each face ;;;
;;; / A Union Surface ;;;
;;; / Solids of Each face ;;;
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;;; Writen By GSLS(SS) June 2014 ;;;
;;; (C) EasyCity OptDesign Studio of Building Structures ;;;
;;; Email: chlh_jd@126.com Tel:86-0592-5391029 Fax:86-0592-5391020 ;;;
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;;; Main thread reference : ;;;
;;; JianGuo Li, Algorithm about generate slopedroof line from 2D polygon. ;;;
;;; [BC Dissertation] Hubei University in China . 2009. ;;;
;;; Many Thanks to JianGuo Li ! ;;;
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;;; JianGuo Li's article main abort references :
;;; [5] D.T.Lee. Medial axis transformation of a planar shape [J],IEEE Trans PAM I , 1982, 4:363-369
;;; [6] Chin F, Snoeyink J., Wang C.A. Finding the medial axis of a simple polygon in linear time
;;; [J]. Discrete and Computational Geometry , 1999, 21:405-420
;;; [8] Joseph O,Rourke. Computational Geometry In C [M].Second Edition. Cambridge University Press, 2004.179-181
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;;; Version revit See Command Routine . ;;;
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;;; Thanks Ribar.M from http://www.theswamp.org for do many test ;;;
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;;; Discuss website : http://www.theswamp.org/index.php?topic=41837.0 ;;;
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;;; Any Advice will be welcome , Thank you ! ;;;
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