@article{Bonfiglioli:1986:ASC,
  optpostscript = {},
  number = {2},
  month = mar,
  optnote = {},
  author = {Luisa Bonfiglioli},
  optkey = {},
  optannote = {},
  localfile = {papers/Bonfiglioli.1986.ASC.pdf},
  journal = j-CAD,
  doi = {http://dx.doi.org/10.1016/0010-4485(86)90157-0},
  citeseer = {http://citeseer.nj.nec.com/context/385125/0},
  opturl = {},
  volume = {18},
  optwww = {},
  title = {{A}n {A}lgorithm for {S}ilhouette of {C}urved {S}urfaces {B}ased on
           {G}raphical {R}elations},
  abstract = {The proposed algorithm displays the projected surface S as a
              quadrilateral grid of straight segments, g; any one of these can
              be part of the silhouette if, and only if, the two patches
              connected along g lie on the same side of it. The same segment g
              is drawn, if it is not hidden by remote patches. The algorithm can
              be applied to any surface regular or not and self-intersecting and
              can display the entire silhouette or a part of it. It is simple,
              it uses only the rectangular coordinates of the projected vertices
              of the grid and requires few elementary mathematical operations.},
  pages = {95--101},
  year = {1986},
}