title: Exact visibility calculation for space-filling molecular models.
abstract: The visible portion of two intersecting atoms is exactly calculated to be bounded by a circular arc and an elliptic arc. The elliptic arc can be approximated either by a circular arc or by a cubic Bezier curve. Using one shaded template for each atom type and stamping the templates in a mask bitmap delineated by these curves, images are generated rapidly.
authors.affiliation: Ecole Nationale Supérieure de Chimie de Paris, France.
authors.forename: J M
authors.initials: JM
authors.lastname: Cense
mesh_terms: D000465:Algorithms; D006860:Hydrogen Bonding; D008958:Models, Molecular