TY - JOUR
T1 - Context-free spheres
T2 - A new method for rapid CPK image generation
AU - Palmer, Thomas C.
AU - Hausheer, Frederick H.
PY - 1988
Y1 - 1988
N2 - A new algorithm for rendering CPK images of molecules is presented. The algorithm is based on the observation that (given certain assumptions) the appearance of a sphere representing an atom is independent of the atom's position or orientation. For example, the size of a sphere's projection on the viewing plane is independent of its distance from the viewing plane. The shading of a sphere is dependent only on lighting parameters that are identical for each atom type. This algorithm takes advantage of this observation by precomputing a template for each unique atom type and stamping these into the image with appropriate offsets in X, Y and Z. The implementation described herein enables generation of CPK images an order of magnitude faster than previous methods, with little sacrifice in image quality.
AB - A new algorithm for rendering CPK images of molecules is presented. The algorithm is based on the observation that (given certain assumptions) the appearance of a sphere representing an atom is independent of the atom's position or orientation. For example, the size of a sphere's projection on the viewing plane is independent of its distance from the viewing plane. The shading of a sphere is dependent only on lighting parameters that are identical for each atom type. This algorithm takes advantage of this observation by precomputing a template for each unique atom type and stamping these into the image with appropriate offsets in X, Y and Z. The implementation described herein enables generation of CPK images an order of magnitude faster than previous methods, with little sacrifice in image quality.
KW - CPK modeling
KW - depth buffer algorithms
KW - interactive applications
KW - raster graphics
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U2 - 10.1016/0263-7855(88)80067-5
DO - 10.1016/0263-7855(88)80067-5
M3 - Article
AN - SCOPUS:0024079365
SN - 0263-7855
VL - 6
SP - 149
EP - 154
JO - Journal of Molecular Graphics
JF - Journal of Molecular Graphics
IS - 3
ER -