Hi,
> I think this is an accurate summary. The only papers I can find that
might pertain to this topic offhand are:
> http://nis-lab.is.s.u-tokyo.ac.jp/nis/cdrom/eg/Eurographics94beziercolor.pdf
> http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.14.2762
I have read these two papers. But I could not find the information to answer
my question. The first one (A method for displaying metaballs by using Bezier
Clipping) seems to be related to intersecting a ray, using Bezier Clipping to
solve the root of the equation to find the intersection, while the second one
(NURBS based B-rep Models for Macromolecules
and their Properties) studies with macromolecules, which are quite different
from the metaball models. For example, if we put two balls in the same position
with the same radius in the metaball model, the combination should be a ball
bigger than a single one. But the macro-molecule model cannot do this. In the
macro-molecule model, we draw all single spheres (atoms) first, and then the
contact surfaces. So I wonder whether they are suitable for this project.
I have sent the list of primitives with whether their b-rep conversions have
been implemented. Only a few of them are missing, and metaball is one among
them. But I found it hard to get started. I really want some advises and
suggestions.
Chees!
Wu
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