Re: [brlcad-devel] "Gravitronic" or "Gravotronic" in Metaball?

[Erik G. <egr...@ar...>]

On 7/9/09 11:22 AM, "Tom Browder" <tom...@gm...> wrote:
> On Thu, Jul 9, 2009 at 09:00, Erik Greenwald<egr...@ar...> wrote:
> ...
>> There are three method ID's defined
> ...
>>  * "blob", the Blinn method from SIGGRAPH '82 (I think). I can dig up the
>>    journal and give you the bib info if needed.
> 
> That would be helpful if you can find it.  It should be part of the
> BRL-CAD docs, too.

ACM Transactions on Graphics
July 1982
Volume 1 Number 3
A Generalization of Algebraic Surface Drawing pp 235 James F. Blinn
ACM 0730-0301/82/0700-0235

Some time before October, I should have a public release report on the
details and implementation of this primitive to add to the BRL-CAD
documentation archive.

>>  * "iso", which is a simple \Sum_{i}\frac{f_{i}}{d^{2}} computation like
>>    you'd see for computing gravitational magnitude or point charge in a
>>    basic physics course.
> 
> 
> Thanks, Erik, that's helpful.
> 
> -Tom

<snip>

 -Erik