In article <web.3e6fc2684cdcaf4d2a3ff2e70@news.povray.org>,
 "Retsam" <nomail@nomail> wrote:

> My function uses the following equation:
> 1.0 - (6*r^5 - 15*r^4 + 10*r^3)

Sorry to disappoint you, but not only is this an old, long dead thread, 
this equation has already been mentioned in it. I even posted a few 
images in povray.binaries.images using it in isosurface blobs.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

Post a reply to this message

In article <web.3e6fcf6e4cdcaf4d2a3ff2e70@news.povray.org>,
 "Retsam" <nomail@nomail> wrote:

> I didn't realize that there were more replies after the first page of ten
> (I'm new to this newsgroup thing), and apparently I'm not the first that
> came up with this particular equation.  That being said, I think it would
> be worth hardcoding this particular equation for speed, the way the
> standard blob function is hardcoded and optimized.  We could call it blob2!
>  Or smooth_blob!

I am actually working on a blob2 primitive, which will use this function 
and a solving method similar to that of the isosurface primitive. 
Dropping it into the existing blob primitive is probably possible, but I 
don't understand the code nearly well enough, and it would be more 
limited than what I plan. The blob2 primitive will support far more 
component types, and will be faster than the equivalent isosurface, but 
probably slower than the equivalent blob.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

Post a reply to this message