Hello,

   Where can I find documentation about the determinate instruction?

                  Thanks,
                          Boryana

Post a reply to this message

In article <3d692288$1@news.povray.org>,
 "Boryana" <neo### [at] hotmaillcom> wrote:

>    Where can I find documentation about the determinate instruction?

The what?
POV doesn't have a "determinate" command/instruction/whatever. As far as 
I know, none of the patches have this either. Are you asking about 
matrix mathematics? The POV source code?

-- 
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

On Sun, 25 Aug 2002 13:34:37 -0500, "Boryana"
<neo### [at] hotmaillcom> wrote:

>   Where can I find documentation about the determinate instruction?

Hello Boryana,

while there is no determinant function in the POV-Ray scripting
language per se, you can write your own. Computing a determinant is
pretty straight forward.

The vector functions in the POV-Ray scripting language provide some
shortcuts. If you take a look at the Reorient() macro in the standard
includes, you'll see a pretty neat means to calculate a 3x3
determinant. For a 4x4, you can use the old pow(-1,j+k)*D(i,j)
formula. Or you can just stick to permutations for a general case.

Any book on linear algebra should have the formulas you need.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

Post a reply to this message