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

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