On Tue, 09 Nov 2004 20:22:17 +0000, Andrew the Orchid <voi### [at] devnull> wrote:
> Oh, sure... V.t is a perfectly valid expression. But - unlike "x" / "y" 
> / "z", "t" by itself isn't a valid expression.

Look later into "2.2.1.4.6 Built-in Constants"

All built-in vector identifiers never change value. They are defined as though
the following lines were at the start of every scene. 

 #declare x = <1, 0, 0>;
 #declare y = <0, 1, 0>;
 #declare z = <0, 0, 1>;
 #declare t = <0, 0, 0, 1>;
 #declare u = <1, 0>;
 #declare v = <0, 1>;

ABX

Post a reply to this message