Hi, once again I've stumbled upon a problem. I have two triangles which are not
parallel to any axis. I want it so that one of the triangles rotates around in
place until it is pointing the opposite way of the other one, forming a
hexagram.
If I use scale -1, the triangle does go to it's opposite, but as soon as I put
in a clock the "rotating" triangle shrinks and continues to grow in size
pointing the opposite way all the time.

example code for rotating triangle:

#declare a = <1,1,0>;
#declare b = <1,0,-1>;
#declare c = <0,1,-1>;

//moving
triangle{ a, b, c
pigment{rgbf <1,0,0,.5>}
translate -a/3 translate -b/3 translate -c/3
scale -1 * clock
translate a/3 translate b/3 translate c/3
}

//stationary
triangle{ a, b, c
pigment{rgbf <1,1,0,.5>}
}

any help would be appreciated, thanks.

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