> When I try to find that according to the
> formula mentioned in that section, "direction_length = 0.5 * right_length
/
> tan(angle / 2) where right_length is the length of the right vector", I
come
> up with about 'direction 0.56' which is just more than half of what it
ought
> to be.

Really? I come up with 1.00722346241. The exact value for angle is 2 atan
(2/3), or about 67.38013502.

Anders

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