On 1-10-2018 14:24, clipka wrote:
> Am 01.10.2018 um 08:52 schrieb Thomas de Groot:
> 
>> I must admit that I have major difficulties with vnormalize and vcross.
> 
> What's difficult aout `vnormalize`? It simply trims (or stretches) a
> vector to a length of 1 while keeping the direction. No magic there.
> 
> What `vcross` does is a bit more complex, I give you that; but normally
> it is simply used to compute a vector perpendicular to two others (with
> proper handedness; e.g. vcross(x,y) returs z), and is trimmed to unit
> size using vnormalize (unless the two input vectors are known to be
> perpendicular and of unit length).
> 


difficulty to understand the "why" of such use in most cases.

-- 
Thomas

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