[Bf-python] 3DVec * 4x4Matrix issue

[Campbell Barton]

Any reason not to commit this change now the CVS's unfrozen

Ken Hughes wrote:
> Campbell Barton wrote:
>> Just tried and assign vec.w=1  to a 3d matrix dosent work.
>> Aside from that, converting to a 4d vec isnt ideal because it wont 
>> work for wrapped vecs.
>>
>> Would changing the functionality to be like this be acceptable ( in C 
>> though )
>>
>> mtx= ob.matrixWorld
>> vec= vec*mtx
>> vec= vec+mtx.translationPart()
>
> The current code always makes a copy of the vector and is checking for 
> a 3d vect * 4x4 matrix, but then sets vecCopy[3]=0.0.  I just changed 
> this to VecCopy[3]=1.0 and everything's fine.  This is in 
> row_vector_multiplication() and column_vector_multiplication().
>
> Ken
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Campbell J Barton

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