[ggt-devel] makeZRot Fix

[Todd J. F. <to...@in...>]

I was trying to use gmtl::makeZRot, and it was giving me the same result 
no matter what matrix it was given.  To resolve, I changed the first 
line of the makeZRot function to read:
const gmtl::Vec<DATA_TYPE, 3> forward_point(1.0f, 0.0f, 0.0f);   // +X

The problem was that the forward_point was originally a vector along the 
Z-axis, so rotation about that axis couldn't be measured using the logic 
in that function.

-Todd

-- 
Todd J. Furlong
President / Principal Engineer
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