View Full Version : Global Matrix..what is it?
bobzilla 05-08-2003, 05:39 PM What exactly is Global Matrix? Is it related to Global Position and Global Rotation? I've used those in my character rigs, but I see a lot of peopple using the Global Matrix node. Can someone expalin that to me??
Thanks in advance...
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Hi,
a Matrix contains all the information about position/scaling/rotation of an object. The global Matrix will hold this in respect to world coordinates whereas the local Matrix holds it in respect to the parent object (if there is no parent those Matrices are identical).
It consists of 4 vectors:
v0, v1, v2, v3
v0 is the position information whereas v1,v2 and v3 will store the information about scaling and rotation in a way you can't manipulate directly as a user.
The reason why such a construct is used is the fast and easy way you can do hierachical calculations with this. This apeals mostly to programmers but it can be very usefull for simple users too.
Mikael Sterner made some more (and much better) explanations on this and you can find them in the COFFEE reference available from Plugincafe.
Hope this helps
Srek
bobzilla
05-08-2003, 07:11 PM
Thanks Srek. You're a;ways helpful! I'll check out the cafe, also.
Thanks again!
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