Notifications
Clear all
Feb 23, 2005 11:07 am
Hello people!
Im stuck once again! I have a chain of bones – now i want to apply the xrotation of one bone to another. I managed to get the whole rotation by
multiplying both objects with their inverse parent transform
set the rotation and transform back (again with the parents transform)
r = $bone02.transform*inverse ($bone01.transform)
t = $bone03.transform*inverse ($bone02.transform)
t[1] = r[1]
--it works ifi set all three
--t[2] = r[2] --$bone03.transform[2]
--t[3] = r[3] --$bone03.transform[3]
t = t*$bone02.transform
orthogonalize t
$bone03.transform = t
however if i try to set only one part of the rotation the object gets skewed. I can orthogonalize its matrix but then the rotation isnt right anymore
Any help as always greatly appreciated!
seb
1 Reply
Feb 23, 2005 11:07 am
If anybodies interested. here is the solution I think.
r = copy $bone02.transform*inverse ($bone01.transform)
t = copy $bone03.transform*inverse ($bone02.transform)
--need to use eulerangles
re = r.rotationpart as eulerangles
te = t.rotationpart as eulerangles
te.z = re.z
te.x = re.x
rotpart = (te as Matrix3)
t[1]=rotpart[1]
t[2]=rotpart[2]
t[3]=rotpart[3]
t = t*$bone02.transform
--orthogonalize t
$bone03.transform= t