up!
From: [EMAIL PROTECTED]
To: osg-users@lists.openscenegraph.org
Date: Wed, 24 Sep 2008 14:51:28 +0200
Subject: [osg-users] matrix transformation order
Hi, right now i have a matrix which contains N transformations. One of these is
a scale, and i want to modify that scale
i call the decompose method of the matrix
matrix.decompose(traslation, rotation_quat, scale, scale_orientation);
then i modify the scale with the new value and when i try to "compose" the
matrix back i´m not sure about the order of matrix multiplying i should use to
get the same transformated object than before with the new scale applied
what looks ok to me is osg::Matrix(scale_orientation) * scale *
osg::Matrix(rotation_quat) * traslation, but this is not working so if anyone
have any idea it will be appreciated
i´ve also tried with scale * osg::Matrix(rotation_quat) * traslation
the rotation and scale should both be around the object space origin and the
original object matrix was built using scale * rotation * translate
thanks
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