**Rotation matrix**

2020-02-23, 9:28 (This post was last modified: 2020-02-23, 11:27 by Michael Horvath.)

How do I calculate the cumulative sum or total of transformation matrices passed down from parent to child to grandchild, etc.?

The docs say:

but they do not say what a', b', c', d', etc. are. I am not very good with matrices, thanks!

The docs say:

Quote:Formally, the transformed point (u', v', w') can be calculated from point (u, v, w) as follows:

u' = a*u + b*v + c*w + x

v' = d*u + e*v + f*w + y

w' = g*u + h*v + i*w + z

but they do not say what a', b', c', d', etc. are. I am not very good with matrices, thanks!