I'm relatively new in the matrix game , I'm trying to apply some rotation , position and scale in one matrix on a object, and it did work , I just had to multiply the matrices together to obtain one transformation matrix, it does its job but the problem is that I need at some point to revert the changes, like all of them , and when I'm trying to inverse the "master matrix" I open a black hole and the object is no longer how it was before

: ```python # matrix to position to center pos_mat = om.MMatrix( [ (1,0,0,0), (0,1,0,0), (0,0,1,0), (-o.x,-o.y,-o.z,1) ] ) # matrix to flatten on y scale_mat = om.MMatrix( [ (1,0,0,0), (0,0,0,0), (0,0,1,0), (0,0,0,1)] ) fnmat = ( pos_mat * rot_mat ) * scale_mat # fnmat = pos_mat for i in xrange( fnm.numVertices ): fnm.setPoint( i , fnm.getPoint( i) * fnmat ) # fnm.getPoint( i) * fnmat.inverse() to reverse does not work / is odd looking ``` so the question is how to reverse several transformations with one 'reverse matrix' if it's possible -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. To unsubscribe from this group and stop receiving emails from it, send an email to python_inside_maya+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/python_inside_maya/08256d61-6db2-494a-8032-9414ae42da65%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.