Point im making is that even if altering the vertices could alter
the normals (which seems it doesnt) entfixnormals seems to realter
the vertices back to original position so normals wil be unaltered (posibly bug).
Best would be to alter vertices like you do but recalculate normals with
a algoritm or use a diffrent function instead of entfixnormals if there is one.
Perhaps gamestudio has a function that alters the normals along with
altering the vertices? I would just go with a algoritm depending
on if you aim for goraud or flat shading.could perhaps help you with flat
but its c++ code..should be easy to find math examples on google..that's
if sivans alternate solution does not work...