Solved by ivan-jgr in post #4 
              
              
                I see, you’re right. 
Note that in the height in [-1, 1] is to, so if you want to move 20 pixels in y position you should take 
2*(y/128) 
This works for me (note where is the red line in the first image) 
 [image] 
And in general for the other related transforms this work in the same way. Keep in m…