hi,i should want to do a mask on a human to make a jean. But the mask i obtain is not good:i should want a clean cutting : see the picture.
thanks for help. 
The problem you’re encountering is edge flow. Polygons can be either visible or invisible. Not half and half. So masking and other related features operate on the entire polygon.
To get a clean edge to your mask, you need to follow an edge loop. You can’t cut diagonally across polygons.
hi,when i make a transpose mesh with transpose master and i want to move
all:body and its jean for example: just the jean moves. I don’t understand why.Thanks for your answer. 