I’m trying to scale the UV map of a face I’ve modeled to increase the resolution of the important parts of the face (mouth/eyes/cheeks) and decrease resolution of areas like the neck and chest.
In order to do this, I’ve pinned some of the border vertices and am trying to move these (hitting “G” to grab/move). Sometimes when I move a pinned vertex, it moves and scales the whole mesh, which is the behavior I am expecting and desire. However, sometimes when I move a pinned vertex, it moves without moving any of the rest of the mesh.
(1) The UV mesh I am trying to edit. Notice the 6 pinned vertices.
(2) Notice that when I select and move the pinned vertex on the bottom right, the whole mesh moves and scales.
(3) However, when I select and move the pinned vertex on the top right, it moves alone, without moving the rest of the mesh.
Do you have any ideas what may be causing this behavior and how I can get it to behave consistently and as I expect? Please let me know if there is any additional information I can provide for clarification.