is there a way to slide elements on the active surface?
i can slide a vertex along it’s connected edges, but can i slide it on the surrounding polygons to keep the shape?
as long as i don’t have backfaces it works with snapping and surface mode turned on but on a sphere for example it doesn’t work.
In Object Mode make sure Snap (the magnet button) isn’t enabled (important as if it is enabled it would lead into problem for what’s next)
Select your object and press SHIFT+D then Enter or Left Click to duplicate it, both objects should be on top of each other.
Select your original object, set its display to XRay :
Go to Edit Mode, enable the Snap button, set to Surface and make sure to enable the 2 buttons next to it, so you end like that :
Now you can move you vertices, they will snap on the duplicated object that is bellow, allowing you to keep your mesh shape to be kept