Side of Active
Reference
Mode:
Edit Mode
Menu:
Select ‣ Side of Active
With an active vertex, this tool will select all vertices in a specified direction. It is similarly to the Loop Inner-Region tool in that it will fill select faces within its perimeters, however, it is determined by direction and not by a closed loop.
Axis Mode
Determines the behavior of the selection. More information on this can be found in Transform Orientations.
Axis Sign
Positive/Negative Axis
Depending on which Axis is chosen, the selection will encompass the positive or negative axis starting from the active vertex outward.
Aligned Axis
Where Positive and Negative Axis select all vertices in a given direction, Aligned Axis will only select the vertices that are in-line with the active vertex.
Axis
Chooses the direction of the selection.
Threshold
The amount of influence the selection has outside the original perimeters. The higher the Threshold the more vertices will be selected.