活动项的同侧¶
Reference
- Mode
- Edit Mode 
- Menu
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. 
 
 
While following along the X axis: (from left to right) active vertex, Aligned, Positive, and Negative.¶
- 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.