Subtract

Function Description: This tool allows the user to deselect an existing selection and indicates the current selection state, and is used to control which the selected areas are added or subtracted. This function cooperates with Polygon Selection, Rectangle Selection, Sphere Selection, Circle Selection, Line Above Selection, Line Below Selection, Plane, Plane Above, Plane Below.

Steps

1.After clicking Subtract button, the button is in the selected state and the function is activated.

Note: This function cannot work alone, when a certain selection tool (Polygon Selection, Rectangle Selection, Sphere Selection, Circle Selection, Line Above Selection, Line Below Selection, Plane, Plane Above, Plane Below). This function can only be activated when it is in the active state.

2.If you do not press and select this function, when the button is in the unselected state, the selection result is in the plus selection state, and the area selected by the current selection tool is added as part of the selection area, as shown in the figure.

3.Press and select this function. When the button is in the selected state, the selection result is in the minus state, and the selected area is subtracted from the common part of the currently newly selected area as the final selection result.

• 3.1 Select an initial selection area in the plus selection state.

  
  

• 3.2 Check the deselect function, and select polygons and spheres in turn in the deselect mode. The selected area will be deselected from the original area, as shown in the figure.

Parameter setting

• Shortcut key: Ctrl + z, cancel the result of the last selection.

Note: This function is only for point cloud data.