Lasso Tool

The Lasso Tool is located in the main Tool Box.

The Lasso Tool enables the selection of objects or nodes within the Work Area using a custom polygon. This tool is particularly effective when navigating complex designs with closely spaced objects where a standard rectangular selection is insufficient.

To use the tool, click anywhere in the Work Area to place the initial point, then continue clicking to define the polygonal boundary. It is not necessary to manually close the polygon, as the software automatically connects the final point to the first. You can refine the shape by clicking and dragging any existing point to a new position. When a point is highlighted (focused), an arrow appears on the adjacent line segment to indicate the polygon's orientation.

Lasso points can be inserted or removed using the INSERT and DEL keys. An INSERT command adds a point at the current arrow location, while DEL erases the highlighted point. Additionally, clicking in an empty area of the Work Area creates a new point immediately following the highlighted point, effectively splitting that segment into two parts.

On devices without a physical keyboard, use the + and - buttons on the top menu panel to add or remove selection points.

All modifications to the polygon are recorded, allowing the use of the Undo/Redo buttons or the CTRL+Z/CTRL+Y keyboard shortcuts.

The polygonal selection can be applied using the following modes:

Select: Selecting this option highlights objects located entirely or partially within the polygon. Any existing selections are cleared.
Add: This mode includes objects within the polygon into the current selection.
Subtract: This mode removes any objects within the polygon from the current selection.