Selection

Selecting objects is fundamental to editing your model.

Entering Select Mode & Single Selection

Press Esc or click the Select toolin the toolbar.

Click on any node or member to select it. The previous selection is cleared.

Box Selection

Since mouse dragging is reserved for 3D navigation (panning and orbiting), you must hold a modifier key to initiate a selection box:

  • Hold Shift + Drag: Initiates a selection box.
  • Hold Ctrl + Drag: Initiates a selection box.

The direction of the box determines the selection mode:

  • Left-to-Right (Window): Selects only objects fully contained within the box.
  • Right-to-Left (Crossing): Selects all objects that are either inside or touched by the box.

Selection Shortcuts

Other useful shortcuts:

  • Ctrl+A - Select all nodes and members
  • Ctrl+I - Invert selection
  • Ctrl+R - Restore previous selection
  • Escape - Return to Select tool / Cancel active operation

Selection Filtering

The Properties panel shows different options based on what's selected:

  • Single node: Position, supports
  • Single member: Section, material, node fixity