Selection

Selecting objects is fundamental to working in MatterCAD. You need to select objects before you can move, modify, or apply operations to them.

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Single Selection

  • Left-click on an object to select it. The previously selected object is deselected.
  • Left-click on empty space to deselect everything.

Multi-Selection

  • Shift + Left-click on additional objects to add them to your selection
  • Ctrl + Left-click also adds objects to your selection
  • Ctrl + A selects all objects in the scene

Rubber Band Selection

Click and drag on an empty area of the viewport to draw a selection rectangle. All objects within the rectangle are selected.

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Clearing Selection

  • Left-click on empty space clears the selection
  • Space clears the selection
  • Escape cancels a drag operation

Working with Selections

Once you have objects selected:

  • Move them by dragging in the viewport
  • Apply operations from the toolbar (boolean, transform, array, etc.)
  • Edit properties in the Properties panel (when a single object is selected)
  • Right-click to access the context menu with available actions

Tips

  • When multiple objects are selected, they are temporarily grouped for operations. The Properties panel shows shared properties.
  • Use the Design Tree to select objects that are hard to click in the viewport – clicking an item in the tree selects it in the view.