Preselecting and Selecting Using the Pointer

This task explains basic selection techniques using the pointer.

Whenever you are not using an application command, the Select command is active. Using this command, you can select any object in your document. All the selection tools are available using this command.
Open the document Select.CATProduct.
  1. Click Select to enter selection mode, if it is not already activated.

  2. Point to the part of the object you want to select.

    As you point to objects, different parts of the objects are highlighted, in the geometry area, and the object name is highlighted in the specification tree:
    The identity of the preselected element is displayed in the status bar: 
    Highlighting is active only if you selected Preselect in geometry view (active by default) in Tools > Options > General > Display > Navigation. You can also set the preselected element linetype using the Preselected element linetype check box.

    The face on the object opposite, for example, is highlighted in red.

    You can also use the same tab to set a variety of useful selection features including selected element color and pre-selected (highlight) linetype. Note that the selection color and pre-selection color are the same.
    In the geometry area, you can select the constituent elements of objects, in other words:
    • faces
    • vertices
    • edges
    • planes
    • axes.
    Whenever you are using an application command, you can only select objects required as input for the command. For example, when creating a hole in a pad, you are prompted to select a face or a plane: no other elements can be selected.
  3. Once the element is highlighted, click on the object to select it:

  4. Hold down Ctrl and select another face to add it to the initial selection:

    Holding down Ctrl + selecting can be done in:
    • the geometry area
    • the specification tree
    • lists in dialog boxes.

    Holding down Shift + selecting can be done in:

    • the specification tree
    • lists in dialog boxes.
  5. To deselect, click anywhere in the background.

    Edges are highlighted as you point them and arrows are displayed to indicate to which element the edge belongs to. 
    This is especially useful in case of overlapped elements as shown in our example:
    Pressing Esc deselects all selected elements.
On certain objects, note that hidden faces and edges are also highlighted as you point at them. Hidden faces and edges are displayed in a different color:
 
  Refer to Selecting Using the Preselection Navigator for a more powerful method for selecting hidden or coincident elements.