Introducing Object Selection



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Autodesk VIZ is an object-oriented program. This means that each object in the 3D scene carries instructions that tell the program what you can do with it. These instructions vary with the type of object.

Because each object can respond to a different set of commands, you apply commands by first selecting the object and then selecting the command. This is known as a noun-verb interface, because you first select the object (the noun) and then select the command (the verb).

Identifying the Selection Interface

In the user interface, selection commands or functions appear in the following areas:

  • Main toolbar

  • Edit menu

  • Quad menu (while objects are selected)

  • Tools menu

  • Track View

  • Display panel

  • Schematic View

The buttons on the main toolbar are a direct means of selection. The Selection Floater, available from the Tools menu, is easy to use, while the Edit menu provides more general selection commands, plus methods of selecting objects by property. Track View and Schematic View let you select objects from a hierarchical list.

Selecting From the Quad Menu

The quickest way to select an object is from the Transform quadrant of the quad menu, where you can easily switch among the Move, Rotate, Scale, and Select modes. Choose any of these and click on the object you want to select in the viewport.

Selecting by Name

Another quick way to select an object is to use keyboard shortcuts for the Select by Name command. Press H on the keyboard then select the object by name from the list. This is the most foolproof way to ensure you select the correct object when you have many overlapping objects in the scene.

Selection Buttons

Another way to select an object is to click one of these buttons, then click the object.

Select

Selection Objects

Select And Move Mode

Select And Rotate Mode

Select And Uniform Scale Mode

Select And Manipulate

The main toolbar has several selection-mode buttons. When any of the selection buttons is active, the program is in a state where you can select objects by clicking them.

Of the selection buttons, you use Select Object or Selection Floater when you want selection only. The remaining buttons let you both select and transform or manipulate your selection. Use transforms to move, rotate, and scale your selection. See Moving, Rotating, and Scaling Objects and Select and Manipulate.

Crossing Versus Window Selection

Above: Window selection selects the trash can and bench, but not the streetlight.

Below: Crossing selection selects all three: trash can, bench, and streetlight.

The Selection toggle, available from the toolbar, switches between Window and Crossing modes when you select by region. In Window mode, you select only the objects within the selection. In Crossing mode, you select all objects within the region, plus any objects crossing the boundaries of the region.

Edit Menu Commands

The Edit menu contains selection commands that operate globally on your objects.

Edit menu selection commands include:

Select All

Select None

Select Invert

Select By Color

Select By Name (Edit Menu) (also a toolbar button)

Select by Rectangular Region

Select by Circular Region

Select by Fence Region

Select by Lasso Region

Region Window (also a toolbar button)

Region Crossing (also a toolbar button)

Edit Named Selections

Tools Menu Commands

The Tools menu contains two options for modeless selection dialogs or "floaters." You can place them anywhere on the screen, or minimize them by right-clicking the title bar and choosing Minimize.

Selection Floater

Display Floater

  • Provides options for hiding and freezing selections as well as some display options. See Display Floater.

Selection Floater

The Tools menu contains an option for a modeless selection dialog called the Selection Floater. You can place it anywhere on the screen.

The Selection Floater has the same features as Select By Name. See Selection Floater.

Track/Schematic View Selection

Track View is primarily designed as an animation tool, but you can also use its Hierarchy List window as an alternative method of selecting objects by name and hierarchy. This works in both the Curve Editor and Dope Sheet modes of Track View.

Schematic View is specifically designed to let you navigate your scene efficiently, presenting a hierarchical view and letting you select objects and their properties by name.

Display Panel Selection

The Display panel provides options for hiding and freezing objects. These techniques exclude objects from other selection methods, and are useful in simplifying complex scenes. Frozen objects are still visible, but hidden objects are not.


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