Basic Concepts

The level selector is accessed by clicking the Level Selector from the context bar when you select a single element in the model or when you use the robot. It is also available in the Examine Selection command. See Level Selector in Examine Selection command.

When level selector is used from a selection of a single element in the model, the Level Selector command changes selection and modifies the move level.

When level selector is used from the Robot, it changes selection and modifies the Robot orientation according to the selected level. It does not modify the move level.

Moving along the graduation from left to right lets you explore the structure of the model and select object at a specific level:

• Each graduation mark (also referred to as a bar) corresponds to a level in the model's structure from the leaf element up to the parent level.
• When you hover over a graduation mark, the active structure level is highlighted and the name of the element is displayed in a label.
  
  
• To select the target level element, click a graduation mark.
• Dynamic highlighting in the 3D also provides feedback about the current level and particularly which objects belong to this level.
• If you select an element that is the parent element of the model (for example the root element), the level selector command is not available.

A filtered structure can be navigated from the 3D using the level selector. If the structure has been filtered using 6WTags and you have applied colors, the Level Selector indicates the different structure levels using the defined colors. For more information, see Selecting a Structure Level.

3D orange bounding boxes help you identify the set of objects you want to move, choose the right move level with the level selector, and lets you rotate the model's viewpoint prior to moving.

An orange bounding box appears when you select a component. It is displayed around the parent object to which the selected object belongs. When you select a single component and click the corresponding orange bounding box, a context bar is displayed. It provides the Center tree Reframe, Level selector, and the Reset to local coordinates if the component corresponding to the box has been moved within a parent object. You can examine the objects by rotating the viewpoint. The bounding box reflects the actions and changes accordingly:

• When it is not selected, only the bounding box corners are displayed.
  
  
• As you hover over or select it, all edges and faces are represented. Components that are instanced under the move level are colored in orange for a clearer identification.
  
  
• When dragged, the selected components are set to full opacity while the rest of the model is set to semi-transparent opacity.
  
  

The Robot facilitates manipulating objects. The Robot's orientation depends on the geometric element at the point of selection. You can select the robot's origin and then drag it onto an object in the 3D Compose window.

While you drag the Robot:

• It becomes transparent, except the sphere manipulator to allow a better display of the geometry that is behind it.
• The components display is switched back to normal visualization mode.

When moving objects, a notification is displayed to confirm or cancel the Move operation.

You can move several components in a row using various methods including the ruler, snapping axes, and resetting to local coordinates. The table below describes the available options according to the various situations:

Option	Description
Ok	Confirms the move operation and saves the new position. This operation may be refused if at least one modification is not allowed. In this case, all the components return to their initial position.
Cancel	Cancels the move operation and places the component in its original position.