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Part III: Modeling Basics

FIGURE 10.2
This mesh suffers from objects with flipped normals, which makes them invisible.

Working with Subobjects

All the editable modeling types offer the ability to work with subobjects. Subobjects are the elements that
make up the model and can include vertices, edges, faces, polygons, and elements. These individual subob-
jects can be selected and transformed just like normal objects using the transformation tools located on the
main toolbar. But, before you can transform these subobjects, you need to select them. You can select sub-
objects only when you’re in a particular subobject mode. Each editable object type has a different set of
subobjects.
If you expand the object’s hierarchy in the Modifier Stack (by clicking the small plus sign to the left of the
object’s name), all subobjects for an object are displayed, as shown in Figure 10.3. Selecting a subobject in
the Modifier Stack places you in subobject mode for that subobject type. You can also enter subobject mode
by clicking on the subobject icons located at the top of the Selection rollout or by pressing the 1 through 5
keys on the keyboard. When you’re in subobject mode, the subobject title and the icon in the Selection roll-
out are highlighted yellow. You can work with the selected subobjects only while in subobject mode. To
transform the entire object again, you need to exit subobject mode, which you can do by clicking either the
subobject title or the subobject icon, or by pressing one of the keyboard shortcuts, 1–5.

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