Graphics Programs Reference
In-Depth Information
Try the following steps to see how these two features work:
1.
Click the expansion grip. Notice that the Move gizmo switches to the location of the
expansion grip.
2.
Hover over the green Y axis of the gizmo, and when you see the green Y axis vector, click
and drag the mouse. Notice how the surface warps as you move the mouse. If you look
carefully at the 3D Edit bar, you see that it pivots around the new location of the expan-
sion grip, the CV location.
3.
Press the Esc key to release the Y axis, and then click the expansion grip. The Move
gizmo returns to its original location at the CV.
4.
Now click the magnitude handle and move it horizontally. You see that the surface is
“pulled” in both directions of the U axis of the surface.
5.
Press the Esc key to release the magnitude handle.
6.
Right-click on the 3D Edit bar and select V Tangent Direction. Notice that the magnitude
handle changes its orientation so that it is aligned to the V direction of the surface.
7.
Click and drag the magnitude handle to see how it affects the surface.
8.
Press the Esc key twice to exit the 3D Edit bar.
As you can see from this exercise, the 3D Edit bar gives you much more control over a
CV than you would have otherwise. You also saw the shortcut menu for the 3D Edit bar (see
Figure 23.54) in step 6. The shortcut menu allows you to change the direction of the magnitude
grip, but it also lets you switch the position of the Move gizmo and the expansion grip with
the Move Point Location and Move Tangent Direction options. The Relocate Base Point option
enables you to move to a different CV location. Table 23.3 includes descriptions of these options.
FIGURE 23.54
The 3D Edit bar's
shortcut menu
