8

Using Transform Gizmos 409
on the Axis Constraints toolbar (page 3–735) ,and
also lets you switch quickly and easily b etween
different transform axes and planes.
A Transform g izmo appears when one or more
objects are selected and one of the transform
buttons (
Select And Move (page 1–419) , Select
And Rotate (page 1–420)
,or Select And Scale
(page 1–421)
)isactiveonthetoolbar. Each
transform ty pe uses a different gizmo. By default,
each axis is assigned one of three colors: X is red,
Yisgreen,andZisblue.ThecornersoftheMove
gizmo are assig ned the two colors of the related
axes; for example, the corner for the XZ plane is
red and blue.
When you position the mouse over a ny axis, it
turns yellow to indicate that it’s active. Similarly,
positionthemouseoveroneoftheplanehandles,
andbothassociatedaxesturnyellow.Youcannow
drag the selection along the indicated axis or axes.
Doing so changes the
Axis Constraints toolbar
"Restrict to ..." setting (page 1–418)
.
Move Gizmo
TheMovegizmoincludesplanehandles,andthe
option to use a center box handle.
You can selec t any of the axis handles to constrain
movement to that axis. In addition, the plane
handles a llow you to constrain movement to the
XY, Y Z, or XZ planes. The selection hotspot is
withinthesquareformedbytheplanehandles.
You can change the size and offset of the handles
and other settings on the
Gizmos panel (page
3–877)
of the Preferences dia log (page 3–859) .
The Move g izmo with the YZ axes selected.
You can constrain t ranslation to the view port
plane by dragging the center box. To use this
optional control, turn on
Move In Screen Space .
Rotate Gizmo
TheRotategizmoisbuiltaroundtheconcept
of a vir tua l trackball. You can rotate an object
freely,abouttheX,Y,orZaxis,oraboutanaxis
perp endicular to the viewport.