8

330 Chapter 12: Animation
Delete K ey —
Deletes a position, roll (orientation),
or scale key at the current frame, depending on
which button you click.
Pick Target—Lets you set a target other than the
defaultTargetobject.Clickthisbutton,andthen
select the new object to use as a target.
Thereafter, the new target controls the object’s
orientation. The original target remains in the
scene,andcanbedeletedorusedasaDummy
helper.
Axis—Specifies the local axis that looks at the
target. The Flip check box is used to flip the
directions of the axis.
Use Target a s Up Node—When turned on, the
controller forces the object on which it acts (source
node)tokeeponeofitslocalaxesalignedwiththe
look-at direction (the vector between the source
node and the target node). it also prevents the
source node from rotating around the look-at
direction, to avoid flipping about the object’s local
Zaxis.
Theflippingbehaviorismostcommonlyseen
when the line between a targeted object and its
target is close to vertical; that i s, their positions on
the World Z axis are nearly the same.
The option works by aligning one of the source
node’s local axes with one of the target node’s local
axes. These axes are picked automatically by the
software.
Note: This feature lets you properly manipulate
Luminaire a ssemblies . It also provides for
trouble-free operation when you
i-drop (page
3–524)
manufacturer luminaire assemblies.
Tip: In some cases, the object will flip 90 or 180
degrees even when the Use Target As Up Node
option is turned on. This behavior occurs due to
thefactthattheaxisalignmentisautomatic.To
resolve this, apply a roll angle to the object with
thecoordinatedisplay.
Positi on/Rol l/Scale—These three buttons let you
specify the other rollouts t hat appear for this
controller. In all three cases, the
Key Info (Basic)
(page 2–299)
and Key Info (Advanced) (page
2–301)
rollouts appear. When Position is active,
an additional Position XYZ Parameters rollout lets
you specify the position axis.
Ma s ter Poin t Control ler
Main toolbar > Curve Editor (Open) > Expand tracks on an
object with animated vertices or vectors in the Track View
hierarchy. > Master Point Controller
Graph Editors > Track View – Curve Editor > Open Track
View>Expandtracksonanobjectwithanimatedvertices
or vectors in the Track View hierarchy. > Master Point
Controller
The Master Point controller is assigned
automatically whenever control points, vertices,
or vectors (tangent handles) are animated in the
sub-object mode of an Editable Spline, Editable
Patch, Editable Mesh, Editable Poly, NURBS
surface, or FFD. By allowing you to select and
move all the sub keys, visually correlate keys to
points in the viewp orts, and change key properties
quickly, this controller helps to manage the
numerous tracks created w hen animating vert ices,
control points, and vectors.
The Master Point controller is displayed as a track
with green keys in Track View. Sub tracks below
the Master tr ack cont ain all the animated vert ices,
control points, and vectors.
Procedure
Ex ample: To ani mate v er ti ces, viewi ng the M a ster
Point controller tr ack :
1.
In the Front viewport, create a sphere.
2. Right-click t he sphere and select Convert to
Editable Mesh in the dialog.
3. On the Editable Mesh > Selection rollout, click
Ve r t e x .