2009

Reset Ranges Reloads the maximum frame number and count ranges into
the above spinners from the current movie and 3ds Max scene settings.
Pin Space group
Lets you select the plane of motion in which the keyframed pinning will occur.
Screen Moves and animates the pinned object in the plane of the screen at
its current depth in the scene. This is equivalent to dragging an object around
in the Screen reference coordinate system in 3ds Max.
Grid Moves and animates the pinned object in the plane of the currently
active grid. This lets you set up an arbitrary plane of motion for the pinning
by constructing a grid helper object in the desired place and making it the
active grid. If you don't have a grid helper set up and active, the pinning will
occur on the 3ds Max Home Grid.
Pin Mode Group
Lets you choose between two different pinning modes: absolute and relative.
Absolute Places and moves the pinned object exactly over the tracked feature.
If combined with grid space, the object is also placed and moved directly on
the active grid plane.
Relative Leaves the pinned object at its current position in space and moves
it so that its projected position relative to the tracked feature remains the same
throughout the pinning frame range. This makes it possible to animate an
object that you don’t want placed exactly over a feature, or to animate an
object using several features in successive frame ranges. (For example, a
computer generated jaw can track an ear for some frames, then a nose for
others in a talking animal shot). If combined with grid space, the object is not
moved onto the grid plane, but keeps its height above the grid and is moved
parallel to it.
Pin Performs the actual pinning, moves the object to follow the selected
feature and places a keyframe at each frame in the pin frame range. As with
the other keyframing operations in the tracker, you can undo a pin using the
3ds Max Undo function. You might also find it useful to perform keyframe
reduction afterwards in Track View.
3850 | Chapter 15 Animation