GRASS VALLEY Kayenne XL Package, Руководство пользователя

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Kayenne XL Package — User Manual 71
3-D Digital Effects Concepts
Tension Control
In the example below, the keyframes comprise a right angle, so the TENSION
control operates on a 45° line drawn through the keyframe. This line is
referred to as the Tension Vector and is parallel to a line drawn between
adjacent keyframes (
Figure 36 ).
The TENSION soft knob controls the length of the tension vector. The length
of the tension vector is inversely proportional to its parameter value. For
example, at a Tension setting of 0 (zero), this imaginary line extends an
equal distance into and out of the keyframe, and the path through the
middle keyframe is curved. The unmodified KF2 is said to have a correc-
tion value of 0.0.
Figure 36. Tension Control Setting Zero
In the example below, the TENSION control is increased to 1.0, so that the
Tension vector is shortened to non-existence through KF2 ( Figure 37 ). The
path enters and leaves the middle keyframe in a straight line as it takes on
an S-Linear motion; decelerating as it enters the middle keyframe and
accelerating as it leaves.
Tension = 0.0
KF1 KF2
KF3
Tension
Vector
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