GRASS VALLEY Kayak HD 100C, User Manual

Page: 75 / 558

Kayak — User Manual 75
3-D Digital Effects Concepts
The path concept can also be applied to functions that do not move a
picture across the screen, like matte hue changes. For these functions, the
rate of change of the parameter follows the same path types above. For
example, an S-Linear hue rotation will accelerate and decelerate the speed
of the hue change at the beginning and end of the keyframe.
Tension, Continuity, and Bias Controls
When the Curve parameter is selected, additional fine-tuning path controls
become available:
•
TENSION
— Controls the length of the tension vector. At a setting of 0.0,
this imaginary line extends an equal distance into and out of the key-
frame, and the path through the middle keyframe is curved.
• CONTINUITY — Determines the angle of the path into and out of the
keyframe.
• BIAS — Determines whether the path will be pulled towards the pre-
vious or the following keyframe. In the following examples, a physical
path is shown between three keyframes. The first keyframe (KF1) is the
upper left square; the last keyframe (KF3) is the lower right square. The
adjustments in these examples are applied to the middle keyframe only
(KF2).