Grass Valley 4300 Krystal Reference Manual v.3.1 - Manual (Page 174)

8-28 Krystal 4300 Reference
Section 8 — Picture Frame Menu
The Page Roll may have up to eight layers (more than two layers are
required to map the “corners” sticking beyond the source raster when the
cylinder angle is not aligned to the source X or Y axes). Page Roll layers in
an
OVER Page Roll are shown below:
Page Roll soft knob controls are:
RADIUS - adjusts the radius of the page roll cylinder affecting the sharp-
ness of the curl.
OFFSET positions the page roll cylinder with respect to the source raster.
The offset would typically change from one edge or corner of the source
raster to the opposite edge or corner for the roll.
ANGLE defines the orientation of the page roll cylinder with respect to
the source X and Y axes, and specifies the direction of the roll.
Ripple
Ripple is an effect in which the source video mapped to a plane is effec-
tively distorted into and out of the target screen by a train of concentric
waves. This is a parallel projection to the target screen with no perspective.
The wave train may be selected from a set of patterns which include sine
wave, triangular wave, square wave, ramp, circle, random, pulse, or trape-
zoidal wave. Soft knob controls are provided to change wave amplitude,
frequency, and phase/speed.
B1
B2
B3
B4
F2
F1
F3
F4
PAGE
ROLL
LAYERS
(Side View)
NEAR LAYERS
(Back Sources)
FAR LAYERS
(Front Sources)
Viewer's Position
(at infinity)