USO
RESTRITO
338
Applying Special Effects (Lighting and Recursive Effects)
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Ring settings
Shines the light with a hole in the middle, like a doughnut.
Adjust the following parameters.
Offset:
Distance to move the center of the ring from the
initial position (the position set when selecting the
light source in the <Spot Mode> group).
Radius:
Inner side radius of the ring.
Z-axis
La0.25
Parallel rays
Angle:
When an Offset is set, the rotation angle of the ring
around the initial center position.
Input picture
Y-axis
Latitude
X-axis
Longitude
Initial center position
Angle:
Rotation angle
Angle
Radius
Offset
Test sphere
Latitude=
0.25
The unit of these direction parameters is the number of
rotations, with 360° (1 rotation) expressed as 1.00, in the
same way as 3D rotation parameters.
The following relationships apply in the example shown in
the figure.
Fill blending modes
Specifies the way in which the light is blended with the
image.
Mix:
Light as if reflected from a mirror. The light can be
given a color.
Multiply:
Light as if reflected from a dull surface (diffuse
reflection).
Relation between test spheres and parallel
rays
The following figure shows an example of the effect of
parallel rays on a test sphere.
Test sphere
Parameter
Setting
Angle
Longitude
0.12
45°
Latitude
0.12
45°
The fractional part of the setting after the decimal point
corresponds to an angle 0 to 360°. If the fractional parts of
two setting values are the same, the effect is the same even
if the integral parts are different.
The integral part of a setting value is used when moving a
light source with keyframes.
For example, when the longitude of a light source rotates
in the clockwise direction from 0.88 (315°) to 0.12 (45°),
it rotates in the counterclockwise direction (the angle
grows smaller) if the above values are used. In this case,
the value of the second keyframe can be set to 1.12 (360°
+ 45°).
KF1 = 0.88
Ray
The direction of a ray is defined by longitude and latitude.
•
Longitude: A direction (angle), expressed as a plus value
for clockwise rotation in the plus direction with respect
to the X axis of the input picture.
•
Latitude: Latitude
The following figure shows the relationships between the
longitude and latitude of parallel rays, input picture, and
test sphere.
KF2 = 0.12
Test sphere
Keyframe trajectory
KF2 = 1.12
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