8

394 Chapter 5: Creating Geometry
Top: Object substituted for boxes in array
Bottom: The result
Inter face
These parameters control ring arr ays. To adjust
and animate the ring array after creation, select
one of the array objects (not the dummy), and
then go to the Motion panel, not the Modify panel.
Radius—Sets the radius of the ring. You set the
initial Radius value when you drag to create the
ring array.
Amplitude—Sets the amplitude of the ring’s sine
curve, in active units. Amplitude is a height offset
from the local origin of the center dummy object.
Cycles—Sets the number of cycles in the ring’s sine
curve. When Cycles is 0.0, the ring is flat. When
Cycles is 1.0, the ring is tilted. Greater va lues
increase the number of peaks in the curve.
Phase—Offsets the phase of the wave. That is,
it has the effect of moving the wave along the
circumference of the ring. Whole values have no
effect; only fractional values do.
Number —Sets the number of b oxes in the r ing.
S unli ght a nd Da yl ight
Systems
Create panel > Systems > Sunlight button and Daylight
button
Create menu > Lights > Daylight System
Create menu > System s > Daylight System
The Sunlig ht and Daylight systems use light in
a system that follows the geographically correct
angleandmovementofthesunovertheearthat
agivenlocation. Youcanchooselocation,date,
time, and compass orientation. You can also
animate the date and time. This system is suitable
for shadow studies of proposed and existing
structures. Latitude, Longitude, Nor th D irection,
and Orbital Scale can be animated as well.
Sunlight and Daylight have a similar user interface.
The difference is that:
•Sunlightusesa
directional lig ht (page 2–1147) .