9

Surface Arrive Behavior 1225
Distance—
The maximum r adial distance from the
target within which the behavior will be active.
Default=9999999.0.
Until the delegate is within this radius, the
behavior has no influence.
Devia tion—Adds random variation to the to the
Distance setting.
The actual deviation is calculated by multiplying
the D eviation setting by a random number
between -1 and 1, and then multiplying the result
bytheDistancesetting.Default=0.0.
Location group
Offset—Specifies a consistent distance from the
calculated arrival point, based on the surface
normal, for the delegate to use. Default=0.0.
Facing—When on, the delegate w ill try to arrive
only at points on triangles on the surface that are
facing it. Default=off.
Random—Thesoftwarechoosesarandompoint
on the target surface as the arrival point.
When using the Random option, the software
chooses arrival points for delegates once, at the
beginning of the simulation. This is the default
choice
Clo ses t—Thesoftwarechoosestheclosestpointon
the target surface as the arrival point.
IfClosestischosen,butEveryFrameisoff,the
software chooses arrival points for delegates once,
at the beginning of the simulation.
Ever y Frame—When on, the software chooses
arrival points for delegates at every frame.
Available only when Closest is chosen.
Default=off.
Every Frame is useful when the t arget object is
rotating during the animation, but requires more
time for calculat ion.
Display Of fset—When on, shows the Offset
distance as lines emanating from each vertex in the
surface object, perpendicular to the surface.
Approach group
The Height and Descent settings together specify
the path the delegate will take for its arrival.
They allow for a wide range of behavior, from
soft, gradual landings to direct helicopter-type
descen ts.
In both cases, the actual deviation is calculated by
multiplyingtheDeviationsettingbyarandom
number be tween -1 and 1, and multiplying the
result by the relevant value.
Height—Specifies a distance f rom the arrival point
along its face norma l.
This is the point that the delegate will go to first
before descending to the arrival point.
Devia tion—Adds random variation to the to the
Height setting.
The actual deviation is calculated by multiplying
the Deviation setting by a random number
between-1and1,andthenmultiplyingtheresult
by the Height sett ing.
Descent Sta r t—Specifies the distance be tween the
delegate and the arr ival point at which the descent
should start.
Note: BecarefulthatDescentStartissethigh
enough that the delegate won’t overshoot when
descending because its speed is too hig h and
deceleration too low, compared to when it should
start descending.
Devia tion—Adds random variation to the to the
Descent Start setting.
The actual deviation is calculated by multiplying
the Deviation setting by a random number
between-1and1,andthenmultiplyingtheresult
by the Descent Start setting.