Autodesk LIGHTSCAPE, Manual

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Importing Geometry 5
78
Lightscape
Time Zone
Select the time zone where the model is located. This
is set automatically when you choose a location. The
time zone is used to convert between sun time and
local time.
Daylight Savings
Enable this option to use daylight savings for
converting between sun time and local time. This is
not automatically set when you change dates.
Exterior
Enable this option to indicate that the model has
exterior elements.
12/22 to 6/22 and 6/22 to 12/22
Usually, when calculating dates, two possible dates
can be chosen between the two solstices. This option
determines within which solstice the date falls.
AM and PM
These options determine which time is chosen. AM
chooses the time before the sun reaches its highest
point, and PM the time after it reaches the highest
point. Because of local variations between sun time
and local time, these times may not be in the
morning or afternoon, respectively.
Month and Day
Enter the month and day for the date you want
daylight. If your selected light places the sun too high
in the sky for a date that you enter, the date appears
in red to warn you that the sun position in the Prep-
aration file will be overridden. If you want to correct
the date, change it to a date where the sun rises
higher in the sky. You can also move the location to a
place where the sun rises higher in the sky.
North
Enter the direction of north in degrees clockwise
from the positive Y axis. If your selected light places
the sun too high in the sky for a direction that you
enter, the direction appears in red to warn you that
the sun position in the Preparation file will be over-
ridden. If you want to correct the direction, change it
toward the light. You can also move the location to a
place where the sun rises higher in the sky at that
direction.
Time
Enter the time of day for the daylight calculation.
This will not cause other parameters to be calcu-
lated. Usually, when calculating time, two times can
be chosen, either in the morning or afternoon.
Recalculate
Enable this option for the system to compute
daylight parameters based on location, date, and
north change. Disable this option to adjust the
setting manually.
Override Solar Luminance
If this option is enabled, the brightness of the
selected light can override the calculated brightness
of the sun. If this option is disabled, the brightness of
the selected light is not exported, but it may be used
to calculate cloud coverage.
Sky
You can set the Sky to Clear, Partly Cloudy, or
Cloudy. This affects the brightness of the sun. Enable
Use Light to use the brightness of the selected light to
calculate the cloud coverage. This option chooses
the coverage that makes the calculated sun’s bright-
ness closest to the light.
Exporting Windows and Openings
Use the Windows panel to identify windows and
openings in your model. Use the material on a
surface to indicate whether a surface is a window or