Graphics Programs Reference
In-Depth Information
Command:
FREESPOT
Specify source location <0,0,0>:
Point
Enter an option to change [Name/Intensity
factor/Status/Photometry/Hotspot/Falloff/shadoW/
Attenuation/filterColor/eXit] <eXit>:
Enter or
option
Other lights
AutoCAD considers three more lights, one distant, which emits parallel rays, and two
web lights, whose realistic intensities are derived from IES files.
The DISTANTLIGHT command
The
DISTANTLIGHT
command (no alias) creates a light that emits parallel rays,
simulating a light that is far away. The most well-known example is the Sun. Since
the
SUNPROPERTIES
command is available, this type of light is normally not used.
These lights are not represented by glyphs.
The command prompts for a direction vector, which can be specified by two points:
Command:
DISTANTLIGHT
Specify light direction FROM <0,0,0> or
[Vector]:
Point
Specify light direction TO <1,1,1>:
Point
We press
Enter
to exit the command or choose an option:
Enter an option to change [Name/Intensity
factor/Status/Photometry/shadoW/filterColor/
eXit] <eXit>:
Enter or option
The
Vector
option specifies the lighting direction as a vector decomposed in the X,
Y, and Z directions. For instance, a vector of
0,0,-1
means light is coming vertically
from top to bottom. The remaining options are similar to the previous lighting com-
mands.
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