502
AutoCAD and Its Applications—Advanced
Copyright Goodheart-Willcox Co., Inc.
The
SPOTLIGHT
or
LIGHT
command is used to create a spotlight. You are fi rst
prompted to specify the location of the light. This is from where the light rays will
originate. Next, you are prompted for the target location. This is simply the location
where the light is aimed.
Once the location and target are established, several options for the light are avail-
able. The Name,
Intensity
(or
Intensity
Factor), Status, Photometry, Shadow, Attenuation,
and
Color
(or
Filter
Color) options work the same as the corresponding options for a
point light. However, a spotlight also has hotspot and falloff settings.
The hotspot is the inner cone of illumination for a spotlight. Refer to Figure 17-16.
This is measured in degrees. To set the hotspot, enter the
Hotspot
option and then
specify the number of degrees for the hotspot.
SPOTLIGHT
Ribbon
Visualize
Lights
Spot
Type
SPOTLIGHT
LIGHT
Figure 17-14.
Three spotlights are
used to simulate
recessed ceiling
lights. Notice how
the light from each
spotlight projects in
a cone.
Figure 17-15.
This is the light
glyph for a spotlight.
Object
Figure 17-16.
Hotspot and falloff
for a spotlight
are angular
measurements.