506
AutoCAD and Its Applications—Advanced
Copyright Goodheart-Willcox Co., Inc.
A light can be deleted from the scene using the
Lights in Model
palette. To do so,
simply right-click on the name of the light and select
Delete Light
from the shortcut
menu. The light is removed from the drawing. Using the
UNDO
command restores the
light.
If a single light is selected, the right-click menu also contains an option to control
the display of the glyph for the selected light. The options are Auto, On, or Off.
Properties Palette
The
Photometric properties
subcategory of the
General
category in the
Properties
palette has special settings for photometric lights. The
Lamp intensity
property deter-
mines the brightness of the light. The value may be expressed in candelas (cd), lumens
(lm), or illuminance (lux) values. When you select the
Lamp intensity
property, a button
is displayed to the right of the value. Picking this button opens the
Lamp Intensity
dialog box, Figure 17-19. In this dialog box, you can change the illumination units
and set the intensity (Lamp
intensity
property). You can also set an intensity scale
factor. This is multiplied by the
Lamp intensity
property to obtain the actual illumina-
tion supplied by the light. The read-only
Resulting intensity
property in the
Properties
palette displays the result.
The
Lamp color
property in the
Photometric properties
subcategory controls the
color of the light. If you select the property, a button is displayed to the right of the
value. Picking this button opens the
Lamp Color
dialog box. See Figure 17-20. This
dialog box gives you the option to control the color of the light by either standard
spectra colors or Kelvin colors. The color selected in the
Filter color:
drop-down list is
applied to the color of the light. The
Resulting color:
swatch displays the color cast by
the light once the fi lter color is applied. If the fi lter color is white (255,255,255), then the
light color is the color cast by the light.
Select a
unit type
Enter a
value
Enter a
scale factor
Figure 17-19.
The
Lamp Intensity
dialog box is used to
set the intensity for
a light.
Select a color
type and
enter a value
Light
color
Select a
filter color
Color cast
by the light
Figure 17-20.
The
Lamp Color
dialog box is used
to set the color for
the light and a filter
color, if needed.