Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 1227

Parameter
Spot Beam Angle
Light Loss Factor
Initial Intensity
Initial Color
Emit from Circle Diameter
Emit from Rectangle Width
Emit from Rectangle Length
Emit from Line Length
Emit Shape Visible in Rendering
Dimming Lamp Color Temperature Shift
Description
the Light distribution setting is Spot. (See
page 1195.)
The angle at which the light intensity reaches 50% of the peak intens-
ity. This parameter is available when the Light distribution setting is
Spot. (See Angles for Spotlights
A value used to calculate the amount of light lost (or gained) due to
environmental factors, such as dust and ambient temperature. Click
in the Value field to display the Light Loss Factor dialog. See
Factor Parameters on page 1187.
Brightness of the light before environmental factors reduce or change
the quality of the light. Click in the Value field to display the Initial
Intensity dialog. See Initial Intensity Parameters
The color of the light source before it is affected by color filters and
environmental factors. Click in the Value field to display the Initial
Color dialog. See Initial Color Parameters
The diameter of the light source that emits light in a rendered image.
This parameter is available when the Emit from Shape setting is Circle.
(See Defining the Geometry of a Light Source
The width of the rectangle that represents the light source in a
rendered image. This parameter is available when the Emit from Shape
setting is Rectangle. (See Defining the Geometry of a Light Source
page 1180.)
The length of the rectangle that represents the light source in a
rendered image. This parameter is available when the Emit from Shape
setting is Rectangle.
The length of the line that represents the light source in a rendered
image. This parameter is available when the Emit from Shape setting
is Line. (See Defining the Geometry of a Light Source
Select this option to make the shape of the light visible as a self-lumin-
ous surface (glow) when the camera (of the 3D view) is aimed directly
at the light source. This parameter is available when the Emit from
Shape setting is Rectangle or Circle. (See
Light Source on page 1180.)
In addition to setting this parameter, when defining render settings,
you must select the Soft Shadows option on the Render Quality Set-
tings dialog. See Defining a Custom Render Quality
Render Quality Settings on page 1225.
TIP If the Emit from Shape setting is Point or Line, the light source
does not display a self-luminous surface in rendered images. To see
the light source in rendered images, use a thin rectangle shape or a
small circle shape instead.
Specify whether the color and intensity of a dimmed light source
change based on predefined curves. For example, incandescent lights
Creating and Modifying Lighting Fixtures | 1185
Angles for Spotlights
on page 1195.)
Light Loss
on page 1188.
on page 1189.
on page 1180.)
on page 1180.)
Defining the Geometry of a
on page 1225 and
on
on