Linear Light Tab

Linear Light (bottom) and Rectangular Light (top) after 20 rendering passes.
The Linear Light is rendered more smoothly.

Linear Lamp Tab of the Create Lamp Wizard.

A Linear Light sub-divides a long, narrow light so that points within the lamp are sampled more often and more smoothly.

A Ceiling light fixture is a flat rectangle that emits light.

Length - The length of the rectangular light fixture.
Width - The width of the rectangular light fixture.
# Lights per lamp - Set higher for smoother lighting. However, more sub-lights take more time to render.
Glue to surfaces
If Glue to surfaces is checked, as the light fixture is placed in Sketchup it will automatically stick to the nearest surface.

Common Settings

Length, Width, or Diameter sets the size of the light.
Settings, at the bottom of the dialog, are common to all types of light fixtures.
The brightness of the lamp. Intensity can be specified in either Watts or Lumens. (A 100 watt incandescent lamp emits about 1700 lumens).
(IRender uses the conversion factor of 100 watts --> 1700 lumens for all lamps.)
Click this button to bring up a color picker dialog and change the color of light emitted by the light fixture.
Component Placement Mode
Single - place just one light fixture and then stop
'Multiple - place the same light fixture repeatedly until you activate a different SketchUp tool.
Create Lamp
Press Create Lamp when you are ready to begin create the lamp component.

See also