Available properties depend on the lighting units (standard or photometric) and lighting type (Spotlight, Pointlight, or Weblight). Right-click on a light and choose Properties to display the Lighting category of the Properties palette.
The following options are displayed.
The following settings are available:
Specifies the name of the light.
Specifies the type of light. Determines the distribution of light from the . The type of lighting can be changed after the light has been added to the drawings.
Indicates whether the light is on or off.
Indicates if the light is casting a shadow.
Specifies the angle of the brightest cone of light. Settings can be calculated by using the QuickCalc Calculator.
Specifies the outer extremity of the light, where it meets the darkness.
Magnifies the effect of the skylight.
Specifies the secondary color of the light. Represents the color of a physical filter over the lamp. Default color is white.
When lighting is set to photometric units this represents a secondary color filter on the light. When lighting is set to generic lighting this represents the total color of the light.
Allows the ability to plot the drawing with the glyphs on.
The following settings are available:
Specifies the inherent brightness of the light. Specifies the intensity, flux, or illuminance of the lamp. Default units are candela.
Displays the Lamp Intensity dialog box, where units can be modified.
Reports the final brightness of the light. This is determined by the product of the Lamp Intensity and the Intensity factor. This value is calculated in the Lamp Intensity Dialog box. (Read-only)
Specifies the inherent color of the light in Kelvin temperature or standard. Displays the Lamp Color dialog box.
Reports the final color of the light. This is determined by a combination of the Lamp Color and the Filter Color. (Read-only)
The following settings are available for Web and Freeweb lights:
Specifies the data file describing the intensity distribution of the light.
Displays a 2D slice through goniometric data.
Under the Web offsets panel, the following settings are available under the Weblight and Freeweb types of lights:
Specifies a rotational offset of the web about the optical X axis.
Specifies a rotational offset of the web about the optical Y axis.
Specifies a rotational offset of the web about the optical Z axis.
Under the Geometry panel, the following settings are available:
Specifies the X coordinate position of the light.
Specifies the Y coordinate position of the light.
Specifies the Z coordinate position of the light.
Specifies the X coordinate target position of the light. (Spotlight, Targetpoint, and Weblight only)
Specifies the Y coordinate target position of the light. (Spotlight, Targetpoint, and Weblight only)
Specifies the Z coordinate target position of the light. (Spotlight, Targetpoint, and Weblight only)
Specifies if the light displays a target grip for orienting the light. Disabled is the default for Freespot, Pointlight, and Freeweb. Enabled is the default for Spotlight, Targetpoint, and Weblight.
In the real world, the intensity of light diminishes over distance. Objects far from the light source appear darker than objects near the source. This effect is known as attenuation. Attenuation is available under standard lighting workflow only.
Under the Attenuation panel the following property settings are available:
Controls how light diminishes over distance. The farther away an object is from a spotlight, the darker the object appears. Attenuation is also known as decay.
Specifies whether to use limits. The default is No. (Standard lights only)
Specifies the point where light starts as an offset from the center of the light. The default is 1. (Standard lights only)
Specifies the point where light ends as an offset from the center of the light. No light is cast beyond this point. (Standard lights only)
Under the Rendered Shadow Details panel, the following settings are available:
Specifies the type of shadow cast by the light.
Specifies the size of the shadow map. (Soft shadow map type only)
Specifies the softness or fuzziness of the shadow-mapped shadow. (Soft shadow map type only)
Specifies the number of shadow rays for the light. (Soft sampled type only)
Specifies whether the light shape is actually rendered. The default is No. (Soft sampled type only)
Specifies the shape of the lamp bulb. For the Spotlight distribution type selection under the General panel, options are Rectangle (default) and Disk. For Point and Web types the options are Linear, Rectangle, Disk, Cylinder and Sphere (default). (Soft sampled type only)
Specifies spacial dimension of shadow shape for the length of the shadow. (Soft sampled type only)
Specifies spacial dimension of shape for the width of the shadow. (Soft sampled type only)
Specifies spacial radius dimension of the shape selection of disk, cylinder, or sphere. (Soft sampled type only)