POINTLIGHT command

Places point lights.

Icon:

Description

Places point lights for use with renderings. A point light represents sources that illuminate in all directions, such as a bare lightbulb, and it so has no target.


	Glyph for a point light illuminating in all directions. Sphere illuminated by the point light.

Note: Unlike all other light types, point lights do not have a target or vector associated with them. Drawings can have more than one point light.

Options within the command

Name: Specifies a name for the light so that it can be identified by the LightList command.

Intensity factor: Specifies the intensity of the light.

Status: Toggles the use of this light.

Photometry: Specifies the photometric properties of the light.

Intensity: Sets the intensity expressed in candela.

Flux: Sets the luminous flux expressed in lumens.

Illuminance: Sets the illuminance expressed in lux or foot-candles.

Distance: Sets a distance expressed in drawing units.

Color: Sets the color.

?: Lists the names of available colors.

Kelvin: Sets a color temperature expressed in degrees Kelvin.

shadoW: Specifies the look of shadows cast by this light.

Off: Disables the calculation of shadows for the light.

Sharp: Displays shadows with sharp edges. Use this option to increase performance.

soFt mapped: Displays realistic shadows with soft edges.

soft sAmpled: Displays realistic shadows with softer shadows based on extended light sources.

Shape: Sets the shape of the light.

Disk: Sets the radius of the disk.

Rect: Sets the length and width of the rectangle.

sAmples: Specifies the sampling size of the shadow.; Note: Larger numbers are more accurate but take longer to render.

Visible: Toggles the shape visibility.

Attenuation: Specifies how the illumination falls off with distance from the light.

attenuation Type: Specifies the type of attenuation.

None: No attenuation so that the distance to the light source has no influence.

Inverse linear: Attenuation is the inverse of the linear distance from the light.; Note: At a distance of 2 units from the light source, light is half as strong. At a distance of 4 units, light is one quarter as strong.

inverse Squared: Attenuation is the inverse of the square of the distance from the light.; Note: At a distance of 2 units, light is one quarter as strong. At a distance of 4 units, light is one sixteenth as strong.

Use limits: Toggles whether the extent of the illumination is limited.

attenuation start Limit: Defines the point where the light starts to shine, measured from the center of the light.

attenuation End limit: Defines the point where the light stops to shine, measured from the center of the light.

filterColor: Specifies the color of the light.

Index color: Specifies an Index color.

Hsl: Specifies the color using three parameters Hue, Saturation and Lightness.

Colorbook: Specifies a bookcolor name.