Previous:Spotlights Main Index Next:Area Lights

#### Cylindrical Lights

The `cylinder` keyword specifies a cylindrical light source that is great for simulating laser beams. Cylindrical light sources work pretty much like spotlights except that the light rays are constrained by a cylinder and not a cone. The syntax is:

CYLINDER_LIGHT_SOURCE:
`
  light_source {
` <Location>`,` COLOR `cylinder` [LIGHT_MODIFIERS...] `}`
LIGHT_MODIFIER:
  SPOTLIGHT_ITEM
| AREA_LIGHT_ITEMS | GENERAL_LIGHT_MODIFIERS
SPOTLIGHT_ITEM:
`
  radius
` Radius | `falloff` Falloff | `tightness` Tightness | `point_at` <Spot>

The `point_at`, `radius`, `falloff` and `tightness` keywords control the same features as with the spotlight. See "Spotlights" for details.

You should keep in mind that the cylindrical light source is still a point light source. The rays are emitted from one point and are only constraint by a cylinder. The light rays are not parallel.

Previous:Spotlights Main Index Next:Area Lights