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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:

light_source { <Location>, COLOR cylinder [LIGHT_MODIFIERS...] }
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.

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