The V-Ray Light Rectangle, or area light, is a planar light source with the shape of a rectangle or a circular disc. Rectangle lights are useful for simulating man-made light sources in an interior environment, such as lamps. A rectangle light can one of two possible shapes: plane or disc.
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The VRayLightRectBlueprint Actor is accessible through the Modes > V-Ray Assets >VRayLightRect
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. Select the Blueprint and drag and drop it in the level.
For the VRayForUnreal folder to be visible, you first need to enable Show Engine Content and Show Plugin Content in the View Options of the Content Browser.
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VRayLightRect Settings
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General
Enable – When enabled (the default), the light contributes to the lighting in the level. Disabling it will stop the contribution of the light in the environment.
Is Disc – The VRayLight takes the shape of a planar disc.
Length/ Radius – The length of a Plane light source/radius of the Disc light source, measured in scene units.
Width – The width of the Plane light source, measured in scene units.
Multiplier – Specifies the intensity multiplier in lumens of the rectangle light.
Cast Shadows – When enabled (the default), the light casts shadows. Turn this option off to disable shadow casting for the light.
Color – The color that the light emits.
Directional – The light from the Plane or Disc light is spread out equally in all directions on the side in which the light points. As this parameter is increased toward a value of 1.0, the spread narrows, making the light more directional. A value of 0 the light shines in all directions around the light source. A value of 0.5 pushes the light cone to a 45-degree angle, and a value of 1.0 makes a 90-degree light cone (No effect in viewport).
