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V-Ray Directional light can be instanced by using Array or Alt+drag the light object in the Rhino viewport.

 

 

UI Path

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V-Ray Toolbar > V-Ray Lights tab > V-Ray Directional Light

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To create a Directional Light, use the button in the V-Ray Lights tab. Select a point position in the viewport. If a list of input positions is connected, multiple lights are generated. The number of input positions determines the lights count.

The point position and target point combined determine the light orientation vector.

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Parameters

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Color – Specifies the color of the light.

Intensity – Specifies the strength of the light.

Shadow Radius – Controls the size of the light. Where 0.0 is a point light, larger values produces soft (area) shadows.

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Options

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Shadows – When enabled (the default), the light casts shadows. When disabled, the light does not cast shadows.

Affect Diffuse – When enabled, the light affects the diffuse properties of the materials. 

Affect Specular – When enabled, the light affects the specular of the materials.

Caustic Subdivs – Used by V-Ray when calculating Caustics. Lower values produce noisy results but render faster. Higher values produce smoother results but take more time.

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