This page provides information about the Dome Light in V-Ray for Grasshopper.
Overview
The V-Ray Dome Light component creates a light shining inward at the scene as if from a spherical or hemispherical light source outside the scene extents. This light is frequently used for Image-Based lighting using panoramic HDR images as environments.
Input Parameters
On (Boolean) – Enables or disables the light source.
Invisible (Boolean) – Controls the light source visibility. Does not affect its illuminance.
Tex (AColorTex) – Specifies the color or the texture of the light. A high dynamic range texture can be used.
Intensity (Number) – Light source intensity. Calculated in the specified units.
Units (Integer) – Specifies the light unit of measurement. Using correct units is essential when working with physical camera exposure. The light automatically takes the scene units scale into consideration to produce correct result for the scale being worked in.
Default (Scalar) – The color and multiplier directly determine the visible color of the light without any conversion. The light surface appears with the given color in the final image when seen directly by the camera.
Luminous Power (Lumens) – Total emitted visible light power measured in lumens. The intensity of the light does not depend on its size. A typical 100W incandescent light bulb emits about 1500 lumens of light.
Luminance (lm/m^2/sr) – Visible light surface power measured in lumens per square meter per steradian. The intensity of the light depends on its size.
Radiant Power (W) – Total emitted visible light power measured in watts. The intensity of the light does not depend on its size. This is not the same as the electric power consumed by a light bulb. A typical 100W light bulb only emits between 2 and 3 watts as visible light.
Radiance (W/m^2/sr) – Visible light surface power measured in watts per square meter per steradian. The intensity of the light depends on its size.
Shape (Integer) – Controls whether the Dome light covers the entire scene or only the half above the horizon line.
Plane (Plane) – Controls the orientation of the dome light defining the equatorial plane of the imaginary shape encompassing the entire model. The texture mapping will match this plane as well. The X and Z axes the texture UV coordinate system.
Output Parameters
Light (Generic Data) – Light output that can be connected to a Renderer.
Examples
Rotation
In Grasshopper the Dome light can be rotated by rotating its Base plane component.
Rotation = 0 Degrees
Rotation = 175 Degrees
