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Light

tools/light·v1.5.1

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SUMMARY

Light is a Light COMP for scenes rendered by the Aura Render Engine. Aura uses the Light operators matched by its Lights parameter, and Affected Geometry and Excluded Geometry limit which Geometry operators each light illuminates.

Each light sets color, dimmer, physical or legacy falloff, shadows with a softness radius, and its diffuse, specular and fog scattering contributions. Spot lights add cone controls, area lights add a beam angle, double sided emission and area normalization, and a map can be projected from the light or used as the HDR image of an Environment Light. Visible to Camera follows the COMP's render flag.

PARAMETERS

PAGELight

[+]Light Type	Lighttype	Selects the type of light source.
[+]Color	Color	Sets the color of the light.
Dimmer	Dimmer	Multiplies the intensity of the light.
[+]Falloff	Falloff	Determines how light fades with distance: Physical with the square of the distance, Legacy by the attenuation settings only.
Attenuated	Attenuated	Enables distance-based light intensity falloff.
Attenuation Start	Attenuationstart	Distance at which light attenuation begins.
Attenuation End	Attenuationend	Distance at which light attenuation reaches zero.
Attenuation Rolloff	Attenuationexp	Sets the exponent of the attenuation rolloff curve.
Cone Angle	Coneangle	Sets the cone angle of a spot light. Angles are given in degrees.
Cone Delta	Conedelta	Sets the width of the soft falloff at the cone edge of a spot light.
Cone Rolloff	Coneroll	Sets the intensity falloff curve of a spot light toward its cone edge.
Normalize by Area	Normarea	Area lights: the Dimmer sets the total emitted light, so resizing the panel keeps the scene brightness.
Double Sided	Doublesided	Makes area and spot lights emit from both sides of the surface.
Beam Angle	Beamangle	Sets how far an area light spreads around its panel normal, in degrees. 180 emits over the full hemisphere.
Beam Delta	Beamdelta	Sets the width of the soft edge outside the Beam Angle of an area light, in degrees.
Projection / Environment Map	Projmap	Sets the texture projected from the light, or the HDR environment map of an Environment Light.
Projection Amount	Projamount	Blends the projection map with white: 1 projects the full map, 0 ignores it.
HDRI	Hdri	Enable when the map is HDR or linear. Off treats it as sRGB.
[+]Environment Map Rotate	Envlightmaprotate	Rotates the environment map of an Environment Light. Angles are given in degrees.
Cast Shadows	Castshadows	Enable shadow casting in Aura.
Shadow Softness	Shadowsoft	Sets the radius of the light source in world units. Larger values give softer shadow edges, 0 gives a hard point light.
Diffuse Contribution	Diffusecontrib	Controls how much this light contributes to diffuse shading.
Specular Contribution	Specularcontrib	Controls how much this light contributes to specular reflections.
Scattering Intensity	Scatterint	Sets how strongly this light scatters in the Aura fog. Set to 0 for no beams from this light.
Visible to Camera	Visibletocamera	Enable visibility to the camera in Aura.
Visible to Reflections	Visiblerefl	Enable visibility in reflections in Aura.
Surface Casts Shadows	Surfshadows	Makes the visible panel of an area light block other lights, casting shadows like any surface. Needs Visible to Camera.
Affected Geometry	Affectgeo	Sets the POPX Geo operators this light illuminates. Accepts a pattern of operators, empty lights all of them.
Excluded Geometry	Excludegeo	Sets the POPX Geo operators this light does not illuminate. Accepts a pattern of operators.

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