This page provides information on the V-Ray IES Light.
Page Contents
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Overview
The V-Ray IES Light is a V-Ray specific light source plugin that can be used to create physically accurate area lights.
V-Ray Lights Toolbar > IES Light
Kali ini saya akan memberikan link untuk mendownload IES light yang bisa digunakan pada VRay for SketchUP. Selain IES light terdapat juga IES Creator untuk membuat IES light sesuai keinginan anda dan IES viewer untuk membuka dan melihat IES light. This page provides information on V-Ray IES Light. Photometric lights utilize an.ies file which contains the distribution profile for the light. An.ies file contains complete specifications of a real world light bulb or tube including the shape of the light cone and the steepness of the falloff of the light. Such files are usually provided by the manufacturer of the real-world bulb.
Extensions > V-Ray > V-Ray Lights > IES Light
Main
Enabled () Android windows phone download. – Turns the VRayLight on and off.
Color – Specifies the color of the light.
Intensity (lm) – When enabled, specifies the strength of the light to override the intensity specified in the .ies file.
IES Light File – Specifies an .ies file to use for the current light.
Shape – Determines how the shape of the light specified in the .ies file will be taken into consideration during the calculation of shadows.
From IES File - Uses the shape information stored in the .ies file.
Point - Treats the light shape as a point light.
Circle - Treats the light shape as a planar circular area light. Its dimensions can be specified with the diameter parameter below.
Sphere - Treats the light shape as a sphere light. Its dimensions can be specified with the diameter parameter below.
Point - Treats the light shape as a point light.
Circle - Treats the light shape as a planar circular area light. Its dimensions can be specified with the diameter parameter below.
Sphere - Treats the light shape as a sphere light. Its dimensions can be specified with the diameter parameter below.
Diameter – Specifies the diameter for applicable light shape types.
The Diameter parameter is only available when the Circle and Sphere shapes are selected.
Options
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.
Shadows – When enabled (the default), the light casts shadows. When disabled, the light does not cast shadows.
Caustic photons
Caustic Subdivs – Used by V-Ray when calculating Caustics. Lower values produce noisy results but will render faster. Higher values produce smoother results but take more time.
VRay IES Light Overview
The VRay IES Light is a V-Ray specific light source plugin that can be used to create physically accurate area lights.
Enable
Enable - turns the VRayLight on and off.
Intensity
Filter Color - specifies the color of the light.
Power - this value determines the power of the light in Lumens.
Options
File - specifies the .ies file that defines light distribution.
https://renewbrasil172.weebly.com/blog/autocad-for-pc-download. Affect diffuse - this determines whether the light is affecting the diffuse properties of the materials.
Affect specular- this determines whether the light is affecting the specular of the materials.
Affect reflections - this determines whether the light will appear in reflections of materials.
Area Specular - if enabled, the highlights will match the shape of the light. If false, highlights will always be calculated as from a point light. https://renewbrasil172.weebly.com/blog/medicinal-chemistry-stevens-pdf.
Sampling
Cutoff Threshold - this parameter specifies a threshold for the light intensity, below which the light will not be computed. This can be useful in scenes with many lights, where you want to limit the effect of the lights to some distance around them. Larger values cut away more from the light; lower values make the light range larger. If you specify 0.0, the light will be calculated for all surfaces.
Photon Subdivs - this value is used by V-Ray when calculating the Global Photon Map. Lower values mean more noisy results, but will render faster. Higher values produce smoother results but take more time.
Caustic Subdivs - this value is used by V-Ray when calculating Caustics. Lower values mean more noisy results, but will render faster. Higher values produce smoother results but take more time.
Shadow
Shadows - when on (the default), the light casts shadows. Turn this option off to disable shadow casting for the light.
Soft Shadows - if on, this causes the light to take into account the information about the light shape in the IES file (if there is any shape defined) so that it produces proper soft shadows.
Shadow Color - this parameter specifies a shadow color for this light. Note that any other color than black is not physically correct.
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Shadow Bias - bias moves the shadow toward or away from the shadow-casting object (or objects). If the Bias value is too low, shadows can 'leak' through places they shouldn't, produce moire patterns or making out-of-place dark areas on meshes. If Bias is too high, shadows can 'detach' from an object. If the Bias value is too extreme in either direction, shadows might not be rendered at all.
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Shadow Subdivs - this value controls the number of samples V-Ray takes to compute lighting. Lower values mean more noisy results, but will render faster. Higher values produce smoother results but take more time. Note that the actual number of samples also depends on the DMC Sampler settings.